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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 | // High frequency Legic commands | |
9 | //----------------------------------------------------------------------------- | |
10 | #include "cmdhflegic.h" | |
11 | ||
12 | static int CmdHelp(const char *Cmd); | |
13 | ||
14 | #define MAX_LENGTH 1024 | |
15 | ||
16 | int usage_legic_calccrc8(void){ | |
17 | PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes."); | |
18 | PrintAndLog("There must be an even number of hexsymbols as input."); | |
19 | PrintAndLog("Usage: hf legic crc8 [h] b <hexbytes> u <uidcrc> c <crc type>"); | |
20 | PrintAndLog("Options:"); | |
21 | PrintAndLog(" h : this help"); | |
22 | PrintAndLog(" b <hexbytes> : hex bytes"); | |
23 | PrintAndLog(" u <uidcrc> : MCC hexbyte"); | |
24 | PrintAndLog(" c <crc type> : 8|16 bit crc size"); | |
25 | PrintAndLog(""); | |
26 | PrintAndLog("Samples:"); | |
27 | PrintAndLog(" hf legic crc8 b deadbeef1122"); | |
28 | PrintAndLog(" hf legic crc8 b deadbeef1122 u 9A c 16"); | |
29 | return 0; | |
30 | } | |
31 | int usage_legic_load(void){ | |
32 | PrintAndLog("It loads datasamples from the file `filename` to device memory"); | |
33 | PrintAndLog("Usage: hf legic load [h] <file name>"); | |
34 | PrintAndLog("Options:"); | |
35 | PrintAndLog(" h : this help"); | |
36 | PrintAndLog(" <filename> : Name of file to load"); | |
37 | PrintAndLog(""); | |
38 | PrintAndLog("Samples:"); | |
39 | PrintAndLog(" hf legic load filename"); | |
40 | return 0; | |
41 | } | |
42 | int usage_legic_rdmem(void){ | |
43 | PrintAndLog("Read data from a legic tag."); | |
44 | PrintAndLog("Usage: hf legic rdmem [h] <offset> <length> <IV>"); | |
45 | PrintAndLog("Options:"); | |
46 | PrintAndLog(" h : this help"); | |
47 | PrintAndLog(" <offset> : offset in data array to start download from (hex)"); | |
48 | PrintAndLog(" <length> : number of bytes to read (hex)"); | |
49 | PrintAndLog(" <IV> : (optional) Initialization vector to use (hex, odd and 7bits)"); | |
50 | PrintAndLog(""); | |
51 | PrintAndLog("Samples:"); | |
52 | PrintAndLog(" hf legic rdmem 0 21 - reads from byte[0] 21 bytes(system header)"); | |
53 | PrintAndLog(" hf legic rdmem 0 4 55 - reads from byte[0] 4 bytes with IV 0x55"); | |
54 | PrintAndLog(" hf legic rdmem 0 100 55 - reads 256bytes with IV 0x55"); | |
55 | return 0; | |
56 | } | |
57 | int usage_legic_sim(void){ | |
58 | PrintAndLog("Missing help text."); | |
59 | return 0; | |
60 | } | |
61 | int usage_legic_write(void){ | |
62 | PrintAndLog(" Write sample buffer to a legic tag. (use after load or read)"); | |
63 | PrintAndLog("Usage: hf legic write [h] <offset> <length> <IV>"); | |
64 | PrintAndLog("Options:"); | |
65 | PrintAndLog(" h : this help"); | |
66 | PrintAndLog(" <offset> : offset in data array to start writing from (hex)"); | |
67 | PrintAndLog(" <length> : number of bytes to write (hex)"); | |
68 | PrintAndLog(" <IV> : (optional) Initialization vector to use (ODD and 7bits)"); | |
69 | PrintAndLog(""); | |
70 | PrintAndLog("Samples:"); | |
71 | PrintAndLog(" hf legic write 10 4 - writes 0x4 to byte[0x10]"); | |
72 | return 0; | |
73 | } | |
74 | int usage_legic_rawwrite(void){ | |
75 | PrintAndLog("Write raw data direct to a specific offset on legic tag."); | |
76 | PrintAndLog("Usage: hf legic writeraw [h] <offset> <value> <IV>"); | |
77 | PrintAndLog("Options:"); | |
78 | PrintAndLog(" h : this help"); | |
79 | PrintAndLog(" <offset> : offset to write to (hex)"); | |
80 | PrintAndLog(" <value> : value (hex)"); | |
81 | PrintAndLog(" <IV> : (optional) Initialization vector to use (hex, odd and 7bits)"); | |
82 | PrintAndLog(""); | |
83 | PrintAndLog("Samples:"); | |
84 | PrintAndLog(" hf legic writeraw 10 4 - writes 0x4 to byte[0x10]"); | |
85 | return 0; | |
86 | } | |
87 | int usage_legic_fill(void){ | |
88 | PrintAndLog("Missing help text."); | |
89 | return 0; | |
90 | } | |
91 | int usage_legic_reader(void){ | |
92 | PrintAndLog("Read UID and type information from a legic tag."); | |
93 | PrintAndLog("Usage: hf legic reader [h]"); | |
94 | PrintAndLog("Options:"); | |
95 | PrintAndLog(" h : this help"); | |
96 | PrintAndLog(""); | |
97 | PrintAndLog("Samples:"); | |
98 | PrintAndLog(" hf legic reader"); | |
99 | return 0; | |
100 | } | |
101 | int usage_legic_info(void){ | |
102 | PrintAndLog("Reads information from a legic prime tag."); | |
