]> git.zerfleddert.de Git - proxmark3-svn/blob - client/emv/emvcore.c
projects / proxmark3-svn / blob
? search:


510e98507f5c72d7db5ea2285c6f7d5391ee1645
[proxmark3-svn] / client / emv / emvcore.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2017 Merlok
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 // EMV core functions
9 //-----------------------------------------------------------------------------
10
11 #include "emvcore.h"
12 #include "emvjson.h"
13 #include "util_posix.h"
14 #include "protocols.h"
15 #ifdef WITH_SMARTCARD
16 #include "cmdsmartcard.h"
17 #endif
18
19 // Got from here. Thanks)
20 // https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
21 static const char *PSElist [] = {
22 "325041592E5359532E4444463031", // 2PAY.SYS.DDF01 - Visa Proximity Payment System Environment - PPSE
23 "315041592E5359532E4444463031" // 1PAY.SYS.DDF01 - Visa Payment System Environment - PSE
24 };
25 //static const size_t PSElistLen = sizeof(PSElist)/sizeof(char*);
26
27 char *TransactionTypeStr[] = {
28 "MSD",
29 "VSDC",
30 "qVCDCMCHIP",
31 "CDA"
32 };
33
34 typedef struct {
35 enum CardPSVendor vendor;
36 const char* aid;
37 } TAIDList;
38
39 static const TAIDList AIDlist [] = {
40 // Visa International
41 { CV_VISA, "A00000000305076010"}, // VISA ELO Credit
42 { CV_VISA, "A0000000031010" }, // VISA Debit/Credit (Classic)
43 { CV_VISA, "A000000003101001" }, // VISA Credit
44 { CV_VISA, "A000000003101002" }, // VISA Debit
45 { CV_VISA, "A0000000032010" }, // VISA Electron
46 { CV_VISA, "A0000000032020" }, // VISA
47 { CV_VISA, "A0000000033010" }, // VISA Interlink
48 { CV_VISA, "A0000000034010" }, // VISA Specific
49 { CV_VISA, "A0000000035010" }, // VISA Specific
50 { CV_VISA, "A0000000036010" }, // Domestic Visa Cash Stored Value
51 { CV_VISA, "A0000000036020" }, // International Visa Cash Stored Value
52 { CV_VISA, "A0000000038002" }, // VISA Auth, VisaRemAuthen EMV-CAP (DPA)
53 { CV_VISA, "A0000000038010" }, // VISA Plus
54 { CV_VISA, "A0000000039010" }, // VISA Loyalty
55 { CV_VISA, "A000000003999910" }, // VISA Proprietary ATM
56 // Visa USA
57 { CV_VISA, "A000000098" }, // Debit Card
58 { CV_VISA, "A0000000980848" }, // Debit Card
59 // Mastercard International
60 { CV_MASTERCARD, "A00000000401" }, // MasterCard PayPass
61 { CV_MASTERCARD, "A0000000041010" }, // MasterCard Credit
62 { CV_MASTERCARD, "A00000000410101213" }, // MasterCard Credit
63 { CV_MASTERCARD, "A00000000410101215" }, // MasterCard Credit
64 { CV_MASTERCARD, "A0000000042010" }, // MasterCard Specific
65 { CV_MASTERCARD, "A0000000043010" }, // MasterCard Specific
66 { CV_MASTERCARD, "A0000000043060" }, // Maestro (Debit)
67 { CV_MASTERCARD, "A000000004306001" }, // Maestro (Debit)
68 { CV_MASTERCARD, "A0000000044010" }, // MasterCard Specific
69 { CV_MASTERCARD, "A0000000045010" }, // MasterCard Specific
70 { CV_MASTERCARD, "A0000000046000" }, // Cirrus
71 { CV_MASTERCARD, "A0000000048002" }, // SecureCode Auth EMV-CAP
72 { CV_MASTERCARD, "A0000000049999" }, // MasterCard PayPass
73 // American Express
74 { CV_AMERICANEXPRESS, "A000000025" },
75 { CV_AMERICANEXPRESS, "A0000000250000" },
76 { CV_AMERICANEXPRESS, "A00000002501" },
77 { CV_AMERICANEXPRESS, "A000000025010402" },
78 { CV_AMERICANEXPRESS, "A000000025010701" },
79 { CV_AMERICANEXPRESS, "A000000025010801" },
80 // Groupement des Cartes Bancaires "CB"
81 { CV_CB, "A0000000421010" }, // Cartes Bancaire EMV Card
82 { CV_CB, "A0000000422010" },
83 { CV_CB, "A0000000423010" },
84 { CV_CB, "A0000000424010" },
85 { CV_CB, "A0000000425010" },
86 // JCB CO., LTD.
87 { CV_JCB, "A00000006510" }, // JCB
88 { CV_JCB, "A0000000651010" }, // JCB J Smart Credit
89 // Other
90 { CV_OTHER, "A0000001544442" }, // Banricompras Debito - Banrisul - Banco do Estado do Rio Grande do SUL - S.A.
