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 incremental attack against reader.");
  80         PrintAndLog("");
  81         PrintAndLog("Usage:  lf awid brute [h] <format> <facility-code>");
  82         PrintAndLog("Options :");
  83         PrintAndLog("                h :  This help");
  84         PrintAndLog("         <format> :  format length 26|50");
  85         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  86         PrintAndLog("");
  87         PrintAndLog("Samples");
  88         PrintAndLog("       lf awid brute 26 224");
  89         PrintAndLog("       lf awid brute 50 2001");
  90         return 0;
  91 }
  92
  93 int CmdAWIDDemodFSK(const char *Cmd) {
  94         int findone = 0;
  95         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
  96         if (Cmd[0] == '1') findone = 1;
  97
  98         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
  99         clearCommandBuffer();
 100         SendCommand(&c);
 101         return 0;
 102 }
 103
 104 //refactored by marshmellow
 105 int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
 106
 107         // the return bits, preamble 0000 0001
 108         bits[7] = 1;
 109
 110         uint8_t pre[66];
 111         memset(pre, 0, sizeof(pre));
 112
 113         // add formatlength
 114         num_to_bytebits(fmtlen, 8, pre);
 115
 116         // add facilitycode, cardnumber and wiegand parity bits
 117         if ( fmtlen == 26 ) {
 118                 uint8_t wiegand[24];
 119                 num_to_bytebits(fc, 8, wiegand);
 120                 num_to_bytebits(cn, 16, wiegand+8);
 121                 wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 122         } else {
 123                 uint8_t wiegand[48];
 124                 num_to_bytebits(fc, 16, wiegand);
 125                 num_to_bytebits(cn, 32, wiegand+16);
 126                 wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
 127         }
 128
 129         // add AWID 4bit parity
 130         size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
 131
 132         if (bitLen != 88) return 0;
 133         return 1;
 134 }
 135
 136 int CmdAWIDSim(const char *Cmd) {
 137         uint32_t fc = 0, cn = 0;
 138         uint8_t fmtlen = 0;
 139         uint8_t bits[96];
 140         uint8_t *bs = bits;
 141         size_t size = sizeof(bits);
 142         memset(bs, 0x00, size);
 143
 144         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 145         uint64_t arg2 = 50; // clk RF/50 invert=0
 146
 147         char cmdp = param_getchar(Cmd, 0);
 148         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
 149
 150         fmtlen = param_get8(Cmd, 0);
 151         fc = param_get32ex(Cmd, 1, 0, 10);
 152         cn = param_get32ex(Cmd, 2, 0, 10);
 153         if ( !fc || !cn) return usage_lf_awid_sim();
 154
 155         switch(fmtlen) {
 156                 case 26:
 157                         if ((fc & 0xFF) != fc) {
 158                                 fc &= 0xFF;
 159                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 160                         }
 161
 162                         if ((cn & 0xFFFF) != cn) {
 163                                 cn &= 0xFFFF;
 164                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 165                         }
 166                         break;
 167                 case 50:
 168                         if ((fc & 0xFFFF) != fc) {
 169                                 fc &= 0xFFFF;
 170                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 171                         }
 172                         break;
 173                 default: break;
 174         }
 175
 176         PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
 177         PrintAndLog("Press pm3-button to abort simulation or run another command");
 178
 179         if (!getAWIDBits(fmtlen, fc, cn, bs)) {
 180                 PrintAndLog("Error with tag bitstream generation.");
 181                 return 1;
 182         }
 183         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 184         // arg1 --- fcHigh<<8 + fcLow
 185         // arg2 --- Inversion and clk setting
 186         // 96   --- Bitstream length: 96-bits == 12 bytes
 187         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 188         memcpy(c.d.asBytes, bs, size);
 189         clearCommandBuffer();
 190         SendCommand(&c);
 191         return 0;
 192 }
 193
 194 int CmdAWIDClone(const char *Cmd) {
 195         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 196         uint32_t fc = 0, cn = 0;
 197         uint8_t fmtlen = 0;
 198         uint8_t bits[96];
 199         uint8_t *bs=bits;
 200         memset(bs,0,sizeof(bits));
 201
 202         char cmdp = param_getchar(Cmd, 0);
 203         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
 204
 205         fmtlen = param_get8(Cmd, 0);
 206         fc = param_get32ex(Cmd, 1, 0, 10);
 207         cn = param_get32ex(Cmd, 2, 0, 10);
 208
 209         if ( !fc || !cn) return usage_lf_awid_clone();
 210
 211         switch(fmtlen) {
 212                 case 50:
 213                         if ((fc & 0xFFFF) != fc) {
 214                                 fc &= 0xFFFF;
 215                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 216                         }
