]>
Commit | Line | Data |
---|---|---|
b62a5a84 | 1 | // Merlok, 2011, 2012\r |
f397b5cc M |
2 | // people from mifare@nethemba.com, 2010\r |
3 | //\r | |
4 | // This code is licensed to you under the terms of the GNU GPL, version 2 or,\r | |
5 | // at your option, any later version. See the LICENSE.txt file for the text of\r | |
6 | // the license.\r | |
7 | //-----------------------------------------------------------------------------\r | |
55acbb2a | 8 | // mifare commands\r |
f397b5cc M |
9 | //-----------------------------------------------------------------------------\r |
10 | \r | |
11 | #include <stdio.h>\r | |
873014de | 12 | #include <stdlib.h> \r |
31b6e9af | 13 | #include <string.h>\r |
9492e0b0 | 14 | #include <pthread.h>\r |
f397b5cc | 15 | #include "mifarehost.h"\r |
902cb3c0 | 16 | #include "proxmark3.h"\r |
c9f8bc53 | 17 | //#include "radixsort.h"\r |
838c15a6 | 18 | #include <time.h>\r |
f397b5cc | 19 | \r |
55acbb2a | 20 | // MIFARE\r |
f397b5cc | 21 | int compar_int(const void * a, const void * b) {\r |
9492e0b0 | 22 | // didn't work: (the result is truncated to 32 bits)\r |
23 | //return (*(uint64_t*)b - *(uint64_t*)a);\r | |
24 | \r | |
25 | // better:\r | |
6b10e329 | 26 | if (*(uint64_t*)b > *(uint64_t*)a) return 1;\r |
838c15a6 | 27 | if (*(uint64_t*)b < *(uint64_t*)a) return -1; \r |
6b10e329 | 28 | return 0;\r |
838c15a6 | 29 | \r |
30 | //return (*(uint64_t*)b > *(uint64_t*)a) - (*(uint64_t*)b < *(uint64_t*)a);\r | |
f397b5cc M |
31 | }\r |
32 | \r | |
9492e0b0 | 33 | // Compare 16 Bits out of cryptostate\r |
34 | int Compare16Bits(const void * a, const void * b) {\r | |
6b10e329 | 35 | if ((*(uint64_t*)b & 0x00ff000000ff0000) > (*(uint64_t*)a & 0x00ff000000ff0000)) return 1; \r |
838c15a6 | 36 | if ((*(uint64_t*)b & 0x00ff000000ff0000) < (*(uint64_t*)a & 0x00ff000000ff0000)) return -1;\r |
6b10e329 | 37 | return 0;\r |
838c15a6 | 38 | \r |
39 | /* return \r | |
d294f582 | 40 | ((*(uint64_t*)b & 0x00ff000000ff0000) > (*(uint64_t*)a & 0x00ff000000ff0000))\r |
41 | -\r | |
42 | ((*(uint64_t*)b & 0x00ff000000ff0000) < (*(uint64_t*)a & 0x00ff000000ff0000))\r | |
43 | ;\r | |
838c15a6 | 44 | */\r |
f397b5cc M |
45 | }\r |
46 | \r | |
9492e0b0 | 47 | typedef \r |
48 | struct {\r | |
49 | union {\r | |
50 | struct Crypto1State *slhead;\r | |
51 | uint64_t *keyhead;\r | |
3f7c993d | 52 | } head;\r |
9492e0b0 | 53 | union {\r |
54 | struct Crypto1State *sltail;\r | |
55 | uint64_t *keytail;\r | |
3f7c993d | 56 | } tail;\r |
9492e0b0 | 57 | uint32_t len;\r |
58 | uint32_t uid;\r | |
59 | uint32_t blockNo;\r | |
60 | uint32_t keyType;\r | |
61 | uint32_t nt;\r | |
62 | uint32_t ks1;\r | |
63 | } StateList_t;\r | |
64 | \r | |
65 | \r | |
66 | // wrapper function for multi-threaded lfsr_recovery32\r | |
67 | void* nested_worker_thread(void *arg)\r | |
68 | {\r | |
69 | struct Crypto1State *p1;\r | |
70 | StateList_t *statelist = arg;\r | |
b882b543 | 71 | statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid); \r |
d294f582 | 72 | \r |
6b10e329 | 73 | for (p1 = statelist->head.slhead; *(uint64_t *)p1 != 0; p1++);\r |
d294f582 | 74 | \r |
3f7c993d | 75 | statelist->len = p1 - statelist->head.slhead;\r |
76 | statelist->tail.sltail = --p1;\r | |
77 | qsort(statelist->head.slhead, statelist->len, sizeof(uint64_t), Compare16Bits);\r | |
3f7c993d | 78 | return statelist->head.slhead;\r |
