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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 AWID26/50 commands | |
11 | //----------------------------------------------------------------------------- | |
12 | #include "cmdlfawid.h" // AWID function declarations | |
13 | ||
14 | static int CmdHelp(const char *Cmd); | |
15 | ||
16 | int usage_lf_awid_fskdemod(void) { | |
17 | PrintAndLog("Enables AWID compatible reader mode printing details of scanned AWID26 or AWID50 tags."); | |
18 | PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued."); | |
19 | PrintAndLog("If the [1] option is provided, reader mode is exited after reading a single AWID card."); | |
20 | PrintAndLog(""); | |
21 | PrintAndLog("Usage: lf awid fskdemod [h] [1]"); | |
22 | PrintAndLog("Options:"); | |
23 | PrintAndLog(" h : This help"); | |
24 | PrintAndLog(" 1 : (optional) stop after reading a single card"); | |
25 | PrintAndLog(""); | |
26 | PrintAndLog("Samples:"); | |
27 | PrintAndLog(" lf awid fskdemod"); | |
28 | PrintAndLog(" lf awid fskdemod 1"); | |
29 | return 0; | |
30 | } | |
31 | ||
32 | int usage_lf_awid_sim(void) { | |
33 | PrintAndLog("Enables simulation of AWID card with specified facility-code and card number."); | |
34 | PrintAndLog("Simulation runs until the button is pressed or another USB command is issued."); | |
35 | PrintAndLog(""); | |
36 | PrintAndLog("Usage: lf awid sim [h] <format> <facility-code> <card-number>"); | |
37 | PrintAndLog("Options:"); | |
38 | PrintAndLog(" h : This help"); | |
39 | PrintAndLog(" <format> : format length 26|50"); | |
40 | PrintAndLog(" <facility-code> : 8|16bit value facility code"); | |
41 | PrintAndLog(" <card number> : 16|32-bit value card number"); | |
42 | PrintAndLog(""); | |
43 | PrintAndLog("Samples:"); | |
44 | PrintAndLog(" lf awid sim 26 224 1337"); | |
45 | PrintAndLog(" lf awid sim 50 2001 13371337"); | |
46 | return 0; | |
47 | } | |
48 | ||
49 | int usage_lf_awid_clone(void) { | |
50 | PrintAndLog("Enables cloning of AWID card with specified facility-code and card number onto T55x7."); | |
51 | PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process."); | |
52 | PrintAndLog(""); | |
53 | PrintAndLog("Usage: lf awid clone [h] <format> <facility-code> <card-number> [Q5]"); | |
54 | PrintAndLog("Options:"); | |
55 | PrintAndLog(" h : This help"); | |
56 | PrintAndLog(" <format> : format length 26|50"); | |
57 | PrintAndLog(" <facility-code> : 8|16bit value facility code"); | |
58 | PrintAndLog(" <card number> : 16|32-bit value card number"); | |
59 | PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip"); | |
60 | PrintAndLog(""); | |
61 | PrintAndLog("Samples:"); | |
62 | PrintAndLog(" lf awid clone 26 224 1337"); | |
63 | PrintAndLog(" lf awid clone 50 2001 13371337"); | |
64 | return 0; | |
65 | } | |
66 | ||
67 | int usage_lf_awid_brute(void){ | |
68 | PrintAndLog("Enables bruteforce of AWID reader with specified facility-code."); | |
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"); | |
71 | PrintAndLog(""); | |
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"); | |
79 | PrintAndLog(""); | |
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"); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | static int sendPing(void){ | |
88 | UsbCommand ping = {CMD_PING, {1, 2, 3}}; | |
89 | SendCommand(&ping); | |
90 | SendCommand(&ping); | |
91 | SendCommand(&ping); | |
