]> git.zerfleddert.de Git - proxmark3-svn/blame - client/cmdlfawid.c
FIX: at least now the special zero parity attack, repeats and doesn't crash. Howev...
[proxmark3-svn] / client / cmdlfawid.c
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db25599d 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//-----------------------------------------------------------------------------
f5291a6c 10// Low frequency AWID26/50 commands
db25599d 11//-----------------------------------------------------------------------------
db25599d 12#include "cmdlfawid.h" // AWID function declarations
508b37ba 13
db25599d 14static int CmdHelp(const char *Cmd);
15
db25599d 16int usage_lf_awid_fskdemod(void) {
8fd9bfb0 17 PrintAndLog("Enables AWID compatible reader mode printing details of scanned AWID26 or AWID50 tags.");
a126332a 18 PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
8fd9bfb0 19 PrintAndLog("If the [1] option is provided, reader mode is exited after reading a single AWID card.");
a126332a 20 PrintAndLog("");
890ae3dd 21 PrintAndLog("Usage: lf awid fskdemod [h] [1]");
10c4231e 22 PrintAndLog("Options:");
890ae3dd 23 PrintAndLog(" h : This help");
8fd9bfb0 24 PrintAndLog(" 1 : (optional) stop after reading a single card");
a126332a 25 PrintAndLog("");
10c4231e 26 PrintAndLog("Samples:");
27 PrintAndLog(" lf awid fskdemod");
28 PrintAndLog(" lf awid fskdemod 1");
a126332a 29 return 0;
db25599d 30}
31
32int usage_lf_awid_sim(void) {
8fd9bfb0 33 PrintAndLog("Enables simulation of AWID card with specified facility-code and card number.");
a126332a 34 PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
a126332a 35 PrintAndLog("");
890ae3dd 36 PrintAndLog("Usage: lf awid sim [h] <format> <facility-code> <card-number>");
10c4231e 37 PrintAndLog("Options:");
890ae3dd 38 PrintAndLog(" h : This help");
39 PrintAndLog(" <format> : format length 26|50");
8fd9bfb0 40 PrintAndLog(" <facility-code> : 8|16bit value facility code");
890ae3dd 41 PrintAndLog(" <card number> : 16|32-bit value card number");
a126332a 42 PrintAndLog("");
10c4231e 43 PrintAndLog("Samples:");
8fd9bfb0 44 PrintAndLog(" lf awid sim 26 224 1337");
45 PrintAndLog(" lf awid sim 50 2001 13371337");
a126332a 46 return 0;
db25599d 47}
48
49int usage_lf_awid_clone(void) {
8fd9bfb0 50 PrintAndLog("Enables cloning of AWID card with specified facility-code and card number onto T55x7.");
a126332a 51 PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process.");
a126332a 52 PrintAndLog("");
890ae3dd 53 PrintAndLog("Usage: lf awid clone [h] <format> <facility-code> <card-number> [Q5]");
10c4231e 54 PrintAndLog("Options:");
890ae3dd 55 PrintAndLog(" h : This help");
56 PrintAndLog(" <format> : format length 26|50");
8fd9bfb0 57 PrintAndLog(" <facility-code> : 8|16bit value facility code");
890ae3dd 58 PrintAndLog(" <card number> : 16|32-bit value card number");
59 PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip");
a126332a 60 PrintAndLog("");
10c4231e 61 PrintAndLog("Samples:");
8fd9bfb0 62 PrintAndLog(" lf awid clone 26 224 1337");
63 PrintAndLog(" lf awid clone 50 2001 13371337");
a126332a 64 return 0;
db25599d 65}
66
508b37ba 67int usage_lf_awid_brute(void){
8fd9bfb0 68 PrintAndLog("Enables bruteforce of AWID reader with specified facility-code.");
10c4231e 69 PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
70 PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
508b37ba 71 PrintAndLog("");
10c4231e 72 PrintAndLog("Usage: lf awid brute [h] a <format> f <facility-code> c <cardnumber> d <delay>");
73 PrintAndLog("Options:");
74 PrintAndLog(" h : This help");
75 PrintAndLog(" a <format> : format length 26|50");
76 PrintAndLog(" f <facility-code> : 8|16bit value facility code");