f397b5cc M |
79 | }\r |
80 | \r | |
9492e0b0 | 81 | int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate) \r |
f397b5cc | 82 | {\r |
c830303d | 83 | uint16_t i;\r |
f397b5cc | 84 | uint32_t uid;\r |
902cb3c0 | 85 | UsbCommand resp;\r |
9492e0b0 | 86 | StateList_t statelists[2];\r |
87 | struct Crypto1State *p1, *p2, *p3, *p4;\r | |
88 | \r | |
9492e0b0 | 89 | UsbCommand c = {CMD_MIFARE_NESTED, {blockNo + keyType * 0x100, trgBlockNo + trgKeyType * 0x100, calibrate}};\r |
f397b5cc | 90 | memcpy(c.d.asBytes, key, 6);\r |
952f3dc7 | 91 | clearCommandBuffer();\r |
9492e0b0 | 92 | SendCommand(&c);\r |
952f3dc7 | 93 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1;\r |
c830303d | 94 | \r |
952f3dc7 | 95 | // error during nested\r |
96 | if (resp.arg[0]) return resp.arg[0];\r | |
97 | \r | |
b882b543 | 98 | memcpy(&uid, resp.d.asBytes, 4);\r |
6b10e329 | 99 | \r |
100 | for (i = 0; i < 2; i++) {\r | |
0de8e387 | 101 | statelists[i].blockNo = resp.arg[2] & 0xff;\r |
102 | statelists[i].keyType = (resp.arg[2] >> 8) & 0xff;\r | |
103 | statelists[i].uid = uid;\r | |
104 | memcpy(&statelists[i].nt, (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4);\r | |
105 | memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4);\r | |
106 | }\r | |
f397b5cc | 107 | \r |
d294f582 | 108 | // calc keys \r |
9492e0b0 | 109 | pthread_t thread_id[2];\r |
110 | \r | |
111 | // create and run worker threads\r | |
d294f582 | 112 | for (i = 0; i < 2; i++)\r |
9492e0b0 | 113 | pthread_create(thread_id + i, NULL, nested_worker_thread, &statelists[i]);\r |
6b10e329 | 114 | \r |
9492e0b0 | 115 | // wait for threads to terminate:\r |
d294f582 | 116 | for (i = 0; i < 2; i++)\r |
3f7c993d | 117 | pthread_join(thread_id[i], (void*)&statelists[i].head.slhead);\r |
f397b5cc | 118 | \r |
9492e0b0 | 119 | // the first 16 Bits of the cryptostate already contain part of our key.\r |
120 | // Create the intersection of the two lists based on these 16 Bits and\r | |
121 | // roll back the cryptostate\r | |
3f7c993d | 122 | p1 = p3 = statelists[0].head.slhead; \r |
123 | p2 = p4 = statelists[1].head.slhead;\r | |
6b10e329 | 124 | \r |
3f7c993d | 125 | while (p1 <= statelists[0].tail.sltail && p2 <= statelists[1].tail.sltail) {\r |
9492e0b0 | 126 | if (Compare16Bits(p1, p2) == 0) {\r |
6b10e329 | 127 | \r |
9492e0b0 | 128 | struct Crypto1State savestate, *savep = &savestate;\r |
129 | savestate = *p1;\r | |
3f7c993d | 130 | while(Compare16Bits(p1, savep) == 0 && p1 <= statelists[0].tail.sltail) {\r |
9492e0b0 | 131 | *p3 = *p1;\r |
132 | lfsr_rollback_word(p3, statelists[0].nt ^ statelists[0].uid, 0);\r | |
133 | p3++;\r | |
134 | p1++;\r | |
135 | }\r | |
136 | savestate = *p2;\r | |
3f7c993d | 137 | while(Compare16Bits(p2, savep) == 0 && p2 <= statelists[1].tail.sltail) {\r |
9492e0b0 | 138 | *p4 = *p2;\r |
139 | lfsr_rollback_word(p4, statelists[1].nt ^ statelists[1].uid, 0);\r | |
140 | p4++;\r | |
141 | p2++;\r | |
142 | }\r | |
143 | }\r | |
144 | else {\r | |
145 | while (Compare16Bits(p1, p2) == -1) p1++;\r | |
146 | while (Compare16Bits(p1, p2) == 1) p2++;\r | |
147 | }\r | |
f397b5cc | 148 | }\r |
838c15a6 | 149 | \r |
9492e0b0 | 150 | p3->even = 0; p3->odd = 0;\r |
151 | p4->even = 0; p4->odd = 0;\r | |
3f7c993d | 152 | statelists[0].len = p3 - statelists[0].head.slhead;\r |
153 | statelists[1].len = p4 - statelists[1].head.slhead;\r | |