103 | PrintAndLog("Shows systemarea, user areas etc"); | |
104 | PrintAndLog("Usage: hf legic info [h]"); | |
105 | PrintAndLog("Options:"); | |
106 | PrintAndLog(" h : this help"); | |
107 | PrintAndLog(""); | |
108 | PrintAndLog("Samples:"); | |
109 | PrintAndLog(" hf legic info"); | |
110 | return 0; | |
111 | } | |
112 | int usage_legic_dump(void){ | |
113 | PrintAndLog("Reads all pages from LEGIC MIM22, MIM256, MIM1024"); | |
114 | PrintAndLog("and saves binary dump into the file `filename.bin` or `cardUID.bin`"); | |
115 | PrintAndLog("It autodetects card type.\n"); | |
116 | PrintAndLog("Usage: hf legic dump [h] o <filename w/o .bin>"); | |
117 | PrintAndLog("Options:"); | |
118 | PrintAndLog(" h : this help"); | |
119 | PrintAndLog(" n <FN> : filename w/o .bin to save the dump as"); | |
120 | PrintAndLog(""); | |
121 | PrintAndLog("Samples:"); | |
122 | PrintAndLog(" hf legic dump"); | |
123 | PrintAndLog(" hf legic dump o myfile"); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | /* | |
128 | * Output BigBuf and deobfuscate LEGIC RF tag data. | |
129 | * This is based on information given in the talk held | |
130 | * by Henryk Ploetz and Karsten Nohl at 26c3 | |
131 | */ | |
132 | int CmdLegicInfo(const char *Cmd) { | |
133 | ||
134 | char cmdp = param_getchar(Cmd, 0); | |
135 | if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info(); | |
136 | ||
137 | int i = 0, k = 0, segmentNum = 0, segment_len = 0, segment_flag = 0; | |
138 | int crc = 0, wrp = 0, wrc = 0; | |
139 | uint8_t stamp_len = 0; | |
140 | uint8_t data[1024]; // receiver buffer | |
141 | char token_type[5] = {0,0,0,0,0}; | |
142 | int dcf = 0; | |
143 | int bIsSegmented = 0; | |
144 | ||
145 | CmdLegicRdmem("0 21 55"); | |
146 | ||
147 | // copy data from device | |
148 | GetEMLFromBigBuf(data, sizeof(data), 0); | |
149 | if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){ | |
150 | PrintAndLog("Command execute timeout"); | |
151 | return 1; | |
152 | } | |
153 | ||
154 | // Output CDF System area (9 bytes) plus remaining header area (12 bytes) | |
155 | crc = data[4]; | |
156 | uint32_t calc_crc = CRC8Legic(data, 4); | |
157 | ||
158 | PrintAndLog("\nCDF: System Area"); | |
159 | PrintAndLog("------------------------------------------------------"); | |
160 | PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x %s", | |
161 | data[0], | |
162 | data[1], | |
163 | data[2], | |
164 | data[3], | |
165 | data[4], | |
166 | (calc_crc == crc) ? "OK":"Fail" | |
167 | ); | |
168 | ||
169 | ||
170 | token_type[0] = 0; | |
171 | dcf = ((int)data[6] << 8) | (int)data[5]; | |
172 | ||
173 | // New unwritten media? | |
174 | if(dcf == 0xFFFF) { | |
175 | ||
176 | PrintAndLog("DCF: %d (%02x %02x), Token Type=NM (New Media)", | |
177 | dcf, | |
178 | data[5], | |
179 | data[6] | |
180 | ); | |
181 | ||
182 | } else if(dcf > 60000) { // Master token? | |
183 | ||
184 | int fl = 0; | |
185 | ||
186 | if(data[6] == 0xec) { | |
187 | strncpy(token_type, "XAM", sizeof(token_type)); | |
188 | fl = 1; | |
189 | stamp_len = 0x0c - (data[5] >> 4); | |
190 | } else { | |
191 | switch (data[5] & 0x7f) { | |
192 | case 0x00 ... 0x2f: | |
193 | strncpy(token_type, "IAM", sizeof(token_type)); | |
194 | fl = (0x2f - (data[5] & 0x7f)) + 1; | |
195 | break; | |
196 | case 0x30 ... 0x6f: | |
197 | strncpy(token_type, "SAM", sizeof(token_type)); | |
198 | fl = (0x6f - (data[5] & 0x7f)) + 1; | |
199 | break; | |
200 | case 0x70 ... 0x7f: | |
201 | strncpy(token_type, "GAM", sizeof(token_type)); | |
202 | fl = (0x7f - (data[5] & 0x7f)) + 1; | |
203 | break; | |
204 | } | |
205 | ||
206 | stamp_len = 0xfc - data[6]; | |
207 | } | |
208 | ||
209 | PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u), OL=%02u, FL=%02u", | |
210 | dcf, | |
211 | data[5], | |
212 | data[6], | |
213 | token_type, | |
214 | (data[5] & 0x80 )>> 7, | |
215 | stamp_len, | |
216 | fl | |
217 | ); | |
218 | ||
219 | } else { // Is IM(-S) type of card... | |
220 | ||
221 | if(data[7] == 0x9F && data[8] == 0xFF) { | |
222 | bIsSegmented = 1; | |
223 | strncpy(token_type, "IM-S", sizeof(token_type)); | |
224 | } else { | |
225 | strncpy(token_type, "IM", sizeof(token_type)); | |
226 | } | |
227 | ||
228 | PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u)", | |
229 | dcf, | |
230 | data[5], | |
231 | data[6], | |
232 | token_type, | |
233 | (data[5]&0x80) >> 7 | |
234 | ); | |
235 | } | |
236 | ||