91 { CV_OTHER, "F0000000030001" }, // BRADESCO
92 { CV_OTHER, "A0000005241010" }, // RuPay - RuPay
93 { CV_OTHER, "D5780000021010" } // Bankaxept - Bankaxept
94 };
95 static const size_t AIDlistLen = sizeof(AIDlist)/sizeof(TAIDList);
96
97 static bool APDULogging = false;
98 void SetAPDULogging(bool logging) {
99 APDULogging = logging;
100 }
101
102 enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
103 char buf[100] = {0};
104 if (AIDlen < 1)
105 return CV_NA;
106
107 hex_to_buffer((uint8_t *)buf, AID, AIDlen, sizeof(buf) - 1, 0, 0, true);
108
109 for(int i = 0; i < AIDlistLen; i ++) {
110 if (strncmp(AIDlist[i].aid, buf, strlen(AIDlist[i].aid)) == 0){
111 return AIDlist[i].vendor;
112 }
113 }
114
115 return CV_NA;
116 }
117
118 static bool print_cb(void *data, const struct tlv *tlv, int level, bool is_leaf) {
119 emv_tag_dump(tlv, stdout, level);
120 if (is_leaf) {
121 dump_buffer(tlv->value, tlv->len, stdout, level);
122 }
123
124 return true;
125 }
126
127 bool TLVPrintFromBuffer(uint8_t *data, int datalen) {
128 struct tlvdb *t = NULL;
129 t = tlvdb_parse_multi(data, datalen);
130 if (t) {
131 PrintAndLogEx(NORMAL, "-------------------- TLV decoded --------------------");
132
133 tlvdb_visit(t, print_cb, NULL, 0);
134 tlvdb_free(t);
135 return true;
136 } else {
137 PrintAndLogEx(WARNING, "TLV ERROR: Can't parse response as TLV tree.");
138 }
139 return false;
140 }
141
142 void TLVPrintFromTLVLev(struct tlvdb *tlv, int level) {
143 if (!tlv)
144 return;
145
146 tlvdb_visit(tlv, print_cb, NULL, level);
147 }
148
149 void TLVPrintFromTLV(struct tlvdb *tlv) {
150 TLVPrintFromTLVLev(tlv, 0);
151 }
152
153 void TLVPrintAIDlistFromSelectTLV(struct tlvdb *tlv) {
154 PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
155 PrintAndLogEx(NORMAL, "| AID |Priority| Name |");
156 PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
157
158 struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
159 if (!ttmp)
160 PrintAndLogEx(NORMAL, "| none |");
161
162 while (ttmp) {
163 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
164 const struct tlv *tgName = tlvdb_get_inchild(ttmp, 0x50, NULL);
165 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
166 if (!tgAID)
167 break;
168 PrintAndLogEx(NORMAL, "|%s| %s |%s|",
169 sprint_hex_inrow_ex(tgAID->value, tgAID->len, 18),
170 (tgPrio) ? sprint_hex(tgPrio->value, 1) : " ",
171 (tgName) ? sprint_ascii_ex(tgName->value, tgName->len, 25) : " ");
172
173 ttmp = tlvdb_find_next(ttmp, 0x6f);
174 }
175
176 PrintAndLogEx(NORMAL, "|------------------|--------|-------------------------|");
177 }
178
179 struct tlvdb *GetPANFromTrack2(const struct tlv *track2) {
180 char track2Hex[200] = {0};
181 uint8_t PAN[100] = {0};
182 int PANlen = 0;
183 char *tmp = track2Hex;
184
185 if (!track2)
186 return NULL;
187
188 for (int i = 0; i < track2->len; ++i, tmp += 2)
189 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
190
191 int posD = strchr(track2Hex, 'd') - track2Hex;
192 if (posD < 1)
193 return NULL;
194
195 track2Hex[posD] = 0;
196 if (strlen(track2Hex) % 2) {
197 track2Hex[posD] = 'F';
198 track2Hex[posD + 1] = '\0';
199 }
200
201 param_gethex_to_eol(track2Hex, 0, PAN, sizeof(PAN), &PANlen);
202
203 return tlvdb_fixed(0x5a, PANlen, PAN);
204 }
205
206 struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
207 char track2Hex[200] = {0};
208 char dCVVHex[100] = {0};
209 uint8_t dCVV[100] = {0};
210 int dCVVlen = 0;
211 const int PINlen = 5; // must calculated from 9F67 MSD Offset but i have not seen this tag)
212 char *tmp = track2Hex;
213
214 if (!track2)
215 return NULL;
216
217 for (int i = 0; i < track2->len; ++i, tmp += 2)
218 sprintf(tmp, "%02x", (unsigned int)track2->value[i]);
219
220 int posD = strchr(track2Hex, 'd') - track2Hex;
221 if (posD < 1)
222 return NULL;
223
224 memset(dCVVHex, '0', 32);
225 // ATC
226 memcpy(dCVVHex + 0, track2Hex + posD + PINlen + 11, 4);
227 // PAN 5 hex
228 memcpy(dCVVHex + 4, track2Hex, 5);
229 // expire date
