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1 | //----------------------------------------------------------------------------- | |
2 | // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch | |
3 | // Copyright (C) 2011 Gerhard de Koning Gans | |
4 | // Copyright (C) 2014 Midnitesnake & Andy Davies & Martin Holst Swende | |
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 | // High frequency iClass commands | |
11 | //----------------------------------------------------------------------------- | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <string.h> | |
16 | #include <sys/stat.h> | |
17 | #include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type | |
18 | #include "data.h" | |
19 | #include "proxmark3.h" | |
20 | #include "ui.h" | |
21 | #include "cmdparser.h" | |
22 | #include "cmdhficlass.h" | |
23 | #include "common.h" | |
24 | #include "util.h" | |
25 | #include "cmdmain.h" | |
26 | #include "loclass/des.h" | |
27 | #include "loclass/cipherutils.h" | |
28 | #include "loclass/cipher.h" | |
29 | #include "loclass/ikeys.h" | |
30 | #include "loclass/elite_crack.h" | |
31 | #include "loclass/fileutils.h" | |
32 | #include "protocols.h" | |
33 | ||
34 | static int CmdHelp(const char *Cmd); | |
35 | ||
36 | int xorbits_8(uint8_t val) | |
37 | { | |
38 | uint8_t res = val ^ (val >> 1); //1st pass | |
39 | res = res ^ (res >> 1); // 2nd pass | |
40 | res = res ^ (res >> 2); // 3rd pass | |
41 | res = res ^ (res >> 4); // 4th pass | |
42 | return res & 1; | |
43 | } | |
44 | ||
45 | int CmdHFiClassList(const char *Cmd) | |
46 | { | |
47 | PrintAndLog("Deprecated command, use 'hf list iclass' instead"); | |
48 | return 0; | |
49 | } | |
50 | ||
51 | int CmdHFiClassSnoop(const char *Cmd) | |
52 | { | |
53 | UsbCommand c = {CMD_SNOOP_ICLASS}; | |
54 | SendCommand(&c); | |
55 | return 0; | |
56 | } | |
57 | int usage_hf_iclass_sim() | |
58 | { | |
59 | PrintAndLog("Usage: hf iclass sim <option> [CSN]"); | |
60 | PrintAndLog(" options"); | |
61 | PrintAndLog(" 0 <CSN> simulate the given CSN"); | |
62 | PrintAndLog(" 1 simulate default CSN"); | |
63 | PrintAndLog(" 2 Reader-attack, gather reader responses to extract elite key"); | |
64 | PrintAndLog(" 3 Full simulation using emulator memory (see 'hf iclass eload')"); | |
65 | PrintAndLog(" example: hf iclass sim 0 031FEC8AF7FF12E0"); | |
66 | PrintAndLog(" example: hf iclass sim 2"); | |
67 | PrintAndLog(" example: hf iclass eload 'tagdump.bin'"); | |
68 | PrintAndLog(" hf iclass sim 3"); | |
69 | return 0; | |
70 | } | |
71 | ||
72 | #define NUM_CSNS 15 | |
73 | int CmdHFiClassSim(const char *Cmd) | |
74 | { | |
75 | uint8_t simType = 0; | |
76 | uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0}; | |
77 | ||
78 | if (strlen(Cmd)<1) { | |
79 | return usage_hf_iclass_sim(); | |
80 | } | |
81 | simType = param_get8ex(Cmd, 0, 0, 10); | |
82 | ||
83 | if(simType == 0) | |
84 | { | |
85 | if (param_gethex(Cmd, 1, CSN, 16)) { | |
86 | PrintAndLog("A CSN should consist of 16 HEX symbols"); | |
87 | return usage_hf_iclass_sim(); | |
88 | } | |
89 | ||
90 | PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8)); | |
91 | } | |
92 | if(simType > 3) | |
93 | { | |
94 | PrintAndLog("Undefined simptype %d", simType); | |
95 | return usage_hf_iclass_sim(); | |
96 | } | |
97 | ||
98 | uint8_t numberOfCSNs=0; | |
99 | if(simType == 2) | |
100 | { | |
101 | UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}}; | |
102 | UsbCommand resp = {0}; | |
103 | ||
