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 [1]");
  32         PrintAndLog("Options :");
  33         PrintAndLog("      1 : (optional) stop after reading a single card");
  34         PrintAndLog("");
  35         PrintAndLog("Samples");
  36         PrintAndLog("        lf awid fskdemod");
  37         PrintAndLog("        lf awid fskdemod 1");
  38         return 0;
  39 }
  40
  41 int usage_lf_awid_sim(void) {
  42         PrintAndLog("Enables simulation of AWID card with specified facility-code and card number.");
  43         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  44         PrintAndLog("");
  45         PrintAndLog("Usage:  lf awid sim <format> <facility-code> <card-number>");
  46         PrintAndLog("Options :");
  47         PrintAndLog("  <format>        :  format length 26|50");
  48         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  49         PrintAndLog("  <card number>   :  16|32-bit value card number");
  50         PrintAndLog("");
  51         PrintAndLog("Samples");
  52         PrintAndLog("       lf awid sim 26 224 1337");
  53         PrintAndLog("       lf awid sim 50 2001 13371337");
  54         return 0;
  55 }
  56
  57 int usage_lf_awid_clone(void) {
  58         PrintAndLog("Enables cloning of AWID card with specified facility-code and card number onto T55x7.");
  59         PrintAndLog("The T55x7 must be on the antenna when issuing this command.  T55x7 blocks are calculated and printed in the process.");
  60         PrintAndLog("");
  61         PrintAndLog("Usage:  lf awid clone <format> <facility-code> <card-number>");
  62         PrintAndLog("Options :");
  63         PrintAndLog("  <format>        :  format length 26|50");
  64         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  65         PrintAndLog("  <card number>   :  16|32-bit value card number");
  66         PrintAndLog("  Q5              :  optional - clone to Q5 (T5555) instead of T55x7 chip");
  67         PrintAndLog("");
  68         PrintAndLog("Samples");
  69         PrintAndLog("       lf awid clone 26 224 1337");
  70         PrintAndLog("       lf awid clone 50 2001 13371337");
  71         return 0;
  72 }
  73
  74 int usage_lf_awid_brute(void){
  75         PrintAndLog("Enables bruteforce of AWID reader with specified facility-code.");
  76         PrintAndLog("This is a incremental attack against reader.");
  77         PrintAndLog("");
  78         PrintAndLog("Usage:  lf awid brute <format> <facility-code>");
  79         PrintAndLog("Options :");
  80         PrintAndLog("  <format>        :  format length 26|50");
  81         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  82         PrintAndLog("");
  83         PrintAndLog("Samples");
  84         PrintAndLog("       lf awid brute 26 224");
  85         PrintAndLog("       lf awid brute 50 2001");
  86         return 0;
  87 }
  88
  89 int CmdAWIDDemodFSK(const char *Cmd) {
  90         int findone = 0;
  91         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
  92         if (Cmd[0] == '1') findone = 1;
  93
  94         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
  95         clearCommandBuffer();
  96         SendCommand(&c);
  97         return 0;
  98 }
  99
 100 //refactored by marshmellow
 101 int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
 102
 103         // the return bits, preamble 0000 0001
 104         bits[7] = 1;
 105
 106         uint8_t pre[66];
 107         memset(pre, 0, sizeof(pre));
 108
 109         // add formatlength
 110         num_to_bytebits(fmtlen, 8, pre);
 111
 112         // add facilitycode, cardnumber and wiegand parity bits
 113         if ( fmtlen == 26 ) {
 114                 uint8_t wiegand[24];
 115                 num_to_bytebits(fc, 8, wiegand);
 116                 num_to_bytebits(cn, 16, wiegand+8);
 117                 wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 118         } else {
 119                 uint8_t wiegand[48];
 120                 num_to_bytebits(fc, 16, wiegand);
 121                 num_to_bytebits(cn, 32, wiegand+16);
 122                 wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
 123         }
 124
 125         // add AWID 4bit parity
 126         size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
 127
 128         if (bitLen != 88) return 0;
 129         return 1;
 130 }
 131
 132 int CmdAWIDSim(const char *Cmd) {
 133         uint32_t fc = 0, cn = 0;
 134         uint8_t fmtlen = 0;
 135         uint8_t bits[96];
 136         uint8_t *bs = bits;
 137         size_t size = sizeof(bits);
 138         memset(bs, 0x00, size);
 139
 140         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 141         uint64_t arg2 = 50; // clk RF/50 invert=0
 142
 143         char cmdp = param_getchar(Cmd, 0);
 144         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
 145
 146         fmtlen = param_get8(Cmd, 0);
 147         fc = param_get32ex(Cmd, 1, 0, 10);
 148         cn = param_get32ex(Cmd, 2, 0, 10);
 149         if ( !fc || !cn) return usage_lf_awid_sim();
 150
 151         switch(fmtlen) {
 152                 case 26:
 153                         if ((fc & 0xFF) != fc) {
 154                                 fc &= 0xFF;
 155                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 156                         }
 157
 158                         if ((cn & 0xFFFF) != cn) {
 159                                 cn &= 0xFFFF;
 160                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 161                         }
 162                         break;
 163                 case 50:
 164                         if ((fc & 0xFFFF) != fc) {
 165                                 fc &= 0xFFFF;
 166                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 167                         }
 168                         break;
 169                 default: break;
 170         }
 171
 172         PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
 173         PrintAndLog("Press pm3-button to abort simulation or run another command");
 174
 175         if (!getAWIDBits(fmtlen, fc, cn, bs)) {
 176                 PrintAndLog("Error with tag bitstream generation.");
 177                 return 1;
 178         }
 179         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 180         // arg1 --- fcHigh<<8 + fcLow
 181         // arg2 --- Inversion and clk setting
