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1 //-----------------------------------------------------------------------------
2 //
3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
4 // at your option, any later version. See the LICENSE.txt file for the text of
5 // the license.
6 //-----------------------------------------------------------------------------
7 // Low frequency T55xx commands
8 //-----------------------------------------------------------------------------
9
10 #include <stdio.h>
11 #include <string.h>
12 #include <inttypes.h>
13 #include <time.h>
14 #include "proxmark3.h"
15 #include "ui.h"
16 #include "graph.h"
17 #include "cmdmain.h"
18 #include "cmdparser.h"
19 #include "cmddata.h"
20 #include "cmdlf.h"
21 #include "cmdlft55xx.h"
22 #include "util.h"
23 #include "data.h"
24 #include "lfdemod.h"
25 #include "../common/crc.h"
26 #include "../common/iso14443crc.h"
27 #include "cmdhf14a.h"
28
29 #define CONFIGURATION_BLOCK 0x00
30 #define TRACE_BLOCK 0x01
31
32 // Default configuration
33 t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = FALSE, .offset = 0x00, .block0 = 0x00};
34
35 int usage_t55xx_config(){
36 PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>]");
37 PrintAndLog("Options: ");
38 PrintAndLog(" h This help");
39 PrintAndLog(" b <8|16|32|40|50|64|100|128> Set bitrate");
40 PrintAndLog(" d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NZ|BI|BIa> Set demodulation FSK / ASK / PSK / NZ / Biphase / Biphase A");
41 PrintAndLog(" i [1] Invert data signal, defaults to normal");
42 PrintAndLog(" o [offset] Set offset, where data should start decode in bitstream");
43 PrintAndLog("");
44 PrintAndLog("Examples:");
45 PrintAndLog(" lf t55xx config d FSK - FSK demodulation");
46 PrintAndLog(" lf t55xx config d FSK i 1 - FSK demodulation, inverse data");
47 PrintAndLog(" lf t55xx config d FSK i 1 o 3 - FSK demodulation, inverse data, offset=3,start from position 3 to decode data");
48 PrintAndLog("");
49 return 0;
50 }
51 int usage_t55xx_read(){
52 PrintAndLog("Usage: lf t55xx read <block> <password>");
53 PrintAndLog(" <block>, block number to read. Between 0-7");
54 PrintAndLog(" <password>, OPTIONAL password (8 hex characters)");
55 PrintAndLog("");
56 PrintAndLog("Examples:");
57 PrintAndLog(" lf t55xx read 0 - read data from block 0");
58 PrintAndLog(" lf t55xx read 0 feedbeef - read data from block 0 password feedbeef");
59 PrintAndLog("");
60 return 0;
61 }
62 int usage_t55xx_write(){
63 PrintAndLog("Usage: lf t55xx wr <block> <data> [password]");
64 PrintAndLog(" <block>, block number to read. Between 0-7");
65 PrintAndLog(" <data>, 4 bytes of data to write (8 hex characters)");
66 PrintAndLog(" [password], OPTIONAL password 4bytes (8 hex characters)");
67 PrintAndLog("");
68 PrintAndLog("Examples:");
69 PrintAndLog(" lf t55xx wd 3 11223344 - write 11223344 to block 3");
70 PrintAndLog(" lf t55xx wd 3 11223344 feedbeef - write 11223344 to block 3 password feedbeef");
71 PrintAndLog("");
72 return 0;
73 }
74 int usage_t55xx_trace() {
75 PrintAndLog("Usage: lf t55xx trace [1]");
76 PrintAndLog(" [graph buffer data], if set, use Graphbuffer otherwise read data from tag.");
77 PrintAndLog("");
78 PrintAndLog("Examples:");
79 PrintAndLog(" lf t55xx trace");