230 memcpy(dCVVHex + 9, track2Hex + posD + 1, 4);
231 // service code
232 memcpy(dCVVHex + 13, track2Hex + posD + 5, 3);
233
234 param_gethex_to_eol(dCVVHex, 0, dCVV, sizeof(dCVV), &dCVVlen);
235
236 return tlvdb_fixed(0x02, dCVVlen, dCVV);
237 }
238
239
240 static int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
241 {
242 *ResultLen = 0;
243 if (sw) *sw = 0;
244 uint16_t isw = 0;
245 int res = 0;
246
247 if (ActivateField && channel == ECC_CONTACTLESS) {
248 DropField();
249 msleep(50);
250 }
251
252 if (APDULogging)
253 PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(apdu, apdu_len));
254
255 switch(channel) {
256 case ECC_CONTACTLESS:
257 // 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
258 res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
259 if (res) {
260 return res;
261 }
262 break;
263 case ECC_CONTACT:
264 //int ExchangeAPDUSC(uint8_t *datain, int datainlen, bool activateCard, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen);
265 #ifdef WITH_SMARTCARD
266 res = ExchangeAPDUSC(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
267 if (res) {
268 return res;
269 }
270 #endif
271 break;
272 }
273
274 if (APDULogging)
275 PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
276
277 if (*ResultLen < 2) {
278 return 200;
279 }
280
281 if (Result[*ResultLen-2] == 0x61) {
282 uint8_t La = Result[*ResultLen-1];
283 uint8_t get_response[5] = {apdu[0], ISO7816_GET_RESPONSE, 0x00, 0x00, La};
284 return EMVExchangeEx(channel, false, LeaveFieldON, get_response, sizeof(get_response), Result, MaxResultLen, ResultLen, sw, tlv);
285 }
286
287 *ResultLen -= 2;
288 isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
289 if (sw)
290 *sw = isw;
291
292 if (isw != 0x9000) {
293 if (APDULogging) {
294 PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu[0], apdu[1], isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
295 return 5;
296 }
297 }
298
299 // add to tlv tree
300 if (tlv) {
301 struct tlvdb *t = tlvdb_parse_multi(Result, *ResultLen);
302 tlvdb_add(tlv, t);
303 }
304
305 return 0;
306 }
307
308 int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
309 {
310 uint8_t APDU[APDU_COMMAND_LEN];
311 memcpy(APDU, apdu, apdu_len);
312 APDU[apdu_len] = 0x00;
313 if (channel == ECC_CONTACTLESS) {
314 if (apdu_len == 5 && apdu[4] == 0) {
315 // there is no Lc but an Le == 0 already
316 } else if (apdu_len > 5 && apdu_len == 5 + apdu[4] + 1) {
317 // there is Lc, data and Le
318 } else {
319 apdu_len++; // no Le, add Le = 0x00 because some vendors require it for contactless
320 }
321 }
322 return EMVExchangeEx(channel, false, LeaveFieldON, APDU, apdu_len, Result, MaxResultLen, ResultLen, sw, tlv);
323 }
324
325 int EMVSelect(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *AID, size_t AIDLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
326 {
327 uint8_t Select_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_SELECT_FILE, 0x04, 0x00, AIDLen, 0x00};
328 memcpy(Select_APDU + 5, AID, AIDLen);
329 int apdulen = 5 + AIDLen;
330 if (channel == ECC_CONTACTLESS) {
331 apdulen++; // some vendors require Le = 0x00 for contactless operations
332 }
333 return EMVExchangeEx(channel, ActivateField, LeaveFieldON, Select_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
334 }
335
336 int EMVSelectPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
337 uint8_t buf[APDU_DATA_LEN] = {0};
338 *ResultLen = 0;
339 int len = 0;
340 int res = 0;
341 switch (PSENum) {
342 case 1:
343 param_gethex_to_eol(PSElist[1], 0, buf, sizeof(buf), &len);
344 break;
345 case 2:
346
347 param_gethex_to_eol(PSElist[0], 0, buf, sizeof(buf), &len);
348 break;
349 default:
350 return -1;
351 }
352
353 // select
354 res = EMVSelect(channel, ActivateField, LeaveFieldON, buf, len, Result, MaxResultLen, ResultLen, sw, NULL);
355
356 return res;
357 }
358
359 int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t PSENum, bool decodeTLV, struct tlvdb *tlv) {
360 uint8_t data[APDU_RESPONSE_LEN] = {0};
