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

   1 //-----------------------------------------------------------------------------
   2 // Ultralight Code (c) 2013,2014 Midnitesnake & Andy Davies of Pentura
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // High frequency MIFARE ULTRALIGHT (C) commands
   9 //-----------------------------------------------------------------------------
  10 #include "loclass/des.h"
  11 #include "cmdhfmfu.h"
  12 #include "cmdhfmf.h"
  13 #include "cmdhf14a.h"
  14
  15
  16 #define MAX_ULTRA_BLOCKS   0x0f
  17 #define MAX_ULTRAC_BLOCKS  0x2f
  18 //#define MAX_ULTRAC_BLOCKS  0x2c
  19
  20
  21 static int CmdHelp(const char *Cmd);
  22
  23 int CmdHF14AMfUInfo(const char *Cmd){
  24
  25         uint8_t datatemp[7] = {0x00};
  26         uint8_t isOK  = 0;
  27         uint8_t *data = NULL;
  28
  29         UsbCommand c = {CMD_MIFAREU_READCARD, {0, 4}};
  30         SendCommand(&c);
  31         UsbCommand resp;
  32
  33         if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
  34                 isOK  = resp.arg[0] & 0xff;
  35                 data  = resp.d.asBytes;
  36
  37                 if (!isOK) {
  38                         PrintAndLog("Error reading from tag");
  39                         return -1;
  40                 }
  41         } else {
  42                 PrintAndLog("Command execute timed out");
  43                 return -1;
  44         }
  45
  46         PrintAndLog("");
  47         PrintAndLog("-- Mifare Ultralight / Ultralight-C Tag Information ---------");
  48         PrintAndLog("-------------------------------------------------------------");
  49
  50         // UID
  51         memcpy( datatemp, data, 3);
  52         memcpy( datatemp+3, data+4, 4);
  53
  54         PrintAndLog("MANUFACTURER : %s", getTagInfo(datatemp[0]));
  55         PrintAndLog("         UID : %s ", sprint_hex(datatemp, 7));
  56         // BBC
  57         // CT (cascade tag byte) 0x88 xor SN0 xor SN1 xor SN2
  58         int crc0 = 0x88 ^ data[0] ^ data[1] ^data[2];
  59         if ( data[3] == crc0 )
  60                 PrintAndLog("        BCC0 : %02x - Ok", data[3]);
  61         else
  62                 PrintAndLog("        BCC0 : %02x - crc should be %02x", data[3], crc0);
  63
  64         int crc1 = data[4] ^ data[5] ^ data[6] ^data[7];
  65         if ( data[8] == crc1 )
  66                 PrintAndLog("        BCC1 : %02x - Ok", data[8]);
  67         else
  68                 PrintAndLog("        BCC1 : %02x - crc should be %02x", data[8], crc1 );
  69
  70         PrintAndLog("    Internal : %s ", sprint_hex(data + 9, 1));
  71
  72         memcpy(datatemp, data+10, 2);
  73         PrintAndLog("        Lock : %s - %s", sprint_hex(datatemp, 2),printBits( 2, &datatemp) );
  74         PrintAndLog("  OneTimePad : %s ", sprint_hex(data + 3*4, 4));
  75         PrintAndLog("");
  76
  77         int len = CmdHF14AMfucAuth("K 0");
  78 //      PrintAndLog("CODE: %d",len);
  79
  80         PrintAndLog("Seems to be a Ultralight %s", (len==0) ? "-C" :"");
  81         return 0;
  82 }
  83
  84 //
  85 //  Mifare Ultralight Write Single Block
  86 //
  87 int CmdHF14AMfUWrBl(const char *Cmd){
  88         uint8_t blockNo    = -1;
  89         bool chinese_card  = FALSE;
  90         uint8_t bldata[16] = {0x00};
  91         UsbCommand resp;
  92
  93         char cmdp = param_getchar(Cmd, 0);
  94         if (strlen(Cmd) < 3 || cmdp == 'h' || cmdp == 'H') {
  95                 PrintAndLog("Usage:  hf mfu wrbl <block number> <block data (8 hex symbols)> [w]");
  96                 PrintAndLog("       [block number]");
  97                 PrintAndLog("       [block data] - (8 hex symbols)");
  98                 PrintAndLog("       [w] - Chinese magic ultralight tag");
  99                 PrintAndLog("");
 100                 PrintAndLog("        sample: hf mfu wrbl 0 01020304");
 101                 PrintAndLog("");
 102                 return 0;
 103         }
 104
 105         blockNo = param_get8(Cmd, 0);
 106
 107         if (blockNo > MAX_ULTRA_BLOCKS){
 108                 PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight Cards!");