104 | uint8_t csns[8*NUM_CSNS] = { | |
105 | 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, | |
106 | 0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0, | |
107 | 0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0, | |
108 | 0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0, | |
109 | 0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0, | |
110 | 0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0, | |
111 | 0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0, | |
112 | 0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0, | |
113 | 0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0, | |
114 | 0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0, | |
115 | 0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0, | |
116 | 0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0, | |
117 | 0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0, | |
118 | 0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0, | |
119 | 0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 }; | |
120 | ||
121 | memcpy(c.d.asBytes, csns, 8*NUM_CSNS); | |
122 | ||
123 | SendCommand(&c); | |
124 | if (!WaitForResponseTimeout(CMD_ACK, &resp, -1)) { | |
125 | PrintAndLog("Command timed out"); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | uint8_t num_mac_responses = resp.arg[1]; | |
130 | PrintAndLog("Mac responses: %d MACs obtained (should be %d)", num_mac_responses,NUM_CSNS); | |
131 | ||
132 | size_t datalen = NUM_CSNS*24; | |
133 | /* | |
134 | * Now, time to dump to file. We'll use this format: | |
135 | * <8-byte CSN><8-byte CC><4 byte NR><4 byte MAC>.... | |
136 | * So, it should wind up as | |
137 | * 8 * 24 bytes. | |
138 | * | |
139 | * The returndata from the pm3 is on the following format | |
140 | * <4 byte NR><4 byte MAC> | |
141 | * CC are all zeroes, CSN is the same as was sent in | |
142 | **/ | |
143 | void* dump = malloc(datalen); | |
144 | memset(dump,0,datalen);//<-- Need zeroes for the CC-field | |
145 | uint8_t i = 0; | |
146 | for(i = 0 ; i < NUM_CSNS ; i++) | |
147 | { | |
148 | memcpy(dump+i*24, csns+i*8,8); //CSN | |
149 | //8 zero bytes here... | |
150 | //Then comes NR_MAC (eight bytes from the response) | |
151 | memcpy(dump+i*24+16,resp.d.asBytes+i*8,8); | |
152 | ||
153 | } | |
154 | /** Now, save to dumpfile **/ | |
155 | saveFile("iclass_mac_attack", "bin", dump,datalen); | |
156 | free(dump); | |
157 | }else | |
158 | { | |
159 | UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,numberOfCSNs}}; | |
160 | memcpy(c.d.asBytes, CSN, 8); | |
161 | SendCommand(&c); | |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | int CmdHFiClassReader(const char *Cmd) | |
168 | { | |
169 | UsbCommand c = {CMD_READER_ICLASS, {0}}; | |
170 | SendCommand(&c); | |
171 | UsbCommand resp; | |
172 | while(!ukbhit()){ | |
173 | if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) { | |
174 | uint8_t isOK = resp.arg[0] & 0xff; | |
175 | uint8_t * data = resp.d.asBytes; | |
176 | ||
177 | PrintAndLog("isOk:%02x", isOK); | |
178 | if( isOK == 0){ | |
179 | //Aborted | |
180 | PrintAndLog("Quitting..."); | |
181 | return 0; | |
182 | } | |
183 | if(isOK > 0) | |
184 | { | |
185 | PrintAndLog("CSN: %s",sprint_hex(data,8)); | |
186 | } | |
187 | if(isOK >= 1) | |
188 | { | |
189 | PrintAndLog("CC: %s",sprint_hex(data+8,8)); | |
190 | }else{ | |
191 | PrintAndLog("No CC obtained"); | |
192 | } | |
193 | } else { | |
194 | PrintAndLog("Command execute timeout"); | |
