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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
26 static int CmdHelp(const char *Cmd);
27
28 int CmdHFTune(const char *Cmd)
29 {
30 UsbCommand c={CMD_MEASURE_ANTENNA_TUNING_HF};
31 SendCommand(&c);
32 return 0;
33 }
34 // for the time being. Need better Bigbuf handling.
35 #define TRACE_SIZE 3000
36
37 //The following data is taken from http://www.proxmark.org/forum/viewtopic.php?pid=13501#p13501
38 /*
39 ISO14443A (usually NFC tags)
40 26 (7bits) = REQA
41 30 = Read (usage: 30+1byte block number+2bytes ISO14443A-CRC - answer: 16bytes)
42 A2 = Write (usage: A2+1byte block number+4bytes data+2bytes ISO14443A-CRC - answer: 0A [ACK] or 00 [NAK])
43 52 (7bits) = WUPA (usage: 52(7bits) - answer: 2bytes ATQA)
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 95 20 = Anticollision of cascade level2
47 95 70 = Select of cascade level2
48 50 00 = Halt (usage: 5000+2bytes ISO14443A-CRC - no answer from card)
49 Mifare
50 60 = Authenticate with KeyA
51 61 = Authenticate with KeyB
52 40 (7bits) = Used to put Chinese Changeable UID cards in special mode (must be followed by 43 (8bits) - answer: 0A)
53 C0 = Decrement
54 C1 = Increment
55 C2 = Restore
56 B0 = Transfer
57 Ultralight C
58 A0 = Compatibility Write (to accomodate MIFARE commands)
59 1A = Step1 Authenticate
60 AF = Step2 Authenticate
61
62
63 ISO14443B
64 05 = REQB
65 1D = ATTRIB
66 50 = HALT
67 SRIX4K (tag does not respond to 05)
68 06 00 = INITIATE
69 0E xx = SELECT ID (xx = Chip-ID)
70 0B = Get UID
71 08 yy = Read Block (yy = block number)
72 09 yy dd dd dd dd = Write Block (yy = block number; dd dd dd dd = data to be written)
73 0C = Reset to Inventory
74 0F = Completion
75 0A 11 22 33 44 55 66 = Authenticate (11 22 33 44 55 66 = data to authenticate)
76
77
78 ISO15693
79 MANDATORY COMMANDS (all ISO15693 tags must support those)
80 01 = Inventory (usage: 260100+2bytes ISO15693-CRC - answer: 12bytes)
81 02 = Stay Quiet
82 OPTIONAL COMMANDS (not all tags support them)
83 20 = Read Block (usage: 0220+1byte block number+2bytes ISO15693-CRC - answer: 4bytes)
84 21 = Write Block (usage: 0221+1byte block number+4bytes data+2bytes ISO15693-CRC - answer: 4bytes)
85 22 = Lock Block
86 23 = Read Multiple Blocks (usage: 0223+1byte 1st block to read+1byte last block to read+2bytes ISO15693-CRC)
87 25 = Select
88 26 = Reset to Ready
89 27 = Write AFI
90 28 = Lock AFI
91 29 = Write DSFID
92 2A = Lock DSFID
93 2B = Get_System_Info (usage: 022B+2bytes ISO15693-CRC - answer: 14 or more bytes)
94 2C = Read Multiple Block Security Status (usage: 022C+1byte 1st block security to read+1byte last block security to read+2bytes ISO15693-CRC)
95
96 EM Microelectronic CUSTOM COMMANDS
97 A5 = Active EAS (followed by 1byte IC Manufacturer code+1byte EAS type)
98 A7 = Write EAS ID (followed by 1byte IC Manufacturer code+2bytes EAS value)
