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

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Low frequency HID commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include "cmdlfhid.h"
  12
  13 static int CmdHelp(const char *Cmd);
  14
  15 int usage_lf_hid_wiegand(void){
  16         PrintAndLog("This command converts facility code/card number to Wiegand code");
  17         PrintAndLog("Usage: lf hid wiegand [h] [OEM] [FC] [CN]");
  18
  19         PrintAndLog("Options:");
  20         PrintAndLog("       h             - This help");
  21         PrintAndLog("       OEM           - OEM number / site code");
  22         PrintAndLog("       FC            - facility code");
  23         PrintAndLog("       CN            - card number");
  24         PrintAndLog("Examples:");
  25         PrintAndLog("      lf hid wiegand 0 101 2001");
  26         return 0;
  27 }
  28 int usage_lf_hid_sim(void){
  29         PrintAndLog("HID Tag simulator");
  30         PrintAndLog("");
  31         PrintAndLog("Usage:  lf hid sim [h] [ID]");
  32         PrintAndLog("Options:");
  33         PrintAndLog("       h   - This help");
  34         PrintAndLog("       ID  - HID id");
  35         PrintAndLog("Examples:");
  36         PrintAndLog("      lf hid sim 224");
  37         return 0;
  38 }
  39 int usage_lf_hid_clone(void){
  40         PrintAndLog("Clone HID to T55x7.  Tag must be on antenna. ");
  41         PrintAndLog("");
  42         PrintAndLog("Usage:  lf hid clone [h] [ID] <L>");
  43         PrintAndLog("Options:");
  44         PrintAndLog("       h   - This help");
  45         PrintAndLog("       ID  - HID id");
  46         PrintAndLog("       L   - 84bit ID");
  47         PrintAndLog("Examples:");
  48         PrintAndLog("      lf hid clone 224");
  49         PrintAndLog("      lf hid clone 224 L");
  50         return 0;
  51 }
  52 int usage_lf_hid_brute(void){
  53         PrintAndLog("Enables bruteforce of HID readers with specified facility code.");
  54         PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
  55         PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
  56         PrintAndLog("");
  57         PrintAndLog("Usage:  lf hid brute [h] a <format> f <facility-code> c <cardnumber> d <delay>");
  58         PrintAndLog("Options :");
  59         PrintAndLog("       h                 :  This help");
  60         PrintAndLog("       a <format>        :  26|33|34|35|37|40|44|84");
  61         PrintAndLog("       f <facility-code> :  8-bit value HID facility code");
  62         PrintAndLog("       c <cardnumber>    :  (optional) cardnumber to start with, max 65535");
  63         PrintAndLog("       d <delay>         :  delay betweens attempts in ms. Default 1000ms");
  64         PrintAndLog("");
  65         PrintAndLog("Samples:");
  66         PrintAndLog("       lf hid brute a 26 f 224");
  67         PrintAndLog("       lf hid brute a 26 f 21 d 2000");
  68         PrintAndLog("       lf hid brute a 26 f 21 c 200 d 2000");
  69         return 0;
  70 }
  71
  72 static int sendPing(void){
  73         UsbCommand ping = {CMD_PING, {1, 2, 3}};
  74         SendCommand(&ping);
  75         SendCommand(&ping);
  76         SendCommand(&ping);
  77         clearCommandBuffer();
  78         UsbCommand resp;
  79         if (WaitForResponseTimeout(CMD_ACK, &resp, 1000))
  80                 return 0;
  81         return 1;
  82 }
  83 static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs){
  84
  85         PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
  86
  87         calcWiegand( fmtlen, fc, cn, bs);
  88
  89         uint64_t arg1 = bytebits_to_byte(bs,32);
  90         uint64_t arg2 = bytebits_to_byte(bs+32,32);
  91         UsbCommand c = {CMD_HID_SIM_TAG, {arg1, arg2, 0}};
  92         clearCommandBuffer();
  93         SendCommand(&c);
  94         msleep(delay);
  95         sendPing();
  96         return TRUE;
  97 }
  98
  99 int CmdHIDDemodFSK(const char *Cmd) {
 100         int findone = ( Cmd[0] == '1' ) ? 1 : 0;
 101         UsbCommand c = {CMD_HID_DEMOD_FSK, {findone, 0 , 0}};
 102         clearCommandBuffer();
 103         SendCommand(&c);
 104         return 0;
 105 }
 106
 107 int CmdHIDSim(const char *Cmd) {
 108         unsigned int hi = 0, lo = 0;
 109         int n = 0, i = 0;
 110
 111         uint8_t ctmp = param_getchar(Cmd, 0);
 112         if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_sim();
 113
 114         while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 115                 hi = (hi << 4) | (lo >> 28);
