cvs.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlft55xx.c

   1 //-----------------------------------------------------------------------------
   2 //
   3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   4 // at your option, any later version. See the LICENSE.txt file for the text of
   5 // the license.
   6 //-----------------------------------------------------------------------------
   7 // Low frequency T55xx commands
   8 //-----------------------------------------------------------------------------
   9
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <inttypes.h>
  13 #include "proxmark3.h"
  14 #include "ui.h"
  15 #include "graph.h"
  16 #include "cmdmain.h"
  17 #include "cmdparser.h"
  18 #include "cmddata.h"
  19 #include "cmdlf.h"
  20 #include "cmdlft55xx.h"
  21 #include "util.h"
  22 #include "data.h"
  23 #include "lfdemod.h"
  24 #include "cmdhf14a.h" //for getTagInfo
  25
  26 #define T55x7_CONFIGURATION_BLOCK 0x00
  27 #define T55x7_PAGE0 0x00
  28 #define T55x7_PAGE1 0x01
  29 #define T55x7_PWD       0x00000010
  30 #define REGULAR_READ_MODE_BLOCK 0xFF
  31
  32 // Default configuration
  33 t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = FALSE, .offset = 0x00, .block0 = 0x00, .Q5 = FALSE };
  34
  35 t55xx_conf_block_t Get_t55xx_Config(){
  36         return config;
  37 }
  38 void Set_t55xx_Config(t55xx_conf_block_t conf){
  39         config = conf;
  40 }
  41
  42 int usage_t55xx_config(){
  43         PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>] [Q5]");
  44         PrintAndLog("Options:");
  45         PrintAndLog("       h                                - This help");
  46         PrintAndLog("       b <8|16|32|40|50|64|100|128>     - Set bitrate");
  47         PrintAndLog("       d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa>  - Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");
  48         PrintAndLog("       i [1]                            - Invert data signal, defaults to normal");
  49         PrintAndLog("       o [offset]                       - Set offset, where data should start decode in bitstream");
  50         PrintAndLog("       Q5                               - Set as Q5(T5555) chip instead of T55x7");
  51         PrintAndLog("       ST                               - Set Sequence Terminator on");
  52         PrintAndLog("");
  53         PrintAndLog("Examples:");
  54         PrintAndLog("      lf t55xx config d FSK          - FSK demodulation");
  55         PrintAndLog("      lf t55xx config d FSK i 1      - FSK demodulation, inverse data");
  56         PrintAndLog("      lf t55xx config d FSK i 1 o 3  - FSK demodulation, inverse data, offset=3,start from position 3 to decode data");
  57         PrintAndLog("");
  58         return 0;
  59 }
  60 int usage_t55xx_read(){
  61         PrintAndLog("Usage:  lf t55xx read [b <block>] [p <password>] <override_safety> <page1>");
  62         PrintAndLog("Options:");
  63         PrintAndLog("     b <block>    - block number to read. Between 0-7");
  64         PrintAndLog("     p <password> - OPTIONAL password (8 hex characters)");
  65         PrintAndLog("     o            - OPTIONAL override safety check");
  66         PrintAndLog("     1            - OPTIONAL read Page 1 instead of Page 0");
  67         PrintAndLog("     ****WARNING****");
  68         PrintAndLog("     Use of read with password on a tag not configured for a pwd");
  69         PrintAndLog("     can damage the tag");
  70     PrintAndLog("");
  71         PrintAndLog("Examples:");
  72     PrintAndLog("      lf t55xx read b 0                                - read data from block 0");
  73         PrintAndLog("      lf t55xx read b 0 p feedbeef         - read data from block 0 password feedbeef");
  74         PrintAndLog("      lf t55xx read b 0 p feedbeef o       - read data from block 0 password feedbeef safety check");
  75         PrintAndLog("");
  76         return 0;
  77 }
  78 int usage_t55xx_write(){
  79         PrintAndLog("Usage:  lf t55xx wr [b <block>] [d <data>] [p <password>] [1]");
  80         PrintAndLog("Options:");
  81         PrintAndLog("     b <block>    - block number to write. Between 0-7");
  82         PrintAndLog("     d <data>     - 4 bytes of data to write (8 hex characters)");
  83         PrintAndLog("     p <password> - OPTIONAL password 4bytes (8 hex characters)");
  84         PrintAndLog("     1            - OPTIONAL write Page 1 instead of Page 0");
  85     PrintAndLog("");
  86         PrintAndLog("Examples:");
  87         PrintAndLog("      lf t55xx write b 3 d 11223344            - write 11223344 to block 3");
  88         PrintAndLog("      lf t55xx write b 3 d 11223344 p feedbeef - write 11223344 to block 3 password feedbeef");
  89         PrintAndLog("");
  90         return 0;
  91 }
  92 int usage_t55xx_trace() {
  93         PrintAndLog("Usage:  lf t55xx trace [1]");
  94         PrintAndLog("Options:");
  95         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
  96         PrintAndLog("");
  97         PrintAndLog("Examples:");
  98         PrintAndLog("      lf t55xx trace");
  99         PrintAndLog("      lf t55xx trace 1");
 100         PrintAndLog("");
 101         return 0;
 102 }
 103 int usage_t55xx_info() {
 104         PrintAndLog("Usage:  lf t55xx info [1]");
 105         PrintAndLog("Options:");
 106         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
 107         PrintAndLog("");
 108         PrintAndLog("Examples:");
 109         PrintAndLog("      lf t55xx info");
 110         PrintAndLog("      lf t55xx info 1");
 111         PrintAndLog("");
 112         return 0;
 113 }
 114 int usage_t55xx_dump(){
 115         PrintAndLog("Usage:  lf t55xx dump <password> [o]");
 116         PrintAndLog("Options:");
 117         PrintAndLog("     <password>  - OPTIONAL password 4bytes (8 hex symbols)");
 118         PrintAndLog("     o           - OPTIONAL override, force pwd read despite danger to card");
 119         PrintAndLog("");
 120         PrintAndLog("Examples:");
 121         PrintAndLog("      lf t55xx dump");
 122         PrintAndLog("      lf t55xx dump feedbeef o");
 123         PrintAndLog("");
 124         return 0;
 125 }
 126 int usage_t55xx_detect(){
 127         PrintAndLog("Usage:  lf t55xx detect [1] [p <password>]");
 128         PrintAndLog("Options:");
 129         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
 130         PrintAndLog("     p <password>  - OPTIONAL password (8 hex characters)");
 131         PrintAndLog("");
 132         PrintAndLog("Examples:");
 133         PrintAndLog("      lf t55xx detect");
 134         PrintAndLog("      lf t55xx detect 1");
 135         PrintAndLog("      lf t55xx detect p 11223344");
 136         PrintAndLog("");
 137         return 0;
 138 }
 139 int usage_t55xx_wakup(){
 140         PrintAndLog("Usage:  lf t55xx wakeup [h] p <password>");
 141         PrintAndLog("This commands send the Answer-On-Request command and leaves the readerfield ON afterwards.");
 142         PrintAndLog("Options:");
 143         PrintAndLog("     h                     - this help");
 144     PrintAndLog("     p <password>      - password 4bytes (8 hex symbols)");
 145     PrintAndLog("");
 146         PrintAndLog("Examples:");
 147     PrintAndLog("      lf t55xx wakeup p 11223344  - send wakeup password");
 148         return 0;
 149 }
 150 int usage_t55xx_bruteforce(){
 151         PrintAndLog("This command uses A) bruteforce to scan a number range");
 152         PrintAndLog("                  B) a dictionary attack");
 153     PrintAndLog("Usage: lf t55xx bruteforce [h] <start password> <end password> [i <*.dic>]");
 154     PrintAndLog("       password must be 4 bytes (8 hex symbols)");
 155         PrintAndLog("Options:");
 156         PrintAndLog("     h                     - this help");
 157         PrintAndLog("     <start_pwd> - 4 byte hex value to start pwd search at");
 158         PrintAndLog("     <end_pwd>   - 4 byte hex value to end pwd search at");
 159     PrintAndLog("     i <*.dic> - loads a default keys dictionary file <*.dic>");
 160     PrintAndLog("");
 161     PrintAndLog("Examples:");
 162     PrintAndLog("       lf t55xx bruteforce aaaaaaaa bbbbbbbb");
 163         PrintAndLog("       lf t55xx bruteforce i default_pwd.dic");
 164     PrintAndLog("");
 165     return 0;
 166 }
 167 int usage_t55xx_recoverpw(){
 168         PrintAndLog("This command uses a few tricks to try to recover mangled password");
 169         PrintAndLog("WARNING: this may brick non-password protected chips!");
 170         PrintAndLog("Usage: lf t55xx recoverpw [password]");
 171         PrintAndLog("       password must be 4 bytes (8 hex symbols)");
 172         PrintAndLog("       default password is 51243648, used by many cloners");
 173         PrintAndLog("Options:");
 174         PrintAndLog("     h           - this help");
 175         PrintAndLog("     [password]  - 4 byte hex value of password written by cloner");
 176         PrintAndLog("");
 177         PrintAndLog("Examples:");
 178         PrintAndLog("       lf t55xx recoverpw");
 179         PrintAndLog("       lf t55xx recoverpw 51243648");
 180         PrintAndLog("");
 181         return 0;
 182 }int usage_t55xx_wipe(){
 183         PrintAndLog("Usage:  lf t55xx wipe [h] [Q5]");
 184         PrintAndLog("This commands wipes a tag, fills blocks 1-7 with zeros and a default configuration block");
 185         PrintAndLog("Options:");
 186         PrintAndLog("     h     - this help");
 187         PrintAndLog("     Q5  - indicates to use the T5555 (Q5) default configuration block");
 188     PrintAndLog("");
 189         PrintAndLog("Examples:");
 190     PrintAndLog("      lf t55xx wipe    -  wipes a t55x7 tag,    config block 0x000880E0");
 191         PrintAndLog("      lf t55xx wipe Q5 -  wipes a t5555 Q5 tag, config block 0x6001F004");
 192         return 0;
 193 }
 194 static int CmdHelp(const char *Cmd);
 195
 196 void printT5xxHeader(uint8_t page){
 197         PrintAndLog("Reading Page %d:", page);
 198         PrintAndLog("blk | hex data | binary");
 199         PrintAndLog("----+----------+---------------------------------");
 200 }
 201
 202 int CmdT55xxSetConfig(const char *Cmd) {
 203
 204         uint8_t offset = 0;
 205         char modulation[5] = {0x00};
 206         char tmp = 0x00;
 207         uint8_t bitRate = 0;