77 PrintAndLog(" c <cardnumber> : (optional) cardnumber to start with, max 65535");
78 PrintAndLog(" d <delay> : delay betweens attempts in ms. Default 1000ms");
508b37ba 79 PrintAndLog("");
10c4231e 80 PrintAndLog("Samples:");
81 PrintAndLog(" lf awid brute a 26 f 224");
82 PrintAndLog(" lf awid brute a 50 f 2001 d 2000");
83 PrintAndLog(" lf awid brute a 50 f 2001 c 200 d 2000");
508b37ba 84 return 0;
85}
86
05442fa6 87static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs, size_t bs_len){
10c4231e 88
89 PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
90 if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
91 PrintAndLog("Error with tag bitstream generation.");
92 return FALSE;
93 }
94
95 uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
96 uint64_t arg2 = 50; // clk RF/50 invert=0
97 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, bs_len}};
98 memcpy(c.d.asBytes, bs, bs_len);
99 clearCommandBuffer();
100 SendCommand(&c);
101 msleep(delay);
102 return TRUE;
103}
104static int sendPing(){
105 UsbCommand resp;
106 UsbCommand ping = {CMD_PING};
107 clearCommandBuffer();
108 SendCommand(&ping);
109 if (WaitForResponseTimeout(CMD_ACK, &resp, 1000)) {
110 PrintAndLog("aborted via keyboard!");
111 return 0;
112 }
113 PrintAndLog("Device didnt respond to ABORT");
114 return 1;
115}
116
52f2df61 117int CmdAWIDDemodFSK(const char *Cmd) {
a126332a 118 int findone = 0;
119 if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
120 if (Cmd[0] == '1') findone = 1;
121
122 UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
123 clearCommandBuffer();
124 SendCommand(&c);
125 return 0;
db25599d 126}
127
a126332a 128//refactored by marshmellow
8fd9bfb0 129int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
130
131 // the return bits, preamble 0000 0001
132 bits[7] = 1;
133
a126332a 134 uint8_t pre[66];
135 memset(pre, 0, sizeof(pre));
52f2df61 136
8fd9bfb0 137 // add formatlength
138 num_to_bytebits(fmtlen, 8, pre);
139
140 // add facilitycode, cardnumber and wiegand parity bits
141 if ( fmtlen == 26 ) {
142 uint8_t wiegand[24];
143 num_to_bytebits(fc, 8, wiegand);
144 num_to_bytebits(cn, 16, wiegand+8);
145 wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
146 } else {
147 uint8_t wiegand[48];
148 num_to_bytebits(fc, 16, wiegand);
149 num_to_bytebits(cn, 32, wiegand+16);
150 wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
151 }
152
153 // add AWID 4bit parity
154 size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
fcb1cdba 155
a126332a 156 if (bitLen != 88) return 0;
52f2df61 157 return 1;
db25599d 158}
159
a126332a 160int CmdAWIDSim(const char *Cmd) {
8fd9bfb0 161 uint32_t fc = 0, cn = 0;
162 uint8_t fmtlen = 0;
a126332a 163 uint8_t bits[96];
164 uint8_t *bs = bits;
165 size_t size = sizeof(bits);
fcb1cdba 166 memset(bs, 0x00, size);
52f2df61 167
fcb1cdba 168 uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
52f2df61 169 uint64_t arg2 = 50; // clk RF/50 invert=0
170
8fd9bfb0 171 char cmdp = param_getchar(Cmd, 0);
172 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
52f2df61 173
8fd9bfb0 174 fmtlen = param_get8(Cmd, 0);
175 fc = param_get32ex(Cmd, 1, 0, 10);
176 cn = param_get32ex(Cmd, 2, 0, 10);
177 if ( !fc || !cn) return usage_lf_awid_sim();
52f2df61 178
8fd9bfb0 179 switch(fmtlen) {
180 case 26:
181 if ((fc & 0xFF) != fc) {
182 fc &= 0xFF;
183 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
184 }
185
186 if ((cn & 0xFFFF) != cn) {
187 cn &= 0xFFFF;
188 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
189 }
190 break;
191 case 50:
192 if ((fc & 0xFFFF) != fc) {
193 fc &= 0xFFFF;
194 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
195 }
196 break;
197 default: break;
198 }
199
200 PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