195 | } | |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | int CmdHFiClassReader_Replay(const char *Cmd) | |
202 | { | |
203 | uint8_t readerType = 0; | |
204 | uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00}; | |
205 | ||
206 | if (strlen(Cmd)<1) { | |
207 | PrintAndLog("Usage: hf iclass replay <MAC>"); | |
208 | PrintAndLog(" sample: hf iclass replay 00112233"); | |
209 | return 0; | |
210 | } | |
211 | ||
212 | if (param_gethex(Cmd, 0, MAC, 8)) { | |
213 | PrintAndLog("MAC must include 8 HEX symbols"); | |
214 | return 1; | |
215 | } | |
216 | ||
217 | UsbCommand c = {CMD_READER_ICLASS_REPLAY, {readerType}}; | |
218 | memcpy(c.d.asBytes, MAC, 4); | |
219 | SendCommand(&c); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | int CmdHFiClassReader_Dump(const char *Cmd) | |
225 | { | |
226 | uint8_t readerType = 0; | |
227 | uint8_t MAC[4]={0x00,0x00,0x00,0x00}; | |
228 | uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
229 | uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
230 | uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
231 | //uint8_t CC_temp[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
232 | uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
233 | uint8_t keytable[128] = {0}; | |
234 | int elite = 0; | |
235 | uint8_t *used_key; | |
236 | int i; | |
237 | if (strlen(Cmd)<1) | |
238 | { | |
239 | PrintAndLog("Usage: hf iclass dump <Key> [e]"); | |
240 | PrintAndLog(" Key - A 16 byte master key"); | |
241 | PrintAndLog(" e - If 'e' is specified, the key is interpreted as the 16 byte"); | |
242 | PrintAndLog(" Custom Key (KCus), which can be obtained via reader-attack"); | |
243 | PrintAndLog(" See 'hf iclass sim 2'. This key should be on iclass-format"); | |
244 | PrintAndLog(" sample: hf iclass dump 0011223344556677"); | |
245 | ||
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | if (param_gethex(Cmd, 0, KEY, 16)) | |
251 | { | |
252 | PrintAndLog("KEY must include 16 HEX symbols"); | |
253 | return 1; | |
254 | } | |
255 | ||
256 | if (param_getchar(Cmd, 1) == 'e') | |
257 | { | |
258 | PrintAndLog("Elite switch on"); | |
259 | elite = 1; | |
260 | ||
261 | //calc h2 | |
262 | hash2(KEY, keytable); | |
263 | printarr_human_readable("keytable", keytable, 128); | |
264 | ||
265 | } | |
266 | ||
267 | UsbCommand resp; | |
268 | uint8_t key_sel[8] = {0}; | |
269 | uint8_t key_sel_p[8] = { 0 }; | |
270 | ||
271 | UsbCommand c = {CMD_READER_ICLASS, {0}}; | |
272 | c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC; | |
273 | SendCommand(&c); | |
274 | ||
275 | ||
276 | ||
277 | if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) | |
278 | { | |
279 | PrintAndLog("Command execute timeout"); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | uint8_t isOK = resp.arg[0] & 0xff; | |
284 | uint8_t * data = resp.d.asBytes; | |
285 | ||
286 | memcpy(CSN,data,8); | |
287 | memcpy(CCNR,data+8,8); | |
288 | ||
289 | PrintAndLog("isOk:%02x", isOK); | |
290 | ||
291 | if(isOK > 0) | |
292 | { | |
293 | PrintAndLog("CSN: %s",sprint_hex(CSN,8)); | |
294 | } | |
295 | if(isOK <= 1){ | |
296 | PrintAndLog("Failed to obtain CC! Aborting"); | |
297 | return 0; | |
298 | } | |
299 | //Status 2 or higher | |
300 | ||
301 | if(elite) | |
302 | { | |
303 | //Get the key index (hash1) | |
304 | uint8_t key_index[8] = {0}; | |
305 | ||
306 | hash1(CSN, key_index); | |
307 | printvar("hash1", key_index,8); | |
308 | for(i = 0; i < 8 ; i++) | |
309 | key_sel[i] = keytable[key_index[i]] & 0xFF; | |