80 PrintAndLog(" lf t55xx trace 1");
81 PrintAndLog("");
82 return 0;
83 }
84 int usage_t55xx_info() {
85 PrintAndLog("Usage: lf t55xx info [1]");
86 PrintAndLog(" [graph buffer data], if set, use Graphbuffer otherwise read data from tag.");
87 PrintAndLog("");
88 PrintAndLog("Examples:");
89 PrintAndLog(" lf t55xx info");
90 PrintAndLog(" lf t55xx info 1");
91 PrintAndLog("");
92 return 0;
93 }
94 int usage_t55xx_dump(){
95 PrintAndLog("Usage: lf t55xx dump <password>");
96 PrintAndLog(" <password>, OPTIONAL password 4bytes (8 hex symbols)");
97 PrintAndLog("");
98 PrintAndLog("Examples:");
99 PrintAndLog(" lf t55xx dump");
100 PrintAndLog(" lf t55xx dump feedbeef");
101 PrintAndLog("");
102 return 0;
103 }
104 int usage_t55xx_detect(){
105 PrintAndLog("Usage: lf t55xx detect");
106 PrintAndLog("");
107 PrintAndLog("Examples:");
108 PrintAndLog(" lf t55xx detect");
109 PrintAndLog(" lf t55xx detect 1");
110 PrintAndLog("");
111 return 0;
112 }
113
114 static int CmdHelp(const char *Cmd);
115
116 int CmdT55xxSetConfig(const char *Cmd) {
117
118 uint8_t offset = 0;
119 bool errors = FALSE;
120 uint8_t cmdp = 0;
121 char modulation[5] = {0x00};
122 char tmp = 0x00;
123 uint8_t bitRate = 0;
124 uint8_t rates[9] = {8,16,32,40,50,64,100,128,0};
125 while(param_getchar(Cmd, cmdp) != 0x00 && !errors)
126 {
127 tmp = param_getchar(Cmd, cmdp);
128 switch(tmp)
129 {
130 case 'h':
131 case 'H':
132 return usage_t55xx_config();
133 case 'b':
134 errors |= param_getdec(Cmd, cmdp+1, &bitRate);
135 if ( !errors){
136 uint8_t i = 0;
137 for (; i < 9; i++){
138 if (rates[i]==bitRate) {
139 config.bitrate = i;
140 break;
141 }
142 }
143 if (i==9) errors = TRUE;
144 }
145 cmdp+=2;
146 break;
147 case 'd':
148 param_getstr(Cmd, cmdp+1, modulation);
149 cmdp += 2;
150
151 if ( strcmp(modulation, "FSK" ) == 0) {
152 config.modulation = DEMOD_FSK;
153 } else if ( strcmp(modulation, "FSK1" ) == 0) {
154 config.modulation = DEMOD_FSK1;
155 config.inverted=1;
156 } else if ( strcmp(modulation, "FSK1a" ) == 0) {
157 config.modulation = DEMOD_FSK1a;
158 config.inverted=0;
159 } else if ( strcmp(modulation, "FSK2" ) == 0) {
160 config.modulation = DEMOD_FSK2;
161 config.inverted=0;
162 } else if ( strcmp(modulation, "FSK2a" ) == 0) {
163 config.modulation = DEMOD_FSK2a;
164 config.inverted=1;
165 } else if ( strcmp(modulation, "ASK" ) == 0) {
166 config.modulation = DEMOD_ASK;
167 } else if ( strcmp(modulation, "NRZ" ) == 0) {
168 config.modulation = DEMOD_NRZ;
169 } else if ( strcmp(modulation, "PSK1" ) == 0) {
170 config.modulation = DEMOD_PSK1;
171 } else if ( strcmp(modulation, "PSK2" ) == 0) {
172 config.modulation = DEMOD_PSK2;
173 } else if ( strcmp(modulation, "PSK3" ) == 0) {
174 config.modulation = DEMOD_PSK3;
175 } else if ( strcmp(modulation, "BIa" ) == 0) {
176 config.modulation = DEMOD_BIa;
177 config.inverted=1;
178 } else if ( strcmp(modulation, "BI" ) == 0) {
179 config.modulation = DEMOD_BI;
180 config.inverted=0;
181 } else {
182 PrintAndLog("Unknown modulation '%s'", modulation);
183 errors = TRUE;
184 }
185 break;
186 case 'i':
187 config.inverted = param_getchar(Cmd,cmdp+1) == '1';
188 cmdp+=2;
189 break;
190 case 'o':
191 errors |= param_getdec(Cmd, cmdp+1, &offset);
192 if ( !errors )
193 config.offset = offset;