154 | statelists[0].tail.sltail=--p3;\r | |
155 | statelists[1].tail.sltail=--p4;\r | |
9492e0b0 | 156 | \r |
157 | // the statelists now contain possible keys. The key we are searching for must be in the\r | |
158 | // intersection of both lists. Create the intersection:\r | |
3f7c993d | 159 | qsort(statelists[0].head.keyhead, statelists[0].len, sizeof(uint64_t), compar_int);\r |
160 | qsort(statelists[1].head.keyhead, statelists[1].len, sizeof(uint64_t), compar_int);\r | |
838c15a6 | 161 | \r |
9492e0b0 | 162 | uint64_t *p5, *p6, *p7;\r |
3f7c993d | 163 | p5 = p7 = statelists[0].head.keyhead; \r |
164 | p6 = statelists[1].head.keyhead;\r | |
838c15a6 | 165 | \r |
3f7c993d | 166 | while (p5 <= statelists[0].tail.keytail && p6 <= statelists[1].tail.keytail) {\r |
9492e0b0 | 167 | if (compar_int(p5, p6) == 0) {\r |
168 | *p7++ = *p5++;\r | |
169 | p6++;\r | |
170 | }\r | |
171 | else {\r | |
172 | while (compar_int(p5, p6) == -1) p5++;\r | |
173 | while (compar_int(p5, p6) == 1) p6++;\r | |
174 | }\r | |
175 | }\r | |
3f7c993d | 176 | statelists[0].len = p7 - statelists[0].head.keyhead;\r |
d294f582 | 177 | statelists[0].tail.keytail = --p7;\r |
9492e0b0 | 178 | \r |
838c15a6 | 179 | uint32_t numOfCandidates = statelists[0].len;\r |
180 | if ( numOfCandidates == 0 ) goto out;\r | |
181 | \r | |
9492e0b0 | 182 | memset(resultKey, 0, 6);\r |
d294f582 | 183 | uint64_t key64 = 0;\r |
184 | \r | |
9492e0b0 | 185 | // The list may still contain several key candidates. Test each of them with mfCheckKeys\r |
6b10e329 | 186 | // uint32_t max_keys = keycnt > (USB_CMD_DATA_SIZE/6) ? (USB_CMD_DATA_SIZE/6) : keycnt;\r |
838c15a6 | 187 | uint8_t keyBlock[USB_CMD_DATA_SIZE] = {0x00};\r |
d294f582 | 188 | \r |
838c15a6 | 189 | for (i = 0; i < numOfCandidates; ++i){\r |
190 | crypto1_get_lfsr(statelists[0].head.slhead + i, &key64);\r | |
191 | num_to_bytes(key64, 6, keyBlock + i * 6);\r | |
192 | }\r | |
6b10e329 | 193 | \r |
838c15a6 | 194 | if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, false, numOfCandidates, keyBlock, &key64)) { \r |
195 | free(statelists[0].head.slhead);\r | |
196 | free(statelists[1].head.slhead);\r | |
197 | num_to_bytes(key64, 6, resultKey);\r | |
d294f582 | 198 | \r |
838c15a6 | 199 | PrintAndLog("UID: %08x target block:%3u key type: %c -- Found key [%012"llx"]",\r |
200 | uid,\r | |
201 | (uint16_t)resp.arg[2] & 0xff,\r | |
202 | (resp.arg[2] >> 8) ? 'B' : 'A',\r | |
203 | key64\r | |
204 | );\r | |
205 | return -5;\r | |
9492e0b0 | 206 | }\r |
838c15a6 | 207 | \r |
208 | out:\r | |
6b10e329 | 209 | PrintAndLog("UID: %08x target block:%3u key type: %c",\r |
b882b543 | 210 | uid,\r |
6b10e329 | 211 | (uint16_t)resp.arg[2] & 0xff,\r |
212 | (resp.arg[2] >> 8) ? 'B' : 'A'\r | |
213 | ); \r | |
214 | \r | |
3f7c993d | 215 | free(statelists[0].head.slhead);\r |
d294f582 | 216 | free(statelists[1].head.slhead);\r |
217 | return -4;\r | |
f397b5cc M |
218 | }\r |
219 | \r | |
b10a759f | 220 | int mfCheckKeys (uint8_t blockNo, uint8_t keyType, bool clear_trace, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r |
f397b5cc | 221 | *key = 0;\r |
d294f582 | 222 | UsbCommand c = {CMD_MIFARE_CHKKEYS, { (blockNo | (keyType<<8)), clear_trace, keycnt}};\r |
f397b5cc | 223 | memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r |
0de8e387 | 224 | clearCommandBuffer();\r |