 109                 return 1;
 110         }
 111
 112         if (param_gethex(Cmd, 1, bldata, 8)) {
 113                 PrintAndLog("Block data must include 8 HEX symbols");
 114                 return 1;
 115         }
 116
 117         if (strchr(Cmd,'w') != 0  || strchr(Cmd,'W') != 0 ) {
 118                 chinese_card = TRUE;
 119         }
 120
 121         if ( blockNo <= 3) {
 122                 if (!chinese_card){
 123                         PrintAndLog("Access Denied");
 124                 } else {
 125                         PrintAndLog("--specialblock no:%02x", blockNo);
 126                         PrintAndLog("--data: %s", sprint_hex(bldata, 4));
 127                         UsbCommand d = {CMD_MIFAREU_WRITEBL, {blockNo}};
 128                         memcpy(d.d.asBytes,bldata, 4);
 129                         SendCommand(&d);
 130                         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 131                                 uint8_t isOK  = resp.arg[0] & 0xff;
 132                                 PrintAndLog("isOk:%02x", isOK);
 133                         } else {
 134                                 PrintAndLog("Command execute timeout");
 135                         }
 136                 }
 137         } else {
 138                 PrintAndLog("--block no:%02x", blockNo);
 139                 PrintAndLog("--data: %s", sprint_hex(bldata, 4));
 140                 UsbCommand e = {CMD_MIFAREU_WRITEBL, {blockNo}};
 141                 memcpy(e.d.asBytes,bldata, 4);
 142                 SendCommand(&e);
 143                 if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 144                         uint8_t isOK  = resp.arg[0] & 0xff;
 145                         PrintAndLog("isOk:%02x", isOK);
 146                 } else {
 147                         PrintAndLog("Command execute timeout");
 148                 }
 149         }
 150         return 0;
 151 }
 152
 153 //
 154 //  Mifare Ultralight Read Single Block
 155 //
 156 int CmdHF14AMfURdBl(const char *Cmd){
 157
 158         uint8_t blockNo = -1;
 159
 160         char cmdp = param_getchar(Cmd, 0);
 161
 162         if (strlen(Cmd) < 1 || cmdp == 'h' || cmdp == 'H') {
 163                 PrintAndLog("Usage:  hf mfu rdbl <block number>");
 164                 PrintAndLog("        sample: hfu mfu rdbl 0");
 165                 return 0;
 166         }
 167
 168         blockNo = param_get8(Cmd, 0);
 169
 170         if (blockNo > MAX_ULTRA_BLOCKS){
 171            PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight Cards!");
 172            return 1;
 173         }
 174
 175         PrintAndLog("--block no:0x%02X (%d)", (int)blockNo, blockNo);
 176         UsbCommand c = {CMD_MIFAREU_READBL, {blockNo}};
 177         SendCommand(&c);
 178
 179         UsbCommand resp;
 180         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 181                 uint8_t isOK    = resp.arg[0] & 0xff;
 182                 uint8_t * data  = resp.d.asBytes;
 183
 184                 PrintAndLog("isOk: %02x", isOK);
 185
 186                 if (isOK)
 187                         PrintAndLog("Data: %s", sprint_hex(data, 4));
 188         } else {
 189                 PrintAndLog("Command execute timeout");
 190         }
 191         return 0;
 192 }
 193
 194 //
 195 //  Mifare Ultralight / Ultralight-C;  Read and Dump Card Contents
 196 //
 197 int CmdHF14AMfUDump(const char *Cmd){
 198
 199         FILE *fout;
 200         char filename[FILE_PATH_SIZE] = {0x00};
 201         char * fnameptr = filename;
 202
 203         uint8_t *lockbytes_t = NULL;
 204         uint8_t lockbytes[2] = {0x00};
 205
 206         uint8_t *lockbytes_t2 = NULL;
 207         uint8_t lockbytes2[2] = {0x00};
 208
 209         bool bit[16]  = {0x00};
 210         bool bit2[16] = {0x00};
 211
 212         int i;
 213         uint8_t BlockNo      = 0;
 214         int Pages            = 16;
 215
 216         bool tmplockbit          = false;
 217         uint8_t isOK         = 0;
 218         uint8_t *data       = NULL;
 219
 220         char cmdp = param_getchar(Cmd, 0);
 221