361 size_t datalen = 0;
362 uint16_t sw = 0;
363 int res;
364
365 char *PSE_or_PPSE = PSENum == 1 ? "PSE" : "PPSE";
366
367 // select PPSE
368 res = EMVSelectPSE(channel, ActivateField, true, PSENum, data, sizeof(data), &datalen, &sw);
369
370 if (!res){
371 struct tlvdb *t = NULL;
372 t = tlvdb_parse_multi(data, datalen);
373 if (t) {
374 int retrycnt = 0;
375 struct tlvdb *ttmp = tlvdb_find_path(t, (tlv_tag_t[]){0x6f, 0xa5, 0xbf0c, 0x61, 0x00});
376 if (!ttmp)
377 PrintAndLogEx(FAILED, "%s doesn't have any records.", PSE_or_PPSE);
378
379 while (ttmp) {
380 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x4f, NULL);
381 if (tgAID) {
382 res = EMVSelect(channel, false, true, (uint8_t *)tgAID->value, tgAID->len, data, sizeof(data), &datalen, &sw, tlv);
383
384 // retry if error and not returned sw error
385 if (res && res != 5) {
386 if (++retrycnt < 3){
387 continue;
388 } else {
389 // card select error, proxmark error
390 if (res == 1) {
391 PrintAndLogEx(WARNING, "Exit...");
392 return 1;
393 }
394
395 retrycnt = 0;
396 PrintAndLogEx(NORMAL, "Retry failed [%s]. Skiped...", sprint_hex_inrow(tgAID->value, tgAID->len));
397 }
398
399 // next element
400 ttmp = tlvdb_find_next(ttmp, 0x61);
401 continue;
402 }
403 retrycnt = 0;
404
405 // all is ok
406 if (decodeTLV){
407 PrintAndLogEx(NORMAL, "%s:", sprint_hex_inrow(tgAID->value, tgAID->len));
408 TLVPrintFromBuffer(data, datalen);
409 }
410 }
411
412 ttmp = tlvdb_find_next(ttmp, 0x61);
413 }
414
415 tlvdb_free(t);
416 } else {
417 PrintAndLogEx(WARNING, "%s ERROR: Can't get TLV from response.", PSE_or_PPSE);
418 }
419 } else {
420 PrintAndLogEx(WARNING, "%s ERROR: Can't select PPSE AID. Error: %d", PSE_or_PPSE, res);
421 }
422
423 if(!LeaveFieldON && channel == ECC_CONTACTLESS)
424 DropField();
425
426 return res;
427 }
428
429 int EMVSearch(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, bool decodeTLV, struct tlvdb *tlv) {
430 uint8_t aidbuf[APDU_DATA_LEN] = {0};
431 int aidlen = 0;
432 uint8_t data[APDU_RESPONSE_LEN] = {0};
433 size_t datalen = 0;
434 uint16_t sw = 0;
435
436 int res = 0;
437 int retrycnt = 0;
438 for(int i = 0; i < AIDlistLen; i ++) {
439 param_gethex_to_eol(AIDlist[i].aid, 0, aidbuf, sizeof(aidbuf), &aidlen);
440 res = EMVSelect(channel, (i == 0) ? ActivateField : false, (i == AIDlistLen - 1) ? LeaveFieldON : true, aidbuf, aidlen, data, sizeof(data), &datalen, &sw, tlv);
441 // retry if error and not returned sw error
442 if (res && res != 5) {
443 if (++retrycnt < 3){
444 i--;
445 } else {
446 // (1) - card select error, proxmark error OR (200) - result length = 0
447 if (res == 1 || res == 200) {
448 PrintAndLogEx(WARNING, "Exit...");
449 return 1;
450 }
451
452 retrycnt = 0;
453 PrintAndLogEx(FAILED, "Retry failed [%s]. Skipped...", AIDlist[i].aid);
454 }
455 continue;
456 }
457 retrycnt = 0;
458
459 if (res)
460 continue;
461
462 if (!datalen)
463 continue;
464
465 if (decodeTLV) {
466 PrintAndLogEx(SUCCESS, "%s", AIDlist[i].aid);
467 TLVPrintFromBuffer(data, datalen);
468 }
469 }
470
471 return 0;
472 }
473
474 int EMVSelectApplication(struct tlvdb *tlv, uint8_t *AID, size_t *AIDlen) {
475 // check priority. 0x00 - highest
476 int prio = 0xffff;
477
478 *AIDlen = 0;
479
480 struct tlvdb *ttmp = tlvdb_find(tlv, 0x6f);
481 if (!ttmp)
482 return 1;
483
484 while (ttmp) {
485 const struct tlv *tgAID = tlvdb_get_inchild(ttmp, 0x84, NULL);
486 const struct tlv *tgPrio = tlvdb_get_inchild(ttmp, 0x87, NULL);
487
488 if (!tgAID)
489 break;
490
491 if (tgPrio) {
492 int pt = bytes_to_num((uint8_t*)tgPrio->value, (tgPrio->len < 2) ? tgPrio->len : 2);
493 if (pt < prio) {
494 prio = pt;
495
496 memcpy(AID, tgAID->value, tgAID->len);
497 *AIDlen = tgAID->len;
498 }
499 } else {
500 // takes the first application from list wo priority
501 if (!*AIDlen) {
502 memcpy(AID, tgAID->value, tgAID->len);
503 *AIDlen = tgAID->len;
504 }
505 }
506
507 ttmp = tlvdb_find_next(ttmp, 0x6f);
508 }
509
510 return 0;
511 }
512