9492e0b0 | 225 | SendCommand(&c);\r |
902cb3c0 | 226 | UsbCommand resp;\r |
01c78dab | 227 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)) return 1;\r |
902cb3c0 | 228 | if ((resp.arg[0] & 0xff) != 0x01) return 2;\r |
229 | *key = bytes_to_num(resp.d.asBytes, 6);\r | |
f397b5cc M |
230 | return 0;\r |
231 | }\r | |
8556b852 | 232 | \r |
55acbb2a M |
233 | // EMULATOR\r |
234 | \r | |
8556b852 | 235 | int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r |
545a1f38 | 236 | UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};\r |
0de8e387 | 237 | clearCommandBuffer();\r |
902cb3c0 | 238 | SendCommand(&c);\r |
5c065fa0 | 239 | UsbCommand resp;\r |
902cb3c0 | 240 | if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1;\r |
241 | memcpy(data, resp.d.asBytes, blocksCount * 16);\r | |
8556b852 M |
242 | return 0;\r |
243 | }\r | |
244 | \r | |
245 | int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r | |
0de8e387 | 246 | return mfEmlSetMem_xt(data, blockNum, blocksCount, 16);\r |
247 | }\r | |
248 | \r | |
249 | int mfEmlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {\r | |
250 | UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, blockBtWidth}};\r | |
251 | memcpy(c.d.asBytes, data, blocksCount * blockBtWidth); \r | |
252 | \r | |
253 | clearCommandBuffer();\r | |
545a1f38 | 254 | SendCommand(&c);\r |
8556b852 M |
255 | return 0;\r |
256 | }\r | |
257 | \r | |
55acbb2a M |
258 | // "MAGIC" CARD\r |
259 | \r | |
c2731f37 | 260 | int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, uint8_t wipecard) {\r |
3bba7dea | 261 | \r |
c2731f37 | 262 | uint8_t params = MAGIC_SINGLE;\r |
263 | uint8_t block0[16];\r | |
264 | memset(block0, 0x00, sizeof(block0));\r | |
c2731f37 | 265 | \r |
266 | int old = mfCGetBlock(0, block0, params);\r | |
d294f582 | 267 | if (old == 0)\r |
c2731f37 | 268 | PrintAndLog("old block 0: %s", sprint_hex(block0, sizeof(block0)));\r |
d294f582 | 269 | else \r |
270 | PrintAndLog("Couldn't get old data. Will write over the last bytes of Block 0."); \r | |
3bba7dea JH |
271 | \r |
272 | // fill in the new values\r | |
273 | // UID\r | |
274 | memcpy(block0, uid, 4); \r | |
275 | // Mifare UID BCC\r | |
276 | block0[4] = block0[0]^block0[1]^block0[2]^block0[3];\r | |
277 | // mifare classic SAK(byte 5) and ATQA(byte 6 and 7, reversed)\r | |
c2731f37 | 278 | if ( sak != NULL )\r |
3bba7dea | 279 | block0[5]=sak[0];\r |
c2731f37 | 280 | \r |
281 | if ( atqa != NULL ) {\r | |
3bba7dea JH |
282 | block0[6]=atqa[1];\r |
283 | block0[7]=atqa[0];\r | |
80b1b53f | 284 | }\r |
3bba7dea | 285 | PrintAndLog("new block 0: %s", sprint_hex(block0,16));\r |
c2731f37 | 286 | \r |
287 | if ( wipecard ) params |= MAGIC_WIPE; \r | |
288 | if ( oldUID == NULL) params |= MAGIC_UID;\r | |
289 | \r | |
290 | return mfCSetBlock(0, block0, oldUID, params);\r | |
f774db95 M |
291 | }\r |
292 | \r | |
c2731f37 | 293 | int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, uint8_t params) {\r |
0675f200 | 294 | \r |
1b492a97 | 295 | uint8_t isOK = 0;\r |
c2731f37 | 296 | UsbCommand c = {CMD_MIFARE_CSETBLOCK, {params, blockNo, 0}};\r |
f774db95 | 297 | memcpy(c.d.asBytes, data, 16); \r |
0de8e387 | 298 | clearCommandBuffer();\r |
299 | SendCommand(&c);\r | |
1b492a97 | 300 | UsbCommand resp;\r |
c2731f37 | 301 | if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {\r |