194 cmdp+=2;
195 break;
196 default:
197 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
198 errors = TRUE;
199 break;
200 }
201 }
202
203 // No args
204 if (cmdp == 0) {
205 printConfiguration( config );
206 return 0;
207 }
208 //Validations
209 if (errors)
210 return usage_t55xx_config();
211
212 config.block0 = 0;
213 printConfiguration ( config );
214 return 0;
215 }
216
217 int CmdT55xxReadBlock(const char *Cmd) {
218 int block = -1;
219 int password = 0xFFFFFFFF; //default to blank Block 7
220
221 char cmdp = param_getchar(Cmd, 0);
222 if (cmdp == 'h' || cmdp == 'H')
223 return usage_t55xx_read();
224
225 int res = sscanf(Cmd, "%d %x", &block, &password);
226
227 if ( res < 1 || res > 2 )
228 return usage_t55xx_read();
229
230
231 if ((block < 0) | (block > 7)) {
232 PrintAndLog("Block must be between 0 and 7");
233 return 1;
234 }
235
236 UsbCommand c = {CMD_T55XX_READ_BLOCK, {0, block, 0}};
237 c.d.asBytes[0] = 0x0;
238
239 //Password mode
240 if ( res == 2 ) {
241 c.arg[2] = password;
242 c.d.asBytes[0] = 0x1;
243 }
244
245 SendCommand(&c);
246 if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
247 PrintAndLog("command execution time out");
248 return 2;
249 }
250
251 uint8_t got[12000];
252 GetFromBigBuf(got,sizeof(got),0);
253 WaitForResponse(CMD_ACK,NULL);
254 setGraphBuf(got, 12000);
255 DemodBufferLen=0;
256 if (!DecodeT55xxBlock()) return 3;
257 char blk[10]={0};
258 sprintf(blk,"%d", block);
259 printT55xxBlock(blk);
260 return 0;
261 }
262
263 bool DecodeT55xxBlock(){
264
265 char buf[30] = {0x00};
266 char *cmdStr = buf;
267 int ans = 0;
268 uint8_t bitRate[8] = {8,16,32,40,50,64,100,128};
269 DemodBufferLen = 0x00;
270
271 //trim 1/2 a clock from beginning
272 snprintf(cmdStr, sizeof(buf),"%d", bitRate[config.bitrate]/2 );
273 CmdLtrim(cmdStr);
274
275 switch( config.modulation ){
276 case DEMOD_FSK:
277 snprintf(cmdStr, sizeof(buf),"%d %d", bitRate[config.bitrate], config.inverted );
278 ans = FSKrawDemod(cmdStr, FALSE);
279 break;
280 case DEMOD_FSK1:
281 case DEMOD_FSK1a:
282 snprintf(cmdStr, sizeof(buf),"%d %d 8 5", bitRate[config.bitrate], config.inverted );
283 ans = FSKrawDemod(cmdStr, FALSE);
284 break;
285 case DEMOD_FSK2:
286 case DEMOD_FSK2a:
287 snprintf(cmdStr, sizeof(buf),"%d %d 10 8", bitRate[config.bitrate], config.inverted );
288 ans = FSKrawDemod(cmdStr, FALSE);
289 break;
290 case DEMOD_ASK:
291 snprintf(cmdStr, sizeof(buf),"%d %d 0", bitRate[config.bitrate], config.inverted );
292 ans = ASKDemod(cmdStr, FALSE, FALSE, 1);
293 break;
294 case DEMOD_PSK1:
295 snprintf(cmdStr, sizeof(buf),"%d %d 0", bitRate[config.bitrate], config.inverted );
296 ans = PSKDemod(cmdStr, FALSE);
297 break;
298 case DEMOD_PSK2: //inverted won't affect this
299 case DEMOD_PSK3: //not fully implemented
300 snprintf(cmdStr, sizeof(buf),"%d 0 1", bitRate[config.bitrate] );
301 ans = PSKDemod(cmdStr, FALSE);
302 psk1TOpsk2(DemodBuffer, DemodBufferLen);
303 break;
304 case DEMOD_NRZ:
305 snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
306 ans = NRZrawDemod(cmdStr, FALSE);
307 break;
308 case DEMOD_BI:
309 case DEMOD_BIa:
310 snprintf(cmdStr, sizeof(buf),"0 %d %d 0", bitRate[config.bitrate], config.inverted );
311 ans = ASKbiphaseDemod(cmdStr, FALSE);
312 break;
313 default:
314 return FALSE;
315 }
316 return (bool) ans;
317 }
318
319 int CmdT55xxDetect(const char *Cmd){
320
321 char cmdp = param_getchar(Cmd, 0);
322 if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
323 return usage_t55xx_detect();
324
325 if (strlen(Cmd)==0)
326 AquireData( CONFIGURATION_BLOCK );
327
328 if ( !tryDetectModulation() )
329 PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
330
331 return 0;
332 }
333
334 // detect configuration?
335 bool tryDetectModulation(){
336 char cmdStr[8] = {0};
337 uint8_t hits = 0;
338 t55xx_conf_block_t tests[15];
339 int bitRate=0;
340 if (GetFskClock("", FALSE, FALSE)){
341 uint8_t fc1 = 0, fc2 = 0, clk=0;
342 fskClocks(&fc1, &fc2, &clk, FALSE);
343 sprintf(cmdStr,"%d", clk/2);
344 CmdLtrim(cmdStr);
345 if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate)){
346 tests[hits].modulation = DEMOD_FSK;
347 if (fc1==8 && fc2 == 5)
348 tests[hits].modulation = DEMOD_FSK1a;
349 else if (fc1==10 && fc2 == 8)
350 tests[hits].modulation = DEMOD_FSK2;
351 tests[hits].bitrate = bitRate;
352 tests[hits].inverted = FALSE;
353 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
354 ++hits;
355 }
356 if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate)) {
357 tests[hits].modulation = DEMOD_FSK;
358 if (fc1 == 8 && fc2 == 5)
359 tests[hits].modulation = DEMOD_FSK1;
360 else if (fc1 == 10 && fc2 == 8)
361 tests[hits].modulation = DEMOD_FSK2a;
362
363 tests[hits].bitrate = bitRate;
364 tests[hits].inverted = TRUE;
365 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
366 ++hits;
367 }
368 } else {
369 if ( ASKDemod("0 0 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate)) {
370 tests[hits].modulation = DEMOD_ASK;
371 tests[hits].bitrate = bitRate;
372 tests[hits].inverted = FALSE;
373 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
374 ++hits;
375 }
376
377 if ( ASKDemod("0 1 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate)) {
378 tests[hits].modulation = DEMOD_ASK;
379 tests[hits].bitrate = bitRate;
380 tests[hits].inverted = TRUE;
381 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
382 ++hits;
383 }
384
385 if ( NRZrawDemod("0 0 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate)) {
386 tests[hits].modulation = DEMOD_NRZ;
387 tests[hits].bitrate = bitRate;
388 tests[hits].inverted = FALSE;
389 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
390 ++hits;
391 }
392
393 if ( NRZrawDemod("0 1 1", FALSE) && test(DEMOD_NRZ, &tests[hits].offset, &bitRate)) {
394 tests[hits].modulation = DEMOD_NRZ;
395 tests[hits].bitrate = bitRate;
396 tests[hits].inverted = TRUE;
397 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
398 ++hits;
399 }
400
401 if ( PSKDemod("0 0 1", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate)) {
402 tests[hits].modulation = DEMOD_PSK1;
403 tests[hits].bitrate = bitRate;
404 tests[hits].inverted = FALSE;
405 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
406 ++hits;
407 }
408
409 if ( PSKDemod("0 1 1", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate)) {
410 tests[hits].modulation = DEMOD_PSK1;
411 tests[hits].bitrate = bitRate;
412 tests[hits].inverted = TRUE;
413 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
414 ++hits;
415 }
416
417 // PSK2 - needs a call to psk1TOpsk2.