 208         uint8_t rates[9] = {8,16,32,40,50,64,100,128,0};
 209         uint8_t cmdp = 0;
 210         bool errors = FALSE;
 211         while(param_getchar(Cmd, cmdp) != 0x00 && !errors)
 212         {
 213                 tmp = param_getchar(Cmd, cmdp);
 214                 switch(tmp)
 215                 {
 216                 case 'h':
 217                 case 'H':
 218                         return usage_t55xx_config();
 219                 case 'b':
 220                         errors |= param_getdec(Cmd, cmdp+1, &bitRate);
 221                         if ( !errors){
 222                                 uint8_t i = 0;
 223                                 for (; i < 9; i++){
 224                                         if (rates[i]==bitRate) {
 225                                                 config.bitrate = i;
 226                                                 break;
 227                                         }
 228                                 }
 229                                 if (i==9) errors = TRUE;
 230                         }
 231                         cmdp+=2;
 232                         break;
 233                 case 'd':
 234                         param_getstr(Cmd, cmdp+1, modulation);
 235                         cmdp += 2;
 236
 237                         if ( strcmp(modulation, "FSK" ) == 0) {
 238                                 config.modulation = DEMOD_FSK;
 239                         } else if ( strcmp(modulation, "FSK1" ) == 0) {
 240                                 config.modulation = DEMOD_FSK1;
 241                                 config.inverted=1;
 242                         } else if ( strcmp(modulation, "FSK1a" ) == 0) {
 243                                 config.modulation = DEMOD_FSK1a;
 244                                 config.inverted=0;
 245                         } else if ( strcmp(modulation, "FSK2" ) == 0) {
 246                                 config.modulation = DEMOD_FSK2;
 247                                 config.inverted=0;
 248                         } else if ( strcmp(modulation, "FSK2a" ) == 0) {
 249                                 config.modulation = DEMOD_FSK2a;
 250                                 config.inverted=1;
 251                         } else if ( strcmp(modulation, "ASK" ) == 0) {
 252                                 config.modulation = DEMOD_ASK;
 253                         } else if ( strcmp(modulation, "NRZ" ) == 0) {
 254                                 config.modulation = DEMOD_NRZ;
 255                         } else if ( strcmp(modulation, "PSK1" ) == 0) {
 256                                 config.modulation = DEMOD_PSK1;
 257                         } else if ( strcmp(modulation, "PSK2" ) == 0) {
 258                                 config.modulation = DEMOD_PSK2;
 259                         } else if ( strcmp(modulation, "PSK3" ) == 0) {
 260                                 config.modulation = DEMOD_PSK3;
 261                         } else if ( strcmp(modulation, "BIa" ) == 0) {
 262                                 config.modulation = DEMOD_BIa;
 263                                 config.inverted=1;
 264                         } else if ( strcmp(modulation, "BI" ) == 0) {
 265                                 config.modulation = DEMOD_BI;
 266                                 config.inverted=0;
 267                         } else {
 268                                 PrintAndLog("Unknown modulation '%s'", modulation);
 269                                 errors = TRUE;
 270                         }
 271                         break;
 272                 case 'i':
 273                         config.inverted = param_getchar(Cmd,cmdp+1) == '1';
 274                         cmdp+=2;
 275                         break;
 276                 case 'o':
 277                         errors |= param_getdec(Cmd, cmdp+1, &offset);
 278                         if ( !errors )
 279                                 config.offset = offset;
 280                         cmdp+=2;
 281                         break;
 282                 case 'Q':
 283                 case 'q':
 284                         config.Q5 = TRUE;
 285                         cmdp++;
 286                         break;
 287                 case 'S':
 288                 case 's':
 289                         config.ST = TRUE;
 290                         cmdp++;
 291                         break;
 292                 default:
 293                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 294                         errors = TRUE;
 295                         break;
 296                 }
 297         }
 298
 299         // No args
 300         if (cmdp == 0) return printConfiguration( config );
 301
 302         //Validations
 303         if (errors) return usage_t55xx_config();
 304
 305         config.block0 = 0;
 306         return printConfiguration ( config );
 307 }
 308
 309 int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, bool override, uint32_t password){
 310         //Password mode
 311         if ( usepwd ) {
 312                 // try reading the config block and verify that PWD bit is set before doing this!
 313                 if ( !override ) {
 314
 315                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0 ) ) return 0;
 316
 317                         if ( !tryDetectModulation() ) {
 318                                 PrintAndLog("Safety Check: Could not detect if PWD bit is set in config block. Exits.");
 319                                 return 0;
 320                         } else {
 321                                 PrintAndLog("Safety Check: PWD bit is NOT set in config block. Reading without password...");
 322                                 usepwd = false;
 323                                 page1 = false;
 324                         }
 325                 } else {
 326                         PrintAndLog("Safety Check Overriden - proceeding despite risk");
 327                 }
 328         }
 329
 330         if (!AquireData(page1, block, usepwd, password) ) return 0;
 331         if (!DecodeT55xxBlock()) return 0;
 332
 333         char blk[10]={0};
 334         sprintf(blk,"%02d", block);
 335         printT55xxBlock(blk);
 336         return 1;
 337 }
 338
 339 int CmdT55xxReadBlock(const char *Cmd) {
 340         uint8_t block = REGULAR_READ_MODE_BLOCK;
 341         uint32_t password = 0; //default to blank Block 7
 342         bool usepwd = false;
 343         bool override = false;
 344         bool page1 = false;
 345         bool errors = false;
 346         uint8_t cmdp = 0;
 347         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 348                 switch(param_getchar(Cmd, cmdp)) {
 349                 case 'h':
 350                 case 'H':
 351                         return usage_t55xx_read();
 352                 case 'b':
 353                 case 'B':
 354                         errors |= param_getdec(Cmd, cmdp+1, &block);
 355                         cmdp += 2;
 356                         break;
 357                 case 'o':
 358                 case 'O':
 359                         override = TRUE;
 360                         cmdp++;
 361                         break;
 362                 case 'p':
 363                 case 'P':
 364                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 365                         usepwd = true;
 366                         cmdp += 2;
 367                         break;
 368                 case '1':
 369                         page1 = true;
 370                         cmdp++;
 371                         break;
 372                 default:
 373                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 374                         errors = true;
 375                         break;
 376                 }
 377         }
 378         if (errors) return usage_t55xx_read();
 379
 380         if (block > 7 && block != REGULAR_READ_MODE_BLOCK       ) {
 381                 PrintAndLog("Block must be between 0 and 7");
 382                 return 0;
 383         }
 384
 385         printT5xxHeader(page1);
 386         return T55xxReadBlock(block, page1, usepwd, override, password);
 387 }
 388
 389 bool DecodeT55xxBlock(){
 390
 391         char buf[30] = {0x00};
 392         char *cmdStr = buf;
 393         int ans = 0;
 394         bool ST = config.ST;
 395         uint8_t bitRate[8] = {8,16,32,40,50,64,100,128};
 396         DemodBufferLen = 0x00;
 397
 398         switch( config.modulation ){
 399                 case DEMOD_FSK:
 400                         snprintf(cmdStr, sizeof(buf),"%d %d", bitRate[config.bitrate], config.inverted );
 401                         ans = FSKrawDemod(cmdStr, FALSE);
 402                         break;
 403                 case DEMOD_FSK1:
 404                 case DEMOD_FSK1a:
 405                         snprintf(cmdStr, sizeof(buf),"%d %d 8 5", bitRate[config.bitrate], config.inverted );
 406                         ans = FSKrawDemod(cmdStr, FALSE);
 407                         break;
 408                 case DEMOD_FSK2:
 409                 case DEMOD_FSK2a:
 410                         snprintf(cmdStr, sizeof(buf),"%d %d 10 8", bitRate[config.bitrate], config.inverted );
 411                         ans = FSKrawDemod(cmdStr, FALSE);
 412                         break;
 413                 case DEMOD_ASK:
 414                         snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
 415                         ans = ASKDemod_ext(cmdStr, FALSE, FALSE, 1, &ST);
 416                         break;
 417                 case DEMOD_PSK1:
 418                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 419                         save_restoreGB(1);
 420                         CmdLtrim("160");
 421                         snprintf(cmdStr, sizeof(buf),"%d %d 6", bitRate[config.bitrate], config.inverted );
 422                         ans = PSKDemod(cmdStr, FALSE);
 423                         //undo trim samples
 424                         save_restoreGB(0);
 425                         break;
 426                 case DEMOD_PSK2: //inverted won't affect this
 427                 case DEMOD_PSK3: //not fully implemented
 428                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 429                         save_restoreGB(1);
 430                         CmdLtrim("160");