92 | ||
93 | clearCommandBuffer(); | |
94 | UsbCommand resp; | |
95 | if (WaitForResponseTimeout(CMD_ACK, &resp, 1000)) { | |
96 | return 0; | |
97 | } | |
98 | return 1; | |
99 | } | |
100 | ||
101 | static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs, size_t bs_len){ | |
102 | ||
103 | PrintAndLog("Trying FC: %u; CN: %u", fc, cn); | |
104 | if ( !getAWIDBits(fmtlen, fc, cn, bs)) { | |
105 | PrintAndLog("Error with tag bitstream generation."); | |
106 | return FALSE; | |
107 | } | |
108 | ||
109 | uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8 | |
110 | uint64_t arg2 = 50; // clk RF/50 invert=0 | |
111 | UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, bs_len}}; | |
112 | memcpy(c.d.asBytes, bs, bs_len); | |
113 | clearCommandBuffer(); | |
114 | SendCommand(&c); | |
115 | ||
116 | msleep(delay); | |
117 | sendPing(); | |
118 | return TRUE; | |
119 | } | |
120 | ||
121 | ||
122 | int CmdAWIDDemodFSK(const char *Cmd) { | |
123 | int findone = 0; | |
124 | if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod(); | |
125 | if (Cmd[0] == '1') findone = 1; | |
126 | ||
127 | UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}}; | |
128 | clearCommandBuffer(); | |
129 | SendCommand(&c); | |
130 | return 0; | |
131 | } | |
132 | ||
133 | //refactored by marshmellow | |
134 | int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) { | |
135 | ||
136 | // the return bits, preamble 0000 0001 | |
137 | bits[7] = 1; | |
138 | ||
139 | uint8_t pre[66]; | |
140 | memset(pre, 0, sizeof(pre)); | |
141 | ||
142 | // add formatlength | |
143 | num_to_bytebits(fmtlen, 8, pre); | |
144 | ||
145 | // add facilitycode, cardnumber and wiegand parity bits | |
146 | if ( fmtlen == 26 ) { | |
147 | uint8_t wiegand[24]; | |
148 | num_to_bytebits(fc, 8, wiegand); | |
149 | num_to_bytebits(cn, 16, wiegand+8); | |
150 | wiegand_add_parity(pre+8, wiegand, sizeof(wiegand)); | |
151 | } else { | |
152 | uint8_t wiegand[48]; | |
153 | num_to_bytebits(fc, 16, wiegand); | |
154 | num_to_bytebits(cn, 32, wiegand+16); | |
155 | wiegand_add_parity(pre+8, wiegand, sizeof(wiegand)); | |
156 | } | |
157 | ||
158 | // add AWID 4bit parity | |
159 | size_t bitLen = addParity(pre, bits+8, 66, 4, 1); | |
160 | ||
161 | if (bitLen != 88) return 0; | |
162 | return 1; | |
163 | } | |
164 | ||
165 | int CmdAWIDSim(const char *Cmd) { | |
166 | uint32_t fc = 0, cn = 0; | |
167 | uint8_t fmtlen = 0; | |
168 | uint8_t bits[96]; | |
169 | uint8_t *bs = bits; | |
170 | size_t size = sizeof(bits); | |
171 | memset(bs, 0x00, size); | |
172 | ||
173 | uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8 | |
174 | uint64_t arg2 = 50; // clk RF/50 invert=0 | |
175 | ||
176 | char cmdp = param_getchar(Cmd, 0); | |
177 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim(); | |
178 | ||
179 | fmtlen = param_get8(Cmd, 0); | |
180 | fc = param_get32ex(Cmd, 1, 0, 10); | |
181 | cn = param_get32ex(Cmd, 2, 0, 10); | |
182 | if ( !fc || !cn) return usage_lf_awid_sim(); | |
183 | ||
184 | switch(fmtlen) { | |
185 | case 26: | |
186 | if ((fc & 0xFF) != fc) { | |
187 | fc &= 0xFF; | |
188 | PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc); | |
189 | } | |
190 | ||
191 | if ((cn & 0xFFFF) != cn) { | |
192 | cn &= 0xFFFF; | |
193 | PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn); | |
194 | } | |
195 | break; | |
196 | case 50: | |
197 | if ((fc & 0xFFFF) != fc) { | |