418 if ( PSKDemod("0 0 1", FALSE)) {
419 psk1TOpsk2(DemodBuffer, DemodBufferLen);
420 if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate)){
421 tests[hits].modulation = DEMOD_PSK2;
422 tests[hits].bitrate = bitRate;
423 tests[hits].inverted = FALSE;
424 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
425 ++hits;
426 }
427 } // inverse waves does not affect this demod
428
429 // PSK3 - needs a call to psk1TOpsk2.
430 if ( PSKDemod("0 0 1", FALSE)) {
431 psk1TOpsk2(DemodBuffer, DemodBufferLen);
432 if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate)){
433 tests[hits].modulation = DEMOD_PSK3;
434 tests[hits].bitrate = bitRate;
435 tests[hits].inverted = FALSE;
436 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
437 ++hits;
438 }
439 } // inverse waves does not affect this demod
440
441 if ( ASKbiphaseDemod("0 0 0 1", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate) ) {
442 tests[hits].modulation = DEMOD_BI;
443 tests[hits].bitrate = bitRate;
444 tests[hits].inverted = FALSE;
445 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
446 ++hits;
447 }
448 if ( ASKbiphaseDemod("0 0 1 1", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate) ) {
449 tests[hits].modulation = DEMOD_BIa;
450 tests[hits].bitrate = bitRate;
451 tests[hits].inverted = TRUE;
452 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
453 ++hits;
454 }
455 }
456 if ( hits == 1) {
457 config.modulation = tests[0].modulation;
458 config.bitrate = tests[0].bitrate;
459 config.inverted = tests[0].inverted;
460 config.offset = tests[0].offset;
461 config.block0 = tests[0].block0;
462 printConfiguration( config );
463 return TRUE;
464 }
465
466 if ( hits > 1) {
467 PrintAndLog("Found [%d] possible matches for modulation.",hits);
468 for(int i=0; i<hits; ++i){
469 PrintAndLog("--[%d]---------------", i+1);
470 printConfiguration( tests[i] );
471 }
472 }
473 return FALSE;
474 }
475
476 bool testModulation(uint8_t mode, uint8_t modread){
477 switch( mode ){
478 case DEMOD_FSK:
479 if (modread > 3 && modread < 8) return TRUE;
480 break;
481 case DEMOD_ASK:
482 if (modread == DEMOD_ASK) return TRUE;
483 break;
484 case DEMOD_PSK1:
485 if (modread == DEMOD_PSK1) return TRUE;
486 break;
487 case DEMOD_PSK2:
488 if (modread == DEMOD_PSK2) return TRUE;
489 break;
490 case DEMOD_PSK3:
491 if (modread == DEMOD_PSK3) return TRUE;
492 break;
493 case DEMOD_NRZ:
494 if (modread == DEMOD_NRZ) return TRUE;
495 break;
496 case DEMOD_BI:
497 if (modread == DEMOD_BI) return TRUE;
498 break;
499 case DEMOD_BIa:
500 if (modread == DEMOD_BIa) return TRUE;
501 break;
502 default:
503 return FALSE;
504 }
505 return FALSE;
506 }
507
508 bool testBitRate(uint8_t readRate, uint8_t mod){
509 uint8_t expected[8] = {8, 16, 32, 40, 50, 64, 100, 128};
510 uint8_t detRate = 0;
511 switch( mod ){
512 case DEMOD_FSK:
513 case DEMOD_FSK1:
514 case DEMOD_FSK1a:
515 case DEMOD_FSK2:
516 case DEMOD_FSK2a:
517 detRate = GetFskClock("",FALSE, FALSE);
518 if (expected[readRate] == detRate)
519 return TRUE;
520 break;
521 case DEMOD_ASK:
522 case DEMOD_BI:
523 case DEMOD_BIa:
524 detRate = GetAskClock("",FALSE, FALSE);
525 if (expected[readRate] == detRate)
526 return TRUE;
527 break;
528 case DEMOD_PSK1:
529 case DEMOD_PSK2:
530 case DEMOD_PSK3:
531 detRate = GetPskClock("",FALSE, FALSE);
532 if (expected[readRate] == detRate)
533 return TRUE;
534 break;
535 case DEMOD_NRZ:
536 detRate = GetNrzClock("",FALSE, FALSE);
537 if (expected[readRate] == detRate)
538 return TRUE;
539 break;
540 default:
541 return FALSE;
542 }
543 return FALSE;
544 }
545
546 bool test(uint8_t mode, uint8_t *offset, int *fndBitRate){
547
548 if ( DemodBufferLen < 64 ) return FALSE;
549 uint8_t si = 0;
550 for (uint8_t idx = 0; idx < 64; idx++){
551 si = idx;
552 if ( PackBits(si, 32, DemodBuffer) == 0x00 ) continue;
553
554 uint8_t safer = PackBits(si, 4, DemodBuffer); si += 4; //master key
555 uint8_t resv = PackBits(si, 4, DemodBuffer); si += 4; //was 7 & +=7+3 //should be only 4 bits if extended mode
556 // 2nibble must be zeroed.
557 // moved test to here, since this gets most faults first.
558 if ( resv > 0x00) continue;
559
560 uint8_t xtRate = PackBits(si, 3, DemodBuffer); si += 3; //extended mode part of rate
561 int bitRate = PackBits(si, 3, DemodBuffer); si += 3; //bit rate
562 if (bitRate > 7) continue;
563 uint8_t extend = PackBits(si, 1, DemodBuffer); si += 1; //bit 15 extended mode
564 uint8_t modread = PackBits(si, 5, DemodBuffer); si += 5+2+1;
565 //uint8_t pskcr = PackBits(si, 2, DemodBuffer); si += 2+1; //could check psk cr
566 uint8_t nml01 = PackBits(si, 1, DemodBuffer); si += 1+5; //bit 24, 30, 31 could be tested for 0 if not extended mode
567 uint8_t nml02 = PackBits(si, 2, DemodBuffer); si += 2;
568
569 //if extended mode
570 bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? TRUE : FALSE;
571
572 if (!extMode){
573 if (nml01 || nml02 || xtRate) continue;
574 }
575 //test modulation
576 if (!testModulation(mode, modread)) continue;
577 if (!testBitRate(bitRate, mode)) continue;
578 *fndBitRate = bitRate;
579 *offset = idx;
580 return TRUE;
581 }
582 return FALSE;
583 }
584
585 void printT55xxBlock(const char *blockNum){
586
587 uint8_t i = config.offset;
588 uint8_t endpos = 32 + i;
589 uint32_t blockData = 0;
590 uint8_t bits[64] = {0x00};
591
592 if ( !DemodBufferLen) return;
593
594 if ( endpos > DemodBufferLen){
595 PrintAndLog("The configured offset %d is too big. Possible offset: %d)", i, DemodBufferLen-32);
596 return;
597 }
598
599 for (; i < endpos; ++i)
600 bits[i - config.offset]=DemodBuffer[i];
601
602 blockData = PackBits(0, 32, bits);
603 PrintAndLog("[%s] 0x%08X %s", blockNum, blockData, sprint_bin(bits,32));
604 }
605
606 int special(const char *Cmd) {
607 uint32_t blockData = 0;
608 uint8_t bits[32] = {0x00};