237 | // Makes no sence to show this on blank media... | |
238 | if(dcf != 0xFFFF) { | |
239 | ||
240 | if(bIsSegmented) { | |
241 | PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, SSC=%02x", | |
242 | data[7] & 0x0f, | |
243 | (data[7] & 0x70) >> 4, | |
244 | (data[7] & 0x80) >> 7, | |
245 | data[8] | |
246 | ); | |
247 | } | |
248 | ||
249 | // Header area is only available on IM-S cards, on master tokens this data is the master token data itself | |
250 | if(bIsSegmented || dcf > 60000) { | |
251 | if(dcf > 60000) { | |
252 | PrintAndLog("Master token data"); | |
253 | PrintAndLog("%s", sprint_hex(data+8, 14)); | |
254 | } else { | |
255 | PrintAndLog("Remaining Header Area"); | |
256 | PrintAndLog("%s", sprint_hex(data+9, 13)); | |
257 | } | |
258 | } | |
259 | } | |
260 | ||
261 | uint8_t segCrcBytes[8] = {0,0,0,0,0,0,0,0}; | |
262 | uint32_t segCalcCRC = 0; | |
263 | uint32_t segCRC = 0; | |
264 | ||
265 | // Data card? | |
266 | if(dcf <= 60000) { | |
267 | ||
268 | PrintAndLog("\nADF: User Area"); | |
269 | PrintAndLog("------------------------------------------------------"); | |
270 | ||
271 | if(bIsSegmented) { | |
272 | ||
273 | // Data start point on segmented cards | |
274 | i = 22; | |
275 | ||
276 | // decode segments | |
277 | for (segmentNum=1; segmentNum < 128; segmentNum++ ) | |
278 | { | |
279 | segment_len = ((data[i+1] ^ crc) & 0x0f) * 256 + (data[i] ^ crc); | |
280 | segment_flag = ((data[i+1] ^ crc) & 0xf0) >> 4; | |
281 | wrp = (data[i+2] ^ crc); | |
282 | wrc = ((data[i+3] ^ crc) & 0x70) >> 4; | |
283 | ||
284 | bool hasWRC = (wrc > 0); | |
285 | bool hasWRP = (wrp > wrc); | |
286 | int wrp_len = (wrp - wrc); | |
287 | int remain_seg_payload_len = (segment_len - wrp - 5); | |
288 | ||
289 | // validate segment-crc | |
290 | segCrcBytes[0]=data[0]; //uid0 | |
291 | segCrcBytes[1]=data[1]; //uid1 | |
292 | segCrcBytes[2]=data[2]; //uid2 | |
293 | segCrcBytes[3]=data[3]; //uid3 | |
294 | segCrcBytes[4]=(data[i] ^ crc); //hdr0 | |
295 | segCrcBytes[5]=(data[i+1] ^ crc); //hdr1 | |
296 | segCrcBytes[6]=(data[i+2] ^ crc); //hdr2 | |
297 | segCrcBytes[7]=(data[i+3] ^ crc); //hdr3 | |
298 | ||
299 | segCalcCRC = CRC8Legic(segCrcBytes, 8); | |
300 | segCRC = data[i+4] ^ crc; | |
301 | ||
302 | PrintAndLog("Segment %02u \nraw header | 0x%02X 0x%02X 0x%02X 0x%02X \nSegment len: %u, Flag: 0x%X (valid:%01u, last:%01u), WRP: %02u, WRC: %02u, RD: %01u, CRC: 0x%02X (%s)", | |
303 | segmentNum, | |
304 | data[i] ^ crc, | |
305 | data[i+1] ^ crc, | |
306 | data[i+2] ^ crc, | |
307 | data[i+3] ^ crc, | |
308 | segment_len, | |
309 | segment_flag, | |
310 | (segment_flag & 0x4) >> 2, | |
311 | (segment_flag & 0x8) >> 3, | |
312 | wrp, | |
313 | wrc, | |
314 | ((data[i+3]^crc) & 0x80) >> 7, | |
315 | segCRC, | |
316 | ( segCRC == segCalcCRC ) ? "OK" : "fail" | |
317 | ); | |
318 | ||
319 | i += 5; | |
320 | ||
321 | if ( hasWRC ) { | |
322 | PrintAndLog("WRC protected area: (I %d | K %d| WRC %d)", i, k, wrc); | |
323 | PrintAndLog("\nrow | data"); | |
324 | PrintAndLog("-----+------------------------------------------------"); | |
325 | ||
326 | for ( k=i; k < (i + wrc); ++k) | |
327 | data[k] ^= crc; | |
328 | ||
329 | print_hex_break( data+i, wrc, 16); | |
330 | ||
331 | i += wrc; | |
332 | } | |
333 | ||
334 | if ( hasWRP ) { | |
335 | PrintAndLog("Remaining write protected area: (I %d | K %d | WRC %d | WRP %d WRP_LEN %d)",i, k, wrc, wrp, wrp_len); | |
336 | PrintAndLog("\nrow | data"); | |
337 | PrintAndLog("-----+------------------------------------------------"); | |
338 | ||
339 | for (k=i; k < (i+wrp_len); ++k) | |
340 | data[k] ^= crc; | |
341 | ||
342 | print_hex_break( data+i, wrp_len, 16); | |
343 | ||
344 | i += wrp_len; | |
345 | ||
346 | // does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...) | |
347 | if( wrp_len == 8 ) | |
348 | PrintAndLog("Card ID: %2X%02X%02X", data[i-4]^crc, data[i-3]^crc, data[i-2]^crc); | |
349 | } | |
350 | ||
351 | PrintAndLog("Remaining segment payload: (I %d | K %d | Remain LEN %d)", i, k, remain_seg_payload_len); | |
352 | PrintAndLog("\nrow | data"); | |
353 | PrintAndLog("-----+------------------------------------------------"); | |
354 | ||
355 | for ( k=i; k < (i+remain_seg_payload_len); ++k) | |
356 | data[k] ^= crc; | |
357 | ||
358 | print_hex_break( data+i, remain_seg_payload_len, 16); | |
359 | ||
360 | i += remain_seg_payload_len; | |
361 | ||