513 int EMVGPO(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *PDOL, size_t PDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
514 {
515 uint8_t GPO_APDU[APDU_COMMAND_LEN] = {0x80, 0xa8, 0x00, 0x00, PDOLLen, 0x00};
516 memcpy(GPO_APDU + 5, PDOL, PDOLLen);
517 int apdulen = 5 + PDOLLen;
518
519 return EMVExchange(channel, LeaveFieldON, GPO_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
520 }
521
522 int EMVReadRecord(EMVCommandChannel channel, bool LeaveFieldON, uint8_t SFI, uint8_t SFIrec, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
523 {
524 uint8_t read_APDU[5] = {0x00, ISO7816_READ_RECORDS, SFIrec, (SFI << 3) | 0x04, 0x00};
525 int res = EMVExchange(channel, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
526 if (*sw == 0x6700) {
527 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
528 res = EMVExchangeEx(channel, false, LeaveFieldON, read_APDU, sizeof(read_APDU), Result, MaxResultLen, ResultLen, sw, tlv);
529 }
530 return res;
531 }
532
533 int EMVAC(EMVCommandChannel channel, bool LeaveFieldON, uint8_t RefControl, uint8_t *CDOL, size_t CDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
534 {
535 uint8_t CDOL_APDU[APDU_COMMAND_LEN] = {0x80, 0xae, RefControl, 0x00, CDOLLen, 0x00};
536 memcpy(CDOL_APDU + 5, CDOL, CDOLLen);
537 int apdulen = 5 + CDOLLen;
538
539 return EMVExchange(channel, LeaveFieldON, CDOL_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
540 }
541
542 int EMVGenerateChallenge(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
543 {
544 uint8_t get_challenge_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_GET_CHALLENGE, 0x00, 0x00};
545
546 int res = EMVExchange(channel, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
547 if (*sw == 0x6700) {
548 PrintAndLogEx(INFO, ">>> trying to reissue command withouth Le...");
549 res = EMVExchangeEx(channel, false, LeaveFieldON, get_challenge_APDU, 4, Result, MaxResultLen, ResultLen, sw, tlv);
550 }
551 return res;
552 }
553
554 int EMVInternalAuthenticate(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *DDOL, size_t DDOLLen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
555 {
556 uint8_t authenticate_APDU[APDU_COMMAND_LEN] = {0x00, ISO7816_INTERNAL_AUTHENTICATION, 0x00, 0x00, DDOLLen, 0x00};
557 memcpy(authenticate_APDU + 5, DDOL, DDOLLen);
558 int apdulen = 5 + DDOLLen;
559
560 return EMVExchange(channel, LeaveFieldON, authenticate_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
561 }
562
563 int MSCComputeCryptoChecksum(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *UDOL, uint8_t UDOLlen, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
564 {
565 uint8_t checksum_APDU[APDU_COMMAND_LEN] = {0x80, 0x2a, 0x8e, 0x80, UDOLlen, 0x00};
566 memcpy(checksum_APDU + 5, UDOL, UDOLlen);
567 int apdulen = 5 + UDOLlen;
568
569 return EMVExchange(channel, LeaveFieldON, checksum_APDU, apdulen, Result, MaxResultLen, ResultLen, sw, tlv);
570 }
571
572 // Authentication
573 struct emv_pk *get_ca_pk(struct tlvdb *db) {
574 const struct tlv *df_tlv = tlvdb_get(db, 0x84, NULL);
575 const struct tlv *caidx_tlv = tlvdb_get(db, 0x8f, NULL);
576
577 if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
578 return NULL;
579
580 PrintAndLogEx(NORMAL, "CA public key index 0x%0x", caidx_tlv->value[0]);
581 return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
582 }
583
584 int trSDA(struct tlvdb *tlv) {
585
586 struct emv_pk *pk = get_ca_pk(tlv);
587 if (!pk) {
588 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
589 return 2;
590 }
591
592 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
593 if (!issuer_pk) {
594 emv_pk_free(pk);
595 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
596 return 2;
597 }
598
599 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
600 issuer_pk->rid[0],
601 issuer_pk->rid[1],
602 issuer_pk->rid[2],
603 issuer_pk->rid[3],
604 issuer_pk->rid[4],
605 issuer_pk->index,
606 issuer_pk->serial[0],
607 issuer_pk->serial[1],
608 issuer_pk->serial[2]
609 );