99 B8 = Get Protection Status for a specific block (followed by 1byte IC Manufacturer code+1byte block number+1byte of how many blocks after the previous is needed the info)
100 E4 = Login (followed by 1byte IC Manufacturer code+4bytes password)
101 NXP/Philips CUSTOM COMMANDS
102 A0 = Inventory Read
103 A1 = Fast Inventory Read
104 A2 = Set EAS
105 A3 = Reset EAS
106 A4 = Lock EAS
107 A5 = EAS Alarm
108 A6 = Password Protect EAS
109 A7 = Write EAS ID
110 A8 = Read EPC
111 B0 = Inventory Page Read
112 B1 = Fast Inventory Page Read
113 B2 = Get Random Number
114 B3 = Set Password
115 B4 = Write Password
116 B5 = Lock Password
117 B6 = Bit Password Protection
118 B7 = Lock Page Protection Condition
119 B8 = Get Multiple Block Protection Status
120 B9 = Destroy SLI
121 BA = Enable Privacy
122 BB = 64bit Password Protection
123 40 = Long Range CMD (Standard ISO/TR7003:1990)
124 */
125
126 #define ICLASS_CMD_ACTALL 0x0A
127 #define ICLASS_CMD_READ_OR_IDENTIFY 0x0C
128 #define ICLASS_CMD_SELECT 0x81
129 #define ICLASS_CMD_PAGESEL 0x84
130 #define ICLASS_CMD_READCHECK_KD 0x88
131 #define ICLASS_CMD_READCHECK_KC 0x18
132 #define ICLASS_CMD_CHECK 0x05
133 #define ICLASS_CMD_DETECT 0x0F
134 #define ICLASS_CMD_HALT 0x00
135 #define ICLASS_CMD_UPDATE 0x87
136 #define ICLASS_CMD_ACT 0x8E
137 #define ICLASS_CMD_READ4 0x06
138
139
140 #define ISO14443_CMD_REQA 0x26
141 #define ISO14443_CMD_READBLOCK 0x30
142 #define ISO14443_CMD_WUPA 0x52
143 #define ISO14443_CMD_ANTICOLL_OR_SELECT 0x93
144 #define ISO14443_CMD_ANTICOLL_OR_SELECT_2 0x95
145 #define ISO14443_CMD_WRITEBLOCK 0xA0 // or 0xA2 ?
146 #define ISO14443_CMD_HALT 0x50
147 #define ISO14443_CMD_RATS 0xE0
148
149 #define MIFARE_AUTH_KEYA 0x60
150 #define MIFARE_AUTH_KEYB 0x61
151 #define MIFARE_MAGICMODE 0x40
152 #define MIFARE_CMD_INC 0xC0
153 #define MIFARE_CMD_DEC 0xC1
154 #define MIFARE_CMD_RESTORE 0xC2
155 #define MIFARE_CMD_TRANSFER 0xB0
156
157 #define MIFARE_ULC_WRITE 0xA0
158 #define MIFARE_ULC_AUTH_1 0x1A
159 #define MIFARE_ULC_AUTH_2 0xAF
160
161 #define ISO14443B_REQB 0x05
162 #define ISO14443B_ATTRIB 0x1D
163 #define ISO14443B_HALT 0x50
164
165 //First byte is 26
166 #define ISO15693_INVENTORY 0x01
167 #define ISO15693_STAYQUIET 0x02
168 //First byte is 02
169 #define ISO15693_READBLOCK 0x20
170 #define ISO15693_WRITEBLOCK 0x21
171 #define ISO15693_LOCKBLOCK 0x22
172 #define ISO15693_READ_MULTI_BLOCK 0x23
173 #define ISO15693_SELECT 0x25
174 #define ISO15693_RESET_TO_READY 0x26
175 #define ISO15693_WRITE_AFI 0x27
176 #define ISO15693_LOCK_AFI 0x28
177 #define ISO15693_WRITE_DSFID 0x29
178 #define ISO15693_LOCK_DSFID 0x2A
179 #define ISO15693_GET_SYSTEM_INFO 0x2B
180 #define ISO15693_READ_MULTI_SECSTATUS 0x2C
181
182
183
184
185 void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
186 {
187 switch(cmd[0])
188 {
189 case ISO14443_CMD_WUPA: snprintf(exp,size,"WUPA"); break;
190 case ISO14443_CMD_ANTICOLL_OR_SELECT:{