 222         if (cmdp == 'h' || cmdp == 'H') {
 223                 PrintAndLog("Reads all pages from Mifare Ultralight or Ultralight-C tag.");
 224                 PrintAndLog("It saves binary dump into the file `filename.bin` or `cardUID.bin`");
 225                 PrintAndLog("Usage:  hf mfu dump <c> <filename w/o .bin>");
 226                 PrintAndLog("     <c>  optional cardtype c == Ultralight-C, if not defaults to Ultralight");
 227                 PrintAndLog("     sample: hf mfu dump");
 228                 PrintAndLog("           : hf mfu dump myfile");
 229                 PrintAndLog("           : hf mfu dump c myfile");
 230                 return 0;
 231         }
 232
 233         // UL or UL-C?
 234         Pages = (cmdp == 'c' || cmdp == 'C') ? 44 : 16;
 235
 236         PrintAndLog("Dumping Ultralight%s Card Data...", (Pages ==16)?"":"-C");
 237
 238         UsbCommand c = {CMD_MIFAREU_READCARD, {BlockNo,Pages}};
 239         SendCommand(&c);
 240         UsbCommand resp;
 241
 242         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 243                 isOK  = resp.arg[0] & 0xff;
 244                 if (!isOK) {
 245                         PrintAndLog("Command error");
 246                         return 0;
 247                 }
 248                 data  = resp.d.asBytes;
 249         } else {
 250                 PrintAndLog("Command execute timeout");
 251                 return 0;
 252         }
 253
 254         // Load lock bytes.
 255         int j = 0;
 256
 257         lockbytes_t = data + 8;
 258         lockbytes[0] = lockbytes_t[2];
 259         lockbytes[1] = lockbytes_t[3];
 260         for(j = 0; j < 16; j++){
 261                 bit[j] = lockbytes[j/8] & ( 1 <<(7-j%8));
 262         }
 263
 264         // Load bottom lockbytes if available
 265         if ( Pages == 44 ) {
 266
 267                 lockbytes_t2 = data + (40*4);
 268                 lockbytes2[0] = lockbytes_t2[2];
 269                 lockbytes2[1] = lockbytes_t2[3];
 270                 for (j = 0; j < 16; j++) {
 271                         bit2[j] = lockbytes2[j/8] & ( 1 <<(7-j%8));
 272                 }
 273         }
 274
 275         for (i = 0; i < Pages; ++i) {
 276
 277                 if ( i < 3 ) {
 278                         PrintAndLog("Block %02x:%s ", i,sprint_hex(data + i * 4, 4));
 279                         continue;
 280                 }
 281
 282                 switch(i){
 283                         case 3: tmplockbit = bit[4]; break;
 284                         case 4: tmplockbit = bit[3]; break;
 285                         case 5: tmplockbit = bit[2]; break;
 286                         case 6: tmplockbit = bit[1]; break;
 287                         case 7: tmplockbit = bit[0]; break;
 288                         case 8: tmplockbit = bit[15]; break;
 289                         case 9: tmplockbit = bit[14]; break;
 290                         case 10: tmplockbit = bit[13]; break;
 291                         case 11: tmplockbit = bit[12]; break;
 292                         case 12: tmplockbit = bit[11]; break;
 293                         case 13: tmplockbit = bit[10]; break;
 294                         case 14: tmplockbit = bit[9]; break;
 295                         case 15: tmplockbit = bit[8]; break;
 296                         case 16:
 297                         case 17:
 298                         case 18:
 299                         case 19: tmplockbit = bit2[6]; break;
 300                         case 20:
 301                         case 21:
 302                         case 22:
 303                         case 23: tmplockbit = bit2[5]; break;
 304                         case 24:
 305                         case 25:
 306                         case 26:
 307                         case 27: tmplockbit = bit2[4]; break;
 308                         case 28:
 309                         case 29:
 310                         case 30:
 311                         case 31: tmplockbit = bit2[2]; break;
 312                         case 32:
 313                         case 33:
 314                         case 34:
 315                         case 35: tmplockbit = bit2[1]; break;
 316                         case 36:
 317                         case 37:
 318                         case 38:
 319                         case 39: tmplockbit = bit2[0]; break;
 320                         case 40: tmplockbit = bit2[12]; break;
 321                         case 41: tmplockbit = bit2[11]; break;
 322                         case 42: tmplockbit = bit2[10]; break; //auth0
 323                         case 43: tmplockbit = bit2[9]; break;  //auth1
 324                         default: break;
 325                 }
 326                 PrintAndLog("Block %02x:%s [%d]", i,sprint_hex(data + i * 4, 4),tmplockbit);
 327         }
 328
 329         int len = 0;
 330         if ( Pages == 16 )
 331                 len = param_getstr(Cmd,0,filename);
 332         else
 333                 len = param_getstr(Cmd,1,filename);
 334
 335         if (len > FILE_PATH_SIZE-5) len = FILE_PATH_SIZE-5;
 336
 337         // user supplied filename?
 338         if (len < 1) {
 339
 340                 // UID = data 0-1-2 4-5-6-7  (skips a beat)
 341                 sprintf(fnameptr,"%02X%02X%02X%02X%02X%02X%02X.bin",
 342                         data[0],data[1], data[2], data[4],data[5],data[6], data[7]);
 343
 344         } else {
 345                 sprintf(fnameptr + len," .bin");
 346         }
 347
 348
 349         if ((fout = fopen(filename,"wb")) == NULL) {
 350                 PrintAndLog("Could not create file name %s", filename);
 351                 return 1;
 352         }
 353         fwrite( data, 1, Pages*4, fout );
 354         fclose(fout);
 355
 356         PrintAndLog("Dumped %d pages, wrote %d bytes to %s", Pages, Pages*4, filename);
 357         return 0;
 358 }
 359
 360 // Needed to Authenticate to Ultralight C tags
 361 void rol (uint8_t *data, const size_t len){
 362         uint8_t first = data[0];
 363         for (size_t i = 0; i < len-1; i++) {
 364                 data[i] = data[i+1];
 365         }
 366         data[len-1] = first;
 367 }
 368
 369 //-------------------------------------------------------------------------------
 370 // Ultralight C Methods
 371 //-------------------------------------------------------------------------------
 372
 373 //
 374 // Ultralight C Authentication Demo {currently uses hard-coded key}
 375 //
 376 int CmdHF14AMfucAuth(const char *Cmd){
 377
 378         uint8_t default_keys[5][16] = {
 379                 { 0x42,0x52,0x45,0x41,0x4b,0x4d,0x45,0x49,0x46,0x59,0x4f,0x55,0x43,0x41,0x4e,0x21 },// 3des std key
 380                 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },// all zeroes
 381                 { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f },// 0x00-0x0F
 382                 { 0x49,0x45,0x4D,0x4B,0x41,0x45,0x52,0x42,0x21,0x4E,0x41,0x43,0x55,0x4F,0x59,0x46 },// NFC-key
 383                 { 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01 }     // all ones
 384         };
 385
 386         char cmdp = param_getchar(Cmd, 0);
 387
 388         uint8_t keyNo = 0;
 389         bool errors = false;
 390         //Change key to user defined one
 391         if (cmdp == 'k' || cmdp == 'K'){
 392                 keyNo = param_get8(Cmd, 1);
 393                 if(keyNo > 4) errors = true;
 394         }
 395
 396         if (cmdp == 'h' || cmdp == 'H') {
 397                 errors = true;
 398         }
 399
 400         if (errors) {
 401                 PrintAndLog("Usage:  hf mfu cauth k <key number>");
 402                 PrintAndLog("      0 (default): 3DES standard key");
 403                 PrintAndLog("      1 : all zeros key");
 404                 PrintAndLog("      2 : 0x00-0x0F key");
 405                 PrintAndLog("      3 : nfc key");
 406                 PrintAndLog("      4 : all ones key");
 407                 PrintAndLog("        sample : hf mfu cauth k");
 408                 PrintAndLog("               : hf mfu cauth k 3");
 409                 return 0;
 410         }
 411
 412         uint8_t random_a[8]     = { 1,1,1,1,1,1,1,1 };
 413         //uint8_t enc_random_a[8] = { 0 };
 414         uint8_t random_b[8]     = { 0 };