310 | PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:"); | |
311 | printvar("k_sel", key_sel,8); | |
312 | //Permute from iclass format to standard format | |
313 | permutekey_rev(key_sel,key_sel_p); | |
314 | used_key = key_sel_p; | |
315 | }else{ | |
316 | used_key = KEY; | |
317 | } | |
318 | ||
319 | PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:"); | |
320 | printvar("Used key",used_key,8); | |
321 | diversifyKey(CSN,used_key, div_key); | |
322 | PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):"); | |
323 | printvar("Div key", div_key, 8); | |
324 | printvar("CC_NR:",CCNR,12); | |
325 | doMAC(CCNR,div_key, MAC); | |
326 | printvar("MAC", MAC, 4); | |
327 | ||
328 | uint8_t iclass_data[32000] = {0}; | |
329 | uint32_t iclass_datalen = 0; | |
330 | uint32_t iclass_blocksFailed = 0;//Set to 1 if dump was incomplete | |
331 | ||
332 | UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}}; | |
333 | memcpy(d.d.asBytes, MAC, 4); | |
334 | clearCommandBuffer(); | |
335 | SendCommand(&d); | |
336 | PrintAndLog("Waiting for device to dump data. Press button on device and key on keyboard to abort..."); | |
337 | while (true) { | |
338 | printf("."); | |
339 | if (ukbhit()) { | |
340 | getchar(); | |
341 | printf("\naborted via keyboard!\n"); | |
342 | break; | |
343 | } | |
344 | if(WaitForResponseTimeout(CMD_ACK,&resp,4500)) | |
345 | { | |
346 | uint32_t dataLength = resp.arg[0]; | |
347 | iclass_blocksFailed |= resp.arg[1]; | |
348 | if(dataLength > 0) | |
349 | { | |
350 | PrintAndLog("Got %d bytes data (total so far %d)" ,dataLength,iclass_datalen); | |
351 | memcpy(iclass_data, resp.d.asBytes,dataLength); | |
352 | iclass_datalen += dataLength; | |
353 | }else | |
354 | {//Last transfer, datalength 0 means the dump is finished | |
355 | PrintAndLog("Dumped %d bytes of data from tag. ", iclass_datalen); | |
356 | if(iclass_blocksFailed) | |
357 | { | |
358 | PrintAndLog("OBS! Some blocks failed to be dumped correctly!"); | |
359 | } | |
360 | if(iclass_datalen > 0) | |
361 | { | |
362 | char filename[100] = {0}; | |
363 | //create a preferred filename | |
364 | snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x", | |
365 | CSN[0],CSN[1],CSN[2],CSN[3], | |
366 | CSN[4],CSN[5],CSN[6],CSN[7]); | |
367 | //Place the div_key in block 3 | |
368 | memcpy(iclass_data+(3*8), div_key, 8); | |
369 | saveFile(filename,"bin",iclass_data, iclass_datalen ); | |
370 | } | |
371 | //Aaaand we're finished | |
372 | return 0; | |
373 | } | |
374 | } | |
375 | } | |
376 | ||
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | int hf_iclass_eload_usage() | |
382 | { | |
383 | PrintAndLog("Loads iclass tag-dump into emulator memory on device"); | |
384 | PrintAndLog("Usage: hf iclass eload f <filename>"); | |
385 | PrintAndLog(""); | |
386 | PrintAndLog("Example: hf iclass eload f iclass_tagdump-aa162d30f8ff12f1.bin"); | |
387 | return 0; | |
388 | ||
389 | } | |
390 | ||
391 | int iclassEmlSetMem(uint8_t *data, int blockNum, int blocksCount) { | |
392 | UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}}; | |
393 | memcpy(c.d.asBytes, data, blocksCount * 16); | |
394 | SendCommand(&c); | |
395 | return 0; | |
396 | } | |
397 | int CmdHFiClassELoad(const char *Cmd) | |
398 | { | |
399 | ||
400 | char opt = param_getchar(Cmd, 0); | |
401 | if (strlen(Cmd)<1 || opt == 'h') | |
402 | return hf_iclass_eload_usage(); | |
403 | ||
404 | //File handling and reading | |
405 | FILE *f; | |