191 // 93 20 = Anticollision (usage: 9320 - answer: 4bytes UID+1byte UID-bytes-xor)
192 // 93 70 = Select (usage: 9370+5bytes 9320 answer - answer: 1byte SAK)
193 if(cmd[2] == 0x70)
194 {
195 snprintf(exp,size,"SELECT_UID"); break;
196 }else
197 {
198 snprintf(exp,size,"ANTICOLL"); break;
199 }
200 }
201 case ISO14443_CMD_ANTICOLL_OR_SELECT_2:{
202 //95 20 = Anticollision of cascade level2
203 //95 70 = Select of cascade level2
204 if(cmd[2] == 0x70)
205 {
206 snprintf(exp,size,"SELECT_UID-2"); break;
207 }else
208 {
209 snprintf(exp,size,"ANTICOLL-2"); break;
210 }
211 }
212 case ISO14443_CMD_REQA: snprintf(exp,size,"REQA"); break;
213 case ISO14443_CMD_READBLOCK: snprintf(exp,size,"READBLOCK(%d)",cmd[1]); break;
214 case ISO14443_CMD_WRITEBLOCK: snprintf(exp,size,"WRITEBLOCK(%d)",cmd[1]); break;
215 case ISO14443_CMD_HALT: snprintf(exp,size,"HALT"); break;
216 case ISO14443_CMD_RATS: snprintf(exp,size,"RATS"); break;
217 case MIFARE_CMD_INC: snprintf(exp,size,"INC(%d)",cmd[1]); break;
218 case MIFARE_CMD_DEC: snprintf(exp,size,"DEC(%d)",cmd[1]); break;
219 case MIFARE_CMD_RESTORE: snprintf(exp,size,"RESTORE(%d)",cmd[1]); break;
220 case MIFARE_CMD_TRANSFER: snprintf(exp,size,"TRANSFER(%d)",cmd[1]); break;
221 case MIFARE_AUTH_KEYA: snprintf(exp,size,"AUTH-A"); break;
222 case MIFARE_AUTH_KEYB: snprintf(exp,size,"AUTH-B"); break;
223 case MIFARE_MAGICMODE: snprintf(exp,size,"MAGIC"); break;
224 default: snprintf(exp,size,"?"); break;
225 }
226 return;
227 }
228
229 void annotateIclass(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
230 {
231 switch(cmd[0])
232 {
233 case ICLASS_CMD_ACTALL: snprintf(exp,size,"ACTALL"); break;
234 case ICLASS_CMD_READ_OR_IDENTIFY:{
235 if(cmdsize > 1){
236 snprintf(exp,size,"READ(%d)",cmd[1]);
237 }else{
238 snprintf(exp,size,"IDENTIFY");
239 }
240 break;
241 }
242 case ICLASS_CMD_SELECT: snprintf(exp,size,"SELECT"); break;
243 case ICLASS_CMD_PAGESEL: snprintf(exp,size,"PAGESEL(%d)", cmd[1]); break;
244 case ICLASS_CMD_READCHECK_KC:snprintf(exp,size,"READCHECK[Kc](%d)", cmd[1]); break;
245 case ICLASS_CMD_READCHECK_KD:snprintf(exp,size,"READCHECK[Kd](%d)", cmd[1]); break;
246 case ICLASS_CMD_CHECK: snprintf(exp,size,"CHECK"); break;
247 case ICLASS_CMD_DETECT: snprintf(exp,size,"DETECT"); break;
248 case ICLASS_CMD_HALT: snprintf(exp,size,"HALT"); break;
249 case ICLASS_CMD_UPDATE: snprintf(exp,size,"UPDATE(%d)",cmd[1]); break;
250 case ICLASS_CMD_ACT: snprintf(exp,size,"ACT"); break;
251 case ICLASS_CMD_READ4: snprintf(exp,size,"READ4(%d)",cmd[1]); break;
252 default: snprintf(exp,size,"?"); break;
253 }
254 return;
255 }
256
257 void annotateIso15693(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
258 {
259
260 if(cmd[0] == 0x26)
261 {
262 switch(cmd[1]){
263 case ISO15693_INVENTORY :snprintf(exp, size, "INVENTORY");break;
264 case ISO15693_STAYQUIET :snprintf(exp, size, "STAY_QUIET");break;
265 default: snprintf(exp,size,"?"); break;
