git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfnoralsy.c

   1 //-----------------------------------------------------------------------------
   2 //
   3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   4 // at your option, any later version. See the LICENSE.txt file for the text of
   5 // the license.
   6 //-----------------------------------------------------------------------------
   7 // Low frequency Noralsy tag commands
   8 //-----------------------------------------------------------------------------
   9 #include "cmdlfnoralsy.h"
  10
  11 static int CmdHelp(const char *Cmd);
  12
  13 int usage_lf_noralsy_clone(void){
  14         PrintAndLog("clone a Noralsy tag to a T55x7 tag.");
  15         PrintAndLog("Usage: lf noralsy clone [h] <card id> <year> <Q5>");
  16         PrintAndLog("Options:");
  17         PrintAndLog("      h          : This help");
  18         PrintAndLog("      <card id>  : Noralsy card ID");
  19         PrintAndLog("      <year>     : Tag allocation year");
  20         PrintAndLog("      <Q5>       : specify write to Q5 (t5555 instead of t55x7)");
  21         PrintAndLog("");
  22         PrintAndLog("Sample: lf noralsy clone 112233");
  23         return 0;
  24 }
  25
  26 int usage_lf_noralsy_sim(void) {
  27         PrintAndLog("Enables simulation of Noralsy card with specified card number.");
  28         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  29         PrintAndLog("");
  30         PrintAndLog("Usage:  lf noralsy sim [h] <card id> <year>");
  31         PrintAndLog("Options:");
  32         PrintAndLog("      h          : This help");
  33         PrintAndLog("      <card id>  : Noralsy card ID");
  34         PrintAndLog("      <year>     : Tag allocation year");
  35         PrintAndLog("");
  36         PrintAndLog("Sample: lf noralsy sim 112233");
  37         return 0;
  38 }
  39
  40 static uint8_t noralsy_chksum( uint8_t* bits, uint8_t len) {
  41     uint8_t sum = 0;
  42     for (uint8_t i = 0; i < len; i += 4)
  43         sum ^= bytebits_to_byte(bits+i, 4);
  44     return sum & 0x0F ;
  45 }
  46 int getnoralsyBits(uint32_t id, uint16_t year, uint8_t *bits) {
  47         //preamp
  48         num_to_bytebits(0xBB0214FF, 32, bits);  // --> Have seen 0xBB0214FF / 0xBB0314FF  UNKNOWN
  49
  50         //convert ID into BCD-format
  51         id = DEC2BCD(id);
  52         year = DEC2BCD(year);
  53         year &= 0xFF;
  54
  55         uint16_t sub1 = (id & 0xFFF0000) >> 16;
  56         uint8_t sub2 = (id & 0x000FF00) >> 8;
  57         uint8_t sub3 = (id & 0x00000FF);
  58
  59         num_to_bytebits(sub1, 12, bits+32);
  60         num_to_bytebits(year, 8, bits+44);
  61         num_to_bytebits(0, 4, bits+52);   // --> UNKNOWN. Flag?
  62
  63         num_to_bytebits(sub2, 8, bits+56);
  64         num_to_bytebits(sub3, 8, bits+64);
  65
  66         //chksum byte
  67         uint8_t chksum = noralsy_chksum(bits+32, 40);
  68         num_to_bytebits(chksum, 4, bits+72);
  69         chksum = noralsy_chksum(bits, 76);
  70         num_to_bytebits(chksum, 4, bits+76);
  71         return 1;
  72 }
  73
  74 /*
  75 *
  76 * 2520116 | BB0314FF2529900116360000 | 10111011 00000011 00010100 11111111 00100101 00101001 10010000 00000001 00010110 00110110 00000000 00000000
  77 *                       aaaaaaaaiii***iiiicc----                                       iiiiiiii iiiiYYYY YYYY**** iiiiiiii iiiiiiii cccccccc
  78 *
  79 * a = fixed value BB0314FF
  80 * i = printed id, BCD-format
  81 * Y = year
  82 * c = checksum
  83 *
  84 **/
  85
  86 //see ASKDemod for what args are accepted
  87 int CmdNoralsyDemod(const char *Cmd) {
  88
  89         //ASK / Manchester
  90         bool st = true;
  91         if (!ASKDemod_ext("32 0 0", FALSE, FALSE, 1, &st)) {
  92                 if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: ASK/Manchester Demod failed");
  93                 return 0;
  94         }
  95         size_t size = DemodBufferLen;
  96         int ans = NoralsyDemod_AM(DemodBuffer, &size);
  97         if (ans < 0){
  98                 if (g_debugMode){
  99                         if (ans == -1)
 100                                 PrintAndLog("DEBUG: Error - Noralsy: too few bits found");
 101                         else if (ans == -2)
 102                                 PrintAndLog("DEBUG: Error - Noralsy: preamble not found");
 103                         else if (ans == -3)
 104                                 PrintAndLog("DEBUG: Error - Noralsy: Size not correct: %d", size);
 105                         else
 106                                 PrintAndLog("DEBUG: Error - Noralsy: ans: %d", ans);
 107                 }
 108                 return 0;
 109         }
 110         setDemodBuf(DemodBuffer, 96, ans);
 111         setGrid_Clock(32);
 112
 113         //got a good demod
 114         uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
 115         uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
 116         uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
 117
 118         uint32_t cardid = ((raw2 & 0xFFF00000) >> 20) << 16;
 119         cardid |= (raw2 & 0xFF) << 8;
 120         cardid |= ((raw3 & 0xFF000000) >> 24);
