git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfawid.c

   1 //-----------------------------------------------------------------------------
   2 // Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
   3 //
   4 // cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   5 //
   6 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   7 // at your option, any later version. See the LICENSE.txt file for the text of
   8 // the license.
   9 //-----------------------------------------------------------------------------
  10 // Low frequency AWID26/50 commands
  11 //-----------------------------------------------------------------------------
  12 #include "cmdlfawid.h"  // AWID function declarations
  13
  14 static int CmdHelp(const char *Cmd);
  15
  16 int usage_lf_awid_fskdemod(void) {
  17         PrintAndLog("Enables AWID compatible reader mode printing details of scanned AWID26 or AWID50 tags.");
  18         PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
  19         PrintAndLog("If the [1] option is provided, reader mode is exited after reading a single AWID card.");
  20         PrintAndLog("");
  21         PrintAndLog("Usage:  lf awid fskdemod [h] [1]");
  22         PrintAndLog("Options:");
  23         PrintAndLog("      h :  This help");
  24         PrintAndLog("      1 : (optional) stop after reading a single card");
  25         PrintAndLog("");
  26         PrintAndLog("Samples:");
  27         PrintAndLog("       lf awid fskdemod");
  28         PrintAndLog("       lf awid fskdemod 1");
  29         return 0;
  30 }
  31
  32 int usage_lf_awid_sim(void) {
  33         PrintAndLog("Enables simulation of AWID card with specified facility-code and card number.");
  34         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  35         PrintAndLog("");
  36         PrintAndLog("Usage:  lf awid sim [h] <format> <facility-code> <card-number>");
  37         PrintAndLog("Options:");
  38         PrintAndLog("                h :  This help");
  39         PrintAndLog("         <format> :  format length 26|50");
  40         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  41         PrintAndLog("    <card number> :  16|32-bit value card number");
  42         PrintAndLog("");
  43         PrintAndLog("Samples:");
  44         PrintAndLog("       lf awid sim 26 224 1337");
  45         PrintAndLog("       lf awid sim 50 2001 13371337");
  46         return 0;
  47 }
  48
  49 int usage_lf_awid_clone(void) {
  50         PrintAndLog("Enables cloning of AWID card with specified facility-code and card number onto T55x7.");
  51         PrintAndLog("The T55x7 must be on the antenna when issuing this command.  T55x7 blocks are calculated and printed in the process.");
  52         PrintAndLog("");
  53         PrintAndLog("Usage:  lf awid clone [h] <format> <facility-code> <card-number> [Q5]");
  54         PrintAndLog("Options:");
  55         PrintAndLog("                h :  This help");
  56         PrintAndLog("         <format> :  format length 26|50");
  57         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  58         PrintAndLog("    <card number> :  16|32-bit value card number");
  59         PrintAndLog("               Q5 :  optional - clone to Q5 (T5555) instead of T55x7 chip");
  60         PrintAndLog("");
  61         PrintAndLog("Samples:");
  62         PrintAndLog("       lf awid clone 26 224 1337");
  63         PrintAndLog("       lf awid clone 50 2001 13371337");
  64         return 0;
  65 }
  66
  67 int usage_lf_awid_brute(void){
  68         PrintAndLog("Enables bruteforce of AWID reader with specified facility-code.");
  69         PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
  70         PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
  71         PrintAndLog("");
  72         PrintAndLog("Usage:  lf awid brute [h] a <format> f <facility-code> c <cardnumber> d <delay>");
  73         PrintAndLog("Options:");
  74         PrintAndLog("       h                 :  This help");
  75         PrintAndLog("       a <format>        :  format length 26|50");
  76         PrintAndLog("       f <facility-code> :  8|16bit value facility code");
  77         PrintAndLog("       c <cardnumber>    :  (optional) cardnumber to start with, max 65535");
  78         PrintAndLog("       d <delay>         :  delay betweens attempts in ms. Default 1000ms");
  79         PrintAndLog("");
  80         PrintAndLog("Samples:");
  81         PrintAndLog("       lf awid brute a 26 f 224");
  82         PrintAndLog("       lf awid brute a 50 f 2001 d 2000");
  83         PrintAndLog("       lf awid brute a 50 f 2001 c 200 d 2000");
  84         return 0;
  85 }
  86
  87 static int sendPing(void){
  88         UsbCommand ping = {CMD_PING, {1, 2, 3}};
  89         SendCommand(&ping);
  90         SendCommand(&ping);
  91         SendCommand(&ping);
  92
  93         clearCommandBuffer();
  94         UsbCommand resp;
  95         if (WaitForResponseTimeout(CMD_ACK, &resp, 1000)) {
  96                 return 0;
  97         }
  98         return 1;
  99 }
 100
 101 static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs, size_t bs_len){
 102
 103         PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 104         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 105                 PrintAndLog("Error with tag bitstream generation.");
 106                 return FALSE;
 107         }
 108
 109         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 110         uint64_t arg2 = 50;              // clk RF/50 invert=0
 111         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, bs_len}};
 112         memcpy(c.d.asBytes, bs, bs_len);