 415         uint8_t enc_random_b[8] = { 0 };
 416         uint8_t random_a_and_b[16] = { 0 };
 417         des3_context ctx        = { 0 };
 418         uint8_t *key = default_keys[keyNo];
 419         uint8_t blockNo = 0;
 420         uint32_t cuid = 0;
 421
 422         //Auth1
 423         UsbCommand c = {CMD_MIFAREUC_AUTH1, {blockNo}};
 424         SendCommand(&c);
 425         UsbCommand resp;
 426         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 427                 uint8_t isOK  = resp.arg[0] & 0xff;
 428                 cuid  = resp.arg[1];
 429                 uint8_t * data= resp.d.asBytes;
 430
 431                 if (isOK){
 432                         memcpy(enc_random_b,data+1,8);
 433                 } else {
 434                         PrintAndLog("Auth failed");
 435                         return 2; // auth failed.
 436                 }
 437         } else {
 438                 PrintAndLog("Command execute timeout");
 439                 return 1;
 440         }
 441         uint8_t iv[8]           = { 0 };
 442
 443         PrintAndLog("     RndA  :%s",sprint_hex(random_a, 8));
 444         PrintAndLog("     e_RndB:%s",sprint_hex(enc_random_b, 8));
 445
 446         des3_set2key_dec(&ctx, key);
 447
 448         des3_crypt_cbc(&ctx      // des3_context *ctx
 449                 , DES_DECRYPT        // int mode
 450                 , sizeof(random_b)   // size_t length
 451                 , iv                 // unsigned char iv[8]
 452                 , enc_random_b       // const unsigned char *input
 453                 , random_b           // unsigned char *output
 454                 );
 455
 456         PrintAndLog("     RndB:%s",sprint_hex(random_b, 8));
 457
 458         rol(random_b,8);
 459         memcpy(random_a_and_b  ,random_a,8);
 460         memcpy(random_a_and_b+8,random_b,8);
 461
 462         PrintAndLog("     RA+B:%s",sprint_hex(random_a_and_b, 16));
 463
 464         des3_set2key_enc(&ctx, key);
 465
 466         des3_crypt_cbc(&ctx          // des3_context *ctx
 467                 , DES_ENCRYPT            // int mode
 468                 , sizeof(random_a_and_b)   // size_t length
 469                 , enc_random_b           // unsigned char iv[8]
 470                 , random_a_and_b         // const unsigned char *input
 471                 , random_a_and_b         // unsigned char *output
 472                 );
 473
 474         PrintAndLog("enc(RA+B):%s",sprint_hex(random_a_and_b, 16));
 475
 476         //Auth2
 477         UsbCommand d = {CMD_MIFAREUC_AUTH2, {cuid}};
 478         memcpy(d.d.asBytes,random_a_and_b, 16);
 479         SendCommand(&d);
 480
 481         UsbCommand respb;
 482         if (WaitForResponseTimeout(CMD_ACK,&respb,1500)) {
 483                 uint8_t  isOK  = respb.arg[0] & 0xff;
 484                 uint8_t * data2= respb.d.asBytes;
 485
 486                 if (isOK){
 487                         PrintAndLog("enc(RndA'):%s", sprint_hex(data2+1, 8));
 488
 489                         uint8_t foo[8] = { 0 };
 490                         uint8_t bar[8] = { 0 };
 491                         memcpy(foo, data2+1, 8);
 492                         des3_set2key_enc(&ctx, key);
 493
 494                         des3_crypt_cbc(&ctx    // des3_context *ctx
 495                                 , DES_DECRYPT      // int mode
 496                                 , 8      // size_t length
 497                                 , enc_random_b     // unsigned char iv[8]
 498                                 , foo           // const unsigned char *input
 499                                 , bar   // unsigned char *output
 500                         );
 501
 502                         PrintAndLog("BAR:%s",sprint_hex(bar, 8));
 503
 504
 505                 } else {
 506                         return 2;
 507                 }
 508
 509         } else {
 510                 PrintAndLog("Command execute timeout");
 511                 return 1;
 512         }
 513         return 0;
 514 }
 515 /**
 516 A test function to validate that the polarssl-function works the same
 517 was as the openssl-implementation.