362 | PrintAndLog("-----+------------------------------------------------\n"); | |
363 | ||
364 | // end with last segment | |
365 | if (segment_flag & 0x8) return 0; | |
366 | ||
367 | } // end for loop | |
368 | ||
369 | } else { | |
370 | ||
371 | // Data start point on unsegmented cards | |
372 | i = 8; | |
373 | ||
374 | wrp = data[7] & 0x0F; | |
375 | wrc = (data[7] & 0x70) >> 4; | |
376 | ||
377 | bool hasWRC = (wrc > 0); | |
378 | bool hasWRP = (wrp > wrc); | |
379 | int wrp_len = (wrp - wrc); | |
380 | int remain_seg_payload_len = (1024 - 22 - wrp); // Any chance to get physical card size here!? | |
381 | ||
382 | PrintAndLog("Unsegmented card - WRP: %02u, WRC: %02u, RD: %01u", | |
383 | wrp, | |
384 | wrc, | |
385 | (data[7] & 0x80) >> 7 | |
386 | ); | |
387 | ||
388 | if ( hasWRC ) { | |
389 | PrintAndLog("WRC protected area: (I %d | WRC %d)", i, wrc); | |
390 | PrintAndLog("\nrow | data"); | |
391 | PrintAndLog("-----+------------------------------------------------"); | |
392 | print_hex_break( data+i, wrc, 16); | |
393 | i += wrc; | |
394 | } | |
395 | ||
396 | if ( hasWRP ) { | |
397 | PrintAndLog("Remaining write protected area: (I %d | WRC %d | WRP %d | WRP_LEN %d)", i, wrc, wrp, wrp_len); | |
398 | PrintAndLog("\nrow | data"); | |
399 | PrintAndLog("-----+------------------------------------------------"); | |
400 | print_hex_break( data + i, wrp_len, 16); | |
401 | i += wrp_len; | |
402 | ||
403 | // does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...) | |
404 | if( wrp_len == 8 ) | |
405 | PrintAndLog("Card ID: %2X%02X%02X", data[i-4], data[i-3], data[i-2]); | |
406 | } | |
407 | ||
408 | PrintAndLog("Remaining segment payload: (I %d | Remain LEN %d)", i, remain_seg_payload_len); | |
409 | PrintAndLog("\nrow | data"); | |
410 | PrintAndLog("-----+------------------------------------------------"); | |
411 | print_hex_break( data + i, remain_seg_payload_len, 16); | |
412 | i += remain_seg_payload_len; | |
413 | ||
414 | PrintAndLog("-----+------------------------------------------------\n"); | |
415 | } | |
416 | } | |
417 | return 0; | |
418 | } | |
419 | ||
420 | int CmdLegicRdmem(const char *Cmd) { | |
421 | ||
422 | // params: | |
423 | // offset in data memory | |
424 | // number of bytes to read | |
425 | char cmdp = param_getchar(Cmd, 0); | |
426 | if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rdmem(); | |
427 | ||
428 | uint32_t offset = 0, len = 0, IV = 1; | |
429 | sscanf(Cmd, "%x %x %x", &offset, &len, &IV); | |
430 | ||
431 | // OUT-OF-BOUNDS check | |
432 | if ( len + offset > MAX_LENGTH ) { | |
433 | len = MAX_LENGTH - offset; | |
434 | PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len); | |
435 | } | |
436 | ||
437 | if ( (IV & 0x7F) != IV ){ | |
438 | IV &= 0x7F; | |
439 | PrintAndLog("Truncating IV to 7bits"); | |
440 | } | |
441 | ||
442 | if ( (IV & 1) == 0 ){ | |
443 | IV |= 0x01; | |
444 | PrintAndLog("LSB of IV must be SET"); | |
445 | } | |
446 | ||
447 | UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}}; | |
448 | clearCommandBuffer(); | |
449 | SendCommand(&c); | |
450 | UsbCommand resp; | |
451 | if (WaitForResponseTimeout(CMD_ACK, &resp, 3000)) { | |
452 | uint8_t isOK = resp.arg[0] & 0xFF; | |
453 | uint16_t readlen = resp.arg[1]; | |
454 | if ( isOK ) { | |
455 | ||
456 | uint8_t *data = malloc(readlen); | |
457 | if ( !data ){ | |
458 | PrintAndLog("Cannot allocate memory"); | |
459 | return 2; | |
460 | } | |
461 | ||
462 | if ( readlen != len ) | |
463 | PrintAndLog("Fail, only managed to read 0x%02X bytes", readlen); | |
464 | ||
465 | // copy data from device | |
466 | GetEMLFromBigBuf(data, readlen, 0); | |
467 | if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)){ | |
468 | PrintAndLog("Command execute timeout"); | |
469 | if ( data ) | |
470 | free(data); | |
471 | return 1; | |
472 | } | |
473 | ||
474 | PrintAndLog("\n ## | Data"); | |
475 | PrintAndLog("-----+-----"); | |
476 | print_hex_break( data, readlen, 32); | |
477 | } else { | |
478 | PrintAndLog("failed reading tag"); | |
479 | } | |
480 | } else { | |
481 | PrintAndLog("command execution time out"); | |
482 | return 1; | |
483 | } | |
484 | return 0; | |
485 | } | |
486 | ||
487 | int CmdLegicLoad(const char *Cmd) { | |
488 | ||
489 | // iceman: potential bug, where all filepaths or filename which starts with H or h will print the helptext :) | |
490 | char cmdp = param_getchar(Cmd, 0); | |