902cb3c0 | 302 | isOK = resp.arg[0] & 0xff;\r |
80b1b53f | 303 | if (uid != NULL) \r |
304 | memcpy(uid, resp.d.asBytes, 4);\r | |
305 | if (!isOK) \r | |
306 | return 2;\r | |
0675f200 M |
307 | } else {\r |
308 | PrintAndLog("Command execute timeout");\r | |
309 | return 1;\r | |
310 | }\r | |
311 | return 0;\r | |
312 | }\r | |
545a1f38 M |
313 | \r |
314 | int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {\r | |
315 | uint8_t isOK = 0;\r | |
c2731f37 | 316 | UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, blockNo, 0}}; \r |
0de8e387 | 317 | clearCommandBuffer();\r |
545a1f38 | 318 | SendCommand(&c);\r |
0de8e387 | 319 | UsbCommand resp;\r |
902cb3c0 | 320 | if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r |
321 | isOK = resp.arg[0] & 0xff;\r | |
322 | memcpy(data, resp.d.asBytes, 16);\r | |
545a1f38 M |
323 | if (!isOK) return 2;\r |
324 | } else {\r | |
325 | PrintAndLog("Command execute timeout");\r | |
326 | return 1;\r | |
327 | }\r | |
328 | return 0;\r | |
329 | }\r | |
55acbb2a M |
330 | \r |
331 | // SNIFFER\r | |
332 | \r | |
e0c635d1 M |
333 | // constants\r |
334 | static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00};\r | |
335 | \r | |
55acbb2a | 336 | // variables\r |
e4691591 | 337 | char logHexFileName[FILE_PATH_SIZE] = {0x00};\r |
e0c635d1 | 338 | static uint8_t traceCard[4096] = {0x00};\r |
e4691591 | 339 | static char traceFileName[FILE_PATH_SIZE] = {0x00};\r |
55acbb2a M |
340 | static int traceState = TRACE_IDLE;\r |
341 | static uint8_t traceCurBlock = 0;\r | |
342 | static uint8_t traceCurKey = 0;\r | |
343 | \r | |
344 | struct Crypto1State *traceCrypto1 = NULL;\r | |
345 | \r | |
046fd766 | 346 | struct Crypto1State *revstate = NULL;\r |
347 | \r | |
348 | uint64_t key = 0;\r | |
349 | uint32_t ks2 = 0;\r | |
350 | uint32_t ks3 = 0;\r | |
55acbb2a | 351 | \r |
046fd766 | 352 | uint32_t uid = 0; // serial number\r |
353 | uint32_t nt =0; // tag challenge\r | |
354 | uint32_t nr_enc =0; // encrypted reader challenge\r | |
355 | uint32_t ar_enc =0; // encrypted reader response\r | |
356 | uint32_t at_enc =0; // encrypted tag response\r | |
55acbb2a | 357 | \r |
e0c635d1 M |
358 | int isTraceCardEmpty(void) {\r |
359 | return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));\r | |
360 | }\r | |
55acbb2a | 361 | \r |
e0c635d1 M |
362 | int isBlockEmpty(int blockN) {\r |
363 | for (int i = 0; i < 16; i++) \r | |
364 | if (traceCard[blockN * 16 + i] != 0) return 0;\r | |
55acbb2a | 365 | \r |
e0c635d1 M |
366 | return 1;\r |
367 | }\r | |
368 | \r | |
369 | int isBlockTrailer(int blockN) {\r | |
d294f582 | 370 | return ((blockN & 0x03) == 0x03);\r |
e0c635d1 M |
371 | }\r |
372 | \r | |
373 | int loadTraceCard(uint8_t *tuid) {\r | |
374 | FILE * f;\r | |
80b1b53f | 375 | char buf[64] = {0x00};\r |
376 | uint8_t buf8[64] = {0x00};\r | |
e0c635d1 M |
377 | int i, blockNum;\r |
378 | \r | |
80b1b53f | 379 | if (!isTraceCardEmpty()) \r |
380 | saveTraceCard();\r | |
381 | \r | |
55acbb2a M |
382 | memset(traceCard, 0x00, 4096);\r |
383 | memcpy(traceCard, tuid + 3, 4);\r | |
80b1b53f | 384 | \r |
e0c635d1 M |
385 | FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r |
386 | \r | |
387 | f = fopen(traceFileName, "r");\r | |
664bb5ae | 388 | if (!f) return 1;\r |
e0c635d1 M |
389 | \r |
390 | blockNum = 0;\r | |
e4691591 | 391 | \r |
