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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 commands
9 //-----------------------------------------------------------------------------
10
11 #include <stdio.h>
12 #include <string.h>
13 #include "proxmark3.h"
14 #include "graph.h"
15 #include "ui.h"
16 #include "cmdparser.h"
17 #include "cmdhf.h"
18 #include "cmdhf14a.h"
19 #include "cmdhf14b.h"
20 #include "cmdhf15.h"
21 #include "cmdhfepa.h"
22 #include "cmdhflegic.h"
23 #include "cmdhficlass.h"
24 #include "cmdhfmf.h"
25 #include "cmdhfmfu.h"
26 #include "protocols.h"
27
28 static int CmdHelp(const char *Cmd);
29
30 int CmdHFTune(const char *Cmd)
31 {
32 UsbCommand c={CMD_MEASURE_ANTENNA_TUNING_HF};
33 SendCommand(&c);
34 return 0;
35 }
36
37
38 void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
39 {
40 switch(cmd[0])
41 {
42 case ISO14443A_CMD_WUPA: snprintf(exp,size,"WUPA"); break;
43 case ISO14443A_CMD_ANTICOLL_OR_SELECT:{
44 // 93 20 = Anticollision (usage: 9320 - answer: 4bytes UID+1byte UID-bytes-xor)
45 // 93 70 = Select (usage: 9370+5bytes 9320 answer - answer: 1byte SAK)
46 if(cmd[1] == 0x70)
47 {
48 snprintf(exp,size,"SELECT_UID"); break;
49 }else
50 {
51 snprintf(exp,size,"ANTICOLL"); break;
52 }
53 }
54 case ISO14443A_CMD_ANTICOLL_OR_SELECT_2:{
55 //95 20 = Anticollision of cascade level2
56 //95 70 = Select of cascade level2
57 if(cmd[2] == 0x70)
58 {
59 snprintf(exp,size,"SELECT_UID-2"); break;
60 }else
61 {
62 snprintf(exp,size,"ANTICOLL-2"); break;
63 }
64 }
65 case ISO14443A_CMD_REQA: snprintf(exp,size,"REQA"); break;
66 case ISO14443A_CMD_READBLOCK: snprintf(exp,size,"READBLOCK(%d)",cmd[1]); break;
67 case ISO14443A_CMD_WRITEBLOCK: snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]); break;
68 case ISO14443A_CMD_HALT: snprintf(exp,size,"HALT"); break;
69 case ISO14443A_CMD_RATS: snprintf(exp,size,"RATS"); break;
70 case MIFARE_CMD_INC: snprintf(exp,size,"INC(%d)",cmd[1]); break;
71 case MIFARE_CMD_DEC: snprintf(exp,size,"DEC(%d)",cmd[1]); break;
72 case MIFARE_CMD_RESTORE: snprintf(exp,size,"RESTORE(%d)",cmd[1]); break;
73 case MIFARE_CMD_TRANSFER: snprintf(exp,size,"TRANSFER(%d)",cmd[1]); break;
74 case MIFARE_AUTH_KEYA:{
75 if ( cmdsize > 3)
76 snprintf(exp,size,"AUTH-A(%d)",cmd[1]);
77 else
78 // case MIFARE_ULEV1_VERSION : both 0x60.