 431                         snprintf(cmdStr, sizeof(buf),"%d 0 6", bitRate[config.bitrate] );
 432                         ans = PSKDemod(cmdStr, FALSE);
 433                         psk1TOpsk2(DemodBuffer, DemodBufferLen);
 434                         //undo trim samples
 435                         save_restoreGB(0);
 436                         break;
 437                 case DEMOD_NRZ:
 438                         snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
 439                         ans = NRZrawDemod(cmdStr, FALSE);
 440                         break;
 441                 case DEMOD_BI:
 442                 case DEMOD_BIa:
 443                         snprintf(cmdStr, sizeof(buf),"0 %d %d 1", bitRate[config.bitrate], config.inverted );
 444                         ans = ASKbiphaseDemod(cmdStr, FALSE);
 445                         break;
 446                 default:
 447                         return FALSE;
 448         }
 449         return (bool) ans;
 450 }
 451
 452 bool DecodeT5555TraceBlock() {
 453         DemodBufferLen = 0x00;
 454
 455         // According to datasheet. Always: RF/64, not inverted, Manchester
 456         return (bool) ASKDemod("64 0 1", FALSE, FALSE, 1);
 457 }
 458
 459 // sanity check. Don't use proxmark if it is offline and you didn't specify useGraphbuf
 460 static int SanityOfflineCheck( bool useGraphBuffer ){
 461         if ( !useGraphBuffer && offline) {
 462                 PrintAndLog("Your proxmark3 device is offline. Specify [1] to use graphbuffer data instead");
 463                 return 0;
 464         }
 465         return 1;
 466 }
 467
 468 int CmdT55xxDetect(const char *Cmd){
 469         bool errors = FALSE;
 470         bool useGB = FALSE;
 471         bool usepwd = FALSE;
 472         uint32_t password = 0;
 473         uint8_t cmdp = 0;
 474
 475         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 476                 switch(param_getchar(Cmd, cmdp)) {
 477                 case 'h':
 478                 case 'H':
 479                         return usage_t55xx_detect();
 480                 case 'p':
 481                 case 'P':
 482                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 483                         usepwd = TRUE;
 484                         cmdp += 2;
 485                         break;
 486                 case '1':
 487                         // use Graphbuffer data
 488                         useGB = TRUE;
 489                         cmdp++;
 490                         break;
 491                 default:
 492                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 493                         errors = true;
 494                         break;
 495                 }
 496         }
 497         if (errors) return usage_t55xx_detect();
 498
 499         // sanity check.
 500         if (!SanityOfflineCheck(useGB)) return 1;
 501
 502         if ( !useGB) {
 503                 if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password) )
 504                         return 1;
 505         }
 506
 507         if ( !tryDetectModulation() )
 508                 PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
 509
 510         return 0;
 511 }
 512
 513 // detect configuration?
 514 bool tryDetectModulation(){
 515         uint8_t hits = 0;
 516         t55xx_conf_block_t tests[15];
 517         int bitRate=0;
 518         uint8_t fc1 = 0, fc2 = 0, clk=0;
 519
 520         if (GetFskClock("", FALSE, FALSE)){
 521                 fskClocks(&fc1, &fc2, &clk, FALSE);
 522                 if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 523                         tests[hits].modulation = DEMOD_FSK;
 524                         if (fc1==8 && fc2 == 5)
 525                                 tests[hits].modulation = DEMOD_FSK1a;
 526                         else if (fc1==10 && fc2 == 8)
 527                                 tests[hits].modulation = DEMOD_FSK2;
 528                         tests[hits].bitrate = bitRate;
 529                         tests[hits].inverted = FALSE;
 530                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 531                         tests[hits].ST = FALSE;
 532                         ++hits;
 533                 }
 534                 if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 535                         tests[hits].modulation = DEMOD_FSK;
 536                         if (fc1 == 8 && fc2 == 5)
 537                                 tests[hits].modulation = DEMOD_FSK1;
 538                         else if (fc1 == 10 && fc2 == 8)
 539                                 tests[hits].modulation = DEMOD_FSK2a;
 540                         tests[hits].bitrate = bitRate;
 541                         tests[hits].inverted = TRUE;
 542                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 543                         tests[hits].ST = FALSE;
 544                         ++hits;
 545                 }
 546         } else {
 547                 clk = GetAskClock("", FALSE, FALSE);
 548                 if (clk>0) {
 549                         tests[hits].ST = TRUE;
 550                         // "0 0 1 " == clock auto, invert false, maxError 1.
 551                         // false = no verbose
 552                         // false = no emSearch
 553                         // 1 = Ask/Man
 554                         // st = true
 555                         if ( ASKDemod_ext("0 0 1", FALSE, FALSE, 1, &tests[hits].ST) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 556                                 tests[hits].modulation = DEMOD_ASK;
 557                                 tests[hits].bitrate = bitRate;
 558                                 tests[hits].inverted = FALSE;
 559                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 560                                 ++hits;
 561                         }
 562                         tests[hits].ST = TRUE;
 563                         // "0 0 1 " == clock auto, invert true, maxError 1.
 564                         // false = no verbose
 565                         // false = no emSearch
 566                         // 1 = Ask/Man
 567                         // st = true
 568                         if ( ASKDemod_ext("0 1 1", FALSE, FALSE, 1, &tests[hits].ST)  && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 569                                 tests[hits].modulation = DEMOD_ASK;
 570                                 tests[hits].bitrate = bitRate;
 571                                 tests[hits].inverted = TRUE;
 572                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 573                                 ++hits;
 574                         }
 575                         if ( ASKbiphaseDemod("0 0 0 2", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 576                                 tests[hits].modulation = DEMOD_BI;
 577                                 tests[hits].bitrate = bitRate;
 578                                 tests[hits].inverted = FALSE;
 579                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 580                                 tests[hits].ST = FALSE;
 581                                 ++hits;
 582                         }
 583                         if ( ASKbiphaseDemod("0 0 1 2", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 584                                 tests[hits].modulation = DEMOD_BIa;
 585                                 tests[hits].bitrate = bitRate;
 586                                 tests[hits].inverted = TRUE;
 587                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 588                                 tests[hits].ST = FALSE;
 589                                 ++hits;
 590                         }
 591                 }
 592                 //undo trim from ask
 593                 //save_restoreGB(0);
 594                 clk = GetNrzClock("", FALSE, FALSE);
 595                 if (clk>0) {
 596                         if ( NRZrawDemod("0 0 1", FALSE)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 597                                 tests[hits].modulation = DEMOD_NRZ;
 598                                 tests[hits].bitrate = bitRate;
 599                                 tests[hits].inverted = FALSE;
 600                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 601                                 tests[hits].ST = FALSE;
 602                                 ++hits;
 603                         }
 604
 605                         if ( NRZrawDemod("0 1 1", FALSE)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 606                                 tests[hits].modulation = DEMOD_NRZ;
 607                                 tests[hits].bitrate = bitRate;
 608                                 tests[hits].inverted = TRUE;
 609                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 610                                 tests[hits].ST = FALSE;
 611                                 ++hits;
 612                         }
 613                 }
 614
 615                 // allow undo
 616                 // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 617                 save_restoreGB(1);
 618                 CmdLtrim("160");
 619                 clk = GetPskClock("", FALSE, FALSE);
 620                 if (clk>0) {
 621                         if ( PSKDemod("0 0 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 622                                 tests[hits].modulation = DEMOD_PSK1;
 623                                 tests[hits].bitrate = bitRate;
 624                                 tests[hits].inverted = FALSE;
 625                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 626                                 tests[hits].ST = FALSE;
 627                                 ++hits;
 628                         }
 629                         if ( PSKDemod("0 1 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 630                                 tests[hits].modulation = DEMOD_PSK1;
 631                                 tests[hits].bitrate = bitRate;
 632                                 tests[hits].inverted = TRUE;
 633                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 634                                 tests[hits].ST = FALSE;
 635                                 ++hits;
 636                         }
 637                         // PSK2 - needs a call to psk1TOpsk2.