 116                 lo = (lo << 4) | (n & 0xf);
 117         }
 118
 119         PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
 120         PrintAndLog("Press pm3-button to abort simulation");
 121
 122         UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
 123         clearCommandBuffer();
 124         SendCommand(&c);
 125         return 0;
 126 }
 127
 128 int CmdHIDClone(const char *Cmd) {
 129
 130         uint32_t hi2 = 0, hi = 0, lo = 0;
 131         int n = 0, i = 0;
 132         UsbCommand c;
 133
 134         uint8_t ctmp = param_getchar(Cmd, 0);
 135         if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_clone();
 136
 137         if (strchr(Cmd,'l') != 0) {
 138                 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 139                         hi2 = (hi2 << 4) | (hi >> 28);
 140                         hi = (hi << 4) | (lo >> 28);
 141                         lo = (lo << 4) | (n & 0xf);
 142                 }
 143
 144                 PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
 145
 146                 c.d.asBytes[0] = 1;
 147         } else {
 148                 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 149                         hi = (hi << 4) | (lo >> 28);
 150                         lo = (lo << 4) | (n & 0xf);
 151                 }
 152
 153                 PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
 154
 155                 hi2 = 0;
 156                 c.d.asBytes[0] = 0;
 157         }
 158
 159         c.cmd = CMD_HID_CLONE_TAG;
 160         c.arg[0] = hi2;
 161         c.arg[1] = hi;
 162         c.arg[2] = lo;
 163
 164         clearCommandBuffer();
 165         SendCommand(&c);
 166         return 0;
 167 }
 168 // struct to handle wiegand
 169 typedef struct {
 170         uint8_t  FormatLen;
 171         uint8_t  SiteCode;
 172         uint8_t  FacilityCode;
 173         uint8_t  CardNumber;
 174         uint8_t* Wiegand;
 175         size_t   Wiegand_n;
 176  } wiegand_t;
 177
 178 static void addHIDMarker(uint8_t fmtlen, uint8_t *out) {
 179
 180         switch(fmtlen) {
 181                 case 26:
 182                            //*out |= (1 << 26); // why this?
 183                            //*out |= (1 << 37);  // bit format for hid?
 184                         break;
 185                 case 34:
 186                                 // set bit format for less than 37 bit format
 187                                 // 5+32= 1
 188                                 //*hi = (1 << 5) | (fc >> 15);
 189                         break;
 190                 default:break;
 191         }
 192 }
 193
 194 // static void getParity34(uint32_t *hi, uint32_t *lo){
 195         // uint32_t result = 0;
 196         // int i;
 197
 198         // // even parity
 199         // for (i = 7;i >= 0;i--)
 200                 // result ^= (*hi >> i) & i;
 201         // for (i = 31;i >= 24;i--)
 202                 // result ^= (*lo >> i) & 1;
 203
 204         // *hi |= result << 2;
 205
 206         // // odd parity bit
 207         // result = 0;
 208         // for (i = 23;i >= 1;i--)
 209                 // result ^= (*lo >> i) & 1;
 210
 211         // *lo |= !result;
 212 // }
 213 // static void getParity37H(uint32_t *hi, uint32_t *lo){
 214         // uint32_t result = 0;
 215         // int i;
 216
 217         // // even parity
 218         // for (i = 4;i >= 0;i--)
 219                 // result ^= (*hi >> i) & 1;
 220         // for (i = 31;i >= 20;i--)
 221                 // result ^= (*lo >> i) & 1;
 222         // *hi |= result << 4;
 223
 224         // // odd parity
 225         // result = 0;
 226         // for (i = 19;i >= 1;i--)
 227                 // result ^= (*lo >> i) & 1;
 228         // *lo |= result;
 229 // }
 230
 231 //static void calc26(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
 232 static void calc26(uint16_t fc, uint32_t cardno, uint8_t *out){
 233         uint8_t wiegand[24];
 234         num_to_bytebits(fc, 8, wiegand);
 235         num_to_bytebits(cardno, 16, wiegand+8);
 236         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 237 }
 238 // static void calc33(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
 239 // }
 240 static void calc34(uint16_t fc, uint32_t cardno, uint8_t *out){
 241         uint8_t wiegand[32];
 242         num_to_bytebits(fc, 16, wiegand);
 243         num_to_bytebits(cardno, 16, wiegand + 16);
 244         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 245 }