79 snprintf(exp,size,"EV1 VERSION");
80 break;
81 }
82 case MIFARE_AUTH_KEYB: snprintf(exp,size,"AUTH-B(%d)",cmd[1]); break;
83 case MIFARE_MAGICWUPC1: snprintf(exp,size,"MAGIC WUPC1"); break;
84 case MIFARE_MAGICWUPC2: snprintf(exp,size,"MAGIC WUPC2"); break;
85 case MIFARE_MAGICWIPEC: snprintf(exp,size,"MAGIC WIPEC"); break;
86 case MIFARE_ULC_AUTH_1: snprintf(exp,size,"AUTH "); break;
87 case MIFARE_ULC_AUTH_2: snprintf(exp,size,"AUTH_ANSW"); break;
88 case MIFARE_ULEV1_AUTH: snprintf(exp,size,"PWD-AUTH"); break;
89 case MIFARE_ULEV1_FASTREAD:{
90 if ( cmdsize >=3 && cmd[2] < 0x21)
91 snprintf(exp,size,"READ RANGE (%d-%d)",cmd[1],cmd[2]);
92 else
93 snprintf(exp,size,"?");
94 break;
95 }
96 case MIFARE_ULEV1_WRITE:{
97 if ( cmd[1] < 0x21 )
98 snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]);
99 else
100 snprintf(exp,size,"?");
101 break;
102 }
103 case MIFARE_ULEV1_READ_CNT:{
104 if ( cmd[1] < 5 )
105 snprintf(exp,size,"READ CNT(%d)",cmd[1]);
106 else
107 snprintf(exp,size,"?");
108 break;
109 }
110 case MIFARE_ULEV1_INCR_CNT:{
111 if ( cmd[1] < 5 )
112 snprintf(exp,size,"INCR(%d)",cmd[1]);
113 else
114 snprintf(exp,size,"?");
115 break;
116 }
117 case MIFARE_ULEV1_READSIG: snprintf(exp,size,"READ_SIG"); break;
118 case MIFARE_ULEV1_CHECKTEAR: snprintf(exp,size,"CHK_TEARING(%d)",cmd[1]); break;
119 case MIFARE_ULEV1_VCSL: snprintf(exp,size,"VCSL"); break;
120 default: snprintf(exp,size,"?"); break;
121 }
122 return;
123 }
124
125 void annotateIclass(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
126 {
127 switch(cmd[0])
128 {
129 case ICLASS_CMD_ACTALL: snprintf(exp,size,"ACTALL"); break;
130 case ICLASS_CMD_READ_OR_IDENTIFY:{
131 if(cmdsize > 1){
132 snprintf(exp,size,"READ(%d)",cmd[1]);
133 }else{
134 snprintf(exp,size,"IDENTIFY");
135 }
136 break;
137 }
138 case ICLASS_CMD_SELECT: snprintf(exp,size,"SELECT"); break;
139 case ICLASS_CMD_PAGESEL: snprintf(exp,size,"PAGESEL(%d)", cmd[1]); break;
140 case ICLASS_CMD_READCHECK_KC:snprintf(exp,size,"READCHECK[Kc](%d)", cmd[1]); break;
141 case ICLASS_CMD_READCHECK_KD:snprintf(exp,size,"READCHECK[Kd](%d)", cmd[1]); break;
142 case ICLASS_CMD_CHECK: snprintf(exp,size,"CHECK"); break;
143 case ICLASS_CMD_DETECT: snprintf(exp,size,"DETECT"); break;
144 case ICLASS_CMD_HALT: snprintf(exp,size,"HALT"); break;
145 case ICLASS_CMD_UPDATE: snprintf(exp,size,"UPDATE(%d)",cmd[1]); break;
146 case ICLASS_CMD_ACT: snprintf(exp,size,"ACT"); break;
147 case ICLASS_CMD_READ4: snprintf(exp,size,"READ4(%d)",cmd[1]); break;
148 default: snprintf(exp,size,"?"); break;
149 }
150 return;
151 }
152
153 void annotateIso15693(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
154 {
155
156 if(cmd[0] == 0x26)
157 {
158 switch(cmd[1]){
159 case ISO15693_INVENTORY :snprintf(exp, size, "INVENTORY");break;
160 case ISO15693_STAYQUIET :snprintf(exp, size, "STAY_QUIET");break;
161 default: snprintf(exp,size,"?"); break;
162
163 }
164 }else if(cmd[0] == 0x02)
165 {
166 switch(cmd[1])
167 {
168 case ISO15693_READBLOCK :snprintf(exp, size, "READBLOCK");break;