 518 Commented out, since it requires openssl
 519
 520 int CmdTestDES(const char * cmd)
 521 {
 522         uint8_t key[16] = {0x00};
 523
 524         memcpy(key,key3_3des_data,16);
 525         DES_cblock RndA, RndB;
 526
 527         PrintAndLog("----------OpenSSL DES implementation----------");
 528         {
 529                 uint8_t e_RndB[8] = {0x00};
 530                 unsigned char RndARndB[16] = {0x00};
 531
 532                 DES_cblock iv = { 0 };
 533                 DES_key_schedule ks1,ks2;
 534                 DES_cblock key1,key2;
 535
 536                 memcpy(key,key3_3des_data,16);
 537                 memcpy(key1,key,8);
 538                 memcpy(key2,key+8,8);
 539
 540
 541                 DES_set_key((DES_cblock *)key1,&ks1);
 542                 DES_set_key((DES_cblock *)key2,&ks2);
 543
 544                 DES_random_key(&RndA);
 545                 PrintAndLog("     RndA:%s",sprint_hex(RndA, 8));
 546                 PrintAndLog("     e_RndB:%s",sprint_hex(e_RndB, 8));
 547                 //void DES_ede2_cbc_encrypt(const unsigned char *input,
 548                 //    unsigned char *output, long length, DES_key_schedule *ks1,
 549                 //    DES_key_schedule *ks2, DES_cblock *ivec, int enc);
 550                 DES_ede2_cbc_encrypt(e_RndB,RndB,sizeof(e_RndB),&ks1,&ks2,&iv,0);
 551
 552                 PrintAndLog("     RndB:%s",sprint_hex(RndB, 8));
 553                 rol(RndB,8);
 554                 memcpy(RndARndB,RndA,8);
 555                 memcpy(RndARndB+8,RndB,8);
 556                 PrintAndLog("     RA+B:%s",sprint_hex(RndARndB, 16));
 557                 DES_ede2_cbc_encrypt(RndARndB,RndARndB,sizeof(RndARndB),&ks1,&ks2,&e_RndB,1);
 558                 PrintAndLog("enc(RA+B):%s",sprint_hex(RndARndB, 16));
 559
 560         }
 561         PrintAndLog("----------PolarSSL implementation----------");
 562         {
 563                 uint8_t random_a[8]     = { 0 };
 564                 uint8_t enc_random_a[8] = { 0 };
 565                 uint8_t random_b[8]     = { 0 };
 566                 uint8_t enc_random_b[8] = { 0 };
 567                 uint8_t random_a_and_b[16] = { 0 };
 568                 des3_context ctx        = { 0 };
 569
 570                 memcpy(random_a, RndA,8);
 571
 572                 uint8_t output[8]       = { 0 };
 573                 uint8_t iv[8]           = { 0 };
 574
 575                 PrintAndLog("     RndA  :%s",sprint_hex(random_a, 8));
 576                 PrintAndLog("     e_RndB:%s",sprint_hex(enc_random_b, 8));
 577
 578                 des3_set2key_dec(&ctx, key);
 579
 580                 des3_crypt_cbc(&ctx      // des3_context *ctx
 581                         , DES_DECRYPT        // int mode
 582                         , sizeof(random_b)   // size_t length
 583                         , iv                 // unsigned char iv[8]
 584                         , enc_random_b       // const unsigned char *input
 585                         , random_b           // unsigned char *output
 586                         );
 587
 588                 PrintAndLog("     RndB:%s",sprint_hex(random_b, 8));
 589
 590                 rol(random_b,8);
 591                 memcpy(random_a_and_b  ,random_a,8);
 592                 memcpy(random_a_and_b+8,random_b,8);
 593
 594                 PrintAndLog("     RA+B:%s",sprint_hex(random_a_and_b, 16));
 595
 596                 des3_set2key_enc(&ctx, key);
 597
 598                 des3_crypt_cbc(&ctx          // des3_context *ctx
 599                         , DES_ENCRYPT            // int mode
 600                         , sizeof(random_a_and_b)   // size_t length
