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         //get binary from fsk wave
  92         int idx = AWIDdemodFSK(BitStream, &size);
  93         if (idx<=0){
  94                 if (g_debugMode){
  95                         if (idx == -1)
  96                                 PrintAndLog("DEBUG: Error - not enough samples");
  97                         else if (idx == -2)
  98                                 PrintAndLog("DEBUG: Error - only noise found");
  99                         else if (idx == -3)
 100                                 PrintAndLog("DEBUG: Error - problem during FSK demod");
 101                         else if (idx == -4)
 102                                 PrintAndLog("DEBUG: Error - AWID preamble not found");
 103                         else if (idx == -5)
 104                                 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
 105                         else
 106                                 PrintAndLog("DEBUG: Error %d",idx);
 107                 }
 108                 return 0;
 109         }
 110
 111         // Index map
 112         // 0            10            20            30              40            50              60
 113         // |            |             |             |               |             |               |
 114         // 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
 115         // -----------------------------------------------------------------------------
 116         // 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
 117         // 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
 118         //          |---26 bit---|    |-----117----||-------------142-------------|
 119         // b = format bit len, o = odd parity of last 3 bits
 120         // f = facility code, c = card number
 121         // w = wiegand parity
 122         // (26 bit format shown)
 123
 124         //get raw ID before removing parities
 125         uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
 126         uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
 127         uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
 128         setDemodBuf(BitStream,96,idx);
 129
 130         size = removeParity(BitStream, idx+8, 4, 1, 88);
 131         if (size != 66){
 132                 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
 133                 return 0;
 134         }
 135         // ok valid card found!
 136
 137         // Index map
 138         // 0           10         20        30          40        50        60
 139         // |           |          |         |           |         |         |
 140         // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
 141         // -----------------------------------------------------------------------------
 142         // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
 143         // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 144         // |26 bit|   |-117--| |-----142------|
 145         // b = format bit len, o = odd parity of last 3 bits
 146         // f = facility code, c = card number
 147         // w = wiegand parity
 148         // (26 bit format shown)
 149
 150         uint32_t fc = 0;
 151         uint32_t cardnum = 0;
 152         uint32_t code1 = 0;
 153         uint32_t code2 = 0;
 154         uint8_t fmtLen = bytebits_to_byte(BitStream,8);
 155         if (fmtLen==26){
 156                 fc = bytebits_to_byte(BitStream+9, 8);
 157                 cardnum = bytebits_to_byte(BitStream+17, 16);
 158                 code1 = bytebits_to_byte(BitStream+8,fmtLen);
 159                 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
 160         } else {
 161                 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
 162                 if (fmtLen>32){
 163                         code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
 164                         code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
 165                         PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
 166                 } else{
 167                         code1 = bytebits_to_byte(BitStream+8,fmtLen);
 168                         PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
 169                 }
 170         }
 171         if (g_debugMode){
 172                 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
 173                 printDemodBuff();
 174         }
 175         //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
 176         return 1;
 177 }
 178
 179 //refactored by marshmellow
 180 int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t       *AWIDBits) {
 181         uint8_t pre[66];
 182         memset(pre, 0, sizeof(pre));
 183         AWIDBits[7]=1;
 184         num_to_bytebits(26, 8, pre);
 185
 186         uint8_t wiegand[24];
 187         num_to_bytebits(fc, 8, wiegand);
 188         num_to_bytebits(cn, 16, wiegand+8);
 189
 190         wiegand_add_parity(pre+8, wiegand, 24);
 191
 192         size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
 193         if (bitLen != 88) return 0;
 194         //for (uint8_t i = 0; i<3; i++){
 195         //      PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
 196         //}
 197         return 1;
 198 }
 199
 200 int CmdAWIDSim(const char *Cmd) {
 201         uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
 202         uint8_t BitStream[96];
 203         uint8_t *bs = BitStream;
 204         size_t size = sizeof(BitStream);
 205         memset(bs, 0, size);
 206
 207         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 208         uint64_t arg2 = 50; // clk RF/50 invert=0
 209
 210         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
 211
 212         fcode = (fc & 0x000000FF);
 213         cnum = (cn & 0x0000FFFF);
 214
 215         if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
 216         if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
 217
 218         PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
 219         PrintAndLog("Press pm3-button to abort simulation or run another command");
 220
 221         if (!getAWIDBits(fc, cn, bs)) {
 222                 PrintAndLog("Error with tag bitstream generation.");
 223                 return 1;
 224         }
 225         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 226         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 227         memcpy(c.d.asBytes, bs, size);
 228         clearCommandBuffer();
 229         SendCommand(&c);
 230         return 0;
 231 }
 232
 233 int CmdAWIDClone(const char *Cmd) {
 234         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 235         uint32_t fc=0,cn=0;
 236         uint8_t BitStream[96];
 237         uint8_t *bs=BitStream;
 238         memset(bs,0,sizeof(BitStream));
 239
 240         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
 241
 242         if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
 243                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | ((50-2)>>1)<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 244
 245         if ((fc & 0xFF) != fc) {
 246                 fc &= 0xFF;
 247                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 248         }
 249         if ((cn & 0xFFFF) != cn) {
 250                 cn &= 0xFFFF;
 251                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 252         }
 253
 254         if ( !getAWIDBits(fc, cn, bs)) {
 255                 PrintAndLog("Error with tag bitstream generation.");
 256                 return 1;
 257         }
 258
 259         blocks[1] = bytebits_to_byte(bs,32);
 260         blocks[2] = bytebits_to_byte(bs+32,32);
 261         blocks[3] = bytebits_to_byte(bs+64,32);
 262
 263         PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
 264             fc, cn);
 265         PrintAndLog("Blk | Data ");
 266         PrintAndLog("----+------------");
 267         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 268         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 269         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 270         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 271
 272         UsbCommand resp;
 273         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 274
 275         for (uint8_t i=0; i<4; i++) {
 276                 c.cmd = CMD_T55XX_WRITE_BLOCK;
 277                 c.arg[0] = blocks[i];
 278                 c.arg[1] = i;
 279                 c.arg[2] = 0;
 280                 clearCommandBuffer();
 281                 SendCommand(&c);
 282                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 283                         PrintAndLog("Error occurred, device did not respond during write operation.");
 284                         return -1;
 285                 }
 286
 287         }
 288         return 0;
 289 }
 290
 291 static command_t CommandTable[] = {
 292         {"help",      CmdHelp,         1, "This help"},
 293         {"demod",     CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from the GraphBuffer"},
 294         {"read",      CmdAWIDReadFSK,  0, "['1'] Realtime AWID FSK read from the antenna (option '1' for one tag only)"},
 295         {"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
 296         {"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
 297         {NULL, NULL, 0, NULL}
 298 };
 299
 300 int CmdLFAWID(const char *Cmd) {
 301         CmdsParse(CommandTable, Cmd);
 302         return 0;
 303 }
 304
 305 int CmdHelp(const char *Cmd) {
 306         CmdsHelp(CommandTable);
 307         return 0;
 308 }