406 | char filename[FILE_PATH_SIZE]; | |
407 | if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0) | |
408 | { | |
409 | f = fopen(filename, "rb"); | |
410 | }else{ | |
411 | return hf_iclass_eload_usage(); | |
412 | } | |
413 | ||
414 | if(!f) { | |
415 | PrintAndLog("Failed to read from file '%s'", filename); | |
416 | return 1; | |
417 | } | |
418 | ||
419 | fseek(f, 0, SEEK_END); | |
420 | long fsize = ftell(f); | |
421 | fseek(f, 0, SEEK_SET); | |
422 | ||
423 | uint8_t *dump = malloc(fsize); | |
424 | ||
425 | ||
426 | size_t bytes_read = fread(dump, 1, fsize, f); | |
427 | fclose(f); | |
428 | ||
429 | printIclassDumpInfo(dump); | |
430 | //Validate | |
431 | ||
432 | if (bytes_read < fsize) | |
433 | { | |
434 | prnlog("Error, could only read %d bytes (should be %d)",bytes_read, fsize ); | |
435 | free(dump); | |
436 | return 1; | |
437 | } | |
438 | //Send to device | |
439 | uint32_t bytes_sent = 0; | |
440 | uint32_t bytes_remaining = bytes_read; | |
441 | ||
442 | while(bytes_remaining > 0){ | |
443 | uint32_t bytes_in_packet = MIN(USB_CMD_DATA_SIZE, bytes_remaining); | |
444 | UsbCommand c = {CMD_ICLASS_EML_MEMSET, {bytes_sent,bytes_in_packet,0}}; | |
445 | memcpy(c.d.asBytes, dump, bytes_in_packet); | |
446 | SendCommand(&c); | |
447 | bytes_remaining -= bytes_in_packet; | |
448 | bytes_sent += bytes_in_packet; | |
449 | } | |
450 | free(dump); | |
451 | PrintAndLog("Sent %d bytes of data to device emulator memory", bytes_sent); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | int usage_hf_iclass_decrypt() | |
456 | { | |
457 | PrintAndLog("Usage: hf iclass decrypt f <tagdump> o "); | |
458 | PrintAndLog(""); | |
459 | PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside"); | |
460 | PrintAndLog("in the working directory. The file should be 16 bytes binary data"); | |
461 | PrintAndLog(""); | |
462 | PrintAndLog("example: hf iclass decrypt f tagdump_12312342343.bin"); | |
463 | PrintAndLog(""); | |
464 | PrintAndLog("OBS! This is pretty stupid implementation, it tries to decrypt every block after block 6. "); | |
465 | PrintAndLog("Correct behaviour would be to decrypt only the application areas where the key is valid,"); | |
466 | PrintAndLog("which is defined by the configuration block."); | |
467 | return 1; | |
468 | } | |
469 | ||
470 | int readKeyfile(const char *filename, size_t len, uint8_t* buffer) | |
471 | { | |
472 | FILE *f = fopen(filename, "rb"); | |
473 | if(!f) { | |
474 | PrintAndLog("Failed to read from file '%s'", filename); | |
475 | return 1; | |
476 | } | |
477 | fseek(f, 0, SEEK_END); | |
478 | long fsize = ftell(f); | |
479 | fseek(f, 0, SEEK_SET); | |
480 | size_t bytes_read = fread(buffer, 1, len, f); | |
481 | fclose(f); | |
482 | if(fsize != len) | |
483 | { | |
484 | PrintAndLog("Warning, file size is %d, expected %d", fsize, len); | |
485 | return 1; | |
486 | } | |
487 | if(bytes_read != len) | |
488 | { | |
489 | PrintAndLog("Warning, could only read %d bytes, expected %d" ,bytes_read, len); | |
490 | return 1; | |
491 | } | |
492 | return 0; | |
493 | } | |
494 | ||
495 | int CmdHFiClassDecrypt(const char *Cmd) | |
496 | { | |
497 | uint8_t key[16] = { 0 }; | |
498 | if(readKeyfile("iclass_decryptionkey.bin", 16, key)) | |
499 | { | |
500 | usage_hf_iclass_decrypt(); | |
501 | return 1; | |
502 | } | |
503 | PrintAndLog("Decryption file found... "); | |
504 | char opt = param_getchar(Cmd, 0); | |
505 | if (strlen(Cmd)<1 || opt == 'h') | |
506 | return usage_hf_iclass_decrypt(); | |