169 case ISO15693_WRITEBLOCK :snprintf(exp, size, "WRITEBLOCK");break;
170 case ISO15693_LOCKBLOCK :snprintf(exp, size, "LOCKBLOCK");break;
171 case ISO15693_READ_MULTI_BLOCK :snprintf(exp, size, "READ_MULTI_BLOCK");break;
172 case ISO15693_SELECT :snprintf(exp, size, "SELECT");break;
173 case ISO15693_RESET_TO_READY :snprintf(exp, size, "RESET_TO_READY");break;
174 case ISO15693_WRITE_AFI :snprintf(exp, size, "WRITE_AFI");break;
175 case ISO15693_LOCK_AFI :snprintf(exp, size, "LOCK_AFI");break;
176 case ISO15693_WRITE_DSFID :snprintf(exp, size, "WRITE_DSFID");break;
177 case ISO15693_LOCK_DSFID :snprintf(exp, size, "LOCK_DSFID");break;
178 case ISO15693_GET_SYSTEM_INFO :snprintf(exp, size, "GET_SYSTEM_INFO");break;
179 case ISO15693_READ_MULTI_SECSTATUS :snprintf(exp, size, "READ_MULTI_SECSTATUS");break;
180 default: snprintf(exp,size,"?"); break;
181 }
182 }
183 }
184
185 /**
186 06 00 = INITIATE
187 0E xx = SELECT ID (xx = Chip-ID)
188 0B = Get UID
189 08 yy = Read Block (yy = block number)
190 09 yy dd dd dd dd = Write Block (yy = block number; dd dd dd dd = data to be written)
191 0C = Reset to Inventory
192 0F = Completion
193 0A 11 22 33 44 55 66 = Authenticate (11 22 33 44 55 66 = data to authenticate)
194 **/
195
196 void annotateIso14443b(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
197 {
198 switch(cmd[0]){
199 case ISO14443B_REQB : snprintf(exp,size,"REQB");break;
200 case ISO14443B_ATTRIB : snprintf(exp,size,"ATTRIB");break;
201 case ISO14443B_HALT : snprintf(exp,size,"HALT");break;
202 case ISO14443B_INITIATE : snprintf(exp,size,"INITIATE");break;
203 case ISO14443B_SELECT : snprintf(exp,size,"SELECT(%d)",cmd[1]);break;
204 case ISO14443B_GET_UID : snprintf(exp,size,"GET UID");break;
205 case ISO14443B_READ_BLK : snprintf(exp,size,"READ_BLK(%d)", cmd[1]);break;
206 case ISO14443B_WRITE_BLK : snprintf(exp,size,"WRITE_BLK(%d)",cmd[1]);break;
207 case ISO14443B_RESET : snprintf(exp,size,"RESET");break;
208 case ISO14443B_COMPLETION : snprintf(exp,size,"COMPLETION");break;
209 case ISO14443B_AUTHENTICATE : snprintf(exp,size,"AUTHENTICATE");break;
210 default : snprintf(exp,size ,"?");break;
211 }
212
213 }
214
215 /**
216 * @brief iso14443B_CRC_Ok Checks CRC in command or response
217 * @param isResponse
218 * @param data
219 * @param len
220 * @return 0 : CRC-command, CRC not ok
221 * 1 : CRC-command, CRC ok
222 * 2 : Not crc-command
223 */
224
225 uint8_t iso14443B_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
226 {
227 uint8_t b1,b2;
228
229 if(len <= 2) return 2;
230
231 ComputeCrc14443(CRC_14443_B, data, len-2, &b1, &b2);
232 if(b1 != data[len-2] || b2 != data[len-1]) {
233 return 0;
234 }
235 return 1;
236 }
237
238 /**
239 * @brief iclass_CRC_Ok Checks CRC in command or response
240 * @param isResponse
241 * @param data
242 * @param len
243 * @return 0 : CRC-command, CRC not ok
244 * 1 : CRC-command, CRC ok
245 * 2 : Not crc-command
246 */
247 uint8_t iclass_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
248 {
249 if(len < 4) return 2;//CRC commands (and responses) are all at least 4 bytes