198 | fc &= 0xFFFF; | |
199 | PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc); | |
200 | } | |
201 | break; | |
202 | default: break; | |
203 | } | |
204 | ||
205 | PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn); | |
206 | PrintAndLog("Press pm3-button to abort simulation or run another command"); | |
207 | ||
208 | if (!getAWIDBits(fmtlen, fc, cn, bs)) { | |
209 | PrintAndLog("Error with tag bitstream generation."); | |
210 | return 1; | |
211 | } | |
212 | // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0 | |
213 | // arg1 --- fcHigh<<8 + fcLow | |
214 | // arg2 --- Inversion and clk setting | |
215 | // 96 --- Bitstream length: 96-bits == 12 bytes | |
216 | UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}}; | |
217 | memcpy(c.d.asBytes, bs, size); | |
218 | clearCommandBuffer(); | |
219 | SendCommand(&c); | |
220 | return 0; | |
221 | } | |
222 | ||
223 | int CmdAWIDClone(const char *Cmd) { | |
224 | uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0}; | |
225 | uint32_t fc = 0, cn = 0; | |
226 | uint8_t fmtlen = 0; | |
227 | uint8_t bits[96]; | |
228 | uint8_t *bs=bits; | |
229 | memset(bs,0,sizeof(bits)); | |
230 | ||
231 | char cmdp = param_getchar(Cmd, 0); | |
232 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone(); | |
233 | ||
234 | fmtlen = param_get8(Cmd, 0); | |
235 | fc = param_get32ex(Cmd, 1, 0, 10); | |
236 | cn = param_get32ex(Cmd, 2, 0, 10); | |
237 | ||
238 | if ( !fc || !cn) return usage_lf_awid_clone(); | |
239 | ||
240 | switch(fmtlen) { | |
241 | case 50: | |
242 | if ((fc & 0xFFFF) != fc) { | |
243 | fc &= 0xFFFF; | |
244 | PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", fc); | |
245 | } | |
246 | break; | |
247 | default: | |
248 | fmtlen = 26; | |
249 | if ((fc & 0xFF) != fc) { | |
250 | fc &= 0xFF; | |
251 | PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc); | |
252 | } | |
253 | ||
254 | if ((cn & 0xFFFF) != cn) { | |
255 | cn &= 0xFFFF; | |
256 | PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn); | |
257 | } | |
258 | break; | |
259 | } | |
260 | ||
261 | if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q') | |
262 | //t5555 (Q5) BITRATE = (RF-2)/2 (iceman) | |
263 | blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT; | |
264 | ||
265 | if ( !getAWIDBits(fmtlen, fc, cn, bs)) { | |
266 | PrintAndLog("Error with tag bitstream generation."); | |
267 | return 1; | |
268 | } | |
269 | ||
270 | blocks[1] = bytebits_to_byte(bs,32); | |
271 | blocks[2] = bytebits_to_byte(bs+32,32); | |
272 | blocks[3] = bytebits_to_byte(bs+64,32); | |
273 | ||
274 | PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn); | |
275 | PrintAndLog("Blk | Data "); | |
276 | PrintAndLog("----+------------"); | |
277 | PrintAndLog(" 00 | 0x%08x", blocks[0]); | |
278 | PrintAndLog(" 01 | 0x%08x", blocks[1]); | |
279 | PrintAndLog(" 02 | 0x%08x", blocks[2]); | |
280 | PrintAndLog(" 03 | 0x%08x", blocks[3]); | |
281 | ||
282 | UsbCommand resp; | |
283 | UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; | |
284 | ||
285 | for (uint8_t i=0; i<4; i++) { | |
286 | c.arg[0] = blocks[i]; | |
287 | c.arg[1] = i; | |
288 | clearCommandBuffer(); | |
289 | SendCommand(&c); | |
290 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)){ | |
291 | PrintAndLog("Error occurred, device did not respond during write operation."); | |
292 | return -1; | |
293 | } | |
294 | } | |