507 | ||
508 | //Open the tagdump-file | |
509 | FILE *f; | |
510 | char filename[FILE_PATH_SIZE]; | |
511 | if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0) | |
512 | { | |
513 | f = fopen(filename, "rb"); | |
514 | }else{ | |
515 | return usage_hf_iclass_decrypt(); | |
516 | } | |
517 | ||
518 | fseek(f, 0, SEEK_END); | |
519 | long fsize = ftell(f); | |
520 | fseek(f, 0, SEEK_SET); | |
521 | uint8_t enc_dump[8] = {0}; | |
522 | uint8_t *decrypted = malloc(fsize); | |
523 | des3_context ctx = { DES_DECRYPT ,{ 0 } }; | |
524 | des3_set2key_dec( &ctx, key); | |
525 | size_t bytes_read = fread(enc_dump, 1, 8, f); | |
526 | ||
527 | //Use the first block (CSN) for filename | |
528 | char outfilename[FILE_PATH_SIZE] = { 0 }; | |
529 | snprintf(outfilename,FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x-decrypted", | |
530 | enc_dump[0],enc_dump[1],enc_dump[2],enc_dump[3], | |
531 | enc_dump[4],enc_dump[5],enc_dump[6],enc_dump[7]); | |
532 | ||
533 | size_t blocknum =0; | |
534 | while(bytes_read == 8) | |
535 | { | |
536 | if(blocknum < 7) | |
537 | { | |
538 | memcpy(decrypted+(blocknum*8), enc_dump, 8); | |
539 | }else{ | |
540 | des3_crypt_ecb(&ctx, enc_dump,decrypted +(blocknum*8) ); | |
541 | } | |
542 | printvar("decrypted block", decrypted +(blocknum*8), 8); | |
543 | bytes_read = fread(enc_dump, 1, 8, f); | |
544 | blocknum++; | |
545 | } | |
546 | fclose(f); | |
547 | ||
548 | saveFile(outfilename,"bin", decrypted, blocknum*8); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | int CmdHFiClass_iso14443A_write(const char *Cmd) | |
554 | { | |
555 | uint8_t readerType = 0; | |
556 | uint8_t MAC[4]={0x00,0x00,0x00,0x00}; | |
557 | uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
558 | uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
559 | uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
560 | uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; | |
561 | ||
562 | uint8_t blockNo=0; | |
563 | uint8_t bldata[8]={0}; | |
564 | ||
565 | if (strlen(Cmd)<3) | |
566 | { | |
567 | PrintAndLog("Usage: hf iclass write <Key> <Block> <Data>"); | |
568 | PrintAndLog(" sample: hf iclass write 0011223344556677 10 AAAAAAAAAAAAAAAA"); | |
569 | return 0; | |
570 | } | |
571 | ||
572 | if (param_gethex(Cmd, 0, KEY, 16)) | |
573 | { | |
574 | PrintAndLog("KEY must include 16 HEX symbols"); | |
575 | return 1; | |
576 | } | |
577 | ||
578 | blockNo = param_get8(Cmd, 1); | |
579 | if (blockNo>32) | |
580 | { | |
581 | PrintAndLog("Error: Maximum number of blocks is 32 for iClass 2K Cards!"); | |
582 | return 1; | |
583 | } | |
584 | if (param_gethex(Cmd, 2, bldata, 8)) | |
585 | { | |
586 | PrintAndLog("Block data must include 8 HEX symbols"); | |
587 | return 1; | |
588 | } | |
589 | ||
590 | UsbCommand c = {CMD_ICLASS_ISO14443A_WRITE, {0}}; | |
591 | SendCommand(&c); | |
592 | UsbCommand resp; | |
593 | ||
594 | if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) { | |
595 | uint8_t isOK = resp.arg[0] & 0xff; | |
596 | uint8_t * data = resp.d.asBytes; | |
597 | ||
598 | memcpy(CSN,data,8); | |
599 | memcpy(CCNR,data+8,8); | |
600 | PrintAndLog("DEBUG: %s",sprint_hex(CSN,8)); | |
601 | PrintAndLog("DEBUG: %s",sprint_hex(CCNR,8)); | |
602 | PrintAndLog("isOk:%02x", isOK); | |
603 | } else { | |
604 | PrintAndLog("Command execute timeout"); | |
605 | } | |
606 | ||
607 | diversifyKey(CSN,KEY, div_key); | |
608 | ||
609 | PrintAndLog("Div Key: %s",sprint_hex(div_key,8)); | |
