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 commands
  11 //-----------------------------------------------------------------------------
  12
  13 #include <stdio.h>      // sscanf
  14 #include "proxmark3.h"  // Definitions, USB controls, etc
  15 #include "ui.h"         // PrintAndLog
  16 #include "cmdparser.h"  // CmdsParse, CmdsHelp
  17 #include "cmdlfawid.h"  // AWID function declarations
  18 #include "lfdemod.h"    // parityTest
  19 #include "util.h"       // weigandparity
  20 #include "protocols.h"  // for T55xx config register definitions
  21 #include "cmdmain.h"
  22 #include "sleep.h"
  23
  24 static int CmdHelp(const char *Cmd);
  25
  26 int usage_lf_awid_fskdemod(void) {
  27         PrintAndLog("Enables AWID compatible reader mode printing details of scanned AWID26 or AWID50 tags.");
  28         PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
  29         PrintAndLog("If the [1] option is provided, reader mode is exited after reading a single AWID card.");
  30         PrintAndLog("");
  31         PrintAndLog("Usage:  lf awid fskdemod [h] [1]");
  32         PrintAndLog("Options:");
  33         PrintAndLog("      h :  This help");
  34         PrintAndLog("      1 : (optional) stop after reading a single card");
  35         PrintAndLog("");
  36         PrintAndLog("Samples:");
  37         PrintAndLog("       lf awid fskdemod");
  38         PrintAndLog("       lf awid fskdemod 1");
  39         return 0;
  40 }
  41
  42 int usage_lf_awid_sim(void) {
  43         PrintAndLog("Enables simulation of AWID card with specified facility-code and card number.");
  44         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  45         PrintAndLog("");
  46         PrintAndLog("Usage:  lf awid sim [h] <format> <facility-code> <card-number>");
  47         PrintAndLog("Options:");
  48         PrintAndLog("                h :  This help");
  49         PrintAndLog("         <format> :  format length 26|50");
  50         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  51         PrintAndLog("    <card number> :  16|32-bit value card number");
  52         PrintAndLog("");
  53         PrintAndLog("Samples:");
  54         PrintAndLog("       lf awid sim 26 224 1337");
  55         PrintAndLog("       lf awid sim 50 2001 13371337");
  56         return 0;
  57 }
  58
  59 int usage_lf_awid_clone(void) {
  60         PrintAndLog("Enables cloning of AWID card with specified facility-code and card number onto T55x7.");
  61         PrintAndLog("The T55x7 must be on the antenna when issuing this command.  T55x7 blocks are calculated and printed in the process.");
  62         PrintAndLog("");
  63         PrintAndLog("Usage:  lf awid clone [h] <format> <facility-code> <card-number> [Q5]");
  64         PrintAndLog("Options:");
  65         PrintAndLog("                h :  This help");
  66         PrintAndLog("         <format> :  format length 26|50");
  67         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  68         PrintAndLog("    <card number> :  16|32-bit value card number");
  69         PrintAndLog("               Q5 :  optional - clone to Q5 (T5555) instead of T55x7 chip");
  70         PrintAndLog("");
  71         PrintAndLog("Samples:");
  72         PrintAndLog("       lf awid clone 26 224 1337");
  73         PrintAndLog("       lf awid clone 50 2001 13371337");
  74         return 0;
  75 }
  76
  77 int usage_lf_awid_brute(void){
  78         PrintAndLog("Enables bruteforce of AWID reader with specified facility-code.");
  79         PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
  80         PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
  81         PrintAndLog("");
  82         PrintAndLog("Usage:  lf awid brute [h] a <format> f <facility-code> c <cardnumber> d <delay>");
  83         PrintAndLog("Options:");
  84         PrintAndLog("       h                 :  This help");
  85         PrintAndLog("       a <format>        :  format length 26|50");
  86         PrintAndLog("       f <facility-code> :  8|16bit value facility code");
  87         PrintAndLog("       c <cardnumber>    :  (optional) cardnumber to start with, max 65535");
  88         PrintAndLog("       d <delay>         :  delay betweens attempts in ms. Default 1000ms");
  89         PrintAndLog("");
  90         PrintAndLog("Samples:");
  91         PrintAndLog("       lf awid brute a 26 f 224");
  92         PrintAndLog("       lf awid brute a 50 f 2001 d 2000");
  93         PrintAndLog("       lf awid brute a 50 f 2001 c 200 d 2000");
  94         return 0;
  95 }
  96
  97 static boolean sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs, size_t bs_len){
  98
  99         PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 100         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 101                 PrintAndLog("Error with tag bitstream generation.");
 102                 return FALSE;
 103         }
 104
 105         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 106         uint64_t arg2 = 50;              // clk RF/50 invert=0
 107         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, bs_len}};
 108         memcpy(c.d.asBytes, bs, bs_len);
 109         clearCommandBuffer();