491 | if ( cmdp == 'H' || cmdp == 'h' || cmdp == 0x00) return usage_legic_load(); | |
492 | ||
493 | char filename[FILE_PATH_SIZE] = {0x00}; | |
494 | int len = strlen(Cmd); | |
495 | ||
496 | if (len > FILE_PATH_SIZE) { | |
497 | PrintAndLog("Filepath too long (was %s bytes), max allowed is %s ", len, FILE_PATH_SIZE); | |
498 | return 0; | |
499 | } | |
500 | memcpy(filename, Cmd, len); | |
501 | ||
502 | FILE *f = fopen(filename, "r"); | |
503 | if(!f) { | |
504 | PrintAndLog("couldn't open '%s'", Cmd); | |
505 | return -1; | |
506 | } | |
507 | ||
508 | char line[80]; | |
509 | int offset = 0; | |
510 | uint8_t data[USB_CMD_DATA_SIZE] = {0x00}; | |
511 | int index = 0; | |
512 | int totalbytes = 0; | |
513 | while ( fgets(line, sizeof(line), f) ) { | |
514 | int res = sscanf(line, "%x %x %x %x %x %x %x %x", | |
515 | (unsigned int *)&data[index], | |
516 | (unsigned int *)&data[index + 1], | |
517 | (unsigned int *)&data[index + 2], | |
518 | (unsigned int *)&data[index + 3], | |
519 | (unsigned int *)&data[index + 4], | |
520 | (unsigned int *)&data[index + 5], | |
521 | (unsigned int *)&data[index + 6], | |
522 | (unsigned int *)&data[index + 7]); | |
523 | ||
524 | if(res != 8) { | |
525 | PrintAndLog("Error: could not read samples"); | |
526 | fclose(f); | |
527 | return -1; | |
528 | } | |
529 | index += res; | |
530 | ||
531 | if ( index == USB_CMD_DATA_SIZE ){ | |
532 | // PrintAndLog("sent %d | %d | %d", index, offset, totalbytes); | |
533 | UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}}; | |
534 | memcpy(c.d.asBytes, data, sizeof(data)); | |
535 | clearCommandBuffer(); | |
536 | SendCommand(&c); | |
537 | if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){ | |
538 | PrintAndLog("Command execute timeout"); | |
539 | fclose(f); | |
540 | return 1; | |
541 | } | |
542 | offset += index; | |
543 | totalbytes += index; | |
544 | index = 0; | |
545 | } | |
546 | } | |
547 | fclose(f); | |
548 | ||
549 | // left over bytes? | |
550 | if ( index != 0 ) { | |
551 | UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}}; | |
552 | memcpy(c.d.asBytes, data, 8); | |
553 | clearCommandBuffer(); | |
554 | SendCommand(&c); | |
555 | if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){ | |
556 | PrintAndLog("Command execute timeout"); | |
557 | return 1; | |
558 | } | |
559 | totalbytes += index; | |
560 | } | |
561 | ||
562 | PrintAndLog("loaded %u samples", totalbytes); | |
563 | return 0; | |
564 | } | |
565 | ||
566 | int CmdLegicSave(const char *Cmd) { | |
567 | int requested = 1024; | |
568 | int offset = 0; | |
569 | int delivered = 0; | |
570 | char filename[FILE_PATH_SIZE] = {0x00}; | |
571 | uint8_t got[1024] = {0x00}; | |
572 | ||
573 | memset(filename, 0, FILE_PATH_SIZE); | |
574 | ||
575 | sscanf(Cmd, " %s %i %i", filename, &requested, &offset); | |
576 | ||
577 | /* If no length given save entire legic read buffer */ | |
578 | /* round up to nearest 8 bytes so the saved data can be used with legicload */ | |
579 | if (requested == 0) | |
580 | requested = 1024; | |
581 | ||
582 | if (requested % 8 != 0) { | |
583 | int remainder = requested % 8; | |
584 | requested = requested + 8 - remainder; | |
585 | } | |
586 | ||
587 | if (offset + requested > sizeof(got)) { | |
588 | PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 1024"); | |
589 | return 0; | |
590 | } | |
591 | ||
592 | GetFromBigBuf(got, requested, offset); | |
593 | if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){ | |
594 | PrintAndLog("Command execute timeout"); | |
595 | return 1; | |
596 | } | |
597 | ||
598 | FILE *f = fopen(filename, "w"); | |
599 | if(!f) { | |
600 | PrintAndLog("couldn't open '%s'", Cmd+1); | |
601 | return -1; | |
602 | } | |
603 | ||
604 | for (int j = 0; j < requested; j += 8) { | |
605 | fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n", | |
606 | got[j+0], got[j+1], got[j+2], got[j+3], | |
607 | got[j+4], got[j+5], got[j+6], got[j+7] | |
608 | ); | |
609 | delivered += 8; | |
610 | if (delivered >= requested) break; | |
611 | } | |
612 | ||
613 | fclose(f); | |
614 | PrintAndLog("saved %u samples", delivered); | |
615 | return 0; | |
616 | } | |
617 | ||
618 | //TODO: write a help text (iceman) | |
619 | int CmdLegicRfSim(const char *Cmd) { | |
620 | UsbCommand c = {CMD_SIMULATE_TAG_LEGIC_RF, {6,3,0}}; | |
621 | sscanf(Cmd, " %"lli" %"lli" %"lli, &c.arg[0], &c.arg[1], &c.arg[2]); | |