52f2df61 201 PrintAndLog("Press pm3-button to abort simulation or run another command");
202
8fd9bfb0 203 if (!getAWIDBits(fmtlen, fc, cn, bs)) {
52f2df61 204 PrintAndLog("Error with tag bitstream generation.");
205 return 1;
206 }
207 // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
52f2df61 208 // arg1 --- fcHigh<<8 + fcLow
209 // arg2 --- Inversion and clk setting
210 // 96 --- Bitstream length: 96-bits == 12 bytes
a126332a 211 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
212 memcpy(c.d.asBytes, bs, size);
52f2df61 213 clearCommandBuffer();
214 SendCommand(&c);
215 return 0;
db25599d 216}
217
a126332a 218int CmdAWIDClone(const char *Cmd) {
219 uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
8fd9bfb0 220 uint32_t fc = 0, cn = 0;
221 uint8_t fmtlen = 0;
a126332a 222 uint8_t bits[96];
52f2df61 223 uint8_t *bs=bits;
a126332a 224 memset(bs,0,sizeof(bits));
52f2df61 225
8fd9bfb0 226 char cmdp = param_getchar(Cmd, 0);
227 if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
f3cfe428 228
8fd9bfb0 229 fmtlen = param_get8(Cmd, 0);
230 fc = param_get32ex(Cmd, 1, 0, 10);
231 cn = param_get32ex(Cmd, 2, 0, 10);
a126332a 232
8fd9bfb0 233 if ( !fc || !cn) return usage_lf_awid_clone();
234
235 switch(fmtlen) {
236 case 50:
237 if ((fc & 0xFFFF) != fc) {
238 fc &= 0xFFFF;
239 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc);
240 }
241 break;
242 default:
243 fmtlen = 26;
244 if ((fc & 0xFF) != fc) {
245 fc &= 0xFF;
246 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
247 }
f3cfe428 248
8fd9bfb0 249 if ((cn & 0xFFFF) != cn) {
250 cn &= 0xFFFF;
251 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
252 }
253 break;
f3cfe428 254 }
52f2df61 255
8fd9bfb0 256 if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q')
890ae3dd 257 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
8fd9bfb0 258 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
259
260 if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
52f2df61 261 PrintAndLog("Error with tag bitstream generation.");
262 return 1;
263 }
264
a126332a 265 blocks[1] = bytebits_to_byte(bs,32);
266 blocks[2] = bytebits_to_byte(bs+32,32);
267 blocks[3] = bytebits_to_byte(bs+64,32);
52f2df61 268
8fd9bfb0 269 PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
52f2df61 270 PrintAndLog("Blk | Data ");
271 PrintAndLog("----+------------");
272 PrintAndLog(" 00 | 0x%08x", blocks[0]);
273 PrintAndLog(" 01 | 0x%08x", blocks[1]);
274 PrintAndLog(" 02 | 0x%08x", blocks[2]);
275 PrintAndLog(" 03 | 0x%08x", blocks[3]);
276
277 UsbCommand resp;
278 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
f3cfe428 279
a126332a 280 for (uint8_t i=0; i<4; i++) {
52f2df61 281 c.arg[0] = blocks[i];
282 c.arg[1] = i;
283 clearCommandBuffer();
284 SendCommand(&c);
26922aef 285 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)){
52f2df61 286 PrintAndLog("Error occurred, device did not respond during write operation.");
287 return -1;
f3cfe428 288 }
289 }
290 return 0;
db25599d 291}
292
508b37ba 293int CmdAWIDBrute(const char *Cmd){
294
10c4231e 295 bool errors = false;
296 uint32_t fc = 0, cn = 0, delay = 1000;
8fd9bfb0 297 uint8_t fmtlen = 0;
508b37ba 298 uint8_t bits[96];
299 uint8_t *bs = bits;
300 size_t size = sizeof(bits);
301 memset(bs, 0x00, size);
10c4231e 302 uint8_t cmdp = 0;
934dfd72 303
10c4231e 304 while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
305 switch(param_getchar(Cmd, cmdp)) {
306 case 'h':
307 case 'H':
308 return usage_lf_awid_brute();
309 case 'f':
310 case 'F':
311 fc = param_get32ex(Cmd ,cmdp+1, 0, 10);
312 if ( !fc )
313 errors = true;
314 cmdp += 2;
315 break;
316 case 'd':
317 case 'D':
318 // delay between attemps, defaults to 1000ms.
