cvs.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 //see ASKDemod for what args are accepted
  75 int CmdNoralsyDemod(const char *Cmd) {
  76
  77         //ASK / Manchester
  78         bool st = true;
  79         if (!ASKDemod_ext("32 0 0", FALSE, FALSE, 1, &st)) {
  80                 if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: ASK/Manchester Demod failed");
  81                 return 0;
  82         }
  83         size_t size = DemodBufferLen;
  84         int ans = NoralsyDemod_AM(DemodBuffer, &size);
  85         if (ans < 0){
  86                 if (g_debugMode){
  87                         if (ans == -1)
  88                                 PrintAndLog("DEBUG: Error - Noralsy: too few bits found");
  89                         else if (ans == -2)
  90                                 PrintAndLog("DEBUG: Error - Noralsy: preamble not found");
  91                         else if (ans == -3)
  92                                 PrintAndLog("DEBUG: Error - Noralsy: Size not correct: %d", size);
  93                         else
  94                                 PrintAndLog("DEBUG: Error - Noralsy: ans: %d", ans);
  95                 }
  96                 return 0;
  97         }
  98         setDemodBuf(DemodBuffer, 96, ans);
  99
 100         //got a good demod
 101         uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
 102         uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32);
 103         uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32);
 104
 105         uint32_t cardid = ((raw2 & 0xFFF00000) >> 20) << 16;
 106         cardid |= (raw2 & 0xFF) << 8;
 107         cardid |= ((raw3 & 0xFF000000) >> 24);
 108         cardid = BCD2DEC(cardid);
 109
 110         uint16_t year = (raw2 & 0x000ff000) >> 12;
 111         year = BCD2DEC(year);
 112         year += ( year > 60 ) ? 1900: 2000;
 113
 114         // calc checksums
 115         uint8_t calc1 = noralsy_chksum(DemodBuffer+32, 40);
 116         uint8_t calc2 = noralsy_chksum(DemodBuffer, 76);
 117         uint8_t chk1 = 0, chk2 = 0;
 118         chk1 = bytebits_to_byte(DemodBuffer+72, 4);
 119         chk2 = bytebits_to_byte(DemodBuffer+76, 4);
 120         // test checksums
 121         if ( chk1 != calc1 ) {
 122                 printf("checksum 1 failed %x - %x\n", chk1, calc1);
 123                 return 0;
 124         }
 125         if ( chk2 != calc2 ) {
 126                 printf("checksum 2 failed %x - %x\n", chk2, calc2);
 127                 return 0;
 128         }
 129
 130         PrintAndLog("Noralsy Tag Found: Card ID %u, Year: %u Raw: %08X%08X%08X", cardid, year, raw1 ,raw2, raw3);
 131         return 1;
 132 }
 133
 134 int CmdNoralsyRead(const char *Cmd) {
 135         CmdLFRead("s");
 136         getSamples("8000",TRUE);
 137         return CmdNoralsyDemod(Cmd);
 138 }
 139
 140 int CmdNoralsyClone(const char *Cmd) {
 141
 142         uint16_t year = 0;
 143         uint32_t id = 0;
 144         uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR |3<<T55x7_MAXBLOCK_SHIFT, 0, 0};
 145         uint8_t bits[96];
 146         uint8_t *bs = bits;
 147         memset(bs, 0, sizeof(bits));
 148
 149         char cmdp = param_getchar(Cmd, 0);
 150         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_clone();
 151
 152         id = param_get32ex(Cmd, 0, 0, 10);
 153         year = param_get32ex(Cmd, 1, 2000, 10);
 154
 155         //Q5
 156         if (param_getchar(Cmd, 1) == 'Q' || param_getchar(Cmd, 1) == 'q') {
 157                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 158                 blocks[0] = T5555_MODULATION_MANCHESTER | 32<<T5555_BITRATE_SHIFT | T5555_ST_TERMINATOR | 3<<T5555_MAXBLOCK_SHIFT;
 159         }
 160
 161          if ( !getnoralsyBits(id, year, bs)) {
 162                 PrintAndLog("Error with tag bitstream generation.");
 163                 return 1;
 164         }
 165
 166         //
 167         blocks[1] = bytebits_to_byte(bs,32);
 168         blocks[2] = bytebits_to_byte(bs+32,32);
 169         blocks[3] = bytebits_to_byte(bs+64,32);
 170
 171         PrintAndLog("Preparing to clone Noralsy to T55x7 with CardId: %u", id);
 172         PrintAndLog("Blk | Data ");
 173         PrintAndLog("----+------------");
 174         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 175         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 176         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 177         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 178
 179         UsbCommand resp;
 180         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 181
 182         for (int i = 3; i >= 0; --i) {
 183                 c.arg[0] = blocks[i];
 184                 c.arg[1] = i;
 185                 clearCommandBuffer();
 186                 SendCommand(&c);
 187                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 188                         PrintAndLog("Error occurred, device did not respond during write operation.");
 189                         return -1;
 190                 }
 191         }
 192     return 0;
 193 }
 194
 195 int CmdNoralsySim(const char *Cmd) {
 196
 197         uint8_t bits[96];
 198         uint8_t *bs = bits;
 199         memset(bs, 0, sizeof(bits));
 200
 201         uint16_t year = 0;
 202         uint32_t id = 0;
 203
 204         char cmdp = param_getchar(Cmd, 0);
 205         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_sim();
 206
 207         id = param_get32ex(Cmd, 0, 0, 10);
 208         year = param_get32ex(Cmd, 1, 2000, 10);
 209
 210         uint8_t clk = 32, encoding = 1, separator = 1, invert = 0;
 211         uint16_t arg1, arg2;
 212         size_t size = 96;
 213         arg1 = clk << 8 | encoding;
 214         arg2 = invert << 8 | separator;
 215
 216          if ( !getnoralsyBits(id, year, bs)) {
 217                 PrintAndLog("Error with tag bitstream generation.");
 218                 return 1;
 219         }
 220
 221         PrintAndLog("Simulating Noralsy - CardId: %u", id);
 222
 223         UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
 224         memcpy(c.d.asBytes, bs, size);
 225         clearCommandBuffer();
 226         SendCommand(&c);
 227         return 0;
 228 }
 229
 230 static command_t CommandTable[] = {
 231     {"help",    CmdHelp,                1, "This help"},
 232         {"read",        CmdNoralsyRead, 0, "Attempt to read and extract tag data"},
 233         {"clone",       CmdNoralsyClone,0, "clone Noralsy tag"},
 234         {"sim",         CmdNoralsySim,  0, "simulate Noralsy tag"},
 235     {NULL, NULL, 0, NULL}
 236 };
 237
 238 int CmdLFNoralsy(const char *Cmd) {
 239         clearCommandBuffer();
 240     CmdsParse(CommandTable, Cmd);
 241     return 0;
 242 }
 243
 244 int CmdHelp(const char *Cmd) {
 245     CmdsHelp(CommandTable);
 246     return 0;
 247 }