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 card 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("");
  73         PrintAndLog("Usage:  lf awid brute <Facility-Code>");
  74         PrintAndLog("Options :");
  75         PrintAndLog("  <Facility-Code> :  8-bit value AWID facility code");
  76         PrintAndLog("");
  77         PrintAndLog("Sample  : lf awid brute 224");
  78         return 0;
  79 }
  80
  81 int CmdAWIDDemodFSK(const char *Cmd) {
  82         int findone = 0;
  83         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
  84         if (Cmd[0] == '1') findone = 1;
  85
  86         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
  87         clearCommandBuffer();
  88         SendCommand(&c);
  89         return 0;
  90 }
  91
  92 //refactored by marshmellow
  93 int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t       *AWIDBits) {
  94         uint8_t pre[66];
  95         memset(pre, 0, sizeof(pre));
  96         AWIDBits[7]=1;
  97         num_to_bytebits(26, 8, pre);
  98
  99         uint8_t wiegand[24];
 100         num_to_bytebits(fc, 8, wiegand);
 101         num_to_bytebits(cn, 16, wiegand+8);
 102
 103         wiegand_add_parity(pre+8, wiegand, 24);
 104
 105         size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
 106         if (bitLen != 88) return 0;
 107         //for (uint8_t i = 0; i<3; i++){
 108         //      PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
 109         //}
 110         return 1;
 111 }
 112
 113 int CmdAWIDSim(const char *Cmd) {
 114         uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
 115         uint8_t bits[96];
 116         uint8_t *bs = bits;
 117         size_t size = sizeof(bits);
 118         memset(bs, 0, size);
 119
 120         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 121         uint64_t arg2 = 50; // clk RF/50 invert=0
 122
 123         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
 124
 125         fcode = (fc & 0x000000FF);
 126         cnum = (cn & 0x0000FFFF);
 127
 128         if (fc!=fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u", fc, fcode);
 129         if (cn!=cnum)  PrintAndLog("Card number (%u) truncated to 16-bits: %u", cn, cnum);
 130
 131         PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n", fcode, cnum);
 132         PrintAndLog("Press pm3-button to abort simulation or run another command");
 133
 134         if (!getAWIDBits(fc, cn, bs)) {
 135                 PrintAndLog("Error with tag bitstream generation.");
 136                 return 1;
 137         }
 138         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 139         // arg1 --- fcHigh<<8 + fcLow
 140         // arg2 --- Inversion and clk setting
 141         // 96   --- Bitstream length: 96-bits == 12 bytes
 142         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 143         memcpy(c.d.asBytes, bs, size);
 144         clearCommandBuffer();
 145         SendCommand(&c);
 146         return 0;
 147 }
 148
 149 int CmdAWIDClone(const char *Cmd) {
 150         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 151         uint32_t fc=0,cn=0;
 152         uint8_t bits[96];
 153         uint8_t *bs=bits;
 154         memset(bs,0,sizeof(bits));
 155
 156         if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
 157
 158         if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
 159                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 160
 161         if ((fc & 0xFF) != fc) {
 162                 fc &= 0xFF;
 163                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
 164         }
 165
 166         if ((cn & 0xFFFF) != cn) {
 167                 cn &= 0xFFFF;
 168                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
 169         }
 170
 171         if ( !getAWIDBits(fc, cn, bs)) {
 172                 PrintAndLog("Error with tag bitstream generation.");
 173                 return 1;
 174         }
 175
 176         blocks[1] = bytebits_to_byte(bs,32);
 177         blocks[2] = bytebits_to_byte(bs+32,32);
 178         blocks[3] = bytebits_to_byte(bs+64,32);
 179
 180         PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
 181             fc, cn);
 182         PrintAndLog("Blk | Data ");
 183         PrintAndLog("----+------------");
 184         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 185         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 186         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 187         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 188
 189         UsbCommand resp;
 190         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 191
 192         for (uint8_t i=0; i<4; i++) {
 193                 c.arg[0] = blocks[i];
 194                 c.arg[1] = i;
 195                 clearCommandBuffer();
 196                 SendCommand(&c);
 197                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 198                         PrintAndLog("Error occurred, device did not respond during write operation.");
 199                         return -1;
 200                 }
 201         }
 202         return 0;
 203 }
 204
 205 int CmdAWIDBrute(const char *Cmd){
 206
 207         uint8_t fc = 0x00;
 208         uint8_t bits[96];
 209         uint8_t *bs = bits;
 210         size_t size = sizeof(bits);
 211         memset(bs, 0x00, size);
 212
 213         char cmdp = param_getchar(Cmd, 0);
 214         if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute();
 215
 216         fc =  param_get8(Cmd, 0);
 217         if ( fc == 0) return usage_lf_awid_brute();
 218
 219         PrintAndLog("Bruteforceing AWID26");
 220         PrintAndLog("Press pm3-button to abort simulation or run another command");
 221
 222         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 223         uint64_t arg2 = 50;              // clk RF/50 invert=0
 224         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 225
 226         for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
 227                 if (ukbhit()) {
 228                         PrintAndLog("aborted via keyboard!");
 229                         c.cmd = CMD_PING;
 230                         c.arg[0] = 0x00;
 231                         c.arg[1] = 0x00;
 232                         c.arg[2] = 0x00;
 233                         clearCommandBuffer();
 234                         SendCommand(&c);
 235                         return 1;
 236                 }
 237
 238                 (void)getAWIDBits(fc, cn, bs);
 239                 memcpy(c.d.asBytes, bs, size);
 240                 clearCommandBuffer();
 241                 SendCommand(&c);
 242
 243                 PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 244                 // pause
 245                 sleep(1);
 246         }
 247         return 0;
 248 }
 249
 250 static command_t CommandTable[] = {
 251         {"help",      CmdHelp,         1, "This help"},
 252         {"fskdemod",  CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
 253         {"sim",       CmdAWIDSim,      0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
 254         {"clone",     CmdAWIDClone,    0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"},
 255         {"brute",         CmdAWIDBrute,    0, "<Facility-Code> -- bruteforce card number"},
 256         {NULL, NULL, 0, NULL}
 257 };
 258
 259 int CmdLFAWID(const char *Cmd) {
 260         CmdsParse(CommandTable, Cmd);
 261         return 0;
 262 }
 263
 264 int CmdHelp(const char *Cmd) {
 265         CmdsHelp(CommandTable);
 266         return 0;
 267 }