 638                         if ( PSKDemod("0 0 6", FALSE)) {
 639                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 640                                 if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 641                                         tests[hits].modulation = DEMOD_PSK2;
 642                                         tests[hits].bitrate = bitRate;
 643                                         tests[hits].inverted = FALSE;
 644                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 645                                         tests[hits].ST = FALSE;
 646                                         ++hits;
 647                                 }
 648                         } // inverse waves does not affect this demod
 649                         // PSK3 - needs a call to psk1TOpsk2.
 650                         if ( PSKDemod("0 0 6", FALSE)) {
 651                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 652                                 if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 653                                         tests[hits].modulation = DEMOD_PSK3;
 654                                         tests[hits].bitrate = bitRate;
 655                                         tests[hits].inverted = FALSE;
 656                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 657                                         tests[hits].ST = FALSE;
 658                                         ++hits;
 659                                 }
 660                         } // inverse waves does not affect this demod
 661                 }
 662                 //undo trim samples
 663                 save_restoreGB(0);
 664         }
 665         if ( hits == 1) {
 666                 config.modulation = tests[0].modulation;
 667                 config.bitrate = tests[0].bitrate;
 668                 config.inverted = tests[0].inverted;
 669                 config.offset = tests[0].offset;
 670                 config.block0 = tests[0].block0;
 671                 config.Q5 = tests[0].Q5;
 672                 config.ST = tests[0].ST;
 673                 printConfiguration( config );
 674                 return TRUE;
 675         }
 676
 677         if ( hits > 1) {
 678                 PrintAndLog("Found [%d] possible matches for modulation.",hits);
 679                 for(int i=0; i<hits; ++i){
 680                         PrintAndLog("--[%d]---------------", i+1);
 681                         printConfiguration( tests[i] );
 682                 }
 683         }
 684         return FALSE;
 685 }
 686
 687 bool testModulation(uint8_t mode, uint8_t modread){
 688         switch( mode ){
 689                 case DEMOD_FSK:
 690                         if (modread >= DEMOD_FSK1 && modread <= DEMOD_FSK2a) return TRUE;
 691                         break;
 692                 case DEMOD_ASK:
 693                         if (modread == DEMOD_ASK) return TRUE;
 694                         break;
 695                 case DEMOD_PSK1:
 696                         if (modread == DEMOD_PSK1) return TRUE;
 697                         break;
 698                 case DEMOD_PSK2:
 699                         if (modread == DEMOD_PSK2) return TRUE;
 700                         break;
 701                 case DEMOD_PSK3:
 702                         if (modread == DEMOD_PSK3) return TRUE;
 703                         break;
 704                 case DEMOD_NRZ:
 705                         if (modread == DEMOD_NRZ) return TRUE;
 706                         break;
 707                 case DEMOD_BI:
 708                         if (modread == DEMOD_BI) return TRUE;
 709                         break;
 710                 case DEMOD_BIa:
 711                         if (modread == DEMOD_BIa) return TRUE;
 712                         break;
 713                 default:
 714                         return FALSE;
 715         }
 716         return FALSE;
 717 }
 718
 719 bool testQ5Modulation(uint8_t   mode, uint8_t   modread){
 720         switch( mode ){
 721                 case DEMOD_FSK:
 722                         if (modread >= 4 && modread <= 5) return TRUE;
 723                         break;
 724                 case DEMOD_ASK:
 725                         if (modread == 0) return TRUE;
 726                         break;
 727                 case DEMOD_PSK1:
 728                         if (modread == 1) return TRUE;
 729                         break;
 730                 case DEMOD_PSK2:
 731                         if (modread == 2) return TRUE;
 732                         break;
 733                 case DEMOD_PSK3:
 734                         if (modread == 3) return TRUE;
 735                         break;
 736                 case DEMOD_NRZ:
 737                         if (modread == 7) return TRUE;
 738                         break;
 739                 case DEMOD_BI:
 740                         if (modread == 6) return TRUE;
 741                         break;
 742                 default:
 743                         return FALSE;
 744         }
 745         return FALSE;
 746 }
 747
 748 int convertQ5bitRate(uint8_t bitRateRead) {
 749         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 750         for (int i=0; i<8; i++)
 751                 if (expected[i] == bitRateRead)
 752                         return i;
 753
 754         return -1;
 755 }
 756
 757 bool testQ5(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t     clk){
 758
 759         if ( DemodBufferLen < 64 ) return FALSE;
 760         uint8_t si = 0;
 761         for (uint8_t idx = 28; idx < 64; idx++){
 762                 si = idx;
 763                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 764
 765                 uint8_t safer     = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 766                 uint8_t resv      = PackBits(si, 8, DemodBuffer); si += 8;
 767                 // 2nibble must be zeroed.
 768                 if (safer != 0x6 && safer != 0x9) continue;
 769                 if ( resv > 0x00) continue;
 770                 //uint8_t       pageSel   = PackBits(si, 1, DemodBuffer); si += 1;
 771                 //uint8_t fastWrite = PackBits(si, 1, DemodBuffer); si += 1;
 772                 si += 1+1;
 773                 int bitRate       = PackBits(si, 6, DemodBuffer)*2 + 2; si += 6;     //bit rate
 774                 if (bitRate > 128 || bitRate < 8) continue;
 775
 776                 //uint8_t AOR       = PackBits(si, 1, DemodBuffer); si += 1;
 777                 //uint8_t PWD       = PackBits(si, 1, DemodBuffer); si += 1;
 778                 //uint8_t pskcr     = PackBits(si, 2, DemodBuffer); si += 2;  //could check psk cr
 779                 //uint8_t inverse   = PackBits(si, 1, DemodBuffer); si += 1;
 780                 si += 1+1+2+1;
 781                 uint8_t modread   = PackBits(si, 3, DemodBuffer); si += 3;
 782                 uint8_t maxBlk    = PackBits(si, 3, DemodBuffer); si += 3;
 783                 //uint8_t ST        = PackBits(si, 1, DemodBuffer); si += 1;
 784                 if (maxBlk == 0) continue;
 785                 //test modulation
 786                 if (!testQ5Modulation(mode, modread)) continue;
 787                 if (bitRate != clk) continue;
 788                 *fndBitRate = convertQ5bitRate(bitRate);
 789                 if (*fndBitRate < 0) continue;
 790                 *offset = idx;
 791
 792                 return TRUE;
 793         }
 794         return FALSE;
 795 }
 796
 797 bool testBitRate(uint8_t readRate, uint8_t clk){
 798         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 799         if (expected[readRate] == clk)
 800                 return true;
 801
 802         return false;
 803 }
 804
 805 bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5){
 806
 807         if ( DemodBufferLen < 64 ) return FALSE;
 808         uint8_t si = 0;
 809         for (uint8_t idx = 28; idx < 64; idx++){
 810                 si = idx;
 811                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 812
 813                 uint8_t safer    = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 814                 uint8_t resv     = PackBits(si, 4, DemodBuffer); si += 4;     //was 7 & +=7+3 //should be only 4 bits if extended mode
 815                 // 2nibble must be zeroed.
 816                 // moved test to here, since this gets most faults first.