610 | doMAC(CCNR, div_key, MAC); | |
611 | ||
612 | UsbCommand c2 = {CMD_ICLASS_ISO14443A_WRITE, {readerType,blockNo}}; | |
613 | memcpy(c2.d.asBytes, bldata, 8); | |
614 | memcpy(c2.d.asBytes+8, MAC, 4); | |
615 | SendCommand(&c2); | |
616 | ||
617 | if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { | |
618 | uint8_t isOK = resp.arg[0] & 0xff; | |
619 | uint8_t * data = resp.d.asBytes; | |
620 | ||
621 | if (isOK) | |
622 | PrintAndLog("isOk:%02x data:%s", isOK, sprint_hex(data, 4)); | |
623 | else | |
624 | PrintAndLog("isOk:%02x", isOK); | |
625 | } else { | |
626 | PrintAndLog("Command execute timeout"); | |
627 | } | |
628 | return 0; | |
629 | } | |
630 | int CmdHFiClass_loclass(const char *Cmd) | |
631 | { | |
632 | char opt = param_getchar(Cmd, 0); | |
633 | ||
634 | if (strlen(Cmd)<1 || opt == 'h') { | |
635 | PrintAndLog("Usage: hf iclass loclass [options]"); | |
636 | PrintAndLog("Options:"); | |
637 | PrintAndLog("h Show this help"); | |
638 | PrintAndLog("t Perform self-test"); | |
639 | PrintAndLog("f <filename> Bruteforce iclass dumpfile"); | |
640 | PrintAndLog(" An iclass dumpfile is assumed to consist of an arbitrary number of"); | |
641 | PrintAndLog(" malicious CSNs, and their protocol responses"); | |
642 | PrintAndLog(" The the binary format of the file is expected to be as follows: "); | |
643 | PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); | |
644 | PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); | |
645 | PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); | |
646 | PrintAndLog(" ... totalling N*24 bytes"); | |
647 | return 0; | |
648 | } | |
649 | char fileName[255] = {0}; | |
650 | if(opt == 'f') | |
651 | { | |
652 | if(param_getstr(Cmd, 1, fileName) > 0) | |
653 | { | |
654 | return bruteforceFileNoKeys(fileName); | |
655 | }else | |
656 | { | |
657 | PrintAndLog("You must specify a filename"); | |
658 | } | |
659 | } | |
660 | else if(opt == 't') | |
661 | { | |
662 | int errors = testCipherUtils(); | |
663 | errors += testMAC(); | |
664 | errors += doKeyTests(0); | |
665 | errors += testElite(); | |
666 | if(errors) | |
667 | { | |
668 | prnlog("OBS! There were errors!!!"); | |
669 | } | |
670 | return errors; | |
671 | } | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | static command_t CommandTable[] = | |
677 | { | |
678 | {"help", CmdHelp, 1, "This help"}, | |
679 | {"list", CmdHFiClassList, 0, "[Deprecated] List iClass history"}, | |
680 | {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"}, | |
681 | {"sim", CmdHFiClassSim, 0, "Simulate iClass tag"}, | |
682 | {"reader",CmdHFiClassReader, 0, "Read an iClass tag"}, | |
683 | {"replay",CmdHFiClassReader_Replay, 0, "Read an iClass tag via Reply Attack"}, | |
684 | {"dump", CmdHFiClassReader_Dump, 0, "Authenticate and Dump iClass tag"}, | |
685 | // {"write", CmdHFiClass_iso14443A_write, 0, "Authenticate and Write iClass block"}, | |
686 | {"loclass", CmdHFiClass_loclass, 1, "Use loclass to perform bruteforce of reader attack dump"}, | |
687 | {"eload", CmdHFiClassELoad, 0, "[experimental] Load data into iclass emulator memory"}, | |
688 | {"decrypt", CmdHFiClassDecrypt, 1, "Decrypt tagdump" }, | |
689 | {NULL, NULL, 0, NULL} | |
690 | }; | |
691 | ||
692 | int CmdHFiClass(const char *Cmd) | |
693 | { | |
694 | CmdsParse(CommandTable, Cmd); | |
695 | return 0; | |
696 | } | |
697 | ||
698 | int CmdHelp(const char *Cmd) | |
699 | { | |
700 | CmdsHelp(CommandTable); | |
701 | return 0; | |
702 | } |