250
251 uint8_t b1, b2;
252
253 if(!isResponse)//Commands to tag
254 {
255 /**
256 These commands should have CRC. Total length leftmost
257 4 READ
258 4 READ4
259 12 UPDATE - unsecured, ends with CRC16
260 14 UPDATE - secured, ends with signature instead
261 4 PAGESEL
262 **/
263 if(len == 4 || len == 12)//Covers three of them
264 {
265 //Don't include the command byte
266 ComputeCrc14443(CRC_ICLASS, (data+1), len-3, &b1, &b2);
267 return b1 == data[len -2] && b2 == data[len-1];
268 }
269 return 2;
270 }else{
271 /**
272 These tag responses should have CRC. Total length leftmost
273
274 10 READ data[8] crc[2]
275 34 READ4 data[32]crc[2]
276 10 UPDATE data[8] crc[2]
277 10 SELECT csn[8] crc[2]
278 10 IDENTIFY asnb[8] crc[2]
279 10 PAGESEL block1[8] crc[2]
280 10 DETECT csn[8] crc[2]
281
282 These should not
283
284 4 CHECK chip_response[4]
285 8 READCHECK data[8]
286 1 ACTALL sof[1]
287 1 ACT sof[1]
288
289 In conclusion, without looking at the command; any response
290 of length 10 or 34 should have CRC
291 **/
292 if(len != 10 && len != 34) return true;
293
294 ComputeCrc14443(CRC_ICLASS, data, len-2, &b1, &b2);
295 return b1 == data[len -2] && b2 == data[len-1];
296 }
297 }
298
299 uint16_t printTraceLine(uint16_t tracepos, uint16_t traceLen, uint8_t *trace, uint8_t protocol, bool showWaitCycles)
300 {
301 bool isResponse;
302 uint16_t duration, data_len, parity_len;
303
304 uint32_t timestamp, first_timestamp, EndOfTransmissionTimestamp;
305 char explanation[30] = {0};
306
307 if (tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) > traceLen) return traceLen;
308
309 first_timestamp = *((uint32_t *)(trace));
310 timestamp = *((uint32_t *)(trace + tracepos));
311
312 tracepos += 4;
313 duration = *((uint16_t *)(trace + tracepos));
314 tracepos += 2;
315 data_len = *((uint16_t *)(trace + tracepos));
316 tracepos += 2;
317
318 if (data_len & 0x8000) {
319 data_len &= 0x7fff;
320 isResponse = true;
321 } else {
322 isResponse = false;
323 }
324 parity_len = (data_len-1)/8 + 1;
325
326 if (tracepos + data_len + parity_len > traceLen) {
327 return traceLen;
328 }
329 uint8_t *frame = trace + tracepos;
330 tracepos += data_len;
331 uint8_t *parityBytes = trace + tracepos;
332 tracepos += parity_len;
333
334 //Check the CRC status
335 uint8_t crcStatus = 2;
336
337 if (data_len > 2) {
338 uint8_t b1, b2;
339 if(protocol == ICLASS)
340 {
341 crcStatus = iclass_CRC_check(isResponse, frame, data_len);
342
343 }else if (protocol == ISO_14443B)
344 {
345 crcStatus = iso14443B_CRC_check(isResponse, frame, data_len);
346 }
347 else if (protocol == ISO_14443A){//Iso 14443a
348
349 ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
350
351 if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
352 if(!(isResponse & (data_len < 6)))
353 {
354 crcStatus = 0;
355 }
356 }
357 }
358 }
359 //0 CRC-command, CRC not ok
360 //1 CRC-command, CRC ok
361 //2 Not crc-command
362
363 //--- Draw the data column
364 //char line[16][110];
365 char line[16][110];
366