319 delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
320 cmdp += 2;
321 break;
322 case 'c':
323 case 'C':
324 cn = param_get32ex(Cmd, cmdp+1, 0, 10);
325 // truncate cardnumber.
326 cn &= 0xFFFF;
327 cmdp += 2;
328 break;
329 case 'a':
330 case 'A':
331 fmtlen = param_get8(Cmd, cmdp+1);
332 cmdp += 2;
333 break;
334 default:
335 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
336 errors = true;
337 break;
338 }
339 }
340 if ( fc == 0 )errors = true;
341 if ( errors ) return usage_lf_awid_brute();
342
343 // limit fc according to selected format
8fd9bfb0 344 switch(fmtlen) {
345 case 50:
346 if ((fc & 0xFFFF) != fc) {
347 fc &= 0xFFFF;
10c4231e 348 PrintAndLog("Facility-code truncated to 16-bits (AWID50): %u", fc);
8fd9bfb0 349 }
350 break;
351 default:
352 if ((fc & 0xFF) != fc) {
353 fc &= 0xFF;
10c4231e 354 PrintAndLog("Facility-code truncated to 8-bits (AWID26): %u", fc);
8fd9bfb0 355 }
356 break;
357 }
508b37ba 358
10c4231e 359 // start
360
8fd9bfb0 361 PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
934dfd72 362 PrintAndLog("Press pm3-button to abort simulation or press key");
508b37ba 363
10c4231e 364 uint16_t up = cn;
365 uint16_t down = cn;
366
367 for (;;){
368
369 if (ukbhit()) return sendPing();
370
371 // Do one up
372 if ( up < 0xFFFF )
373 if ( !sendTry(fmtlen, fc, up++, delay, bs, size)) return 1;
508b37ba 374
10c4231e 375 // Do one down (if cardnumber is given)
376 if ( cn > 1 )
377 if ( down > 0 )
378 if ( !sendTry(fmtlen, fc, --down, delay, bs, size)) return 1;
508b37ba 379 }
380 return 0;
381}
382
a126332a 383static command_t CommandTable[] = {
f3cfe428 384 {"help", CmdHelp, 1, "This help"},
10c4231e 385 {"fskdemod", CmdAWIDDemodFSK, 0, "Realtime AWID FSK demodulator"},
386 {"sim", CmdAWIDSim, 0, "AWID tag simulator"},
387 {"clone", CmdAWIDClone, 0, "Clone AWID to T55x7"},
388 {"brute", CmdAWIDBrute, 0, "Bruteforce card number against reader"},
f3cfe428 389 {NULL, NULL, 0, NULL}
db25599d 390};
391
a126332a 392int CmdLFAWID(const char *Cmd) {
4c36581b 393 clearCommandBuffer();
f3cfe428 394 CmdsParse(CommandTable, Cmd);
395 return 0;
db25599d 396}
397
a126332a 398int CmdHelp(const char *Cmd) {
f3cfe428 399 CmdsHelp(CommandTable);
400 return 0;
db25599d 401}
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