266
267 }
268 }else if(cmd[0] == 0x02)
269 {
270 switch(cmd[1])
271 {
272 case ISO15693_READBLOCK :snprintf(exp, size, "READBLOCK");break;
273 case ISO15693_WRITEBLOCK :snprintf(exp, size, "WRITEBLOCK");break;
274 case ISO15693_LOCKBLOCK :snprintf(exp, size, "LOCKBLOCK");break;
275 case ISO15693_READ_MULTI_BLOCK :snprintf(exp, size, "READ_MULTI_BLOCK");break;
276 case ISO15693_SELECT :snprintf(exp, size, "SELECT");break;
277 case ISO15693_RESET_TO_READY :snprintf(exp, size, "RESET_TO_READY");break;
278 case ISO15693_WRITE_AFI :snprintf(exp, size, "WRITE_AFI");break;
279 case ISO15693_LOCK_AFI :snprintf(exp, size, "LOCK_AFI");break;
280 case ISO15693_WRITE_DSFID :snprintf(exp, size, "WRITE_DSFID");break;
281 case ISO15693_LOCK_DSFID :snprintf(exp, size, "LOCK_DSFID");break;
282 case ISO15693_GET_SYSTEM_INFO :snprintf(exp, size, "GET_SYSTEM_INFO");break;
283 case ISO15693_READ_MULTI_SECSTATUS :snprintf(exp, size, "READ_MULTI_SECSTATUS");break;
284 default: snprintf(exp,size,"?"); break;
285 }
286 }
287 }
288 /**
289 * @brief iclass_CRC_Ok Checks CRC in command or response
290 * @param isResponse
291 * @param data
292 * @param len
293 * @return 0 : CRC-command, CRC not ok
294 * 1 : CRC-command, CRC ok
295 * 2 : Not crc-command
296 */
297 uint8_t iclass_CRC_Ok(bool isResponse, uint8_t* data, uint8_t len)
298 {
299 if(len < 4) return 2;//CRC commands (and responses) are all at least 4 bytes
300
301 uint8_t b1, b2;
302
303 if(!isResponse)//Commands to tag
304 {
305 /**
306 These commands should have CRC. Total length leftmost
307 4 READ
308 4 READ4
309 12 UPDATE - unsecured, ends with CRC16
310 14 UPDATE - secured, ends with signature instead
311 4 PAGESEL
312 **/
313 if(len == 4 || len == 12)//Covers three of them
314 {
315 //Don't include the command byte
316 ComputeCrc14443(CRC_ICLASS, (data+1), len-3, &b1, &b2);
317 return b1 == data[len -2] && b2 == data[len-1];
318 }
319 return 2;
320 }else{
321 /**
322 These tag responses should have CRC. Total length leftmost
323
324 10 READ data[8] crc[2]
325 34 READ4 data[32]crc[2]
326 10 UPDATE data[8] crc[2]
327 10 SELECT csn[8] crc[2]
328 10 IDENTIFY asnb[8] crc[2]
329 10 PAGESEL block1[8] crc[2]
330 10 DETECT csn[8] crc[2]
331
332 These should not
333
334 4 CHECK chip_response[4]
335 8 READCHECK data[8]
336 1 ACTALL sof[1]
337 1 ACT sof[1]
338
339 In conclusion, without looking at the command; any response
340 of length 10 or 34 should have CRC
341 **/
342 if(len != 10 && len != 34) return true;
343
344 ComputeCrc14443(CRC_ICLASS, data, len-2, &b1, &b2);
345 return b1 == data[len -2] && b2 == data[len-1];
346 }
347 }
348
349 uint16_t printTraceLine(uint16_t tracepos, uint8_t* trace, bool iclass, bool showWaitCycles)
350 {
351 bool isResponse;
352 uint16_t duration, data_len,parity_len;
353
354 uint32_t timestamp, first_timestamp, EndOfTransmissionTimestamp;
355 char explanation[30] = {0};
356
