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 AWID26 compatible reader mode printing details of scanned AWID26 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 AWID26 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 : lf awid fskdemod");
  36         PrintAndLog("          : lf awid fskdemod 1");
  37         return 0;
  38 }
  39
  40 int usage_lf_awid_sim(void) {
  41         PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number.");
  42         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  43         PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
  44         PrintAndLog("");
  45         PrintAndLog("Usage:  lf awid sim <Facility-Code> <Card-Number>");
  46         PrintAndLog("Options :");
  47         PrintAndLog("  <Facility-Code> :  8-bit value AWID facility code");
  48         PrintAndLog("  <Card Number>   : 16-bit value AWID card number");
  49         PrintAndLog("");
  50         PrintAndLog("Sample : lf awid sim 224 1337");
  51         return 0;
  52 }
  53
  54 int usage_lf_awid_clone(void) {
  55         PrintAndLog("Enables cloning of AWID26 card with specified facility-code and card number onto T55x7.");
  56         PrintAndLog("The T55x7 must be on the antenna when issuing this command.  T55x7 blocks are calculated and printed in the process.");
  57         PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
  58         PrintAndLog("");
  59         PrintAndLog("Usage:  lf awid clone <Facility-Code> <Card-Number>");
  60         PrintAndLog("Options :");
  61         PrintAndLog("  <Facility-Code> : 8-bit value AWID facility code");
  62         PrintAndLog("  <Card Number>   : 16-bit value AWID card number");
  63         PrintAndLog("  Q5              : optional - clone to Q5 (T5555) instead of T55x7 chip");
  64         PrintAndLog("");
  65         PrintAndLog("Sample  : lf awid clone 224 1337");
  66         return 0;
  67 }
  68
  69 int usage_lf_awid_brute(void){
  70         PrintAndLog("Enables bruteforce of AWID26 reader with specified facility-code.");
  71         PrintAndLog("Per AWID26 format, the facility-code (FC) is 8-bit and the card number is 16-bit.");
  72         PrintAndLog("This is a incremental attack against reader.");
  73         PrintAndLog("");
  74         PrintAndLog("Usage:  lf awid brute <Facility-Code>");
  75         PrintAndLog("Options :");
  76         PrintAndLog("  <Facility-Code> :  8-bit value AWID facility code");
  77         PrintAndLog("");
  78         PrintAndLog("Sample  : lf awid brute 224");
  79         return 0;
  80 }
  81
  82 int CmdAWIDDemodFSK(const char *Cmd) {
  83         int findone = 0;
  84         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
  85         if (Cmd[0] == '1') findone = 1;
  86
  87         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
  88         clearCommandBuffer();
  89         SendCommand(&c);
  90         return 0;
  91 }
  92
  93 //refactored by marshmellow
  94 int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t       *AWIDBits) {
  95         uint8_t pre[66];
  96         memset(pre, 0, sizeof(pre));
  97         AWIDBits[7]=1;
  98         num_to_bytebits(26, 8, pre);
  99
 100         uint8_t wiegand[24];
 101         num_to_bytebits(fc, 8, wiegand);
 102         num_to_bytebits(cn, 16, wiegand+8);
 103
 104         wiegand_add_parity(pre+8, wiegand, 24);
 105         size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
 106
 107         if (bitLen != 88) return 0;
 108         return 1;
 109 }
 110
 111 int CmdAWIDSim(const char *Cmd) {
 112         uint32_t fcode = 0, cnum = 0, fc = 0, cn = 0;
 113         uint8_t bits[96];
 114         uint8_t *bs = bits;
 115         size_t size = sizeof(bits);
 116         memset(bs, 0x00, size);
 117
 118         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 119         uint64_t arg2 = 50; // clk RF/50 invert=0
 120
 121         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
 122
 123         fcode = (fc & 0x000000FF);
 124         cnum = (cn & 0x0000FFFF);
 125
 126         if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u", fc, fcode);
 127         if (cn != cnum)  PrintAndLog("Card number (%u) truncated to 16-bits: %u", cn, cnum);
 128
 129         PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n", fcode, cnum);
 130         PrintAndLog("Press pm3-button to abort simulation or run another command");
 131
 132         if (!getAWIDBits(fc, cn, bs)) {
 133                 PrintAndLog("Error with tag bitstream generation.");
 134                 return 1;
 135         }
 136         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 137         // arg1 --- fcHigh<<8 + fcLow
 138         // arg2 --- Inversion and clk setting
 139         // 96   --- Bitstream length: 96-bits == 12 bytes