 246 // static void calc35(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
 247         // *lo = ((cardno & 0xFFFFF) << 1) | fc << 21;
 248         // *hi = (1 << 5) | ((fc >> 11) & 1);
 249 // }
 250 static void calc37S(uint16_t fc, uint32_t cardno, uint8_t *out){
 251         // FC 2 - 17   - 16 bit
 252         // cardno 18 - 36  - 19 bit
 253         // Even P1   1 - 19
 254         // Odd  P37  19 - 36
 255         uint8_t wiegand[35];
 256         num_to_bytebits(fc, 16, wiegand);
 257         num_to_bytebits(cardno, 19, wiegand + 16);
 258         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 259 }
 260 static void calc37H(uint64_t cardno, uint8_t *out){
 261         // SC NONE
 262         // cardno 1-35 34 bits
 263         // Even Parity  0th bit  1-18
 264         // Odd  Parity 36th bit 19-35
 265         uint8_t wiegand[37];
 266         num_to_bytebits( (uint32_t)(cardno >> 32), 2, wiegand);
 267         num_to_bytebits( (uint32_t)(cardno >> 0), 32, wiegand + 2);
 268         wiegand_add_parity(out,  wiegand, sizeof(wiegand) );
 269
 270         printf("%x %x\n", (uint32_t)(cardno >> 32), (uint32_t)cardno );
 271 }
 272 // static void calc40(uint64_t cardno, uint32_t *hi, uint32_t *lo){
 273         // cardno = (cardno & 0xFFFFFFFFFF);
 274         // *lo = ((cardno & 0xFFFFFFFF) << 1 );
 275         // *hi = (cardno >> 31);
 276 // }
 277
 278 void calcWiegand(uint8_t fmtlen, uint16_t fc, uint64_t cardno, uint8_t *bits){
 279
 280         // uint32_t hi = 0, lo = 0;
 281          uint32_t cn32 = (cardno & 0xFFFFFFFF);
 282          switch ( fmtlen ) {
 283                 case 26 : {
 284                         calc26(fc, cn32, bits);
 285                         //addHIDFormatMarker(fmtlen, bits);
 286                         break;
 287                 }
 288                 // case 33 : {
 289                         // // calc33(fc, cn32, hi, lo);
 290                         // // getParity33(hi, lo);
 291                         // break;
 292                 // }
 293                 case 34 : {
 294                         calc34(fc, cn32, bits);
 295                         //addHIDFormatMarker(fmtlen, bits);
 296                         break;
 297                 }
 298                 // case 35 : {
 299                         // calc35(fc, cn32, hi, lo);
 300                         // getParity35(hi, lo);
 301                         // break;
 302                 // }
 303                 case 37 : {
 304                         calc37S(fc, cn32, bits);
 305                         //addHIDFormatMarker(fmtlen, bits);
 306                         break;
 307                 }
 308                 case 38 : {
 309                         calc37H(cardno, bits);
 310                         break;
 311                 }
 312                 // case 40 : calc40(cardno, hi, lo);    break;
 313                 // case 44 : { break; }
 314                 // case 84 : { break; }
 315                 default: break;
 316         }
 317 }
 318
 319 int CmdHIDWiegand(const char *Cmd) {
 320         uint32_t oem = 0, fc = 0;
 321         uint64_t cardnum = 0;
 322         uint64_t blocks = 0, wiegand = 0;
 323
 324         uint8_t bits[96];
 325         uint8_t *bs = bits;
 326         memset(bs, 0, sizeof(bits));
 327
 328         uint8_t ctmp = param_getchar(Cmd, 0);
 329         if ( strlen(Cmd) == 0 || strlen(Cmd) < 3 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_hid_wiegand();
 330
 331         oem = param_get8(Cmd, 0);
 332         fc = param_get32ex(Cmd, 1, 0, 10);
 333         cardnum = param_get64ex(Cmd, 2, 0, 10);
 334
 335         uint8_t fmtlen[] = {26,33,34,35,37,38,40};
 336
 337         PrintAndLog("HID | OEM | FC   | CN      |  Wiegand  |  HID Formatted");
 338         PrintAndLog("----+-----+------+---------+-----------+--------------------");
 339         for (uint8_t i = 0; i < sizeof(fmtlen); i++){
 340                 memset(bits, 0x00, sizeof(bits));
 341                 calcWiegand( fmtlen[i], fc, cardnum, bs);
 342                 wiegand = (uint64_t)bytebits_to_byte(bs, 32) << 32 | bytebits_to_byte(bs+32, 32);
 343                 blocks = (uint64_t)bytebits_to_byte(bs, 32) << 32 | bytebits_to_byte(bs+32, 32);
 344                 uint8_t shifts = 64-fmtlen[i];
 345                 wiegand >>= shifts;
 346
 347                 PrintAndLog(" %u | %03u | %03u  | %llu  | %llX  |  %llX",
 348                         fmtlen[i],
 349                         oem,
 350                         fc,
