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 // FSK2a, RF/50, 96 bits (complete)
  12 //-----------------------------------------------------------------------------
  13
  14 #include <string.h>
  15 #include <stdio.h>      // sscanf
  16 #include "proxmark3.h"  // Definitions, USB controls, etc
  17 #include "cmdlfawid.h"
  18 #include "ui.h"         // PrintAndLog
  19 #include "cmdparser.h"  // CmdsParse, CmdsHelp
  20 #include "lfdemod.h"    // parityTest +
  21 #include "util.h"       // weigandparity
  22 #include "protocols.h"  // for T55xx config register definitions
  23 #include "cmddata.h"    // for printDemod and demodbuffer commands
  24 #include "graph.h"      // for getFromGraphBuff cmds
  25 #include "cmdmain.h"
  26
  27 static int CmdHelp(const char *Cmd);
  28
  29 int usage_lf_awid_read(void) {
  30         PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags.");
  31         PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
  32         PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card.");
  33         PrintAndLog("");
  34         PrintAndLog("Usage:  lf awid read ['1']");
  35         PrintAndLog("Options : ");
  36         PrintAndLog("  1 : (optional) stop after reading a single card");
  37         PrintAndLog("");
  38         PrintAndLog("Samples : lf awid read");
  39         PrintAndLog("        : lf awid read 1");
  40         return 0;
  41 }
  42
  43 int usage_lf_awid_sim(void) {
  44         PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number.");
  45         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  46         PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
  47         PrintAndLog("");
  48         PrintAndLog("Usage:  lf awid sim <Facility-Code> <Card-Number>");
  49         PrintAndLog("Options : ");
  50         PrintAndLog("  <Facility-Code> : 8-bit value representing the AWID facility code");
  51         PrintAndLog("  <Card Number>   : 16-bit value representing the AWID card number");
  52         PrintAndLog("");
  53         PrintAndLog("Sample : lf awid sim 224 1337");
  54         return 0;
  55 }
  56
  57 int usage_lf_awid_clone(void) {
  58         PrintAndLog("Enables cloning of AWID26 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("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
  61         PrintAndLog("");
  62         PrintAndLog("Usage:  lf awid clone <Facility-Code> <Card-Number>");
  63         PrintAndLog("Options : ");
  64         PrintAndLog("  <Facility-Code> : 8-bit value representing the AWID facility code");
  65         PrintAndLog("  <Card Number>   : 16-bit value representing the AWID card number");
  66         PrintAndLog("  Q5              : optional - clone to Q5 (T5555) instead of T55x7 chip");
  67         PrintAndLog("");
  68         PrintAndLog("Sample  : lf awid clone 224 1337");
  69         return 0;
  70 }
  71
  72 int CmdAWIDReadFSK(const char *Cmd) {
  73         int findone=0;
  74         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_read();
  75         if (Cmd[0] == '1') findone = 1;
  76
  77         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
  78         clearCommandBuffer();
  79         SendCommand(&c);
  80         return 0;
  81 }
  82 //by marshmellow
  83 //AWID Prox demod - FSK RF/50 with preamble of 00000001  (always a 96 bit data stream)
  84 //print full AWID Prox ID and some bit format details if found
  85 int CmdFSKdemodAWID(const char *Cmd)
  86 {
  87         uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
  88         size_t size = getFromGraphBuf(BitStream);
  89         if (size==0) return 0;
  90
  91         int waveIdx = 0;
  92         //get binary from fsk wave
  93         int idx = AWIDdemodFSK(BitStream, &size, &waveIdx);
  94         if (idx<=0){
  95                 if (g_debugMode){
  96                         if (idx == -1)
  97                                 PrintAndLog("DEBUG: Error - not enough samples");
  98                         else if (idx == -2)
  99                                 PrintAndLog("DEBUG: Error - only noise found");
 100                         else if (idx == -3)
 101                                 PrintAndLog("DEBUG: Error - problem during FSK demod");
 102                         else if (idx == -4)
 103                                 PrintAndLog("DEBUG: Error - AWID preamble not found");
 104                         else if (idx == -5)
 105                                 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
 106                         else
 107                                 PrintAndLog("DEBUG: Error %d",idx);
 108                 }
 109                 return 0;
 110         }
 111
 112         // Index map
 113         // 0            10            20            30              40            50              60
 114         // |            |             |             |               |             |               |
 115         // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
 116         // -----------------------------------------------------------------------------
 117         // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
 118         // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
 119         //          |---26 bit---|    |-----117----||-------------142-------------|
 120         // b = format bit len, o = odd parity of last 3 bits
 121         // f = facility code, c = card number
 122         // w = wiegand parity
 123         // (26 bit format shown)
 124
 125         //get raw ID before removing parities
 126         uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
 127         uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
 128         uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
 129         setDemodBuf(BitStream,96,idx);
 130         setClockGrid(50, waveIdx + (idx*50));
 131
 132         size = removeParity(BitStream, idx+8, 4, 1, 88);
 133         if (size != 66){
 134                 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
 135                 return 0;
 136         }
 137         // ok valid card found!