 113         clearCommandBuffer();
 114         SendCommand(&c);
 115
 116         msleep(delay);
 117         sendPing();
 118         return TRUE;
 119 }
 120
 121
 122 int CmdAWIDDemodFSK(const char *Cmd) {
 123         int findone = 0;
 124         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
 125         if (Cmd[0] == '1') findone = 1;
 126
 127         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
 128         clearCommandBuffer();
 129         SendCommand(&c);
 130         return 0;
 131 }
 132
 133 //refactored by marshmellow
 134 int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
 135
 136         // the return bits, preamble 0000 0001
 137         bits[7] = 1;
 138
 139         uint8_t pre[66];
 140         memset(pre, 0, sizeof(pre));
 141
 142         // add formatlength
 143         num_to_bytebits(fmtlen, 8, pre);
 144
 145         // add facilitycode, cardnumber and wiegand parity bits
 146         if ( fmtlen == 26 ) {
 147                 uint8_t wiegand[24];
 148                 num_to_bytebits(fc, 8, wiegand);
 149                 num_to_bytebits(cn, 16, wiegand+8);
 150                 wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 151         } else {
 152                 uint8_t wiegand[48];
 153                 num_to_bytebits(fc, 16, wiegand);
 154                 num_to_bytebits(cn, 32, wiegand+16);
 155                 wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
 156         }
 157
 158         // add AWID 4bit parity
 159         size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
 160
 161         if (bitLen != 88) return 0;
 162         return 1;
 163 }
 164
 165 int CmdAWIDSim(const char *Cmd) {
 166         uint32_t fc = 0, cn = 0;
 167         uint8_t fmtlen = 0;
 168         uint8_t bits[96];
 169         uint8_t *bs = bits;
 170         size_t size = sizeof(bits);
 171         memset(bs, 0x00, size);
 172
 173         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 174         uint64_t arg2 = 50; // clk RF/50 invert=0
 175
 176         char cmdp = param_getchar(Cmd, 0);
 177         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
 178
 179         fmtlen = param_get8(Cmd, 0);
 180         fc = param_get32ex(Cmd, 1, 0, 10);
 181         cn = param_get32ex(Cmd, 2, 0, 10);
 182         if ( !fc || !cn) return usage_lf_awid_sim();
 183
 184         switch(fmtlen) {
 185                 case 26:
 186                         if ((fc & 0xFF) != fc) {
 187                                 fc &= 0xFF;
 188                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 189                         }
 190
 191                         if ((cn & 0xFFFF) != cn) {
 192                                 cn &= 0xFFFF;
 193                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 194                         }
 195                         break;
 196                 case 50:
 197                         if ((fc & 0xFFFF) != fc) {
 198                                 fc &= 0xFFFF;
 199                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 200                         }
 201                         break;
 202                 default: break;
 203         }
 204
 205         PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
 206         PrintAndLog("Press pm3-button to abort simulation or run another command");
 207
 208         if (!getAWIDBits(fmtlen, fc, cn, bs)) {
 209                 PrintAndLog("Error with tag bitstream generation.");
 210                 return 1;
 211         }
 212         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 213         // arg1 --- fcHigh<<8 + fcLow
 214         // arg2 --- Inversion and clk setting
 215         // 96   --- Bitstream length: 96-bits == 12 bytes
 216         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 217         memcpy(c.d.asBytes, bs, size);
 218         clearCommandBuffer();
 219         SendCommand(&c);
 220         return 0;
 221 }
 222
 223 int CmdAWIDClone(const char *Cmd) {
 224         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 225         uint32_t fc = 0, cn = 0;
 226         uint8_t fmtlen = 0;
 227         uint8_t bits[96];
 228         uint8_t *bs=bits;
 229         memset(bs,0,sizeof(bits));
 230
 231         char cmdp = param_getchar(Cmd, 0);
 232         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
 233
 234         fmtlen = param_get8(Cmd, 0);
 235         fc = param_get32ex(Cmd, 1, 0, 10);
 236         cn = param_get32ex(Cmd, 2, 0, 10);
 237
 238         if ( !fc || !cn) return usage_lf_awid_clone();
 239
 240         switch(fmtlen) {
 241                 case 50:
 242                         if ((fc & 0xFFFF) != fc) {
 243                                 fc &= 0xFFFF;
 244                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 245                         }
 246                         break;
 247                 default:
 248                         fmtlen = 26;
 249                         if ((fc & 0xFF) != fc) {
 250                                 fc &= 0xFF;
 251                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 252                         }
 253
 254                         if ((cn & 0xFFFF) != cn) {
 255                                 cn &= 0xFFFF;
 256                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 257                         }
 258                         break;
 259         }
 260
 261         if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q')
 262                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 263                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 264