 601                         , enc_random_b           // unsigned char iv[8]
 602                         , random_a_and_b         // const unsigned char *input
 603                         , random_a_and_b         // unsigned char *output
 604                         );
 605
 606                 PrintAndLog("enc(RA+B):%s",sprint_hex(random_a_and_b, 16));
 607         }
 608         return 0;
 609 }
 610 **/
 611 //
 612 // Ultralight C Read Single Block
 613 //
 614 int CmdHF14AMfUCRdBl(const char *Cmd)
 615 {
 616         bool hasPwd = FALSE;
 617         uint8_t blockNo = -1;
 618         unsigned char key[16];
 619         char cmdp = param_getchar(Cmd, 0);
 620
 621         if (strlen(Cmd) < 1 || cmdp == 'h' || cmdp == 'H') {
 622                 PrintAndLog("Usage:  hf mfu crdbl  <block number> <password>");
 623                 PrintAndLog("");
 624                 PrintAndLog("sample: hf mfu crdbl 0");
 625                 PrintAndLog("        hf mfu crdbl 0 1122334455667788");
 626                 return 0;
 627         }
 628
 629         blockNo = param_get8(Cmd, 0);
 630         if (blockNo < 0) {
 631                 PrintAndLog("Wrong block number");
 632                 return 1;
 633         }
 634
 635         if (blockNo > MAX_ULTRAC_BLOCKS ){
 636                 PrintAndLog("Error: Maximum number of readable blocks is 47 for Ultralight-C Cards!");
 637                 return 1;
 638         }
 639
 640         // key
 641         if ( strlen(Cmd) > 3){
 642                 if (param_gethex(Cmd, 1, key, 16)) {
 643                         PrintAndLog("Key must include %d HEX symbols", 16);
 644                         return 1;
 645                 } else {
 646                         hasPwd = TRUE;
 647                 }
 648         }
 649
 650         if ( hasPwd )
 651                 PrintAndLog("--block no: 0x%02X (%d) PWD: %s", (int)blockNo, blockNo, key);
 652         else
 653                 PrintAndLog("--block no: 0x%02X (%d)", (int)blockNo, blockNo);
 654
 655         //Read Block
 656         UsbCommand c = {CMD_MIFAREU_READBL, {blockNo}};
 657         if ( hasPwd ) {
 658                 c.arg[1] = 1;
 659                 memcpy(c.d.asBytes,key,16);
 660         }
 661         SendCommand(&c);
 662         UsbCommand resp;
 663         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 664                 uint8_t isOK = resp.arg[0] & 0xff;
 665                 uint8_t *data = resp.d.asBytes;
 666
 667                 PrintAndLog("isOk: %02x", isOK);
 668                 if (isOK)
 669                         PrintAndLog("Data: %s", sprint_hex(data, 4));
 670
 671         } else {
 672                 PrintAndLog("Command execute timeout");
 673         }
 674         return 0;
 675 }
 676
 677 //
 678 //  Mifare Ultralight C Write Single Block
 679 //
 680 int CmdHF14AMfUCWrBl(const char *Cmd){
 681
 682         uint8_t blockNo = -1;
 683         bool chinese_card = FALSE;
 684         uint8_t bldata[16] = {0x00};
 685         UsbCommand resp;
 686
 687         char cmdp = param_getchar(Cmd, 0);
 688
 689         if (strlen(Cmd) < 3 || cmdp == 'h' || cmdp == 'H') {
 690                 PrintAndLog("Usage:  hf mfu cwrbl <block number> <block data (8 hex symbols)> [w]");
 691                 PrintAndLog("       [block number]");
 692                 PrintAndLog("       [block data] - (8 hex symbols)");
 693                 PrintAndLog("       [w] - Chinese magic ultralight tag");
 694                 PrintAndLog("");
 695                 PrintAndLog("        sample: hf mfu cwrbl 0 01020304");