357 first_timestamp = *((uint32_t *)(trace));
358 timestamp = *((uint32_t *)(trace + tracepos));
359 // Break and stick with current result if buffer was not completely full
360 if (timestamp == 0x44444444) return TRACE_SIZE;
361
362 tracepos += 4;
363 duration = *((uint16_t *)(trace + tracepos));
364 tracepos += 2;
365 data_len = *((uint16_t *)(trace + tracepos));
366 tracepos += 2;
367
368 if (data_len & 0x8000) {
369 data_len &= 0x7fff;
370 isResponse = true;
371 } else {
372 isResponse = false;
373 }
374 parity_len = (data_len-1)/8 + 1;
375
376 if (tracepos + data_len + parity_len >= TRACE_SIZE) {
377 return TRACE_SIZE;
378 }
379
380 uint8_t *frame = trace + tracepos;
381 tracepos += data_len;
382 uint8_t *parityBytes = trace + tracepos;
383 tracepos += parity_len;
384
385 //--- Draw the data column
386 char line[16][110];
387 for (int j = 0; j < data_len; j++) {
388 int oddparity = 0x01;
389 int k;
390
391 for (k=0 ; k<8 ; k++) {
392 oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
393 }
394
395 uint8_t parityBits = parityBytes[j>>3];
396
397 if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
398 sprintf(line[j/16]+((j%16)*4), "%02x! ", frame[j]);
399 } else {
400 sprintf(line[j/16]+((j%16)*4), "%02x ", frame[j]);
401 }
402 }
403 //--- Draw the CRC column
404 uint8_t crcStatus = 2;
405
406 if (data_len > 2) {
407 uint8_t b1, b2;
408 if(iclass)
409 {
410 //The following commands have crc
411 crcStatus = iclass_CRC_Ok(isResponse, frame, data_len);
412
413 }else{//Iso 14443a
414
415 ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
416
417 if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
418 if(!(isResponse & (data_len < 6)))
419 {
420 crcStatus = 0;
421 }
422 }
423 }
424 }
425 //0 CRC-command, CRC not ok
426 //1 CRC-command, CRC ok
427 //2 Not crc-command
428 char *crc = (crcStatus == 0 ? "!crc" : (crcStatus == 1 ? " ok " : " "));
429
430 EndOfTransmissionTimestamp = timestamp + duration;
431
432 if(!isResponse)
433 {
434 if(iclass)
435 annotateIclass(explanation,sizeof(explanation),frame,data_len);
436 else
437 annotateIso14443a(explanation,sizeof(explanation),frame,data_len);
438 }
439
440 int num_lines = (data_len - 1)/16 + 1;
441 for (int j = 0; j < num_lines; j++) {
442 if (j == 0) {
443 PrintAndLog(" %9d | %9d | %s | %-64s| %s| %s",
444 (timestamp - first_timestamp),
445 (EndOfTransmissionTimestamp - first_timestamp),
446 (isResponse ? "Tag" : "Rdr"),
447 line[j],
448 (j == num_lines-1) ? crc : " ",
449 (j == num_lines-1) ? explanation : "");
450 } else {
451 PrintAndLog(" | | | %-64s| %s| %s",
452 line[j],
453 (j == num_lines-1)?crc:" ",
454 (j == num_lines-1) ? explanation : "");
455 }
456 }
457
458 bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
459
460 if (showWaitCycles && !isResponse && next_isResponse) {
461 uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
462 if (next_timestamp != 0x44444444) {
