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