295 | return 0; | |
296 | } | |
297 | ||
298 | int CmdAWIDBrute(const char *Cmd){ | |
299 | ||
300 | bool errors = false; | |
301 | uint32_t fc = 0, cn = 0, delay = 1000; | |
302 | uint8_t fmtlen = 0; | |
303 | uint8_t bits[96]; | |
304 | uint8_t *bs = bits; | |
305 | size_t size = sizeof(bits); | |
306 | memset(bs, 0x00, size); | |
307 | uint8_t cmdp = 0; | |
308 | ||
309 | while(param_getchar(Cmd, cmdp) != 0x00 && !errors) { | |
310 | switch(param_getchar(Cmd, cmdp)) { | |
311 | case 'h': | |
312 | case 'H': | |
313 | return usage_lf_awid_brute(); | |
314 | case 'f': | |
315 | case 'F': | |
316 | fc = param_get32ex(Cmd ,cmdp+1, 0, 10); | |
317 | if ( !fc ) | |
318 | errors = true; | |
319 | cmdp += 2; | |
320 | break; | |
321 | case 'd': | |
322 | case 'D': | |
323 | // delay between attemps, defaults to 1000ms. | |
324 | delay = param_get32ex(Cmd, cmdp+1, 1000, 10); | |
325 | cmdp += 2; | |
326 | break; | |
327 | case 'c': | |
328 | case 'C': | |
329 | cn = param_get32ex(Cmd, cmdp+1, 0, 10); | |
330 | // truncate cardnumber. | |
331 | cn &= 0xFFFF; | |
332 | cmdp += 2; | |
333 | break; | |
334 | case 'a': | |
335 | case 'A': | |
336 | fmtlen = param_get8(Cmd, cmdp+1); | |
337 | cmdp += 2; | |
338 | break; | |
339 | default: | |
340 | PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); | |
341 | errors = true; | |
342 | break; | |
343 | } | |
344 | } | |
345 | if ( fc == 0 )errors = true; | |
346 | if ( errors ) return usage_lf_awid_brute(); | |
347 | ||
348 | // limit fc according to selected format | |
349 | switch(fmtlen) { | |
350 | case 50: | |
351 | if ((fc & 0xFFFF) != fc) { | |
352 | fc &= 0xFFFF; | |
353 | PrintAndLog("Facility-code truncated to 16-bits (AWID50): %u", fc); | |
354 | } | |
355 | break; | |
356 | default: | |
357 | if ((fc & 0xFF) != fc) { | |
358 | fc &= 0xFF; | |
359 | PrintAndLog("Facility-code truncated to 8-bits (AWID26): %u", fc); | |
360 | } | |
361 | break; | |
362 | } | |
363 | ||
364 | // start | |
365 | ||
366 | PrintAndLog("Bruteforceing AWID %d Reader", fmtlen); | |
367 | PrintAndLog("Press pm3-button to abort simulation or press key"); | |
368 | ||
369 | uint16_t up = cn; | |
370 | uint16_t down = cn; | |
371 | ||
372 | for (;;){ | |
373 | ||
374 | if ( offline ) { | |
375 | printf("Device offline\n"); | |
376 | return 2; | |
377 | } | |
378 | ||
379 | if (ukbhit()) return sendPing(); | |
380 | ||
381 | // Do one up | |
382 | if ( up < 0xFFFF ) | |
383 | if ( !sendTry(fmtlen, fc, up++, delay, bs, size)) return 1; | |
384 | ||
385 | // Do one down (if cardnumber is given) | |
386 | if ( cn > 1 ) | |
387 | if ( down > 1 ) | |
388 | if ( !sendTry(fmtlen, fc, --down, delay, bs, size)) return 1; | |
389 | } | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static command_t CommandTable[] = { | |
394 | {"help", CmdHelp, 1, "This help"}, | |
395 | {"fskdemod", CmdAWIDDemodFSK, 0, "Realtime AWID FSK demodulator"}, | |
396 | {"sim", CmdAWIDSim, 0, "AWID tag simulator"}, | |
397 | {"clone", CmdAWIDClone, 0, "Clone AWID to T55x7"}, | |
398 | {"brute", CmdAWIDBrute, 0, "Bruteforce card number against reader"}, | |
399 | {NULL, NULL, 0, NULL} | |
400 | }; | |
401 | ||
402 | int CmdLFAWID(const char *Cmd) { | |
403 | clearCommandBuffer(); | |
404 | CmdsParse(CommandTable, Cmd); | |
405 | return 0; | |
406 | } | |
407 | ||
408 | int CmdHelp(const char *Cmd) { | |
409 | CmdsHelp(CommandTable); | |
410 | return 0; | |
411 | } |