610
611 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
612 if (!sda_tlv || sda_tlv->len < 1) {
613 emv_pk_free(issuer_pk);
614 emv_pk_free(pk);
615 PrintAndLogEx(WARNING, "Can't find input list for Offline Data Authentication. Exit.");
616 return 3;
617 }
618
619 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
620 if (dac_db) {
621 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
622 PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
623 tlvdb_add(tlv, dac_db);
624 } else {
625 emv_pk_free(issuer_pk);
626 emv_pk_free(pk);
627 PrintAndLogEx(WARNING, "SSAD verify error");
628 return 4;
629 }
630
631 emv_pk_free(issuer_pk);
632 emv_pk_free(pk);
633 return 0;
634 }
635
636 static const unsigned char default_ddol_value[] = {0x9f, 0x37, 0x04};
637 static struct tlv default_ddol_tlv = {.tag = 0x9f49, .len = 3, .value = default_ddol_value };
638
639 int trDDA(EMVCommandChannel channel, bool decodeTLV, struct tlvdb *tlv) {
640 uint8_t buf[APDU_RESPONSE_LEN] = {0};
641 size_t len = 0;
642 uint16_t sw = 0;
643
644 struct emv_pk *pk = get_ca_pk(tlv);
645 if (!pk) {
646 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
647 return 2;
648 }
649
650 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
651 if (!sda_tlv || sda_tlv->len < 1) {
652 emv_pk_free(pk);
653 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
654 return 3;
655 }
656
657 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
658 if (!issuer_pk) {
659 emv_pk_free(pk);
660 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
661 return 2;
662 }
663 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
664 issuer_pk->rid[0],
665 issuer_pk->rid[1],
666 issuer_pk->rid[2],
667 issuer_pk->rid[3],
668 issuer_pk->rid[4],
669 issuer_pk->index,
670 issuer_pk->serial[0],
671 issuer_pk->serial[1],
672 issuer_pk->serial[2]
673 );
674
675 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
676 if (!icc_pk) {
677 emv_pk_free(pk);
678 emv_pk_free(issuer_pk);
679 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
680 return 2;
681 }
682 PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
683 icc_pk->rid[0],
684 icc_pk->rid[1],
685 icc_pk->rid[2],
686 icc_pk->rid[3],
687 icc_pk->rid[4],
688 icc_pk->index,
689 icc_pk->serial[0],
690 icc_pk->serial[1],
691 icc_pk->serial[2]
692 );
693
694 struct emv_pk *icc_pe_pk = emv_pki_recover_icc_pe_cert(issuer_pk, tlv);
695 if (!icc_pe_pk) {
696 PrintAndLogEx(WARNING, "WARNING: ICC PE PK recover error. ");
697 } else {
698 PrintAndLogEx(SUCCESS, "ICC PE PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
699 icc_pe_pk->rid[0],
700 icc_pe_pk->rid[1],
701 icc_pe_pk->rid[2],
702 icc_pe_pk->rid[3],
703 icc_pe_pk->rid[4],
704 icc_pe_pk->index,
705 icc_pe_pk->serial[0],
706 icc_pe_pk->serial[1],
707 icc_pe_pk->serial[2]
708 );
709 }
710
711 // 9F4B: Signed Dynamic Application Data
712 const struct tlv *sdad_tlv = tlvdb_get(tlv, 0x9f4b, NULL);
713 // DDA with internal authenticate OR fDDA with filled 0x9F4B tag (GPO result)
714 // EMV kernel3 v2.4, contactless book C-3, C.1., page 147
715 if (sdad_tlv) {
716 PrintAndLogEx(NORMAL, "\n* * Got Signed Dynamic Application Data (9F4B) form GPO. Maybe fDDA...");
717
718 const struct tlvdb *atc_db = emv_pki_recover_atc_ex(icc_pk, tlv, true);
719 if (!atc_db) {
720 PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
721 emv_pk_free(pk);
722 emv_pk_free(issuer_pk);
723 emv_pk_free(icc_pk);
724 return 8;
725 }
726
727 // 9f36 Application Transaction Counter (ATC)
728 const struct tlv *atc_tlv = tlvdb_get(atc_db, 0x9f36, NULL);
729 if(atc_tlv) {
730 PrintAndLogEx(NORMAL, "\nATC (Application Transaction Counter) [%zu] %s", atc_tlv->len, sprint_hex_inrow(atc_tlv->value, atc_tlv->len));
731
732 const struct tlv *core_atc_tlv = tlvdb_get(tlv, 0x9f36, NULL);
733 if(tlv_equal(core_atc_tlv, atc_tlv)) {
734 PrintAndLogEx(SUCCESS, "ATC check OK.");
735 PrintAndLogEx(SUCCESS, "fDDA (fast DDA) verified OK.");
736 } else {