 182         // 96   --- Bitstream length: 96-bits == 12 bytes
 183         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 184         memcpy(c.d.asBytes, bs, size);
 185         clearCommandBuffer();
 186         SendCommand(&c);
 187         return 0;
 188 }
 189
 190 int CmdAWIDClone(const char *Cmd) {
 191         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 192         uint32_t fc = 0, cn = 0;
 193         uint8_t fmtlen = 0;
 194         uint8_t bits[96];
 195         uint8_t *bs=bits;
 196         memset(bs,0,sizeof(bits));
 197
 198         char cmdp = param_getchar(Cmd, 0);
 199         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
 200
 201         fmtlen = param_get8(Cmd, 0);
 202         fc = param_get32ex(Cmd, 1, 0, 10);
 203         cn = param_get32ex(Cmd, 2, 0, 10);
 204
 205         if ( !fc || !cn) return usage_lf_awid_clone();
 206
 207         switch(fmtlen) {
 208                 case 50:
 209                         if ((fc & 0xFFFF) != fc) {
 210                                 fc &= 0xFFFF;
 211                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 212                         }
 213                         break;
 214                 default:
 215                         fmtlen = 26;
 216                         if ((fc & 0xFF) != fc) {
 217                                 fc &= 0xFF;
 218                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 219                         }
 220
 221                         if ((cn & 0xFFFF) != cn) {
 222                                 cn &= 0xFFFF;
 223                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 224                         }
 225                         break;
 226         }
 227
 228         if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q')
 229                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 230
 231         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 232                 PrintAndLog("Error with tag bitstream generation.");
 233                 return 1;
 234         }
 235
 236         blocks[1] = bytebits_to_byte(bs,32);
 237         blocks[2] = bytebits_to_byte(bs+32,32);
 238         blocks[3] = bytebits_to_byte(bs+64,32);
 239
 240         PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
 241         PrintAndLog("Blk | Data ");
 242         PrintAndLog("----+------------");
 243         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 244         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 245         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 246         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 247
 248         UsbCommand resp;
 249         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 250
 251         for (uint8_t i=0; i<4; i++) {
 252                 c.arg[0] = blocks[i];
 253                 c.arg[1] = i;
 254                 clearCommandBuffer();
 255                 SendCommand(&c);
 256                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 257                         PrintAndLog("Error occurred, device did not respond during write operation.");
 258                         return -1;
 259                 }
 260         }
 261         return 0;
 262 }
 263
 264 int CmdAWIDBrute(const char *Cmd){
 265
 266         uint32_t fc = 0x00;
 267         uint8_t fmtlen = 0;
 268         uint8_t bits[96];
 269         uint8_t *bs = bits;
 270         size_t size = sizeof(bits);
 271         memset(bs, 0x00, size);
 272
 273         char cmdp = param_getchar(Cmd, 0);
 274         if (strlen(Cmd) > 4 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute();
 275
 276         fmtlen = param_get8(Cmd, 0);
 277         fc =  param_get32ex(Cmd, 1, 0, 10);
 278         if ( !fc ) return usage_lf_awid_brute();
 279
 280         switch(fmtlen) {
 281                 case 50:
 282                         if ((fc & 0xFFFF) != fc) {
 283                                 fc &= 0xFFFF;
 284                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 285                         }
 286                         break;
 287                 default:
 288                         if ((fc & 0xFF) != fc) {
 289                                 fc &= 0xFF;
 290                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 291                         }
 292                         break;
 293         }
 294
 295         PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
 296         PrintAndLog("Press pm3-button to abort simulation or run another command");
 297
 298         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 299         uint64_t arg2 = 50;              // clk RF/50 invert=0
 300         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 301
 302         for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
 303                 if (ukbhit()) {
 304                         PrintAndLog("aborted via keyboard!");
 305                         c.cmd = CMD_PING;
 306                         c.arg[0] = 0x00;
 307                         c.arg[1] = 0x00;
 308                         c.arg[2] = 0x00;
 309                         clearCommandBuffer();
 310                         SendCommand(&c);
 311                         return 1;
 312                 }
 313
 314                 (void)getAWIDBits(fmtlen, fc, cn, bs);
 315                 memcpy(c.d.asBytes, bs, size);
 316                 clearCommandBuffer();
 317                 SendCommand(&c);
 318
 319                 PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 320                 // pause
 321                 sleep(1);
 322         }
 323         return 0;
 324 }
 325
 326 static command_t CommandTable[] = {
 327         {"help",      CmdHelp,         1, "This help"},
 328         {"fskdemod",  CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
 329         {"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
 330         {"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"},
 331         {"brute",         CmdAWIDBrute,    0, "<Facility-Code> -- bruteforce card number"},
 332         {NULL, NULL, 0, NULL}
 333 };
 334
 335 int CmdLFAWID(const char *Cmd) {
 336         clearCommandBuffer();
 337         CmdsParse(CommandTable, Cmd);
 338         return 0;
 339 }
 340
 341 int CmdHelp(const char *Cmd) {
 342         CmdsHelp(CommandTable);
 343         return 0;
 344 }