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