e0c635d1 | 392 | while(!feof(f)){\r |
e4691591 | 393 | \r |
e0c635d1 | 394 | memset(buf, 0, sizeof(buf));\r |
759c16b3 | 395 | if (fgets(buf, sizeof(buf), f) == NULL) {\r |
046fd766 | 396 | PrintAndLog("File reading error.");\r |
1b492a97 | 397 | fclose(f);\r |
759c16b3 | 398 | return 2;\r |
046fd766 | 399 | }\r |
e0c635d1 M |
400 | \r |
401 | if (strlen(buf) < 32){\r | |
402 | if (feof(f)) break;\r | |
403 | PrintAndLog("File content error. Block data must include 32 HEX symbols");\r | |
1b492a97 | 404 | fclose(f);\r |
e0c635d1 M |
405 | return 2;\r |
406 | }\r | |
407 | for (i = 0; i < 32; i += 2)\r | |
408 | sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r | |
409 | \r | |
410 | memcpy(traceCard + blockNum * 16, buf8, 16);\r | |
411 | \r | |
412 | blockNum++;\r | |
413 | }\r | |
414 | fclose(f);\r | |
415 | \r | |
416 | return 0;\r | |
417 | }\r | |
418 | \r | |
419 | int saveTraceCard(void) {\r | |
420 | FILE * f;\r | |
421 | \r | |
422 | if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;\r | |
423 | \r | |
424 | f = fopen(traceFileName, "w+");\r | |
664bb5ae | 425 | if ( !f ) return 1;\r |
e4691591 | 426 | \r |
e0c635d1 M |
427 | for (int i = 0; i < 64; i++) { // blocks\r |
428 | for (int j = 0; j < 16; j++) // bytes\r | |
429 | fprintf(f, "%02x", *(traceCard + i * 16 + j)); \r | |
430 | fprintf(f,"\n");\r | |
431 | }\r | |
432 | fclose(f);\r | |
e0c635d1 M |
433 | return 0;\r |
434 | }\r | |
435 | \r | |
436 | int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {\r | |
437 | \r | |
80b1b53f | 438 | if (traceCrypto1) \r |
439 | crypto1_destroy(traceCrypto1);\r | |
440 | \r | |
e0c635d1 M |
441 | traceCrypto1 = NULL;\r |
442 | \r | |
80b1b53f | 443 | if (wantSaveToEmlFile) \r |
444 | loadTraceCard(tuid);\r | |
445 | \r | |
55acbb2a M |
446 | traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3];\r |
447 | traceCard[5] = sak;\r | |
448 | memcpy(&traceCard[6], atqa, 2);\r | |
449 | traceCurBlock = 0;\r | |
450 | uid = bytes_to_num(tuid + 3, 4);\r | |
451 | \r | |
452 | traceState = TRACE_IDLE;\r | |
453 | \r | |
454 | return 0;\r | |
455 | }\r | |
456 | \r | |
457 | void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool isEncrypted){\r | |
458 | uint8_t bt = 0;\r | |
459 | int i;\r | |
460 | \r | |
461 | if (len != 1) {\r | |
462 | for (i = 0; i < len; i++)\r | |
463 | data[i] = crypto1_byte(pcs, 0x00, isEncrypted) ^ data[i];\r | |
464 | } else {\r | |
d294f582 | 465 | bt = 0; \r |
466 | bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 0)) << 0;\r | |
467 | bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 1)) << 1;\r | |
468 | bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 2)) << 2;\r | |
469 | bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 3)) << 3; \r | |
55acbb2a M |
470 | data[0] = bt;\r |
471 | }\r | |
472 | return;\r | |
473 | }\r | |
474 | \r | |
a501c82b | 475 | int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {\r |
d294f582 | 476 | \r |
55acbb2a M |
477 | uint8_t data[64];\r |
478 | \r | |
479 | if (traceState == TRACE_ERROR) return 1;\r | |
d294f582 | 480 | \r |
55acbb2a M |
481 | if (len > 64) {\r |
482 | traceState = TRACE_ERROR;\r | |
483 | return 1;\r | |
484 | }\r | |
485 | \r | |
486 | memcpy(data, data_src, len);\r | |
487 | if ((traceCrypto1) && ((traceState == TRACE_IDLE) || (traceState > TRACE_AUTH_OK))) {\r | |