 110         SendCommand(&c);
 111         msleep(delay);
 112         return TRUE;
 113 }
 114 static int sendPing(){
 115         UsbCommand resp;
 116         UsbCommand ping = {CMD_PING};
 117         clearCommandBuffer();
 118         SendCommand(&ping);
 119         if (WaitForResponseTimeout(CMD_ACK, &resp, 1000)) {
 120                 PrintAndLog("aborted via keyboard!");
 121                 return 0;
 122         }
 123         PrintAndLog("Device didnt respond to ABORT");
 124         return 1;
 125 }
 126
 127 int CmdAWIDDemodFSK(const char *Cmd) {
 128         int findone = 0;
 129         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
 130         if (Cmd[0] == '1') findone = 1;
 131
 132         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
 133         clearCommandBuffer();
 134         SendCommand(&c);
 135         return 0;
 136 }
 137
 138 //refactored by marshmellow
 139 int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
 140
 141         // the return bits, preamble 0000 0001
 142         bits[7] = 1;
 143
 144         uint8_t pre[66];
 145         memset(pre, 0, sizeof(pre));
 146
 147         // add formatlength
 148         num_to_bytebits(fmtlen, 8, pre);
 149
 150         // add facilitycode, cardnumber and wiegand parity bits
 151         if ( fmtlen == 26 ) {
 152                 uint8_t wiegand[24];
 153                 num_to_bytebits(fc, 8, wiegand);
 154                 num_to_bytebits(cn, 16, wiegand+8);
 155                 wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 156         } else {
 157                 uint8_t wiegand[48];
 158                 num_to_bytebits(fc, 16, wiegand);
 159                 num_to_bytebits(cn, 32, wiegand+16);
 160                 wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
 161         }
 162
 163         // add AWID 4bit parity
 164         size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
 165
 166         if (bitLen != 88) return 0;
 167         return 1;
 168 }
 169
 170 int CmdAWIDSim(const char *Cmd) {
 171         uint32_t fc = 0, cn = 0;
 172         uint8_t fmtlen = 0;
 173         uint8_t bits[96];
 174         uint8_t *bs = bits;
 175         size_t size = sizeof(bits);
 176         memset(bs, 0x00, size);
 177
 178         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 179         uint64_t arg2 = 50; // clk RF/50 invert=0
 180
 181         char cmdp = param_getchar(Cmd, 0);
 182         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
 183
 184         fmtlen = param_get8(Cmd, 0);
 185         fc = param_get32ex(Cmd, 1, 0, 10);
 186         cn = param_get32ex(Cmd, 2, 0, 10);
 187         if ( !fc || !cn) return usage_lf_awid_sim();
 188
 189         switch(fmtlen) {
 190                 case 26:
 191                         if ((fc & 0xFF) != fc) {
 192                                 fc &= 0xFF;
 193                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 194                         }
 195
 196                         if ((cn & 0xFFFF) != cn) {
 197                                 cn &= 0xFFFF;
 198                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 199                         }
 200                         break;
 201                 case 50:
 202                         if ((fc & 0xFFFF) != fc) {
 203                                 fc &= 0xFFFF;
 204                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 205                         }
 206                         break;
 207                 default: break;
 208         }
 209
 210         PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
 211         PrintAndLog("Press pm3-button to abort simulation or run another command");
 212
 213         if (!getAWIDBits(fmtlen, fc, cn, bs)) {
 214                 PrintAndLog("Error with tag bitstream generation.");
 215                 return 1;
 216         }
 217         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 218         // arg1 --- fcHigh<<8 + fcLow
 219         // arg2 --- Inversion and clk setting
 220         // 96   --- Bitstream length: 96-bits == 12 bytes
 221         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 222         memcpy(c.d.asBytes, bs, size);
 223         clearCommandBuffer();
 224         SendCommand(&c);
 225         return 0;
 226 }
 227
 228 int CmdAWIDClone(const char *Cmd) {
 229         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 230         uint32_t fc = 0, cn = 0;
 231         uint8_t fmtlen = 0;
 232         uint8_t bits[96];
 233         uint8_t *bs=bits;
 234         memset(bs,0,sizeof(bits));
 235
 236         char cmdp = param_getchar(Cmd, 0);
 237         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
 238
 239         fmtlen = param_get8(Cmd, 0);
 240         fc = param_get32ex(Cmd, 1, 0, 10);
 241         cn = param_get32ex(Cmd, 2, 0, 10);
 242
 243         if ( !fc || !cn) return usage_lf_awid_clone();
 244
 245         switch(fmtlen) {
 246                 case 50:
 247                         if ((fc & 0xFFFF) != fc) {
 248                                 fc &= 0xFFFF;
 249                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 250                         }
 251                         break;