463 PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
464 (EndOfTransmissionTimestamp - first_timestamp),
465 (next_timestamp - first_timestamp),
466 " ",
467 (next_timestamp - EndOfTransmissionTimestamp));
468 }
469 }
470 return tracepos;
471 }
472
473 int CmdHFList(const char *Cmd)
474 {
475 bool showWaitCycles = false;
476 char type[40] = {0};
477 int tlen = param_getstr(Cmd,0,type);
478 char param = param_getchar(Cmd, 1);
479 bool errors = false;
480 bool iclass = false;
481 //Validate params
482 if(tlen == 0 || (strcmp(type, "iclass") != 0 && strcmp(type,"14a") != 0))
483 {
484 errors = true;
485 }
486 if(param == 'h' || (param !=0 && param != 'f'))
487 {
488 errors = true;
489 }
490
491 if (errors) {
492 PrintAndLog("List protocol data in trace buffer.");
493 PrintAndLog("Usage: hf list [14a|iclass] [f]");
494 PrintAndLog(" 14a - interpret data as iso14443a communications");
495 PrintAndLog(" iclass - interpret data as iclass communications");
496 PrintAndLog(" f - show frame delay times as well");
497 PrintAndLog("");
498 PrintAndLog("example: hf list 14a f");
499 PrintAndLog("example: hf list iclass");
500 return 0;
501 }
502 if(strcmp(type, "iclass") == 0)
503 {
504 iclass = true;
505 }
506
507 if (param == 'f') {
508 showWaitCycles = true;
509 }
510
511
512 uint8_t trace[TRACE_SIZE];
513 uint16_t tracepos = 0;
514 GetFromBigBuf(trace, TRACE_SIZE, 0);
515 WaitForResponse(CMD_ACK, NULL);
516
517 PrintAndLog("Recorded Activity");
518 PrintAndLog("");
519 PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
520 PrintAndLog("iso14443a - All times are in carrier periods (1/13.56Mhz)");
521 PrintAndLog("iClass - Timings are not as accurate");
522 PrintAndLog("");
523 PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC | Annotation |");
524 PrintAndLog("-----------|-----------|-----|-----------------------------------------------------------------|-----|--------------------|");
525
526 while(tracepos < TRACE_SIZE)
527 {
528 tracepos = printTraceLine(tracepos, trace, iclass, showWaitCycles);
529 }
530 return 0;
531 }
532
533
534 static command_t CommandTable[] =
535 {
536 {"help", CmdHelp, 1, "This help"},
537 {"14a", CmdHF14A, 1, "{ ISO14443A RFIDs... }"},
538 {"14b", CmdHF14B, 1, "{ ISO14443B RFIDs... }"},
539 {"15", CmdHF15, 1, "{ ISO15693 RFIDs... }"},
540 {"epa", CmdHFEPA, 1, "{ German Identification Card... }"},
541 {"legic", CmdHFLegic, 0, "{ LEGIC RFIDs... }"},
542 {"iclass", CmdHFiClass, 1, "{ ICLASS RFIDs... }"},
543 {"mf", CmdHFMF, 1, "{ MIFARE RFIDs... }"},
544 {"tune", CmdHFTune, 0, "Continuously measure HF antenna tuning"},
545 {"list", CmdHFList, 1, "List protocol data in trace buffer"},
546 {NULL, NULL, 0, NULL}
547 };
548
549 int CmdHF(const char *Cmd)
550 {
551 CmdsParse(CommandTable, Cmd);
552 return 0;
553 }
554
555 int CmdHelp(const char *Cmd)
556 {
557 CmdsHelp(CommandTable);
558 return 0;
559 }
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