488 | mf_crypto1_decrypt(traceCrypto1, data, len, 0);\r | |
489 | PrintAndLog("dec> %s", sprint_hex(data, len));\r | |
490 | AddLogHex(logHexFileName, "dec> ", data, len); \r | |
491 | }\r | |
492 | \r | |
493 | switch (traceState) {\r | |
494 | case TRACE_IDLE: \r | |
8b6a93df M |
495 | // check packet crc16!\r |
496 | if ((len >= 4) && (!CheckCrc14443(CRC_14443_A, data, len))) {\r | |
497 | PrintAndLog("dec> CRC ERROR!!!");\r | |
498 | AddLogLine(logHexFileName, "dec> ", "CRC ERROR!!!"); \r | |
499 | traceState = TRACE_ERROR; // do not decrypt the next commands\r | |
500 | return 1;\r | |
501 | }\r | |
55acbb2a M |
502 | \r |
503 | // AUTHENTICATION\r | |
a61b4976 | 504 | if ((len == 4) && ((data[0] == 0x60) || (data[0] == 0x61))) {\r |
55acbb2a M |
505 | traceState = TRACE_AUTH1;\r |
506 | traceCurBlock = data[1];\r | |
507 | traceCurKey = data[0] == 60 ? 1:0;\r | |
508 | return 0;\r | |
509 | }\r | |
510 | \r | |
511 | // READ\r | |
512 | if ((len ==4) && ((data[0] == 0x30))) {\r | |
513 | traceState = TRACE_READ_DATA;\r | |
514 | traceCurBlock = data[1];\r | |
515 | return 0;\r | |
516 | }\r | |
517 | \r | |
518 | // WRITE\r | |
519 | if ((len ==4) && ((data[0] == 0xA0))) {\r | |
520 | traceState = TRACE_WRITE_OK;\r | |
521 | traceCurBlock = data[1];\r | |
522 | return 0;\r | |
523 | }\r | |
524 | \r | |
525 | // HALT\r | |
526 | if ((len ==4) && ((data[0] == 0x50) && (data[1] == 0x00))) {\r | |
527 | traceState = TRACE_ERROR; // do not decrypt the next commands\r | |
528 | return 0;\r | |
529 | }\r | |
530 | \r | |
531 | return 0;\r | |
532 | break;\r | |
533 | \r | |
534 | case TRACE_READ_DATA: \r | |
535 | if (len == 18) {\r | |
536 | traceState = TRACE_IDLE;\r | |
537 | \r | |
e0c635d1 M |
538 | if (isBlockTrailer(traceCurBlock)) {\r |
539 | memcpy(traceCard + traceCurBlock * 16 + 6, data + 6, 4);\r | |
540 | } else {\r | |
541 | memcpy(traceCard + traceCurBlock * 16, data, 16);\r | |
542 | }\r | |
543 | if (wantSaveToEmlFile) saveTraceCard();\r | |
55acbb2a M |
544 | return 0;\r |
545 | } else {\r | |
546 | traceState = TRACE_ERROR;\r | |
547 | return 1;\r | |
548 | }\r | |
549 | break;\r | |
550 | \r | |
551 | case TRACE_WRITE_OK: \r | |
a61b4976 | 552 | if ((len == 1) && (data[0] == 0x0a)) {\r |
55acbb2a M |
553 | traceState = TRACE_WRITE_DATA;\r |
554 | \r | |
555 | return 0;\r | |
556 | } else {\r | |
557 | traceState = TRACE_ERROR;\r | |
558 | return 1;\r | |
559 | }\r | |
560 | break;\r | |
561 | \r | |
562 | case TRACE_WRITE_DATA: \r | |
563 | if (len == 18) {\r | |
564 | traceState = TRACE_IDLE;\r | |
565 | \r | |
566 | memcpy(traceCard + traceCurBlock * 16, data, 16);\r | |
e0c635d1 | 567 | if (wantSaveToEmlFile) saveTraceCard();\r |
55acbb2a M |
568 | return 0;\r |
569 | } else {\r | |
570 | traceState = TRACE_ERROR;\r | |
571 | return 1;\r | |
572 | }\r | |
573 | break;\r | |
574 | \r | |
575 | case TRACE_AUTH1: \r | |
576 | if (len == 4) {\r | |
577 | traceState = TRACE_AUTH2;\r | |
55acbb2a M |
578 | nt = bytes_to_num(data, 4);\r |
579 | return 0;\r | |
580 | } else {\r | |
581 | traceState = TRACE_ERROR;\r | |
582 | return 1;\r | |
583 | }\r | |
584 | break;\r | |
585 | \r | |
586 | case TRACE_AUTH2: \r | |
587 | if (len == 8) {\r | |
588 | traceState = TRACE_AUTH_OK;\r | |
589 | \r | |
590 | nr_enc = bytes_to_num(data, 4);\r | |
591 | ar_enc = bytes_to_num(data + 4, 4);\r | |