 138
 139         // Index map
 140         // 0           10         20        30          40        50        60
 141         // |           |          |         |           |         |         |
 142         // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
 143         // -----------------------------------------------------------------------------
 144         // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
 145         // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 146         // |26 bit|   |-117--| |-----142------|
 147         // b = format bit len, o = odd parity of last 3 bits
 148         // f = facility code, c = card number
 149         // w = wiegand parity
 150         // (26 bit format shown)
 151
 152         uint32_t fc = 0;
 153         uint32_t cardnum = 0;
 154         uint32_t code1 = 0;
 155         uint32_t code2 = 0;
 156         uint8_t fmtLen = bytebits_to_byte(BitStream,8);
 157         if (fmtLen==26){
 158                 fc = bytebits_to_byte(BitStream+9, 8);
 159                 cardnum = bytebits_to_byte(BitStream+17, 16);
 160                 code1 = bytebits_to_byte(BitStream+8,fmtLen);
 161                 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
 162         } else {
 163                 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
 164                 if (fmtLen>32){
 165                         code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
 166                         code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
 167                         PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
 168                 } else{
 169                         code1 = bytebits_to_byte(BitStream+8,fmtLen);
 170                         PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
 171                 }
 172         }
 173         if (g_debugMode){
 174                 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
 175                 printDemodBuff();
 176         }
 177         //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
 178         return 1;
 179 }
 180
 181 //refactored by marshmellow
 182 int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t       *AWIDBits) {
 183         uint8_t pre[66];
 184         memset(pre, 0, sizeof(pre));
 185         AWIDBits[7]=1;
 186         num_to_bytebits(26, 8, pre);
 187
 188         uint8_t wiegand[24];
 189         num_to_bytebits(fc, 8, wiegand);
 190         num_to_bytebits(cn, 16, wiegand+8);
 191
 192         wiegand_add_parity(pre+8, wiegand, 24);
 193
 194         size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
 195         if (bitLen != 88) return 0;
 196         //for (uint8_t i = 0; i<3; i++){
 197         //      PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
 198         //}
 199         return 1;
 200 }
 201
 202 int CmdAWIDSim(const char *Cmd) {
 203         uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
 204         uint8_t BitStream[96];
 205         uint8_t *bs = BitStream;
 206         size_t size = sizeof(BitStream);
 207         memset(bs, 0, size);
 208
 209         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 210         uint64_t arg2 = 50; // clk RF/50 invert=0
 211
 212         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
 213
 214         fcode = (fc & 0x000000FF);
 215         cnum = (cn & 0x0000FFFF);
 216
 217         if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
 218         if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
 219
 220         PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
 221         PrintAndLog("Press pm3-button to abort simulation or run another command");
 222
 223         if (!getAWIDBits(fc, cn, bs)) {
 224                 PrintAndLog("Error with tag bitstream generation.");
 225                 return 1;
 226         }
 227         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 228         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 229         memcpy(c.d.asBytes, bs, size);
 230         clearCommandBuffer();
 231         SendCommand(&c);
 232         return 0;
 233 }
 234
 235 int CmdAWIDClone(const char *Cmd) {
 236         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 237         uint32_t fc=0,cn=0;
 238         uint8_t BitStream[96];
 239         uint8_t *bs=BitStream;
 240         memset(bs,0,sizeof(BitStream));
 241
 242         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
 243
 244         if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
 245                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | ((50-2)>>1)<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 246
 247         if ((fc & 0xFF) != fc) {
 248                 fc &= 0xFF;
 249                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 250         }
 251         if ((cn & 0xFFFF) != cn) {
 252                 cn &= 0xFFFF;
 253                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 254         }
 255
 256         if ( !getAWIDBits(fc, cn, bs)) {
 257                 PrintAndLog("Error with tag bitstream generation.");
 258                 return 1;
 259         }
 260
 261         blocks[1] = bytebits_to_byte(bs,32);
 262         blocks[2] = bytebits_to_byte(bs+32,32);
 263         blocks[3] = bytebits_to_byte(bs+64,32);
 264
 265         PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
 266             fc, cn);
 267         PrintAndLog("Blk | Data ");
 268         PrintAndLog("----+------------");
 269         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 270         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 271         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 272         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 273
 274         UsbCommand resp;
 275         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 276
 277         for (uint8_t i=0; i<4; i++) {
 278                 c.cmd = CMD_T55XX_WRITE_BLOCK;
 279                 c.arg[0] = blocks[i];
 280                 c.arg[1] = i;
 281                 c.arg[2] = 0;
 282                 clearCommandBuffer();
 283                 SendCommand(&c);
 284                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 285                         PrintAndLog("Error occurred, device did not respond during write operation.");
 286                         return -1;
 287                 }
 288
 289         }
 290         return 0;
 291 }
 292
 293 static command_t CommandTable[] = {
 294         {"help",      CmdHelp,         1, "This help"},
 295         {"demod",     CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from the GraphBuffer"},
 296         {"read",      CmdAWIDReadFSK,  0, "['1'] Realtime AWID FSK read from the antenna (option '1' for one tag only)"},
 297         {"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
 298         {"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
 299         {NULL, NULL, 0, NULL}
 300 };
 301
 302 int CmdLFAWID(const char *Cmd) {
 303         CmdsParse(CommandTable, Cmd);
 304         return 0;
 305 }
 306
 307 int CmdHelp(const char *Cmd) {
 308         CmdsHelp(CommandTable);
 309         return 0;
 310 }