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