 351                         cardnum,
 352                         wiegand,
 353                         blocks
 354                         );
 355         }
 356         PrintAndLog("----+-----+-----+-------+-----------+--------------------");
 357         return 0;
 358 }
 359
 360 int CmdHIDBrute(const char *Cmd){
 361
 362         bool errors = false;
 363         uint32_t fc = 0, cn = 0, delay = 1000;
 364         uint8_t fmtlen = 0;
 365         uint8_t bits[96];
 366         uint8_t *bs = bits;
 367         memset(bs, 0, sizeof(bits));
 368         uint8_t cmdp = 0;
 369
 370         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 371                 switch(param_getchar(Cmd, cmdp)) {
 372                 case 'h':
 373                 case 'H':
 374                         return usage_lf_hid_brute();
 375                 case 'f':
 376                 case 'F':
 377                         fc =  param_get32ex(Cmd ,cmdp+1, 0, 10);
 378                         if ( !fc )
 379                                 errors = true;
 380                         cmdp += 2;
 381                         break;
 382                 case 'd':
 383                 case 'D':
 384                         // delay between attemps,  defaults to 1000ms.
 385                         delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
 386                         cmdp += 2;
 387                         break;
 388                 case 'c':
 389                 case 'C':
 390                         cn = param_get32ex(Cmd, cmdp+1, 0, 10);
 391                         // truncate cardnumber.
 392                         cn &= 0xFFFF;
 393                         cmdp += 2;
 394                         break;
 395                 case 'a':
 396                 case 'A':
 397                         fmtlen = param_get8(Cmd, cmdp+1);
 398                         cmdp += 2;
 399                         bool is_ftm_ok = FALSE;
 400                         uint8_t ftms[] = {26,33,34,35,37};
 401                         for ( uint8_t i = 0; i < sizeof(ftms); i++){
 402                                 if ( ftms[i] == fmtlen ) {
 403                                         is_ftm_ok = TRUE;
 404                                 }
 405                         }
 406                         // negated
 407                         errors = !is_ftm_ok;
 408                         break;
 409                 default:
 410                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 411                         errors = true;
 412                         break;
 413                 }
 414         }
 415         if ( fc == 0 ) errors = true;
 416         if ( errors ) return usage_lf_hid_brute();
 417
 418         PrintAndLog("Brute-forcing HID reader");
 419         PrintAndLog("Press pm3-button to abort simulation or run another command");
 420
 421         uint16_t up = cn;
 422         uint16_t down = cn;
 423
 424         for (;;){
 425
 426                 if ( offline ) {
 427                         printf("Device offline\n");
 428                         return  2;
 429                 }
 430
 431                 if (ukbhit()) {
 432                         PrintAndLog("aborted via keyboard!");
 433                         return sendPing();
 434                 }
 435
 436                 // Do one up
 437                 if ( up < 0xFFFF )
 438                         if ( !sendTry(fmtlen, fc, up++, delay, bs)) return 1;
 439
 440                 // Do one down  (if cardnumber is given)
 441                 if ( cn > 1 )
 442                         if ( down > 1 )
 443                                 if ( !sendTry(fmtlen, fc, --down, delay, bs)) return 1;
 444         }
 445         return 0;
 446 }
 447
 448 static command_t CommandTable[] = {
 449         {"help",    CmdHelp,        1, "This help"},
 450         {"fskdemod",CmdHIDDemodFSK, 0, "Realtime HID FSK demodulator"},
 451         {"sim",     CmdHIDSim,      0, "HID tag simulator"},
 452         {"clone",   CmdHIDClone,    0, "Clone HID to T55x7"},
 453         {"wiegand", CmdHIDWiegand,  1, "Convert facility code/card number to Wiegand code"},
 454         {"brute",   CmdHIDBrute,        0, "Bruteforce card number against reader"},
 455         {NULL, NULL, 0, NULL}
 456 };
 457
 458 int CmdLFHID(const char *Cmd) {
 459         clearCommandBuffer();
 460         CmdsParse(CommandTable, Cmd);
 461         return 0;
 462 }
 463
 464 int CmdHelp(const char *Cmd) {
 465         CmdsHelp(CommandTable);
 466         return 0;
 467 }