 121         cardid = BCD2DEC(cardid);
 122
 123         uint16_t year = (raw2 & 0x000ff000) >> 12;
 124         year = BCD2DEC(year);
 125         year += ( year > 60 ) ? 1900: 2000;
 126
 127         // calc checksums
 128         uint8_t calc1 = noralsy_chksum(DemodBuffer+32, 40);
 129         uint8_t calc2 = noralsy_chksum(DemodBuffer, 76);
 130         uint8_t chk1 = 0, chk2 = 0;
 131         chk1 = bytebits_to_byte(DemodBuffer+72, 4);
 132         chk2 = bytebits_to_byte(DemodBuffer+76, 4);
 133         // test checksums
 134         if ( chk1 != calc1 ) {
 135                 printf("checksum 1 failed %x - %x\n", chk1, calc1);
 136                 return 0;
 137         }
 138         if ( chk2 != calc2 ) {
 139                 printf("checksum 2 failed %x - %x\n", chk2, calc2);
 140                 return 0;
 141         }
 142
 143         PrintAndLog("Noralsy Tag Found: Card ID %u, Year: %u Raw: %08X%08X%08X", cardid, year, raw1 ,raw2, raw3);
 144         return 1;
 145 }
 146
 147 int CmdNoralsyRead(const char *Cmd) {
 148         CmdLFRead("s");
 149         getSamples("8000",TRUE);
 150         return CmdNoralsyDemod(Cmd);
 151 }
 152
 153 int CmdNoralsyClone(const char *Cmd) {
 154
 155         uint16_t year = 0;
 156         uint32_t id = 0;
 157         uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR | 3 << T55x7_MAXBLOCK_SHIFT, 0, 0};
 158         uint8_t bits[96];
 159         uint8_t *bs = bits;
 160         memset(bs, 0, sizeof(bits));
 161
 162         char cmdp = param_getchar(Cmd, 0);
 163         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_clone();
 164
 165         id = param_get32ex(Cmd, 0, 0, 10);
 166         year = param_get32ex(Cmd, 1, 2000, 10);
 167
 168         //Q5
 169         if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') {
 170                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 171                 blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1) << T5555_BITRATE_SHIFT | T5555_ST_TERMINATOR | 3 << T5555_MAXBLOCK_SHIFT;
 172         }
 173
 174          if ( !getnoralsyBits(id, year, bs)) {
 175                 PrintAndLog("Error with tag bitstream generation.");
 176                 return 1;
 177         }
 178
 179         //
 180         blocks[1] = bytebits_to_byte(bs,32);
 181         blocks[2] = bytebits_to_byte(bs+32,32);
 182         blocks[3] = bytebits_to_byte(bs+64,32);
 183
 184         PrintAndLog("Preparing to clone Noralsy to T55x7 with CardId: %u", id);
 185         PrintAndLog("Blk | Data ");
 186         PrintAndLog("----+------------");
 187         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 188         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 189         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 190         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 191
 192         UsbCommand resp;
 193         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 194
 195         for (int i = 3; i >= 0; --i) {
 196                 c.arg[0] = blocks[i];
 197                 c.arg[1] = i;
 198                 clearCommandBuffer();
 199                 SendCommand(&c);
 200                 if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
 201                         PrintAndLog("Error occurred, device did not respond during write operation.");
 202                         return -1;
 203                 }
 204         }
 205     return 0;
 206 }
 207
 208 int CmdNoralsySim(const char *Cmd) {
 209
 210         uint8_t bits[96];
 211         uint8_t *bs = bits;
 212         memset(bs, 0, sizeof(bits));
 213
 214         uint16_t year = 0;
 215         uint32_t id = 0;
 216
 217         char cmdp = param_getchar(Cmd, 0);
 218         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_sim();
 219
 220         id = param_get32ex(Cmd, 0, 0, 10);
 221         year = param_get32ex(Cmd, 1, 2000, 10);
 222
 223         uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
 224         uint16_t arg1, arg2;
 225         size_t size = 96;
 226         arg1 = clk << 8 | encoding;
 227         arg2 = invert << 8 | separator;
 228
 229          if ( !getnoralsyBits(id, year, bs)) {
 230                 PrintAndLog("Error with tag bitstream generation.");
 231                 return 1;
 232         }
 233
 234         PrintAndLog("Simulating Noralsy - CardId: %u", id);
 235
 236         UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
 237         memcpy(c.d.asBytes, bs, size);
 238         clearCommandBuffer();
 239         SendCommand(&c);
 240         return 0;
 241 }
 242
 243 static command_t CommandTable[] = {
 244     {"help",    CmdHelp,                1, "This help"},
 245         {"read",        CmdNoralsyRead, 0, "Attempt to read and extract tag data"},
 246         {"clone",       CmdNoralsyClone,0, "clone Noralsy tag"},
 247         {"sim",         CmdNoralsySim,  0, "simulate Noralsy tag"},
 248     {NULL, NULL, 0, NULL}
 249 };
 250
 251 int CmdLFNoralsy(const char *Cmd) {
 252         clearCommandBuffer();
 253     CmdsParse(CommandTable, Cmd);
 254     return 0;
 255 }
 256
 257 int CmdHelp(const char *Cmd) {
 258     CmdsHelp(CommandTable);
 259     return 0;
 260 }