 252                 default:
 253                         fmtlen = 26;
 254                         if ((fc & 0xFF) != fc) {
 255                                 fc &= 0xFF;
 256                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 257                         }
 258
 259                         if ((cn & 0xFFFF) != cn) {
 260                                 cn &= 0xFFFF;
 261                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 262                         }
 263                         break;
 264         }
 265
 266         if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q')
 267                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 268                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 269
 270         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 271                 PrintAndLog("Error with tag bitstream generation.");
 272                 return 1;
 273         }
 274
 275         blocks[1] = bytebits_to_byte(bs,32);
 276         blocks[2] = bytebits_to_byte(bs+32,32);
 277         blocks[3] = bytebits_to_byte(bs+64,32);
 278
 279         PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
 280         PrintAndLog("Blk | Data ");
 281         PrintAndLog("----+------------");
 282         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 283         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 284         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 285         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 286
 287         UsbCommand resp;
 288         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 289
 290         for (uint8_t i=0; i<4; i++) {
 291                 c.arg[0] = blocks[i];
 292                 c.arg[1] = i;
 293                 clearCommandBuffer();
 294                 SendCommand(&c);
 295                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)){
 296                         PrintAndLog("Error occurred, device did not respond during write operation.");
 297                         return -1;
 298                 }
 299         }
 300         return 0;
 301 }
 302
 303 int CmdAWIDBrute(const char *Cmd){
 304
 305         bool errors = false;
 306         uint32_t fc = 0, cn = 0, delay = 1000;
 307         uint8_t fmtlen = 0;
 308         uint8_t bits[96];
 309         uint8_t *bs = bits;
 310         size_t size = sizeof(bits);
 311         memset(bs, 0x00, size);
 312         uint8_t cmdp = 0;
 313
 314         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 315                 switch(param_getchar(Cmd, cmdp)) {
 316                 case 'h':
 317                 case 'H':
 318                         return usage_lf_awid_brute();
 319                 case 'f':
 320                 case 'F':
 321                         fc =  param_get32ex(Cmd ,cmdp+1, 0, 10);
 322                         if ( !fc )
 323                                 errors = true;
 324                         cmdp += 2;
 325                         break;
 326                 case 'd':
 327                 case 'D':
 328                         // delay between attemps,  defaults to 1000ms.
 329                         delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
 330                         cmdp += 2;
 331                         break;
 332                 case 'c':
 333                 case 'C':
 334                         cn = param_get32ex(Cmd, cmdp+1, 0, 10);
 335                         // truncate cardnumber.
 336                         cn &= 0xFFFF;
 337                         cmdp += 2;
 338                         break;
 339                 case 'a':
 340                 case 'A':
 341                         fmtlen = param_get8(Cmd, cmdp+1);
 342                         cmdp += 2;
 343                         break;
 344                 default:
 345                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 346                         errors = true;
 347                         break;
 348                 }
 349         }
 350         if ( fc == 0 )errors = true;
 351         if ( errors ) return usage_lf_awid_brute();
 352
 353         // limit fc according to selected format
 354         switch(fmtlen) {
 355                 case 50:
 356                         if ((fc & 0xFFFF) != fc) {
 357                                 fc &= 0xFFFF;
 358                                 PrintAndLog("Facility-code truncated to 16-bits (AWID50): %u", fc);
 359                         }
 360                         break;
 361                 default:
 362                         if ((fc & 0xFF) != fc) {
 363                                 fc &= 0xFF;
 364                                 PrintAndLog("Facility-code truncated to 8-bits (AWID26): %u", fc);
 365                         }
 366                         break;
 367         }
 368
 369         // start
 370
 371         PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
 372         PrintAndLog("Press pm3-button to abort simulation or press key");
 373
 374         uint16_t up = cn;
 375         uint16_t down = cn;
 376
 377         for (;;){
 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 > 0 )
 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 }