 696                 PrintAndLog("");
 697                 return 0;
 698         }
 699
 700         blockNo = param_get8(Cmd, 0);
 701         if (blockNo > MAX_ULTRAC_BLOCKS ){
 702                 PrintAndLog("Error: Maximum number of blocks is 47 for Ultralight-C Cards!");
 703                 return 1;
 704         }
 705
 706         if (param_gethex(Cmd, 1, bldata, 8)) {
 707                 PrintAndLog("Block data must include 8 HEX symbols");
 708                 return 1;
 709         }
 710
 711         if (strchr(Cmd,'w') != 0  || strchr(Cmd,'W') != 0 ) {
 712                 chinese_card = TRUE;
 713         }
 714
 715         if ( blockNo <= 3 ) {
 716                 if (!chinese_card){
 717                          PrintAndLog("Access Denied");
 718                 } else {
 719                         PrintAndLog("--Special block no: 0x%02x", blockNo);
 720                         PrintAndLog("--Data: %s", sprint_hex(bldata, 4));
 721                         UsbCommand d = {CMD_MIFAREU_WRITEBL, {blockNo}};
 722                         memcpy(d.d.asBytes,bldata, 4);
 723                         SendCommand(&d);
 724                         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 725                                 uint8_t isOK  = resp.arg[0] & 0xff;
 726                                 PrintAndLog("isOk:%02x", isOK);
 727                         } else {
 728                                 PrintAndLog("Command execute timeout");
 729                         }
 730                 }
 731         } else {
 732                         PrintAndLog("--Block no : 0x%02x", blockNo);
 733                         PrintAndLog("--Data: %s", sprint_hex(bldata, 4));
 734                         UsbCommand e = {CMD_MIFAREU_WRITEBL, {blockNo}};
 735                         memcpy(e.d.asBytes,bldata, 4);
 736                         SendCommand(&e);
 737                         if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 738                                 uint8_t isOK  = resp.arg[0] & 0xff;
 739                                 PrintAndLog("isOk : %02x", isOK);
 740                         } else {
 741                                 PrintAndLog("Command execute timeout");
 742                         }
 743         }
 744         return 0;
 745 }
 746
 747 //------------------------------------
 748 // Menu Stuff
 749 //------------------------------------
 750 static command_t CommandTable[] =
 751 {
 752         {"help",        CmdHelp,                        1,"This help"},
 753         {"dbg",         CmdHF14AMfDbg,          0,"Set default debug mode"},
 754         {"info",        CmdHF14AMfUInfo,        0,"Taginfo"},
 755         {"dump",        CmdHF14AMfUDump,        0,"Dump MIFARE Ultralight / Ultralight-C tag to binary file"},
 756         {"rdbl",        CmdHF14AMfURdBl,        0,"Read block - MIFARE Ultralight"},
 757         {"wrbl",        CmdHF14AMfUWrBl,        0,"Write block - MIFARE Ultralight"},
 758         {"crdbl",       CmdHF14AMfUCRdBl,       0,"Read block - MIFARE Ultralight C"},
 759         {"cwrbl",       CmdHF14AMfUCWrBl,       0,"Write MIFARE Ultralight C block"},
 760         {"cauth",       CmdHF14AMfucAuth,       0,"try a Ultralight C Authentication"},
 761         //{"testdes", CmdTestDES ,        1, "Test DES"},
 762         {NULL, NULL, 0, NULL}
 763 };
 764
 765 int CmdHFMFUltra(const char *Cmd){
 766         WaitForResponseTimeout(CMD_ACK,NULL,100);
 767         CmdsParse(CommandTable, Cmd);
 768         return 0;
 769 }
 770
 771 int CmdHelp(const char *Cmd){
 772         CmdsHelp(CommandTable);
 773         return 0;
 774 }