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

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   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 // Low frequency HID commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include "cmdlfhid.h"
  12
  13 #ifndef BITS
  14 # define BITS 96
  15 #endif
  16
  17 static int CmdHelp(const char *Cmd);
  18
  19 int usage_lf_hid_wiegand(void){
  20         PrintAndLog("This command converts facility code/card number to Wiegand code");
  21         PrintAndLog("Usage: lf hid wiegand [h] [OEM] [FC] [CN]");
  22
  23         PrintAndLog("Options:");
  24         PrintAndLog("       h             - This help");
  25         PrintAndLog("       OEM           - OEM number / site code");
  26         PrintAndLog("       FC            - facility code");
  27         PrintAndLog("       CN            - card number");
  28         PrintAndLog("Examples:");
  29         PrintAndLog("      lf hid wiegand 0 101 2001");
  30         return 0;
  31 }
  32 int usage_lf_hid_sim(void){
  33         PrintAndLog("HID Tag simulator");
  34         PrintAndLog("");
  35         PrintAndLog("Usage:  lf hid sim [h] [ID]");
  36         PrintAndLog("Options:");
  37         PrintAndLog("       h   - This help");
  38         PrintAndLog("       ID  - HID id");
  39         PrintAndLog("Examples:");
  40         PrintAndLog("      lf hid sim 224");
  41         return 0;
  42 }
  43 int usage_lf_hid_clone(void){
  44         PrintAndLog("Clone HID to T55x7.  Tag must be on antenna. ");
  45         PrintAndLog("");
  46         PrintAndLog("Usage:  lf hid clone [h] [ID] <L>");
  47         PrintAndLog("Options:");
  48         PrintAndLog("       h   - This help");
  49         PrintAndLog("       ID  - HID id");
  50         PrintAndLog("       L   - 84bit ID");
  51         PrintAndLog("Examples:");
  52         PrintAndLog("      lf hid clone 224");
  53         PrintAndLog("      lf hid clone 224 L");
  54         return 0;
  55 }
  56 int usage_lf_hid_brute(void){
  57         PrintAndLog("Enables bruteforce of HID readers with specified facility code.");
  58         PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
  59         PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
  60         PrintAndLog("");
  61         PrintAndLog("Usage:  lf hid brute [h] a <format> f <facility-code> c <cardnumber> d <delay>");
  62         PrintAndLog("Options :");
  63         PrintAndLog("       h                 :  This help");
  64         PrintAndLog("       a <format>        :  26|33|34|35|37|40|44|84");
  65         PrintAndLog("       f <facility-code> :  8-bit value HID facility code");
  66         PrintAndLog("       c <cardnumber>    :  (optional) cardnumber to start with, max 65535");
  67         PrintAndLog("       d <delay>         :  delay betweens attempts in ms. Default 1000ms");
  68         PrintAndLog("");
  69         PrintAndLog("Samples:");
  70         PrintAndLog("       lf hid brute a 26 f 224");
  71         PrintAndLog("       lf hid brute a 26 f 21 d 2000");
  72         PrintAndLog("       lf hid brute a 26 f 21 c 200 d 2000");
  73         return 0;
  74 }
  75
  76 static int sendPing(void){
  77         UsbCommand ping = {CMD_PING, {1, 2, 3}};
  78         SendCommand(&ping);
  79         SendCommand(&ping);
  80         SendCommand(&ping);
  81         clearCommandBuffer();
  82         UsbCommand resp;
  83         if (WaitForResponseTimeout(CMD_ACK, &resp, 1000))
  84                 return 0;
  85         return 1;
  86 }
  87 static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs){
  88
  89         PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
  90
  91         calcWiegand( fmtlen, fc, cn, bs);
  92
  93         uint64_t arg1 = bytebits_to_byte(bs,32);
  94         uint64_t arg2 = bytebits_to_byte(bs+32,32);
  95         UsbCommand c = {CMD_HID_SIM_TAG, {arg1, arg2, 0}};
  96         clearCommandBuffer();
  97         SendCommand(&c);
  98         msleep(delay);
  99         sendPing();
 100         return TRUE;
 101 }
 102
 103 int CmdHIDDemodFSK(const char *Cmd) {
 104         uint8_t findone = ( Cmd[0] == '1' ) ? 1 : 0;
 105         UsbCommand c = {CMD_HID_DEMOD_FSK, {findone, 0 , 0}};
 106         clearCommandBuffer();
 107         SendCommand(&c);
 108         return 0;
 109 }
 110
 111 int CmdHIDSim(const char *Cmd) {
 112         unsigned int hi = 0, lo = 0;
 113         int n = 0, i = 0;
 114
 115         uint8_t ctmp = param_getchar(Cmd, 0);