 817                 if ( resv > 0x00) continue;
 818
 819                 uint8_t xtRate   = PackBits(si, 3, DemodBuffer); si += 3;     //extended mode part of rate
 820                 int bitRate  = PackBits(si, 3, DemodBuffer); si += 3;     //bit rate
 821                 if (bitRate > 7) continue;
 822                 uint8_t extend   = PackBits(si, 1, DemodBuffer); si += 1;     //bit 15 extended mode
 823                 uint8_t modread  = PackBits(si, 5, DemodBuffer); si += 5+2+1;
 824                 //uint8_t pskcr   = PackBits(si, 2, DemodBuffer); si += 2+1;  //could check psk cr
 825                 //uint8_t nml01    = PackBits(si, 1, DemodBuffer); si += 1+5;   //bit 24, 30, 31 could be tested for 0 if not extended mode
 826                 //uint8_t nml02    = PackBits(si, 2, DemodBuffer); si += 2;
 827
 828                 //if extended mode
 829                 bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? TRUE : FALSE;
 830
 831                 if (!extMode){
 832                         if (xtRate) continue;  //nml01 || nml02 ||  caused issues on noralys tags
 833                 }
 834                 //test modulation
 835                 if (!testModulation(mode, modread)) continue;
 836                 if (!testBitRate(bitRate, clk)) continue;
 837                 *fndBitRate = bitRate;
 838                 *offset = idx;
 839                 *Q5 = FALSE;
 840                 return TRUE;
 841         }
 842         if (testQ5(mode, offset, fndBitRate, clk)) {
 843                 *Q5 = TRUE;
 844                 return TRUE;
 845         }
 846         return FALSE;
 847 }
 848
 849 void printT55xxBlock(const char *blockNum){
 850
 851         uint8_t i = config.offset;
 852         uint8_t endpos = 32 + i;
 853         uint32_t blockData = 0;
 854         uint8_t bits[64] = {0x00};
 855
 856         if ( !DemodBufferLen) return;
 857
 858         if ( endpos > DemodBufferLen){
 859                 PrintAndLog("The configured offset %d is too big. Possible offset: %d)", i, DemodBufferLen-32);
 860                 return;
 861         }
 862
 863         for (; i < endpos; ++i)
 864                 bits[i - config.offset] = DemodBuffer[i];
 865
 866         blockData = PackBits(0, 32, bits);
 867
 868         PrintAndLog(" %s | %08X | %s", blockNum, blockData, sprint_bin(bits,32));
 869 }
 870
 871 int special(const char *Cmd) {
 872         uint32_t blockData = 0;
 873         uint8_t bits[32] = {0x00};
 874
 875         PrintAndLog("OFFSET | DATA  | BINARY");
 876         PrintAndLog("----------------------------------------------------");
 877         int i,j = 0;
 878         for (; j < 64; ++j){
 879
 880                 for (i = 0; i < 32; ++i)
 881                         bits[i]=DemodBuffer[j+i];
 882
 883                 blockData = PackBits(0, 32, bits);
 884
 885                 PrintAndLog("%02d | 0x%08X | %s",j , blockData, sprint_bin(bits,32));
 886         }
 887         return 0;
 888 }
 889
 890 int printConfiguration( t55xx_conf_block_t b){
 891         PrintAndLog("Chip Type  : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
 892         PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
 893         PrintAndLog("Bit Rate   : %s", GetBitRateStr(b.bitrate) );
 894         PrintAndLog("Inverted   : %s", (b.inverted) ? "Yes" : "No" );
 895         PrintAndLog("Offset     : %d", b.offset);
 896         PrintAndLog("Seq. Term. : %s", (b.ST) ? "Yes" : "No" );
 897         PrintAndLog("Block0     : 0x%08X", b.block0);
 898         PrintAndLog("");
 899         return 0;
 900 }
 901
 902 int CmdT55xxWakeUp(const char *Cmd) {
 903         uint32_t password = 0;
 904         uint8_t cmdp = 0;
 905         bool errors = false;
 906         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 907                 switch(param_getchar(Cmd, cmdp)) {
 908                 case 'h':
 909                 case 'H':
 910                         return usage_t55xx_wakup();
 911                 case 'p':
 912                 case 'P':
 913                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 914                         cmdp += 2;
 915                         errors = false;
 916                         break;
 917                 default:
 918                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 919                         errors = true;
 920                         break;
 921                 }
 922         }
 923         if (errors) return usage_t55xx_wakup();
 924
 925         UsbCommand c = {CMD_T55XX_WAKEUP, {password, 0, 0}};
 926         clearCommandBuffer();
 927         SendCommand(&c);
 928         PrintAndLog("Wake up command sent. Try read now");
 929         return 0;
 930 }
 931
 932 int CmdT55xxWriteBlock(const char *Cmd) {
 933         uint8_t block = 0xFF; //default to invalid block
 934         uint32_t data = 0; //default to blank Block
 935         uint32_t password = 0; //default to blank Block 7
 936         bool usepwd = false;
 937         bool page1 = false;
 938         bool gotdata = false;
 939         bool errors = false;
 940         uint8_t cmdp = 0;
 941         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 942                 switch(param_getchar(Cmd, cmdp)) {
 943                 case 'h':
 944                 case 'H':
 945                         return usage_t55xx_write();
 946                 case 'b':
 947                 case 'B':
 948                         errors |= param_getdec(Cmd, cmdp+1, &block);
 949                         cmdp += 2;
 950                         break;
 951                 case 'd':
 952                 case 'D':
 953                         data = param_get32ex(Cmd, cmdp+1, 0, 16);
 954                         gotdata = true;
 955                         cmdp += 2;
 956                         break;
 957                 case 'p':
 958                 case 'P':
 959                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 960                         usepwd = true;
 961                         cmdp += 2;
 962                         break;
 963                 case '1':
 964                         page1 = true;
 965                         cmdp++;
 966                         break;
 967                 default:
 968                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 969                         errors = true;
 970                         break;
 971                 }
 972         }
 973         if (errors || !gotdata) return usage_t55xx_write();
 974
 975         if (block > 7) {
 976                 PrintAndLog("Block number must be between 0 and 7");
 977                 return 0;
 978         }
 979
 980         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {data, block, 0}};
 981         UsbCommand resp;
 982         c.d.asBytes[0] = (page1) ? 0x2 : 0;
 983
 984         char pwdStr[16] = {0};
 985         snprintf(pwdStr, sizeof(pwdStr), "pwd: 0x%08X", password);
 986
 987         PrintAndLog("Writing page %d  block: %02d  data: 0x%08X %s", page1, block, data,  (usepwd) ? pwdStr : "" );
 988
 989         //Password mode
 990         if (usepwd) {
 991                 c.arg[2] = password;
 992                 c.d.asBytes[0] |= 0x1;
 993         }
 994         clearCommandBuffer();
 995         SendCommand(&c);
 996         if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 997                 PrintAndLog("Error occurred, device did not ACK write operation. (May be due to old firmware)");
 998                 return 0;
 999         }
1000         return 1;
1001 }
1002
1003 int CmdT55xxReadTrace(const char *Cmd) {
1004         char cmdp = param_getchar(Cmd, 0);
1005         bool pwdmode = false;
1006         uint32_t password = 0;
1007         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_trace();
1008
1009         if (strlen(Cmd)==0) {
1010                 // sanity check.
1011                 if (!SanityOfflineCheck(FALSE)) return 1;
1012
1013                 if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
1014                         return 1;
1015         }
1016
1017         if ( config.Q5 ){
1018                 if (!DecodeT5555TraceBlock()) return 1;
1019         } else {
1020                 if (!DecodeT55xxBlock()) return 1;
1021         }
1022
1023         if ( !DemodBufferLen ) return 1;
1024
1025         RepaintGraphWindow();
1026         uint8_t repeat = (config.offset > 5) ? 32 : 0;
1027
1028         uint8_t si = config.offset + repeat;
1029         uint32_t bl1 = PackBits(si, 32, DemodBuffer);
1030         uint32_t bl2 = PackBits(si+32, 32, DemodBuffer);
1031
1032         if (config.Q5) {
1033                 uint32_t hdr = PackBits(si, 9,  DemodBuffer); si += 9;
1034
1035                 if (hdr != 0x1FF) {
1036                   PrintAndLog("Invalid Q5 Trace data header (expected 0x1FF, found %X)", hdr);
1037                   return 1;
1038                 }
1039
1040                 t5555_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .icr = 0, .lotidc = '?', .lotid = 0, .wafer = 0, .dw =0};
1041
1042                 data.icr     = PackBits(si, 2,  DemodBuffer); si += 2;
1043                 data.lotidc  = 'Z' - PackBits(si, 2,  DemodBuffer); si += 3;
1044
1045                 data.lotid   = PackBits(si, 4,  DemodBuffer); si += 5;
1046                 data.lotid <<= 4;
1047                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1048                 data.lotid <<= 4;
1049                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1050                 data.lotid <<= 4;