367 for (int j = 0; j < data_len && j/16 < 16; j++) {
368
369 int oddparity = 0x01;
370 int k;
371
372 for (k=0 ; k<8 ; k++) {
373 oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
374 }
375 uint8_t parityBits = parityBytes[j>>3];
376 if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
377 snprintf(line[j/16]+(( j % 16) * 4),110, "%02x! ", frame[j]);
378
379 } else {
380 snprintf(line[j/16]+(( j % 16) * 4),110, "%02x ", frame[j]);
381 }
382
383 }
384 if(crcStatus == 1)
385 {//CRC-command
386 char *pos1 = line[(data_len-2)/16]+(((data_len-2) % 16) * 4)-1;
387 (*pos1) = '[';
388 char *pos2 = line[(data_len)/16]+(((data_len) % 16) * 4)-2;
389 (*pos2) = ']';
390 }
391 if(data_len == 0)
392 {
393 if(data_len == 0){
394 sprintf(line[0],"<empty trace - possible error>");
395 }
396 }
397 //--- Draw the CRC column
398
399 char *crc = (crcStatus == 0 ? "!crc" : (crcStatus == 1 ? " ok " : " "));
400
401 EndOfTransmissionTimestamp = timestamp + duration;
402
403 if(!isResponse)
404 {
405 if(protocol == ICLASS)
406 annotateIclass(explanation,sizeof(explanation),frame,data_len);
407 else if (protocol == ISO_14443A)
408 annotateIso14443a(explanation,sizeof(explanation),frame,data_len);
409 else if(protocol == ISO_14443B)
410 annotateIso14443b(explanation,sizeof(explanation),frame,data_len);
411 }
412
413 int num_lines = MIN((data_len - 1)/16 + 1, 16);
414 for (int j = 0; j < num_lines ; j++) {
415 if (j == 0) {
416 PrintAndLog(" %9d | %9d | %s | %-64s| %s| %s",
417 (timestamp - first_timestamp),
418 (EndOfTransmissionTimestamp - first_timestamp),
419 (isResponse ? "Tag" : "Rdr"),
420 line[j],
421 (j == num_lines-1) ? crc : " ",
422 (j == num_lines-1) ? explanation : "");
423 } else {
424 PrintAndLog(" | | | %-64s| %s| %s",
425 line[j],
426 (j == num_lines-1)?crc:" ",
427 (j == num_lines-1) ? explanation : "");
428 }
429 }
430
431 if (tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) > traceLen) return traceLen;
432
433 bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
434
435 if (showWaitCycles && !isResponse && next_isResponse) {
436 uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
437 if (next_timestamp != 0x44444444) {
438 PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
439 (EndOfTransmissionTimestamp - first_timestamp),
440 (next_timestamp - first_timestamp),
441 " ",
442 (next_timestamp - EndOfTransmissionTimestamp));
443 }
444 }
445
446 return tracepos;
447 }
448
449
450 int CmdHFList(const char *Cmd)
451 {
452 bool showWaitCycles = false;
453 char type[40] = {0};
454 int tlen = param_getstr(Cmd,0,type);
455 char param = param_getchar(Cmd, 1);
456 bool errors = false;
457 uint8_t protocol = 0;
458 //Validate params
459 if(tlen == 0)
460 {
461 errors = true;
462 }
463 if(param == 'h' || (param !=0 && param != 'f'))
464 {
465 errors = true;
466 }
467 if(!errors)
468 {
469 if(strcmp(type, "iclass") == 0)
470 {
471 protocol = ICLASS;
472 }else if(strcmp(type, "14a") == 0)
473 {
474 protocol = ISO_14443A;
475 }
476 else if(strcmp(type, "14b") == 0)
477 {
478 protocol = ISO_14443B;