737 PrintAndLogEx(WARNING, "Error: fDDA verified, but ATC in the certificate and ATC in the record not the same.");
738 }
739 } else {
740 PrintAndLogEx(NORMAL, "\nERROR: fDDA (fast DDA) verify error");
741 emv_pk_free(pk);
742 emv_pk_free(issuer_pk);
743 emv_pk_free(icc_pk);
744 return 9;
745 }
746 } else {
747 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
748 if (dac_db) {
749 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
750 PrintAndLogEx(NORMAL, "SDA verified OK. (%02hhx:%02hhx)\n", dac_tlv->value[0], dac_tlv->value[1]);
751 tlvdb_add(tlv, dac_db);
752 } else {
753 PrintAndLogEx(WARNING, "Error: SSAD verify error");
754 emv_pk_free(pk);
755 emv_pk_free(issuer_pk);
756 emv_pk_free(icc_pk);
757 return 4;
758 }
759
760 PrintAndLogEx(NORMAL, "\n* Calc DDOL");
761 const struct tlv *ddol_tlv = tlvdb_get(tlv, 0x9f49, NULL);
762 if (!ddol_tlv) {
763 ddol_tlv = &default_ddol_tlv;
764 PrintAndLogEx(NORMAL, "DDOL [9f49] not found. Using default DDOL");
765 }
766
767 struct tlv *ddol_data_tlv = dol_process(ddol_tlv, tlv, 0);
768 if (!ddol_data_tlv) {
769 PrintAndLogEx(WARNING, "Error: Can't create DDOL TLV");
770 emv_pk_free(pk);
771 emv_pk_free(issuer_pk);
772 emv_pk_free(icc_pk);
773 return 5;
774 }
775
776 PrintAndLogEx(NORMAL, "DDOL data[%d]: %s", ddol_data_tlv->len, sprint_hex(ddol_data_tlv->value, ddol_data_tlv->len));
777
778 PrintAndLogEx(NORMAL, "\n* Internal Authenticate");
779 int res = EMVInternalAuthenticate(channel, true, (uint8_t *)ddol_data_tlv->value, ddol_data_tlv->len, buf, sizeof(buf), &len, &sw, NULL);
780 if (res) {
781 PrintAndLogEx(WARNING, "Internal Authenticate error(%d): %4x. Exit...", res, sw);
782 free(ddol_data_tlv);
783 emv_pk_free(pk);
784 emv_pk_free(issuer_pk);
785 emv_pk_free(icc_pk);
786 return 6;
787 }
788
789 struct tlvdb *dda_db = NULL;
790 if (buf[0] == 0x80) {
791 if (len < 3 ) {
792 PrintAndLogEx(WARNING, "Error: Internal Authenticate format1 parsing error. length=%d", len);
793 } else {
794 // 9f4b Signed Dynamic Application Data
795 dda_db = tlvdb_fixed(0x9f4b, len - 2, buf + 2);
796 tlvdb_add(tlv, dda_db);
797 if (decodeTLV){
798 PrintAndLogEx(NORMAL, "* * Decode response format 1:");
799 TLVPrintFromTLV(dda_db);
800 }
801 }
802 } else {
803 dda_db = tlvdb_parse_multi(buf, len);
804 if(!dda_db) {
805 PrintAndLogEx(WARNING, "Error: Can't parse Internal Authenticate result as TLV");
806 free(ddol_data_tlv);
807 emv_pk_free(pk);
808 emv_pk_free(issuer_pk);
809 emv_pk_free(icc_pk);
810 return 7;
811 }
812 tlvdb_add(tlv, dda_db);
813
814 if (decodeTLV)
815 TLVPrintFromTLV(dda_db);
816 }
817
818 struct tlvdb *idn_db = emv_pki_recover_idn_ex(icc_pk, dda_db, ddol_data_tlv, true);
819 free(ddol_data_tlv);
820 if (!idn_db) {
821 PrintAndLogEx(WARNING, "Error: Can't recover IDN (ICC Dynamic Number)");
822 tlvdb_free(dda_db);
823 emv_pk_free(pk);
824 emv_pk_free(issuer_pk);
825 emv_pk_free(icc_pk);
826 return 8;
827 }
828 tlvdb_free(dda_db);
829
830 // 9f4c ICC Dynamic Number
831 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
832 if(idn_tlv) {
833 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
834 PrintAndLogEx(NORMAL, "DDA verified OK.");
835 tlvdb_add(tlv, idn_db);
836 tlvdb_free(idn_db);
837 } else {
838 PrintAndLogEx(NORMAL, "\nERROR: DDA verify error");
839 tlvdb_free(idn_db);
840
841 emv_pk_free(pk);
842 emv_pk_free(issuer_pk);
843 emv_pk_free(icc_pk);
844 return 9;
845 }
846 }
847
848 emv_pk_free(pk);
849 emv_pk_free(issuer_pk);
850 emv_pk_free(icc_pk);
851 return 0;
852 }
853
854 int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, struct tlv *ac_data_tlv) {
855
856 struct emv_pk *pk = get_ca_pk(tlv);
857 if (!pk) {
858 PrintAndLogEx(WARNING, "Error: Key not found. Exit.");
859 return 2;
860 }
861
862 const struct tlv *sda_tlv = tlvdb_get(tlv, 0x21, NULL);
863 if (!sda_tlv || sda_tlv->len < 1) {
864 PrintAndLogEx(WARNING, "Error: Can't find input list for Offline Data Authentication. Exit.");
865 emv_pk_free(pk);
866 return 3;
867 }
868
869 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlv);