 116         if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_sim();
 117
 118         while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 119                 hi = (hi << 4) | (lo >> 28);
 120                 lo = (lo << 4) | (n & 0xf);
 121         }
 122
 123         PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
 124         PrintAndLog("Press pm3-button to abort simulation");
 125
 126         UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
 127         clearCommandBuffer();
 128         SendCommand(&c);
 129         return 0;
 130 }
 131
 132 int CmdHIDClone(const char *Cmd) {
 133
 134         uint32_t hi2 = 0, hi = 0, lo = 0;
 135         int n = 0, i = 0;
 136         UsbCommand c;
 137
 138         uint8_t ctmp = param_getchar(Cmd, 0);
 139         if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_clone();
 140
 141         if (strchr(Cmd,'l') != 0) {
 142                 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 143                         hi2 = (hi2 << 4) | (hi >> 28);
 144                         hi = (hi << 4) | (lo >> 28);
 145                         lo = (lo << 4) | (n & 0xf);
 146                 }
 147
 148                 PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
 149
 150                 c.d.asBytes[0] = 1;
 151         } else {
 152                 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 153                         hi = (hi << 4) | (lo >> 28);
 154                         lo = (lo << 4) | (n & 0xf);
 155                 }
 156
 157                 PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
 158
 159                 hi2 = 0;
 160                 c.d.asBytes[0] = 0;
 161         }
 162
 163         c.cmd = CMD_HID_CLONE_TAG;
 164         c.arg[0] = hi2;
 165         c.arg[1] = hi;
 166         c.arg[2] = lo;
 167
 168         clearCommandBuffer();
 169         SendCommand(&c);
 170         return 0;
 171 }
 172 // struct to handle wiegand
 173 typedef struct {
 174         uint8_t  FormatLen;
 175         uint8_t  SiteCode;
 176         uint8_t  FacilityCode;
 177         uint8_t  CardNumber;
 178         uint8_t* Wiegand;
 179         size_t   Wiegand_n;
 180  } wiegand_t;
 181
 182 static void addHIDMarker(uint8_t fmtlen, uint8_t *out) {
 183         // temp array
 184         uint8_t arr[BITS];
 185         memset(arr, 0, BITS);
 186
 187         // copy inpu
 188         uint8_t pos = sizeof(arr)-fmtlen;
 189         memcpy(arr+pos, out, fmtlen);
 190
 191         switch(fmtlen) {
 192                 case 26:{
 193                         // start sentinel, BITS-bit 27 = 1
 194                         arr[BITS-27] = 1;
 195                         // fmt smaller than 37 used,  bit37 = 1
 196                         arr[BITS-38]  = 1;
 197                         memcpy(out, arr, BITS);
 198                         break;
 199                 }
 200                 case 34:
 201                         // start sentinel, BITS-bit 27 = 1
 202                         arr[BITS-35] = 1;
 203
 204                         // fmt smaller than 37 used,  bit37 = 1
 205                         arr[BITS-38]  = 1;
 206                         memcpy(out, arr, BITS);
 207                         break;
 208                 default:break;
 209         }
 210 }
 211
 212 // static void getParity34(uint32_t *hi, uint32_t *lo){
 213         // uint32_t result = 0;
 214         // int i;
 215
 216         // // even parity
 217         // for (i = 7;i >= 0;i--)
 218                 // result ^= (*hi >> i) & i;
 219         // for (i = 31;i >= 24;i--)
 220                 // result ^= (*lo >> i) & 1;
 221
 222         // *hi |= result << 2;
 223
 224         // // odd parity bit
 225         // result = 0;
 226         // for (i = 23;i >= 1;i--)
 227                 // result ^= (*lo >> i) & 1;
 228
 229         // *lo |= !result;
 230 // }
 231 // static void getParity37H(uint32_t *hi, uint32_t *lo){
 232         // uint32_t result = 0;
 233         // int i;
 234
 235         // // even parity
 236         // for (i = 4;i >= 0;i--)
 237                 // result ^= (*hi >> i) & 1;
 238         // for (i = 31;i >= 20;i--)
 239                 // result ^= (*lo >> i) & 1;
 240         // *hi |= result << 4;
 241
 242         // // odd parity
 243         // result = 0;
 244         // for (i = 19;i >= 1;i--)
 245                 // result ^= (*lo >> i) & 1;
 246         // *lo |= result;
 247 // }
 248
 249 //static void calc26(uint16_t fc, uint32_t cardno,  uint8_t *out){