479 }else if(strcmp(type,"raw")== 0)
480 {
481 protocol = -1;//No crc, no annotations
482 }else{
483 errors = true;
484 }
485 }
486
487 if (errors) {
488 PrintAndLog("List protocol data in trace buffer.");
489 PrintAndLog("Usage: hf list <protocol> [f]");
490 PrintAndLog(" f - show frame delay times as well");
491 PrintAndLog("Supported <protocol> values:");
492 PrintAndLog(" raw - just show raw data without annotations");
493 PrintAndLog(" 14a - interpret data as iso14443a communications");
494 PrintAndLog(" 14b - interpret data as iso14443b communications");
495 PrintAndLog(" iclass - interpret data as iclass communications");
496 PrintAndLog("");
497 PrintAndLog("example: hf list 14a f");
498 PrintAndLog("example: hf list iclass");
499 return 0;
500 }
501
502
503 if (param == 'f') {
504 showWaitCycles = true;
505 }
506
507
508 uint8_t *trace;
509 uint16_t tracepos = 0;
510 trace = malloc(USB_CMD_DATA_SIZE);
511
512 // Query for the size of the trace
513 UsbCommand response;
514 GetFromBigBuf(trace, USB_CMD_DATA_SIZE, 0);
515 WaitForResponse(CMD_ACK, &response);
516 uint16_t traceLen = response.arg[2];
517 if (traceLen > USB_CMD_DATA_SIZE) {
518 uint8_t *p = realloc(trace, traceLen);
519 if (p == NULL) {
520 PrintAndLog("Cannot allocate memory for trace");
521 free(trace);
522 return 2;
523 }
524 trace = p;
525 GetFromBigBuf(trace, traceLen, 0);
526 WaitForResponse(CMD_ACK, NULL);
527 }
528
529 PrintAndLog("Recorded Activity (TraceLen = %d bytes)", traceLen);
530 PrintAndLog("");
531 PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
532 PrintAndLog("iso14443a - All times are in carrier periods (1/13.56Mhz)");
533 PrintAndLog("iClass - Timings are not as accurate");
534 PrintAndLog("");
535 PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC | Annotation |");
536 PrintAndLog("-----------|-----------|-----|-----------------------------------------------------------------|-----|--------------------|");
537
538 while(tracepos < traceLen)
539 {
540 tracepos = printTraceLine(tracepos, traceLen, trace, protocol, showWaitCycles);
541 }
542
543 free(trace);
544 return 0;
545 }
546
547
548 static command_t CommandTable[] =
549 {
550 {"help", CmdHelp, 1, "This help"},
551 {"14a", CmdHF14A, 1, "{ ISO14443A RFIDs... }"},
552 {"14b", CmdHF14B, 1, "{ ISO14443B RFIDs... }"},
553 {"15", CmdHF15, 1, "{ ISO15693 RFIDs... }"},
554 {"epa", CmdHFEPA, 1, "{ German Identification Card... }"},
555 {"legic", CmdHFLegic, 0, "{ LEGIC RFIDs... }"},
556 {"iclass", CmdHFiClass, 1, "{ ICLASS RFIDs... }"},
557 {"mf", CmdHFMF, 1, "{ MIFARE RFIDs... }"},
558 {"mfu", CmdHFMFUltra, 1, "{ MIFARE Ultralight RFIDs... }"},
559 {"tune", CmdHFTune, 0, "Continuously measure HF antenna tuning"},
560 {"list", CmdHFList, 1, "List protocol data in trace buffer"},
561 {NULL, NULL, 0, NULL}
562 };
563
564 int CmdHF(const char *Cmd)
565 {
566 CmdsParse(CommandTable, Cmd);
567 return 0;
568 }
569
570 int CmdHelp(const char *Cmd)
571 {
572 CmdsHelp(CommandTable);
573 return 0;
574 }
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