 265         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 266                 PrintAndLog("Error with tag bitstream generation.");
 267                 return 1;
 268         }
 269
 270         blocks[1] = bytebits_to_byte(bs,32);
 271         blocks[2] = bytebits_to_byte(bs+32,32);
 272         blocks[3] = bytebits_to_byte(bs+64,32);
 273
 274         PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
 275         PrintAndLog("Blk | Data ");
 276         PrintAndLog("----+------------");
 277         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 278         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 279         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 280         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 281
 282         UsbCommand resp;
 283         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 284
 285         for (uint8_t i=0; i<4; i++) {
 286                 c.arg[0] = blocks[i];
 287                 c.arg[1] = i;
 288                 clearCommandBuffer();
 289                 SendCommand(&c);
 290                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)){
 291                         PrintAndLog("Error occurred, device did not respond during write operation.");
 292                         return -1;
 293                 }
 294         }
 295         return 0;
 296 }
 297
 298 int CmdAWIDBrute(const char *Cmd){
 299
 300         bool errors = false;
 301         uint32_t fc = 0, cn = 0, delay = 1000;
 302         uint8_t fmtlen = 0;
 303         uint8_t bits[96];
 304         uint8_t *bs = bits;
 305         size_t size = sizeof(bits);
 306         memset(bs, 0x00, size);
 307         uint8_t cmdp = 0;
 308
 309         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 310                 switch(param_getchar(Cmd, cmdp)) {
 311                 case 'h':
 312                 case 'H':
 313                         return usage_lf_awid_brute();
 314                 case 'f':
 315                 case 'F':
 316                         fc =  param_get32ex(Cmd ,cmdp+1, 0, 10);
 317                         if ( !fc )
 318                                 errors = true;
 319                         cmdp += 2;
 320                         break;
 321                 case 'd':
 322                 case 'D':
 323                         // delay between attemps,  defaults to 1000ms.
 324                         delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
 325                         cmdp += 2;
 326                         break;
 327                 case 'c':
 328                 case 'C':
 329                         cn = param_get32ex(Cmd, cmdp+1, 0, 10);
 330                         // truncate cardnumber.
 331                         cn &= 0xFFFF;
 332                         cmdp += 2;
 333                         break;
 334                 case 'a':
 335                 case 'A':
 336                         fmtlen = param_get8(Cmd, cmdp+1);
 337                         cmdp += 2;
 338                         break;
 339                 default:
 340                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 341                         errors = true;
 342                         break;
 343                 }
 344         }
 345         if ( fc == 0 )errors = true;
 346         if ( errors ) return usage_lf_awid_brute();
 347
 348         // limit fc according to selected format
 349         switch(fmtlen) {
 350                 case 50:
 351                         if ((fc & 0xFFFF) != fc) {
 352                                 fc &= 0xFFFF;
 353                                 PrintAndLog("Facility-code truncated to 16-bits (AWID50): %u", fc);
 354                         }
 355                         break;
 356                 default:
 357                         if ((fc & 0xFF) != fc) {
 358                                 fc &= 0xFF;
 359                                 PrintAndLog("Facility-code truncated to 8-bits (AWID26): %u", fc);
 360                         }
 361                         break;
 362         }
 363
 364         // start
 365
 366         PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
 367         PrintAndLog("Press pm3-button to abort simulation or press key");
 368
 369         uint16_t up = cn;
 370         uint16_t down = cn;
 371
 372         for (;;){
 373
 374                 if ( offline ) {
 375                         printf("Device offline\n");
 376                         return  2;
 377                 }
 378
 379                 if (ukbhit()) return sendPing();
 380
 381                 // Do one up
 382                 if ( up < 0xFFFF )
 383                         if ( !sendTry(fmtlen, fc, up++, delay, bs, size)) return 1;
 384
 385                 // Do one down  (if cardnumber is given)
 386                 if ( cn > 1 )
 387                         if ( down > 1 )
 388                                 if ( !sendTry(fmtlen, fc, --down, delay, bs, size)) return 1;
 389         }
 390         return 0;
 391 }
 392
 393 static command_t CommandTable[] = {
 394         {"help",      CmdHelp,         1, "This help"},
 395         {"fskdemod",  CmdAWIDDemodFSK, 0, "Realtime AWID FSK demodulator"},
 396         {"sim",       CmdAWIDSim,      0, "AWID tag simulator"},
 397         {"clone",     CmdAWIDClone,    0, "Clone AWID to T55x7"},
 398         {"brute",         CmdAWIDBrute,    0, "Bruteforce card number against reader"},
 399         {NULL, NULL, 0, NULL}
 400 };
 401
 402 int CmdLFAWID(const char *Cmd) {
 403         clearCommandBuffer();
 404         CmdsParse(CommandTable, Cmd);
 405         return 0;
 406 }
 407
 408 int CmdHelp(const char *Cmd) {
 409         CmdsHelp(CommandTable);
 410         return 0;
 411 }