 250 static void calc26(uint16_t fc, uint32_t cardno, uint8_t *out){
 251         uint8_t wiegand[24];
 252         num_to_bytebits(fc, 8, wiegand);
 253         num_to_bytebits(cardno, 16, wiegand+8);
 254         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 255 }
 256 // static void calc33(uint16_t fc, uint32_t cardno,  uint8_t *out){
 257 // }
 258 static void calc34(uint16_t fc, uint32_t cardno, uint8_t *out){
 259         uint8_t wiegand[32];
 260         num_to_bytebits(fc, 16, wiegand);
 261         num_to_bytebits(cardno, 16, wiegand + 16);
 262         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 263 }
 264 // static void calc35(uint16_t fc, uint32_t cardno,  uint8_t *out){
 265         // *lo = ((cardno & 0xFFFFF) << 1) | fc << 21;
 266         // *hi = (1 << 5) | ((fc >> 11) & 1);
 267 // }
 268 static void calc37S(uint16_t fc, uint32_t cardno, uint8_t *out){
 269         // FC 2 - 17   - 16 bit
 270         // cardno 18 - 36  - 19 bit
 271         // Even P1   1 - 19
 272         // Odd  P37  19 - 36
 273         uint8_t wiegand[35];
 274         num_to_bytebits(fc, 16, wiegand);
 275         num_to_bytebits(cardno, 19, wiegand + 16);
 276         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 277 }
 278 static void calc37H(uint64_t cardno, uint8_t *out){
 279         // SC NONE
 280         // cardno 1-35 34 bits
 281         // Even Parity  0th bit  1-18
 282         // Odd  Parity 36th bit 19-35
 283         uint8_t wiegand[37];
 284         num_to_bytebits( (uint32_t)(cardno >> 32), 2, wiegand);
 285         num_to_bytebits( (uint32_t)(cardno >> 0), 32, wiegand + 2);
 286         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 287
 288         printf("%x %x\n", (uint32_t)(cardno >> 32), (uint32_t)cardno );
 289 }
 290 // static void calc40(uint64_t cardno,  uint8_t *out){
 291         // cardno = (cardno & 0xFFFFFFFFFF);
 292         // *lo = ((cardno & 0xFFFFFFFF) << 1 );
 293         // *hi = (cardno >> 31);
 294 // }
 295
 296 void calcWiegand(uint8_t fmtlen, uint16_t fc, uint64_t cardno, uint8_t *bits){
 297          uint32_t cn32 = (cardno & 0xFFFFFFFF);
 298          switch ( fmtlen ) {
 299                 case 26: calc26(fc, cn32, bits); break;
 300                 // case 33 : calc33(fc, cn32, bits); break;
 301                 case 34: calc34(fc, cn32, bits); break;
 302                 // case 35 : calc35(fc, cn32, bits); break;
 303                 case 37: calc37S(fc, cn32, bits); break;
 304                 case 38: calc37H(cardno, bits); break;
 305                 // case 40 : calc40(cardno, bits);      break;
 306                 // case 44 : { break; }
 307                 // case 84 : { break; }
 308                 default: break;
 309         }
 310 }
 311
 312 int CmdHIDWiegand(const char *Cmd) {
 313         uint32_t oem = 0, fc = 0;
 314         uint64_t cardnum = 0;
 315         uint64_t blocks = 0, wiegand = 0;
 316
 317         uint8_t bits[BITS];
 318         uint8_t *bs = bits;
 319         memset(bs, 0, sizeof(bits));
 320
 321         uint8_t ctmp = param_getchar(Cmd, 0);
 322         if ( strlen(Cmd) == 0 || strlen(Cmd) < 3 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_wiegand();
 323
 324         oem = param_get8(Cmd, 0);
 325         fc = param_get32ex(Cmd, 1, 0, 10);
 326         cardnum = param_get64ex(Cmd, 2, 0, 10);
 327
 328         uint8_t fmtlen[] = {26,33,34,35,37,38,40};
 329
 330         PrintAndLog("HID | OEM | FC   | CN      |  Wiegand  |  HID Formatted");
 331         PrintAndLog("----+-----+------+---------+-----------+--------------------");
 332         for (uint8_t i = 0; i < sizeof(fmtlen); i++){
 333                 memset(bits, 0x00, sizeof(bits));
 334                 calcWiegand( fmtlen[i], fc, cardnum, bs);
 335                 printf("ice:: %s \n", sprint_bin(bs, fmtlen[i]));
 336                 wiegand = (uint64_t)bytebits_to_byte(bs, 32) << 32 | bytebits_to_byte(bs+32, 32);
 337
 338                 addHIDMarker(fmtlen[i], bs);
 339                 printf("ice:: %s\n", sprint_bin(bs, BITS));
 340                 blocks = (uint64_t)bytebits_to_byte(bs+32, 32) << 32 | bytebits_to_byte(bs+64, 32);
 341                 uint8_t shifts = 64-fmtlen[i];
 342                 wiegand >>= shifts;
 343
 344                 PrintAndLog(" %u | %03u | %03u  | %llu  | %llX  |  %llX",
 345                         fmtlen[i],
 346                         oem,
 347                         fc,
 348                         cardnum,