1051                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1052                 data.lotid <<= 1;
1053                 data.lotid  |= PackBits(si, 1,  DemodBuffer); si += 1;
1054
1055                 data.wafer   = PackBits(si, 3,  DemodBuffer); si += 4;
1056                 data.wafer <<= 2;
1057                 data.wafer  |= PackBits(si, 2,  DemodBuffer); si += 2;
1058
1059                 data.dw      = PackBits(si, 2,  DemodBuffer); si += 3;
1060                 data.dw    <<= 4;
1061                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1062                 data.dw    <<= 4;
1063                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1064                 data.dw    <<= 4;
1065                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1066
1067                 printT5555Trace(data, repeat);
1068
1069         } else {
1070
1071                 t55x7_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .acl = 0, .mfc = 0, .cid = 0, .year = 0, .quarter = 0, .icr = 0,  .lotid = 0, .wafer = 0, .dw = 0};
1072
1073                 data.acl = PackBits(si, 8,  DemodBuffer); si += 8;
1074                 if ( data.acl != 0xE0 ) {
1075                         PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
1076                         return 1;
1077                 }
1078
1079                 data.mfc     = PackBits(si, 8,  DemodBuffer); si += 8;
1080                 data.cid     = PackBits(si, 5,  DemodBuffer); si += 5;
1081                 data.icr     = PackBits(si, 3,  DemodBuffer); si += 3;
1082                 data.year    = PackBits(si, 4,  DemodBuffer); si += 4;
1083                 data.quarter = PackBits(si, 2,  DemodBuffer); si += 2;
1084                 data.lotid   = PackBits(si, 14, DemodBuffer); si += 14;
1085                 data.wafer   = PackBits(si, 5,  DemodBuffer); si += 5;
1086                 data.dw      = PackBits(si, 15, DemodBuffer);
1087
1088                 time_t t = time(NULL);
1089                 struct tm tm = *localtime(&t);
1090                 if ( data.year > tm.tm_year-110)
1091                         data.year += 2000;
1092                 else
1093                         data.year += 2010;
1094
1095                 printT55x7Trace(data, repeat);
1096         }
1097         return 0;
1098 }
1099
1100 void printT55x7Trace( t55x7_tracedata_t data, uint8_t repeat ){
1101         PrintAndLog("-- T55x7 Trace Information ----------------------------------");
1102         PrintAndLog("-------------------------------------------------------------");
1103         PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1)  : 0x%02X (%d)", data.acl, data.acl);
1104         PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6)    : 0x%02X (%d) - %s", data.mfc, data.mfc, getTagInfo(data.mfc));
1105         PrintAndLog(" CID                                     : 0x%02X (%d) - %s", data.cid, data.cid, GetModelStrFromCID(data.cid));
1106         PrintAndLog(" ICR IC Revision                         : %d", data.icr );
1107         PrintAndLog(" Manufactured");
1108         PrintAndLog("     Year/Quarter : %d/%d", data.year, data.quarter);
1109         PrintAndLog("     Lot ID       : %d", data.lotid );
1110         PrintAndLog("     Wafer number : %d", data.wafer);
1111         PrintAndLog("     Die Number   : %d", data.dw);
1112         PrintAndLog("-------------------------------------------------------------");
1113         PrintAndLog(" Raw Data - Page 1");
1114         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1115         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1116         PrintAndLog("-------------------------------------------------------------");
1117
1118         /*
1119         TRACE - BLOCK O
1120                 Bits    Definition                                                              HEX
1121                 1-8             ACL Allocation class (ISO/IEC 15963-1)  0xE0
1122                 9-16    MFC Manufacturer ID (ISO/IEC 7816-6)    0x15 Atmel Corporation
1123                 17-21   CID                                                                             0x1 = Atmel ATA5577M1  0x2 = Atmel ATA5577M2
1124                 22-24   ICR IC revision
1125                 25-28   YEAR (BCD encoded)                                              9 (= 2009)
1126                 29-30   QUARTER                                                                 1,2,3,4
1127                 31-32   LOT ID
1128
1129         TRACE - BLOCK 1
1130                 1-12    LOT ID
1131                 13-17   Wafer number
1132                 18-32   DW,  die number sequential
1133         */
1134 }
1135
1136 void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){
1137         PrintAndLog("-- T5555 (Q5) Trace Information -----------------------------");
1138         PrintAndLog("-------------------------------------------------------------");
1139         PrintAndLog(" ICR IC Revision  : %d", data.icr );
1140         PrintAndLog("     Lot          : %c%d", data.lotidc, data.lotid);
1141         PrintAndLog("     Wafer number : %d", data.wafer);
1142         PrintAndLog("     Die Number   : %d", data.dw);
1143         PrintAndLog("-------------------------------------------------------------");
1144         PrintAndLog(" Raw Data - Page 1");
1145         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1146         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1147
1148         /*
1149                 ** Q5 **
1150                 TRACE - BLOCK O and BLOCK1
1151                 Bits    Definition                              HEX
1152                 1-9             Header                  0x1FF
1153                 10-11 IC Revision
1154                 12-13 Lot ID char
1155                 15-35 Lot ID (NB parity)
1156                 36-41 Wafer number (NB parity)
1157                 42-58 DW, die number sequential (NB parity)
1158                 60-63 Parity bits
1159                 64    Always zero
1160         */
1161 }
1162
1163 //need to add Q5 info...
1164 int CmdT55xxInfo(const char *Cmd){
1165         /*
1166                 Page 0 Block 0 Configuration data.
1167                 Normal mode
1168                 Extended mode
1169         */
1170         bool pwdmode = false;
1171         uint32_t password = 0;
1172         char cmdp = param_getchar(Cmd, 0);
1173
1174         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_info();
1175
1176         if (strlen(Cmd)==0){
1177                                 // sanity check.
1178                 if (!SanityOfflineCheck(FALSE)) return 1;
1179
1180                 if ( !AquireData( T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, pwdmode, password ) )
1181                         return 1;
1182         }
1183
1184         if (!DecodeT55xxBlock()) return 1;
1185
1186         // too little space to start with
1187         if ( DemodBufferLen < 32) return 1;
1188
1189         //
1190         PrintAndLog("Offset+32 ==%d\n DemodLen == %d", config.offset + 32,DemodBufferLen );
1191
1192         uint8_t si = config.offset;
1193         uint32_t bl0      = PackBits(si, 32, DemodBuffer);
1194         uint32_t safer    = PackBits(si, 4, DemodBuffer); si += 4;
1195         uint32_t resv     = PackBits(si, 7, DemodBuffer); si += 7;
1196         uint32_t dbr      = PackBits(si, 3, DemodBuffer); si += 3;
1197         uint32_t extend   = PackBits(si, 1, DemodBuffer); si += 1;
1198         uint32_t datamod  = PackBits(si, 5, DemodBuffer); si += 5;
1199         uint32_t pskcf    = PackBits(si, 2, DemodBuffer); si += 2;
1200         uint32_t aor      = PackBits(si, 1, DemodBuffer); si += 1;
1201         uint32_t otp      = PackBits(si, 1, DemodBuffer); si += 1;
1202         uint32_t maxblk   = PackBits(si, 3, DemodBuffer); si += 3;
1203         uint32_t pwd      = PackBits(si, 1, DemodBuffer); si += 1;
1204         uint32_t sst      = PackBits(si, 1, DemodBuffer); si += 1;
1205         uint32_t fw       = PackBits(si, 1, DemodBuffer); si += 1;
1206         uint32_t inv      = PackBits(si, 1, DemodBuffer); si += 1;
1207         uint32_t por      = PackBits(si, 1, DemodBuffer); si += 1;
1208
1209         if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");
1210         PrintAndLog("");
1211         PrintAndLog("-- T55x7 Configuration & Tag Information --------------------");
1212         PrintAndLog("-------------------------------------------------------------");
1213         PrintAndLog(" Safer key                 : %s", GetSaferStr(safer));
1214         PrintAndLog(" reserved                  : %d", resv);
1215         PrintAndLog(" Data bit rate             : %s", GetBitRateStr(dbr));
1216         PrintAndLog(" eXtended mode             : %s", (extend) ? "Yes - Warning":"No");
1217         PrintAndLog(" Modulation                : %s", GetModulationStr(datamod));
1218         PrintAndLog(" PSK clock frequency       : %d", pskcf);
1219         PrintAndLog(" AOR - Answer on Request   : %s", (aor) ? "Yes":"No");
1220         PrintAndLog(" OTP - One Time Pad        : %s", (otp) ? "Yes - Warning":"No" );
1221         PrintAndLog(" Max block                 : %d", maxblk);
1222         PrintAndLog(" Password mode             : %s", (pwd) ? "Yes":"No");
1223         PrintAndLog(" Sequence Start Terminator : %s", (sst) ? "Yes":"No");
1224         PrintAndLog(" Fast Write                : %s", (fw)  ? "Yes":"No");