 140         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 141         memcpy(c.d.asBytes, bs, size);
 142         clearCommandBuffer();
 143         SendCommand(&c);
 144         return 0;
 145 }
 146
 147 int CmdAWIDClone(const char *Cmd) {
 148         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 149         uint32_t fc=0,cn=0;
 150         uint8_t bits[96];
 151         uint8_t *bs=bits;
 152         memset(bs,0,sizeof(bits));
 153
 154         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
 155
 156         if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
 157                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 158
 159         if ((fc & 0xFF) != fc) {
 160                 fc &= 0xFF;
 161                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 162         }
 163
 164         if ((cn & 0xFFFF) != cn) {
 165                 cn &= 0xFFFF;
 166                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 167         }
 168
 169         if ( !getAWIDBits(fc, cn, bs)) {
 170                 PrintAndLog("Error with tag bitstream generation.");
 171                 return 1;
 172         }
 173
 174         blocks[1] = bytebits_to_byte(bs,32);
 175         blocks[2] = bytebits_to_byte(bs+32,32);
 176         blocks[3] = bytebits_to_byte(bs+64,32);
 177
 178         PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
 179             fc, cn);
 180         PrintAndLog("Blk | Data ");
 181         PrintAndLog("----+------------");
 182         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 183         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 184         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 185         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 186
 187         UsbCommand resp;
 188         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 189
 190         for (uint8_t i=0; i<4; i++) {
 191                 c.arg[0] = blocks[i];
 192                 c.arg[1] = i;
 193                 clearCommandBuffer();
 194                 SendCommand(&c);
 195                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 196                         PrintAndLog("Error occurred, device did not respond during write operation.");
 197                         return -1;
 198                 }
 199         }
 200         return 0;
 201 }
 202
 203 int CmdAWIDBrute(const char *Cmd){
 204
 205         uint8_t fc = 0x00;
 206         uint8_t bits[96];
 207         uint8_t *bs = bits;
 208         size_t size = sizeof(bits);
 209         memset(bs, 0x00, size);
 210
 211         char cmdp = param_getchar(Cmd, 0);
 212         if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute();
 213
 214         fc =  param_get8(Cmd, 0);
 215         if ( fc == 0) return usage_lf_awid_brute();
 216
 217         PrintAndLog("Bruteforceing AWID26 Reader");
 218         PrintAndLog("Press pm3-button to abort simulation or run another command");
 219
 220         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 221         uint64_t arg2 = 50;              // clk RF/50 invert=0
 222         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 223
 224         for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
 225                 if (ukbhit()) {
 226                         PrintAndLog("aborted via keyboard!");
 227                         c.cmd = CMD_PING;
 228                         c.arg[0] = 0x00;
 229                         c.arg[1] = 0x00;
 230                         c.arg[2] = 0x00;
 231                         clearCommandBuffer();
 232                         SendCommand(&c);
 233                         return 1;
 234                 }
 235
 236                 (void)getAWIDBits(fc, cn, bs);
 237                 memcpy(c.d.asBytes, bs, size);
 238                 clearCommandBuffer();
 239                 SendCommand(&c);
 240
 241                 PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 242                 // pause
 243                 sleep(1);
 244         }
 245         return 0;
 246 }
 247
 248 static command_t CommandTable[] = {
 249         {"help",      CmdHelp,         1, "This help"},
 250         {"fskdemod",  CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
 251         {"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
 252         {"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"},
 253         {"brute",         CmdAWIDBrute,    0, "<Facility-Code> -- bruteforce card number"},
 254         {NULL, NULL, 0, NULL}
 255 };
 256
 257 int CmdLFAWID(const char *Cmd) {
 258         clearCommandBuffer();
 259         CmdsParse(CommandTable, Cmd);
 260         return 0;
 261 }
 262
 263 int CmdHelp(const char *Cmd) {
 264         CmdsHelp(CommandTable);
 265         return 0;
 266 }