 349                         wiegand,
 350                         blocks
 351                         );
 352         }
 353         PrintAndLog("----+-----+-----+-------+-----------+--------------------");
 354         return 0;
 355 }
 356
 357 int CmdHIDBrute(const char *Cmd){
 358
 359         bool errors = false;
 360         uint32_t fc = 0, cn = 0, delay = 1000;
 361         uint8_t fmtlen = 0;
 362         uint8_t bits[96];
 363         uint8_t *bs = bits;
 364         memset(bs, 0, sizeof(bits));
 365         uint8_t cmdp = 0;
 366
 367         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 368                 switch(param_getchar(Cmd, cmdp)) {
 369                 case 'h':
 370                 case 'H':
 371                         return usage_lf_hid_brute();
 372                 case 'f':
 373                 case 'F':
 374                         fc =  param_get32ex(Cmd ,cmdp+1, 0, 10);
 375                         if ( !fc )
 376                                 errors = true;
 377                         cmdp += 2;
 378                         break;
 379                 case 'd':
 380                 case 'D':
 381                         // delay between attemps,  defaults to 1000ms.
 382                         delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
 383                         cmdp += 2;
 384                         break;
 385                 case 'c':
 386                 case 'C':
 387                         cn = param_get32ex(Cmd, cmdp+1, 0, 10);
 388                         // truncate cardnumber.
 389                         cn &= 0xFFFF;
 390                         cmdp += 2;
 391                         break;
 392                 case 'a':
 393                 case 'A':
 394                         fmtlen = param_get8(Cmd, cmdp+1);
 395                         cmdp += 2;
 396                         bool is_ftm_ok = FALSE;
 397                         uint8_t ftms[] = {26,33,34,35,37};
 398                         for ( uint8_t i = 0; i < sizeof(ftms); i++){
 399                                 if ( ftms[i] == fmtlen ) {
 400                                         is_ftm_ok = TRUE;
 401                                 }
 402                         }
 403                         // negated
 404                         errors = !is_ftm_ok;
 405                         break;
 406                 default:
 407                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 408                         errors = true;
 409                         break;
 410                 }
 411         }
 412         if ( fc == 0 ) errors = true;
 413         if ( errors ) return usage_lf_hid_brute();
 414
 415         PrintAndLog("Brute-forcing HID reader");
 416         PrintAndLog("Press pm3-button to abort simulation or run another command");
 417
 418         uint16_t up = cn;
 419         uint16_t down = cn;
 420
 421         for (;;){
 422
 423                 if ( offline ) {
 424                         printf("Device offline\n");
 425                         return  2;
 426                 }
 427
 428                 if (ukbhit()) {
 429                         PrintAndLog("aborted via keyboard!");
 430                         return sendPing();
 431                 }
 432
 433                 // Do one up
 434                 if ( up < 0xFFFF )
 435                         if ( !sendTry(fmtlen, fc, up++, delay, bs)) return 1;
 436
 437                 // Do one down  (if cardnumber is given)
 438                 if ( cn > 1 )
 439                         if ( down > 1 )
 440                                 if ( !sendTry(fmtlen, fc, --down, delay, bs)) return 1;
 441         }
 442         return 0;
 443 }
 444
 445 static command_t CommandTable[] = {
 446         {"help",    CmdHelp,        1, "This help"},
 447         {"fskdemod",CmdHIDDemodFSK, 0, "Realtime HID FSK demodulator"},
 448         {"sim",     CmdHIDSim,      0, "HID tag simulator"},
 449         {"clone",   CmdHIDClone,    0, "Clone HID to T55x7"},
 450         {"wiegand", CmdHIDWiegand,  1, "Convert facility code/card number to Wiegand code"},
 451         {"brute",   CmdHIDBrute,        0, "Bruteforce card number against reader"},
 452         {NULL, NULL, 0, NULL}
 453 };
 454
 455 int CmdLFHID(const char *Cmd) {
 456         clearCommandBuffer();
 457         CmdsParse(CommandTable, Cmd);
 458         return 0;
 459 }
 460
 461 int CmdHelp(const char *Cmd) {
 462         CmdsHelp(CommandTable);
 463         return 0;
 464 }