622 | clearCommandBuffer(); | |
623 | SendCommand(&c); | |
624 | return 0; | |
625 | } | |
626 | ||
627 | int CmdLegicRfWrite(const char *Cmd) { | |
628 | ||
629 | // params: | |
630 | // offset - in tag memory | |
631 | // length - num of bytes to be written | |
632 | // IV - initialisation vector | |
633 | ||
634 | char cmdp = param_getchar(Cmd, 0); | |
635 | if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_write(); | |
636 | ||
637 | uint32_t offset = 0, len = 0, IV = 0; | |
638 | ||
639 | int res = sscanf(Cmd, "%x %x %x", &offset, &len, &IV); | |
640 | if(res < 2) { | |
641 | PrintAndLog("Please specify the offset and length as two hex strings and, optionally, the IV also as an hex string"); | |
642 | return -1; | |
643 | } | |
644 | ||
645 | // OUT-OF-BOUNDS check | |
646 | if ( len + offset > MAX_LENGTH ) { | |
647 | len = MAX_LENGTH - offset; | |
648 | PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len); | |
649 | } | |
650 | if ( (IV & 0x7F) != IV ){ | |
651 | IV &= 0x7F; | |
652 | PrintAndLog("Truncating IV to 7bits"); | |
653 | } | |
654 | if ( (IV & 1) == 0 ){ | |
655 | IV |= 0x01; // IV must be odd | |
656 | PrintAndLog("LSB of IV must be SET"); | |
657 | } | |
658 | ||
659 | UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}}; | |
660 | clearCommandBuffer(); | |
661 | SendCommand(&c); | |
662 | UsbCommand resp; | |
663 | if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) { | |
664 | uint8_t isOK = resp.arg[0] & 0xFF; | |
665 | if ( isOK ) { | |
666 | } else { | |
667 | PrintAndLog("failed writig tag"); | |
668 | } | |
669 | } else { | |
670 | PrintAndLog("command execution time out"); | |
671 | return 1; | |
672 | } | |
673 | ||
674 | return 0; | |
675 | } | |
676 | ||
677 | int CmdLegicRfRawWrite(const char *Cmd) { | |
678 | ||
679 | char cmdp = param_getchar(Cmd, 0); | |
680 | if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rawwrite(); | |
681 | ||
682 | uint32_t offset = 0, data = 0, IV = 0; | |
683 | char answer; | |
684 | ||
685 | int res = sscanf(Cmd, "%x %x %x", &offset, &data, &IV); | |
686 | if(res < 2) | |
687 | return usage_legic_rawwrite(); | |
688 | ||
689 | // OUT-OF-BOUNDS check | |
690 | if ( offset > MAX_LENGTH ) { | |
691 | PrintAndLog("Out-of-bound, offset"); | |
692 | return 1; | |
693 | } | |
694 | ||
695 | if ( (IV & 0x7F) != IV ){ | |
696 | IV &= 0x7F; | |
697 | PrintAndLog("Truncating IV to 7bits"); | |
698 | } | |
699 | if ( (IV & 1) == 0 ){ | |
700 | IV |= 0x01; // IV must be odd | |
701 | PrintAndLog("LSB of IV must be SET"); | |
702 | } | |
703 | ||
704 | UsbCommand c = { CMD_RAW_WRITER_LEGIC_RF, {offset, data, IV} }; | |
705 | ||
706 | if (c.arg[0] == 0x05 || c.arg[0] == 0x06) { | |
707 | PrintAndLog("############# DANGER !! #############"); | |
708 | PrintAndLog("# changing the DCF is irreversible #"); | |
709 | PrintAndLog("#####################################"); | |
710 | PrintAndLog("do youe really want to continue? y(es) n(o)"); | |
711 | if (scanf(" %c", &answer) > 0 && (answer == 'y' || answer == 'Y')) { | |
712 | SendCommand(&c); | |
713 | return 0; | |
714 | } | |
715 | return -1; | |
716 | } | |
717 | ||
718 | clearCommandBuffer(); | |
719 | SendCommand(&c); | |
720 | return 0; | |
721 | } | |
722 | ||
723 | //TODO: write a help text (iceman) | |
724 | int CmdLegicRfFill(const char *Cmd) { | |
725 | UsbCommand cmd = {CMD_WRITER_LEGIC_RF, {0,0,0} }; | |
726 | int res = sscanf(Cmd, " 0x%"llx" 0x%"llx" 0x%"llx, &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]); | |
727 | if(res != 3) { | |
728 | PrintAndLog("Please specify the offset, length and value as two hex strings"); | |
729 | return -1; | |
730 | } | |
731 | ||
732 | int i; | |
733 | UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}}; | |
734 | memset(c.d.asBytes, cmd.arg[2], 48); | |
735 | ||
736 | for(i = 0; i < 22; i++) { | |
737 | c.arg[0] = i*48; | |
738 | ||
739 | clearCommandBuffer(); | |
740 | SendCommand(&c); | |
741 | WaitForResponse(CMD_ACK, NULL); | |
742 | } | |
743 | clearCommandBuffer(); | |
744 | SendCommand(&cmd); | |
745 | return 0; | |
746 | } | |
747 | ||
748 | void static calc4(uint8_t *cmd, uint8_t len){ | |
749 | crc_t crc; | |
750 | //crc_init_ref(&crc, 4, 0x19 >> 1, 0x5, 0, TRUE, TRUE); | |
751 | crc_init(&crc, 4, 0x19 >> 1, 0x5, 0); | |
752 | ||
753 | crc_clear(&crc); | |
754 | crc_update(&crc, 1, 1); /* CMD_READ */ | |
755 | crc_update(&crc, cmd[0], 8); | |