 217                         break;
 218                 default:
 219                         fmtlen = 26;
 220                         if ((fc & 0xFF) != fc) {
 221                                 fc &= 0xFF;
 222                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 223                         }
 224
 225                         if ((cn & 0xFFFF) != cn) {
 226                                 cn &= 0xFFFF;
 227                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 228                         }
 229                         break;
 230         }
 231
 232         if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q')
 233                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 234                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 235
 236         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 237                 PrintAndLog("Error with tag bitstream generation.");
 238                 return 1;
 239         }
 240
 241         blocks[1] = bytebits_to_byte(bs,32);
 242         blocks[2] = bytebits_to_byte(bs+32,32);
 243         blocks[3] = bytebits_to_byte(bs+64,32);
 244
 245         PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
 246         PrintAndLog("Blk | Data ");
 247         PrintAndLog("----+------------");
 248         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 249         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 250         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 251         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 252
 253         UsbCommand resp;
 254         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 255
 256         for (uint8_t i=0; i<4; i++) {
 257                 c.arg[0] = blocks[i];
 258                 c.arg[1] = i;
 259                 clearCommandBuffer();
 260                 SendCommand(&c);
 261                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)){
 262                         PrintAndLog("Error occurred, device did not respond during write operation.");
 263                         return -1;
 264                 }
 265         }
 266         return 0;
 267 }
 268
 269 int CmdAWIDBrute(const char *Cmd){
 270
 271         uint32_t fc = 0x00;
 272         uint8_t fmtlen = 0;
 273         uint8_t bits[96];
 274         uint8_t *bs = bits;
 275         size_t size = sizeof(bits);
 276         memset(bs, 0x00, size);
 277
 278         char cmdp = param_getchar(Cmd, 0);
 279         if (strlen(Cmd) > 4 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute();
 280
 281         fmtlen = param_get8(Cmd, 0);
 282         fc =  param_get32ex(Cmd, 1, 0, 10);
 283         if ( !fc ) return usage_lf_awid_brute();
 284
 285         switch(fmtlen) {
 286                 case 50:
 287                         if ((fc & 0xFFFF) != fc) {
 288                                 fc &= 0xFFFF;
 289                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
 290                         }
 291                         break;
 292                 default:
 293                         if ((fc & 0xFF) != fc) {
 294                                 fc &= 0xFF;
 295                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 296                         }
 297                         break;
 298         }
 299
 300         PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
 301         PrintAndLog("Press pm3-button to abort simulation or run another command");
 302
 303         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 304         uint64_t arg2 = 50;              // clk RF/50 invert=0
 305         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 306
 307         for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
 308                 if (ukbhit()) {
 309                         PrintAndLog("aborted via keyboard!");
 310                         c.cmd = CMD_PING;
 311                         c.arg[0] = 0x00;
 312                         c.arg[1] = 0x00;
 313                         c.arg[2] = 0x00;
 314                         clearCommandBuffer();
 315                         SendCommand(&c);
 316                         return 1;
 317                 }
 318
 319                 (void)getAWIDBits(fmtlen, fc, cn, bs);
 320                 memcpy(c.d.asBytes, bs, size);
 321                 clearCommandBuffer();
 322                 SendCommand(&c);
 323
 324                 PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 325                 // pause
 326                 sleep(1);
 327         }
 328         return 0;
 329 }
 330
 331 static command_t CommandTable[] = {
 332         {"help",      CmdHelp,         1, "This help"},
 333         {"fskdemod",  CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
 334         {"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
 335         {"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"},
 336         {"brute",         CmdAWIDBrute,    0, "<Facility-Code> -- bruteforce card number"},
 337         {NULL, NULL, 0, NULL}
 338 };
 339
 340 int CmdLFAWID(const char *Cmd) {
 341         clearCommandBuffer();
 342         CmdsParse(CommandTable, Cmd);
 343         return 0;
 344 }
 345
 346 int CmdHelp(const char *Cmd) {
 347         CmdsHelp(CommandTable);
 348         return 0;
 349 }