870 if (!issuer_pk) {
871 PrintAndLogEx(WARNING, "Error: Issuer certificate not found. Exit.");
872 emv_pk_free(pk);
873 return 2;
874 }
875 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
876 issuer_pk->rid[0],
877 issuer_pk->rid[1],
878 issuer_pk->rid[2],
879 issuer_pk->rid[3],
880 issuer_pk->rid[4],
881 issuer_pk->index,
882 issuer_pk->serial[0],
883 issuer_pk->serial[1],
884 issuer_pk->serial[2]
885 );
886
887 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
888 if (!icc_pk) {
889 PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
890 emv_pk_free(pk);
891 emv_pk_free(issuer_pk);
892 return 2;
893 }
894 PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
895 icc_pk->rid[0],
896 icc_pk->rid[1],
897 icc_pk->rid[2],
898 icc_pk->rid[3],
899 icc_pk->rid[4],
900 icc_pk->index,
901 icc_pk->serial[0],
902 icc_pk->serial[1],
903 icc_pk->serial[2]
904 );
905
906 struct tlvdb *dac_db = emv_pki_recover_dac(issuer_pk, tlv, sda_tlv);
907 if (dac_db) {
908 const struct tlv *dac_tlv = tlvdb_get(dac_db, 0x9f45, NULL);
909 PrintAndLogEx(NORMAL, "SSAD verified OK. (%02hhx:%02hhx)", dac_tlv->value[0], dac_tlv->value[1]);
910 tlvdb_add(tlv, dac_db);
911 } else {
912 PrintAndLogEx(WARNING, "Error: SSAD verify error");
913 emv_pk_free(pk);
914 emv_pk_free(issuer_pk);
915 emv_pk_free(icc_pk);
916 return 4;
917 }
918
919 PrintAndLogEx(NORMAL, "\n* * Check Signed Dynamic Application Data (SDAD)");
920 struct tlvdb *idn_db = emv_pki_perform_cda_ex(icc_pk, tlv, ac_tlv,
921 pdol_data_tlv, // pdol
922 ac_data_tlv, // cdol1
923 NULL, // cdol2
924 true);
925 if (idn_db) {
926 const struct tlv *idn_tlv = tlvdb_get(idn_db, 0x9f4c, NULL);
927 PrintAndLogEx(NORMAL, "\nIDN (ICC Dynamic Number) [%zu] %s", idn_tlv->len, sprint_hex_inrow(idn_tlv->value, idn_tlv->len));
928 PrintAndLogEx(NORMAL, "CDA verified OK.");
929 tlvdb_add(tlv, idn_db);
930 } else {
931 PrintAndLogEx(NORMAL, "\nERROR: CDA verify error");
932 }
933
934 emv_pk_free(pk);
935 emv_pk_free(issuer_pk);
936 emv_pk_free(icc_pk);
937 return 0;
938 }
939
940 int RecoveryCertificates(struct tlvdb *tlvRoot, json_t *root) {
941
942 struct emv_pk *pk = get_ca_pk(tlvRoot);
943 if (!pk) {
944 PrintAndLog("ERROR: Key not found. Exit.");
945 return 1;
946 }
947
948 struct emv_pk *issuer_pk = emv_pki_recover_issuer_cert(pk, tlvRoot);
949 if (!issuer_pk) {
950 emv_pk_free(pk);
951 PrintAndLog("WARNING: Issuer certificate not found. Exit.");
952 return 2;
953 }
954 PrintAndLogEx(SUCCESS, "Issuer PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx",
955 issuer_pk->rid[0],
956 issuer_pk->rid[1],
957 issuer_pk->rid[2],
958 issuer_pk->rid[3],
959 issuer_pk->rid[4],
960 issuer_pk->index,
961 issuer_pk->serial[0],
962 issuer_pk->serial[1],
963 issuer_pk->serial[2]
964 );
965
966 JsonSaveBufAsHex(root, "$.ApplicationData.RID", issuer_pk->rid, 5);
967
968 char *issuer_pk_c = emv_pk_dump_pk(issuer_pk);
969 JsonSaveStr(root, "$.ApplicationData.IssuerPublicKeyDec", issuer_pk_c);
970 JsonSaveBufAsHex(root, "$.ApplicationData.IssuerPublicKeyModulus", issuer_pk->modulus, issuer_pk->mlen);
971 free(issuer_pk_c);
972
973 struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlvRoot, NULL);
974 if (!icc_pk) {
975 emv_pk_free(pk);
976 emv_pk_free(issuer_pk);
977 PrintAndLogEx(WARNING, "WARNING: ICC certificate not found. Exit.");
978 return 2;
979 }
980 PrintAndLogEx(SUCCESS, "ICC PK recovered. RID %02hhx:%02hhx:%02hhx:%02hhx:%02hhx IDX %02hhx CSN %02hhx:%02hhx:%02hhx\n",
981 icc_pk->rid[0],
982 icc_pk->rid[1],
983 icc_pk->rid[2],
984 icc_pk->rid[3],
985 icc_pk->rid[4],
986 icc_pk->index,
987 icc_pk->serial[0],
988 icc_pk->serial[1],
989 icc_pk->serial[2]
990 );
991
992 char *icc_pk_c = emv_pk_dump_pk(icc_pk);
993 JsonSaveStr(root, "$.ApplicationData.ICCPublicKeyDec", icc_pk_c);
994 JsonSaveBufAsHex(root, "$.ApplicationData.ICCPublicKeyModulus", icc_pk->modulus, icc_pk->mlen);
995 free(issuer_pk_c);
996
997 return 0;
998 }
Proxmark3 GIT tracking
Impressum, Datenschutz