1225         PrintAndLog(" Inverse data              : %s", (inv) ? "Yes":"No");
1226         PrintAndLog(" POR-Delay                 : %s", (por) ? "Yes":"No");
1227         PrintAndLog("-------------------------------------------------------------");
1228         PrintAndLog(" Raw Data - Page 0");
1229         PrintAndLog("     Block 0  : 0x%08X  %s", bl0, sprint_bin(DemodBuffer+config.offset,32) );
1230         PrintAndLog("-------------------------------------------------------------");
1231
1232         return 0;
1233 }
1234
1235 int CmdT55xxDump(const char *Cmd){
1236
1237         uint32_t password = 0;
1238         bool override = false;
1239         char cmdp = param_getchar(Cmd, 0);
1240         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_dump();
1241
1242         bool usepwd = ( strlen(Cmd) > 0);
1243         if ( usepwd ){
1244                 password = param_get32ex(Cmd, 0, 0, 16);
1245                 if (param_getchar(Cmd, 1) =='o' )
1246                         override = true;
1247         }
1248
1249         printT5xxHeader(0);
1250         for ( uint8_t i = 0; i < 8; ++i)
1251                 T55xxReadBlock(i, 0, usepwd, override, password);
1252
1253         printT5xxHeader(1);
1254         for ( uint8_t   i = 0; i < 4; i++)
1255                 T55xxReadBlock(i, 1, usepwd, override, password);
1256
1257         return 1;
1258 }
1259
1260 int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
1261         // arg0 bitmodes:
1262         //      bit0 = pwdmode
1263         //      bit1 = page to read from
1264         // arg1: which block to read
1265         // arg2: password
1266
1267         uint8_t arg0 = (page<<1) | pwdmode;
1268         UsbCommand c = {CMD_T55XX_READ_BLOCK, {arg0, block, password}};
1269
1270         clearCommandBuffer();
1271         SendCommand(&c);
1272         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1273                 PrintAndLog("command execution time out");
1274                 return 0;
1275         }
1276
1277         uint8_t got[12000];
1278         GetFromBigBuf(got,sizeof(got),0);
1279         WaitForResponse(CMD_ACK,NULL);
1280         setGraphBuf(got, sizeof(got));
1281         return 1;
1282 }
1283
1284 char * GetBitRateStr(uint32_t id){
1285         static char buf[25];
1286
1287         char *retStr = buf;
1288                 switch (id){
1289                 case 0:   snprintf(retStr,sizeof(buf),"%d - RF/8",id);   break;
1290                 case 1:   snprintf(retStr,sizeof(buf),"%d - RF/16",id);  break;
1291                 case 2:   snprintf(retStr,sizeof(buf),"%d - RF/32",id);  break;
1292                 case 3:   snprintf(retStr,sizeof(buf),"%d - RF/40",id);  break;
1293                 case 4:   snprintf(retStr,sizeof(buf),"%d - RF/50",id);  break;
1294                 case 5:   snprintf(retStr,sizeof(buf),"%d - RF/64",id);  break;
1295                 case 6:   snprintf(retStr,sizeof(buf),"%d - RF/100",id); break;
1296                 case 7:   snprintf(retStr,sizeof(buf),"%d - RF/128",id); break;
1297                 default:  snprintf(retStr,sizeof(buf),"%d - (Unknown)",id); break;
1298                 }
1299         return buf;
1300 }
1301
1302 char * GetSaferStr(uint32_t id){
1303         static char buf[40];
1304         char *retStr = buf;
1305
1306         snprintf(retStr,sizeof(buf),"%d",id);
1307         if (id == 6) {
1308                 snprintf(retStr,sizeof(buf),"%d - passwd",id);
1309         }
1310         if (id == 9 ){
1311                 snprintf(retStr,sizeof(buf),"%d - testmode",id);
1312         }
1313
1314         return buf;
1315 }
1316
1317 char * GetModulationStr( uint32_t id){
1318         static char buf[60];
1319         char *retStr = buf;
1320
1321         switch (id){
1322                 case 0: snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id); break;
1323                 case 1: snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id); break;
1324                 case 2: snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id); break;
1325                 case 3: snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id); break;
1326                 case 4: snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8  RF/5",id); break;
1327                 case 5: snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8  RF/10",id); break;
1328                 case 6: snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5  RF/8",id); break;
1329                 case 7: snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10  RF/8",id); break;
1330                 case 8: snprintf(retStr,sizeof(buf),"%d - Manchester",id); break;
1331                 case 16: snprintf(retStr,sizeof(buf),"%d - Biphase",id); break;
1332                 case 0x18:snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id); break;
1333                 case 17: snprintf(retStr,sizeof(buf),"%d - Reserved",id); break;
1334                 default: snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id); break;
1335                 }
1336         return buf;
1337 }
1338
1339 char * GetModelStrFromCID(uint32_t cid){
1340
1341         static char buf[10];
1342         char *retStr = buf;
1343
1344         if (cid == 1) snprintf(retStr, sizeof(buf),"ATA5577M1");
1345         if (cid == 2) snprintf(retStr, sizeof(buf),"ATA5577M2");
1346         return buf;
1347 }
1348
1349 char * GetSelectedModulationStr( uint8_t id){
1350
1351         static char buf[20];
1352         char *retStr = buf;
1353
1354         switch (id){
1355                 case DEMOD_FSK: snprintf(retStr,sizeof(buf),"FSK");     break;
1356                 case DEMOD_FSK1: snprintf(retStr,sizeof(buf),"FSK1"); break;
1357                 case DEMOD_FSK1a: snprintf(retStr,sizeof(buf),"FSK1a"); break;
1358                 case DEMOD_FSK2: snprintf(retStr,sizeof(buf),"FSK2"); break;
1359                 case DEMOD_FSK2a: snprintf(retStr,sizeof(buf),"FSK2a"); break;
1360                 case DEMOD_ASK: snprintf(retStr,sizeof(buf),"ASK"); break;
1361                 case DEMOD_NRZ: snprintf(retStr,sizeof(buf),"DIRECT/NRZ"); break;
1362                 case DEMOD_PSK1: snprintf(retStr,sizeof(buf),"PSK1"); break;
1363                 case DEMOD_PSK2: snprintf(retStr,sizeof(buf),"PSK2"); break;
1364                 case DEMOD_PSK3: snprintf(retStr,sizeof(buf),"PSK3"); break;
1365                 case DEMOD_BI: snprintf(retStr,sizeof(buf),"BIPHASE"); break;
1366                 case DEMOD_BIa: snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)"); break;
1367                 default: snprintf(retStr,sizeof(buf),"(Unknown)"); break;
1368                 }
1369         return buf;
1370 }
1371
1372 void t55x7_create_config_block( int tagtype ){
1373
1374         /*
1375      T55X7_DEFAULT_CONFIG_BLOCK, T55X7_RAW_CONFIG_BLOCK
1376      T55X7_EM_UNIQUE_CONFIG_BLOCK, T55X7_FDXB_CONFIG_BLOCK,
1377          T55X7_FDXB_CONFIG_BLOCK, T55X7_HID_26_CONFIG_BLOCK, T55X7_INDALA_64_CONFIG_BLOCK, T55X7_INDALA_224_CONFIG_BLOCK
1378          T55X7_GUARDPROXII_CONFIG_BLOCK, T55X7_VIKING_CONFIG_BLOCK,     T55X7_NORALYS_CONFIG_BLOCK, T55X7_IOPROX_CONFIG_BLOCK
1379         */
1380         static char buf[60];
1381         char *retStr = buf;
1382
1383         switch (tagtype){
1384                 case 0: snprintf(retStr, sizeof(buf),"%08X - T55X7 Default", T55X7_DEFAULT_CONFIG_BLOCK); break;
1385                 case 1: snprintf(retStr, sizeof(buf),"%08X - T55X7 Raw", T55X7_RAW_CONFIG_BLOCK); break;
1386                 case 2: snprintf(retStr, sizeof(buf),"%08X - T5555 Q5 Default", T5555_DEFAULT_CONFIG_BLOCK); break;
1387                 default:
1388                         break;
1389         }
1390         PrintAndLog(buf);
1391 }
1392
1393 int CmdResetRead(const char *Cmd) {
1394         UsbCommand c = {CMD_T55XX_RESET_READ, {0,0,0}};
1395
1396         clearCommandBuffer();
1397         SendCommand(&c);
1398         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1399                 PrintAndLog("command execution time out");
1400                 return 0;
1401         }
1402
1403         uint8_t got[BIGBUF_SIZE-1];
1404         GetFromBigBuf(got,sizeof(got),0);
1405         WaitForResponse(CMD_ACK,NULL);
1406         setGraphBuf(got, sizeof(got));
1407         return 1;
1408 }
1409 // ADD T5555 (Q5) Default config block
1410 int CmdT55xxWipe(const char *Cmd) {
1411         char writeData[20] = {0};
1412         char *ptrData = writeData;
1413         char cmdp = param_getchar(Cmd, 0);
1414         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_wipe();
1415
1416         bool Q5 = (cmdp == 'q' || cmdp == 'Q');
1417
1418         // Try with the default password to reset block 0
1419         // With a pwd should work even if pwd bit not set
1420         PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
1421
1422         if ( Q5 ){
1423                 snprintf(ptrData,sizeof(writeData),"b 0 d 6001F004 p 0");
1424         } else {
1425                 snprintf(ptrData,sizeof(writeData),"b 0 d 000880E0 p 0");
1426         }
1427
1428         if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk 0");
1429
1430         for (uint8_t blk = 1; blk<8; blk++) {
1431
1432                 snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);
1433
1434                 if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk %d", blk);
1435
1436                 memset(writeData,0x00, sizeof(writeData));
1437         }
1438         return 0;
1439 }
1440
1441 int CmdT55xxBruteForce(const char *Cmd) {
1442
1443         // load a default pwd file.