592 | return 0;\r | |
593 | } else {\r | |
594 | traceState = TRACE_ERROR;\r | |
595 | return 1;\r | |
596 | }\r | |
597 | break;\r | |
598 | \r | |
599 | case TRACE_AUTH_OK: \r | |
600 | if (len ==4) {\r | |
601 | traceState = TRACE_IDLE;\r | |
602 | \r | |
603 | at_enc = bytes_to_num(data, 4);\r | |
604 | \r | |
605 | // decode key here)\r | |
a61b4976 | 606 | ks2 = ar_enc ^ prng_successor(nt, 64);\r |
607 | ks3 = at_enc ^ prng_successor(nt, 96);\r | |
608 | revstate = lfsr_recovery64(ks2, ks3);\r | |
609 | lfsr_rollback_word(revstate, 0, 0);\r | |
610 | lfsr_rollback_word(revstate, 0, 0);\r | |
611 | lfsr_rollback_word(revstate, nr_enc, 1);\r | |
612 | lfsr_rollback_word(revstate, uid ^ nt, 0);\r | |
613 | \r | |
046fd766 | 614 | crypto1_get_lfsr(revstate, &key);\r |
615 | printf("Key: %012"llx"\n",key);\r | |
616 | AddLogUint64(logHexFileName, "key: ", key); \r | |
55acbb2a | 617 | \r |
e0c635d1 M |
618 | int blockShift = ((traceCurBlock & 0xFC) + 3) * 16;\r |
619 | if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4);\r | |
620 | \r | |
55acbb2a | 621 | if (traceCurKey) {\r |
046fd766 | 622 | num_to_bytes(key, 6, traceCard + blockShift + 10);\r |
55acbb2a | 623 | } else {\r |
046fd766 | 624 | num_to_bytes(key, 6, traceCard + blockShift);\r |
55acbb2a | 625 | }\r |
e0c635d1 | 626 | if (wantSaveToEmlFile) saveTraceCard();\r |
55acbb2a M |
627 | \r |
628 | if (traceCrypto1) {\r | |
629 | crypto1_destroy(traceCrypto1);\r | |
630 | }\r | |
631 | \r | |
632 | // set cryptosystem state\r | |
633 | traceCrypto1 = lfsr_recovery64(ks2, ks3);\r | |
634 | \r | |
635 | // nt = crypto1_word(traceCrypto1, nt ^ uid, 1) ^ nt;\r | |
636 | \r | |
046fd766 | 637 | /* traceCrypto1 = crypto1_create(key); // key in lfsr\r |
55acbb2a M |
638 | crypto1_word(traceCrypto1, nt ^ uid, 0);\r |
639 | crypto1_word(traceCrypto1, ar, 1);\r | |
640 | crypto1_word(traceCrypto1, 0, 0);\r | |
641 | crypto1_word(traceCrypto1, 0, 0);*/\r | |
642 | \r | |
643 | return 0;\r | |
644 | } else {\r | |
645 | traceState = TRACE_ERROR;\r | |
646 | return 1;\r | |
647 | }\r | |
648 | break;\r | |
649 | \r | |
650 | default: \r | |
651 | traceState = TRACE_ERROR;\r | |
652 | return 1;\r | |
653 | }\r | |
654 | \r | |
655 | return 0;\r | |
656 | }\r | |
e98572a1 | 657 | \r |
658 | int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){\r | |
659 | /*\r | |
660 | uint32_t nt; // tag challenge\r | |
3bc7b13d | 661 | uint32_t nr_enc; // encrypted reader challenge\r |
e98572a1 | 662 | uint32_t ar_enc; // encrypted reader response\r |
663 | uint32_t at_enc; // encrypted tag response\r | |
664 | */\r | |
3bc7b13d | 665 | struct Crypto1State *pcs = NULL;\r |
666 | \r | |
e98572a1 | 667 | ks2 = ar_enc ^ prng_successor(nt, 64);\r |
668 | ks3 = at_enc ^ prng_successor(nt, 96);\r | |
3bc7b13d | 669 | \r |
670 | PrintAndLog("Decrypting data with:");\r | |
671 | PrintAndLog(" nt: %08x",nt);\r | |
672 | PrintAndLog(" ar_enc: %08x",ar_enc);\r | |
673 | PrintAndLog(" at_enc: %08x",at_enc);\r | |
674 | PrintAndLog("\nEncrypted data: [%s]", sprint_hex(data,len) );\r | |
675 | \r | |
676 | pcs = lfsr_recovery64(ks2, ks3);\r | |
677 | mf_crypto1_decrypt(pcs, data, len, FALSE);\r | |
e98572a1 | 678 | PrintAndLog("Decrypted data: [%s]", sprint_hex(data,len) );\r |
3bc7b13d | 679 | crypto1_destroy(pcs);\r |
e98572a1 | 680 | return 0;\r |
681 | }\r |