756 | crc_update(&crc, cmd[1], 8); | |
757 | printf("crc4 %X\n", reflect(crc_finish(&crc), 4) ) ; | |
758 | ||
759 | crc_clear(&crc); | |
760 | crc_update(&crc, 1, 1); /* CMD_READ */ | |
761 | crc_update(&crc, cmd[0], 8); | |
762 | crc_update(&crc, cmd[1], 8); | |
763 | printf("crc4 %X\n", crc_finish(&crc) ) ; | |
764 | ||
765 | printf("---- old ---\n"); | |
766 | crc_update2(&crc, 1, 1); /* CMD_READ */ | |
767 | crc_update2(&crc, cmd[0], 8); | |
768 | crc_update2(&crc, cmd[1], 8); | |
769 | printf("crc4 %X \n", reflect(crc_finish(&crc), 4) ) ; | |
770 | ||
771 | ||
772 | crc_clear(&crc); | |
773 | crc_update2(&crc, 1, 1); /* CMD_READ */ | |
774 | crc_update2(&crc, cmd[0], 8); | |
775 | crc_update2(&crc, cmd[1], 8); | |
776 | printf("crc4 %X\n", crc_finish(&crc) ) ; | |
777 | } | |
778 | ||
779 | int CmdLegicCalcCrc8(const char *Cmd){ | |
780 | ||
781 | uint8_t *data = NULL; | |
782 | uint8_t cmdp = 0, uidcrc = 0, type=0; | |
783 | bool errors = false; | |
784 | int len = 0; | |
785 | int bg, en; | |
786 | ||
787 | while(param_getchar(Cmd, cmdp) != 0x00) { | |
788 | switch(param_getchar(Cmd, cmdp)) { | |
789 | case 'b': | |
790 | case 'B': | |
791 | // peek at length of the input string so we can | |
792 | // figure out how many elements to malloc in "data" | |
793 | bg=en=0; | |
794 | if (param_getptr(Cmd, &bg, &en, cmdp+1)) { | |
795 | errors = true; | |
796 | break; | |
797 | } | |
798 | len = (en - bg + 1); | |
799 | ||
800 | // check that user entered even number of characters | |
801 | // for hex data string | |
802 | if (len & 1) { | |
803 | errors = true; | |
804 | break; | |
805 | } | |
806 | ||
807 | // it's possible for user to accidentally enter "b" parameter | |
808 | // more than once - we have to clean previous malloc | |
809 | if (data) free(data); | |
810 | data = malloc(len >> 1); | |
811 | if ( data == NULL ) { | |
812 | PrintAndLog("Can't allocate memory. exiting"); | |
813 | errors = true; | |
814 | break; | |
815 | } | |
816 | ||
817 | if (param_gethex(Cmd, cmdp+1, data, len)) { | |
818 | errors = true; | |
819 | break; | |
820 | } | |
821 | ||
822 | len >>= 1; | |
823 | cmdp += 2; | |
824 | break; | |
825 | case 'u': | |
826 | case 'U': | |
827 | uidcrc = param_get8ex(Cmd, cmdp+1, 0, 16); | |
828 | cmdp += 2; | |
829 | break; | |
830 | case 'c': | |
831 | case 'C': | |
832 | type = param_get8ex(Cmd, cmdp+1, 0, 10); | |
833 | cmdp += 2; | |
834 | break; | |
835 | case 'h': | |
836 | case 'H': | |
837 | errors = true; | |
838 | break; | |
839 | default: | |
840 | PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); | |
841 | errors = true; | |
842 | break; | |
843 | } | |
844 | if (errors) break; | |
845 | } | |
846 | //Validations | |
847 | if (errors){ | |
848 | if (data) free(data); | |
849 | return usage_legic_calccrc8(); | |
850 | } | |
851 | ||
852 | switch (type){ | |
853 | case 16: | |
854 | PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc)); | |
855 | break; | |
856 | case 4: | |
857 | calc4(data, 0); | |
858 | break; | |
859 | default: | |
860 | PrintAndLog("Legic crc8: %X", CRC8Legic(data, len) ); | |
861 | break; | |
862 | } | |
863 | ||
864 | if (data) free(data); | |
865 | return 0; | |
866 | } | |
867 | ||
868 | int HFLegicReader(const char *Cmd, bool verbose) { | |
869 | ||
870 | char cmdp = param_getchar(Cmd, 0); | |
871 | if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info(); | |
872 | ||
873 | UsbCommand c = {CMD_LEGIC_INFO, {0,0,0}}; | |
874 | clearCommandBuffer(); | |
875 | SendCommand(&c); | |
876 | UsbCommand resp; | |
877 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 500)) { | |
878 | if ( verbose ) PrintAndLog("command execution time out"); | |
879 | return 1; | |
880 | } | |
881 | ||
882 | uint8_t isOK = resp.arg[0] & 0xFF; | |
883 | if ( !isOK ) { | |
884 | if ( verbose ) PrintAndLog("legic card select failed"); | |
885 | return 1; | |
886 | } | |
887 | ||
888 | legic_card_select_t card; | |
889 | memcpy(&card, (legic_card_select_t *)resp.d.asBytes, sizeof(legic_card_select_t)); | |
890 | ||
891 | PrintAndLog(" UID : %s", sprint_hex(card.uid, sizeof(card.uid))); | |
892 | switch(card.cardsize) { | |
893 | case 22: | |
894 | case 256: | |
895 | case 1024: | |
896 | PrintAndLog(" TYPE : MIM%d card (%d bytes)", card.cardsize, card.cardsize); break; | |
897 | default: { | |
898 | PrintAndLog("Unknown card format: %d", card.cardsize); | |
899 | return 1; | |
900 | } | |