1444         char buf[9];
1445         char filename[FILE_PATH_SIZE]={0};
1446         int     keycnt = 0;
1447         int ch;
1448         uint8_t stKeyBlock = 20;
1449         uint8_t *keyBlock = NULL, *p = NULL;
1450     uint32_t start_password = 0x00000000; //start password
1451     uint32_t end_password   = 0xFFFFFFFF; //end   password
1452     bool found = false;
1453
1454     char cmdp = param_getchar(Cmd, 0);
1455         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce();
1456
1457         keyBlock = calloc(stKeyBlock, 6);
1458         if (keyBlock == NULL) return 1;
1459
1460         if (cmdp == 'i' || cmdp == 'I') {
1461
1462                 int len = strlen(Cmd+2);
1463                 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1464                 memcpy(filename, Cmd+2, len);
1465
1466                 FILE * f = fopen( filename , "r");
1467
1468                 if ( !f ) {
1469                         PrintAndLog("File: %s: not found or locked.", filename);
1470                         free(keyBlock);
1471                         return 1;
1472                 }
1473
1474                 while( fgets(buf, sizeof(buf), f) ){
1475                         if (strlen(buf) < 8 || buf[7] == '\n') continue;
1476
1477                         while (fgetc(f) != '\n' && !feof(f)) ;  //goto next line
1478
1479                         //The line start with # is comment, skip
1480                         if( buf[0]=='#' ) continue;
1481
1482                         if (!isxdigit(buf[0])){
1483                                 PrintAndLog("File content error. '%s' must include 8 HEX symbols", buf);
1484                                 continue;
1485                         }
1486
1487                         buf[8] = 0;
1488
1489                         if ( stKeyBlock - keycnt < 2) {
1490                                 p = realloc(keyBlock, 6*(stKeyBlock+=10));
1491                                 if (!p) {
1492                                         PrintAndLog("Cannot allocate memory for defaultKeys");
1493                                         free(keyBlock);
1494                                         fclose(f);
1495                                         return 2;
1496                                 }
1497                                 keyBlock = p;
1498                         }
1499                         memset(keyBlock + 4 * keycnt, 0, 4);
1500                         num_to_bytes(strtoll(buf, NULL, 16), 4, keyBlock + 4*keycnt);
1501                         PrintAndLog("chk custom pwd[%2d] %08X", keycnt, bytes_to_num(keyBlock + 4*keycnt, 4));
1502                         keycnt++;
1503                         memset(buf, 0, sizeof(buf));
1504                 }
1505                 fclose(f);
1506
1507                 if (keycnt == 0) {
1508                         PrintAndLog("No keys found in file");
1509                         free(keyBlock);
1510                         return 1;
1511                 }
1512                 PrintAndLog("Loaded %d keys", keycnt);
1513
1514                 // loop
1515                 uint64_t testpwd = 0x00;
1516                 for (uint16_t c = 0; c < keycnt; ++c ) {
1517
1518                         if (ukbhit()) {
1519                                 ch = getchar();
1520                                 (void)ch;
1521                                 printf("\naborted via keyboard!\n");
1522                                 free(keyBlock);
1523                                 return 0;
1524                         }
1525
1526                         testpwd = bytes_to_num(keyBlock + 4*c, 4);
1527
1528                         PrintAndLog("Testing %08X", testpwd);
1529
1530
1531                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {
1532                                 PrintAndLog("Aquireing data from device failed. Quitting");
1533                                 free(keyBlock);
1534                                 return 0;
1535                         }
1536
1537                         found = tryDetectModulation();
1538
1539                         if ( found ) {
1540                                 PrintAndLog("Found valid password: [%08X]", testpwd);
1541                                 free(keyBlock);
1542                                 return 0;
1543                         }
1544                 }
1545                 PrintAndLog("Password NOT found.");
1546                 free(keyBlock);
1547                 return 0;
1548         }
1549
1550         // Try to read Block 7, first :)
1551
1552         // incremental pwd range search
1553     start_password = param_get32ex(Cmd, 0, 0, 16);
1554         end_password = param_get32ex(Cmd, 1, 0, 16);
1555
1556         if ( start_password >= end_password ) {
1557                 free(keyBlock);
1558                 return usage_t55xx_bruteforce();
1559         }
1560
1561     PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);
1562
1563     uint32_t i = start_password;
1564
1565     while ((!found) && (i <= end_password)){
1566
1567                 printf(".");
1568                 fflush(stdout);
1569                 if (ukbhit()) {
1570                         ch = getchar();
1571                         (void)ch;
1572                         printf("\naborted via keyboard!\n");
1573                         free(keyBlock);
1574                         return 0;
1575                 }
1576
1577                 if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {
1578                         PrintAndLog("Aquireing data from device failed. Quitting");
1579                         free(keyBlock);
1580                         return 0;
1581                 }
1582                 found = tryDetectModulation();
1583
1584                 if (found) break;
1585                 i++;
1586     }
1587
1588     PrintAndLog("");
1589
1590     if (found)
1591                 PrintAndLog("Found valid password: [%08x]", i);
1592     else
1593                 PrintAndLog("Password NOT found. Last tried: [%08x]", --i);
1594
1595         free(keyBlock);
1596     return 0;
1597 }
1598
1599 int tryOnePassword(uint32_t password) {
1600         PrintAndLog("Trying password %08x", password);
1601         if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, password)) {
1602                 PrintAndLog("Aquireing data from device failed. Quitting");
1603                 return -1;
1604         }
1605
1606         if (tryDetectModulation())
1607                 return 1;
1608         else return 0;
1609 }
1610
1611 int CmdT55xxRecoverPW(const char *Cmd) {
1612         int bit = 0;
1613         uint32_t orig_password = 0x0;
1614         uint32_t curr_password = 0x0;
1615         uint32_t prev_password = 0xffffffff;
1616         uint32_t mask = 0x0;
1617         int found = 0;
1618
1619         char cmdp = param_getchar(Cmd, 0);
1620         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_recoverpw();
1621
1622         orig_password = param_get32ex(Cmd, 0, 0x51243648, 16); //password used by handheld cloners
1623
1624         // first try fliping each bit in the expected password
1625         while ((found != 1) && (bit < 32)) {
1626                 curr_password = orig_password ^ ( 1 << bit );
1627                 found = tryOnePassword(curr_password);
1628                 if (found == 1)
1629                         goto done;
1630                 else if (found == -1)
1631                         return 0;
1632                 bit++;
1633         }
1634
1635         // now try to use partial original password, since block 7 should have been completely
1636         // erased during the write sequence and it is possible that only partial password has been
1637         // written
1638         // not sure from which end the bit bits are written, so try from both ends
1639         // from low bit to high bit
1640         bit = 0;
1641         while ((found != 1) && (bit < 32)) {
1642                 mask += ( 1 << bit );
1643                 curr_password = orig_password & mask;
1644                 // if updated mask didn't change the password, don't try it again
1645                 if (prev_password == curr_password) {
1646                         bit++;
1647                         continue;
1648                 }
1649                 found = tryOnePassword(curr_password);
1650                 if (found == 1)
1651                         goto done;
1652                 else if (found == -1)
1653                         return 0;
1654                 bit++;
1655                 prev_password=curr_password;
1656         }
1657
1658         // from high bit to low
1659         bit = 0;
1660         mask = 0xffffffff;
1661         while ((found != 1) && (bit < 32)) {
1662                 mask -= ( 1 << bit );
1663                 curr_password = orig_password & mask;
1664                 // if updated mask didn't change the password, don't try it again
1665                 if (prev_password == curr_password) {
1666                         bit++;
1667                         continue;
1668                 }
1669                 found = tryOnePassword(curr_password);
1670                 if (found == 1)
1671                         goto done;
1672                 else if (found == -1)
1673                         return 0;
1674                 bit++;
1675                 prev_password=curr_password;
1676         }
1677 done:
1678         PrintAndLog("");
1679
1680         if (found == 1)
1681                 PrintAndLog("Found valid password: [%08x]", curr_password);
1682         else
1683                 PrintAndLog("Password NOT found.");
1684
1685         return 0;
1686 }
1687
1688 static command_t CommandTable[] = {
1689         {"help",                CmdHelp,           1, "This help"},
1690         {"bruteforce",  CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},
1691         {"config",              CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
1692         {"detect",              CmdT55xxDetect,    1, "[1] Try detecting the tag modulation from reading the configuration block."},
1693         {"dump",                CmdT55xxDump,      0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
1694         {"info",                CmdT55xxInfo,      1, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
1695         {"read",                CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
1696         {"resetread",   CmdResetRead,      0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
1697         {"recoverpw",   CmdT55xxRecoverPW, 0, "[password] Try to recover from bad password write from a cloner. Only use on PW protected chips!"},
1698         {"special",             special,           0, "Show block changes with 64 different offsets"},
1699         {"trace",               CmdT55xxReadTrace, 1, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},
1700         {"wakeup",              CmdT55xxWakeUp,    0, "Send AOR wakeup command"},
1701         {"wipe",                CmdT55xxWipe,      0, "[q] Wipe a T55xx tag and set defaults (will destroy any data on tag)"},
1702         {"write",               CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
1703         {NULL, NULL, 0, NULL}
1704 };
1705
1706 int CmdLFT55XX(const char *Cmd) {
1707         clearCommandBuffer();
1708         CmdsParse(CommandTable, Cmd);
1709         return 0;
1710 }
1711
1712 int CmdHelp(const char *Cmd) {
1713         CmdsHelp(CommandTable);
1714         return 0;
1715 }