901 | } | |
902 | return 0; | |
903 | } | |
904 | int CmdLegicReader(const char *Cmd){ | |
905 | return HFLegicReader(Cmd, TRUE); | |
906 | } | |
907 | ||
908 | int CmdLegicDump(const char *Cmd){ | |
909 | ||
910 | FILE *fout; | |
911 | char filename[FILE_PATH_SIZE] = {0x00}; | |
912 | char *fnameptr = filename; | |
913 | size_t fileNlen = 0; | |
914 | bool errors = false; | |
915 | uint16_t dumplen = 0x100; | |
916 | ||
917 | char cmdp = param_getchar(Cmd, 0); | |
918 | ||
919 | while(param_getchar(Cmd, cmdp) != 0x00) | |
920 | { | |
921 | switch(param_getchar(Cmd, cmdp)) | |
922 | { | |
923 | case 'h': | |
924 | case 'H': | |
925 | return usage_legic_dump(); | |
926 | case 'o': | |
927 | case 'O': | |
928 | fileNlen = param_getstr(Cmd, cmdp+1, filename); | |
929 | if (!fileNlen) errors = true; | |
930 | if (fileNlen > FILE_PATH_SIZE-5) fileNlen = FILE_PATH_SIZE-5; | |
931 | cmdp += 2; | |
932 | break; | |
933 | default: | |
934 | PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); | |
935 | errors = true; | |
936 | break; | |
937 | } | |
938 | if(errors) break; | |
939 | } | |
940 | ||
941 | //Validations | |
942 | if(errors) return usage_legic_dump(); | |
943 | ||
944 | // tagtype | |
945 | //uint32_t tagtype = GetHF14AMfU_Type(); | |
946 | //if (tagtype == -1) return -1; | |
947 | ||
948 | UsbCommand c = {CMD_READER_LEGIC_RF, {0x00, dumplen, 0x55}}; | |
949 | clearCommandBuffer(); | |
950 | SendCommand(&c); | |
951 | UsbCommand resp; | |
952 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 3000)) { | |
953 | PrintAndLog("Command execute time-out"); | |
954 | return 1; | |
955 | } | |
956 | ||
957 | uint8_t isOK = resp.arg[0] & 0xFF; | |
958 | if ( !isOK ) { | |
959 | PrintAndLog("Failed dumping tag data"); | |
960 | return 2; | |
961 | } | |
962 | ||
963 | uint16_t readlen = resp.arg[1]; | |
964 | uint8_t *data = malloc(readlen); | |
965 | if ( !data ){ | |
966 | PrintAndLog("Fail, cannot allocate memory"); | |
967 | return 3; | |
968 | } | |
969 | ||
970 | if ( readlen != dumplen ) | |
971 | PrintAndLog("Fail, only managed to read 0x%02X bytes of 0x%02X", readlen, dumplen); | |
972 | ||
973 | // copy data from device | |
974 | GetEMLFromBigBuf(data, readlen, 0); | |
975 | if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)) { | |
976 | PrintAndLog("Fail, transfer from device time-out"); | |
977 | if ( data ) free(data); | |
978 | return 4; | |
979 | } | |
980 | ||
981 | // user supplied filename? | |
982 | if (fileNlen < 1) | |
983 | sprintf(fnameptr,"%02X%02X%02X%02X.bin", data[0], data[1], data[2], data[3]); | |
984 | else | |
985 | sprintf(fnameptr + fileNlen,".bin"); | |
986 | ||
987 | if ((fout = fopen(filename,"wb")) == NULL) { | |
988 | PrintAndLog("Could not create file name %s", filename); | |
989 | if ( data ) free(data); | |
990 | return 5; | |
991 | } | |
992 | fwrite( data, 1, readlen, fout ); | |
993 | fclose(fout); | |
994 | if ( data ) free(data); | |
995 | ||
996 | PrintAndLog("Wrote %d bytes to %s", readlen, filename); | |
997 | return 0; | |
998 | } | |
999 | ||
1000 | static command_t CommandTable[] = { | |
1001 | {"help", CmdHelp, 1, "This help"}, | |
1002 | {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and Type tag info"}, | |
1003 | {"info", CmdLegicInfo, 0, "Display deobfuscated and decoded LEGIC Prime tag data"}, | |
1004 | {"dump", CmdLegicDump, 0, "Dump LEGIC Prime card to binary file"}, | |
1005 | {"rdmem", CmdLegicRdmem, 0, "[offset][length] <iv> -- read bytes from a LEGIC card"}, | |
1006 | {"save", CmdLegicSave, 0, "<filename> [<length>] -- Store samples"}, | |
1007 | {"load", CmdLegicLoad, 0, "<filename> -- Restore samples"}, | |
1008 | {"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"}, | |
1009 | {"write", CmdLegicRfWrite, 0, "<offset> <length> <iv> -- Write sample buffer (user after load or read)"}, | |
1010 | {"writeraw",CmdLegicRfRawWrite, 0, "<address> <value> <iv> -- Write direct to address"}, | |
1011 | {"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"}, | |
1012 | {"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"}, | |
1013 | {NULL, NULL, 0, NULL} | |
1014 | }; | |
1015 | ||
1016 | int CmdHFLegic(const char *Cmd) { | |
1017 | clearCommandBuffer(); | |
1018 | CmdsParse(CommandTable, Cmd); | |
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | int CmdHelp(const char *Cmd) { | |
1023 | CmdsHelp(CommandTable); | |
1024 | return 0; | |
1025 | } |