609
610 PrintAndLog("[OFFSET] [DATA] [BINARY]");
611 PrintAndLog("----------------------------------------------------");
612 int i,j = 0;
613 for (; j < 64; ++j){
614
615 for (i = 0; i < 32; ++i)
616 bits[i]=DemodBuffer[j+i];
617
618 blockData = PackBits(0, 32, bits);
619
620 PrintAndLog("[%02d] 0x%08X %s",j , blockData, sprint_bin(bits,32));
621 }
622 return 0;
623 }
624
625 void printConfiguration( t55xx_conf_block_t b){
626 PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
627 PrintAndLog("Bit Rate : %s", GetBitRateStr(b.bitrate) );
628 PrintAndLog("Inverted : %s", (b.inverted) ? "Yes" : "No" );
629 PrintAndLog("Offset : %d", b.offset);
630 PrintAndLog("Block0 : 0x%08X", b.block0);
631 PrintAndLog("");
632 }
633
634 int CmdT55xxWriteBlock(const char *Cmd)
635 {
636 int block = 8; //default to invalid block
637 int data = 0xFFFFFFFF; //default to blank Block
638 int password = 0xFFFFFFFF; //default to blank Block 7
639
640 char cmdp = param_getchar(Cmd, 0);
641 if (cmdp == 'h' || cmdp == 'H') {
642 usage_t55xx_write();
643 return 0;
644 }
645
646 int res = sscanf(Cmd, "%d %x %x",&block, &data, &password);
647
648 if ( res < 2 || res > 3) {
649 usage_t55xx_write();
650 return 1;
651 }
652
653 if (block > 7) {
654 PrintAndLog("Block number must be between 0 and 7");
655 return 1;
656 }
657
658 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {data, block, 0}};
659 c.d.asBytes[0] = 0x0;
660
661 PrintAndLog("Writing to block: %d data : 0x%08X", block, data);
662
663 //Password mode
664 if (res == 3) {
665 c.arg[2] = password;
666 c.d.asBytes[0] = 0x1;
667 PrintAndLog("pwd : 0x%08X", password);
668 }
669 SendCommand(&c);
670 return 0;
671 }
672
673 int CmdT55xxReadTrace(const char *Cmd)
674 {
675 char cmdp = param_getchar(Cmd, 0);
676
677 if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
678 return usage_t55xx_trace();
679
680 if (strlen(Cmd)==0)
681 AquireData( TRACE_BLOCK );
682
683 if (!DecodeT55xxBlock()) return 1;
684
685 if ( !DemodBufferLen) return 1;
686
687 RepaintGraphWindow();
688 uint8_t repeat = 0;
689 if (config.offset > 5)
690 repeat = 32;
691 uint8_t si = config.offset+repeat;
692 uint32_t bl0 = PackBits(si, 32, DemodBuffer);
693 uint32_t bl1 = PackBits(si+32, 32, DemodBuffer);
694
695 uint32_t acl = PackBits(si, 8, DemodBuffer); si += 8;
696 uint32_t mfc = PackBits(si, 8, DemodBuffer); si += 8;
697 uint32_t cid = PackBits(si, 5, DemodBuffer); si += 5;
698 uint32_t icr = PackBits(si, 3, DemodBuffer); si += 3;
699 uint32_t year = PackBits(si, 4, DemodBuffer); si += 4;
700 uint32_t quarter = PackBits(si, 2, DemodBuffer); si += 2;
701 uint32_t lotid = PackBits(si, 14, DemodBuffer); si += 14;
702 uint32_t wafer = PackBits(si, 5, DemodBuffer); si += 5;
703 uint32_t dw = PackBits(si, 15, DemodBuffer);
704
705 time_t t = time(NULL);
706 struct tm tm = *localtime(&t);
707 if ( year > tm.tm_year-110)
708 year += 2000;
709 else
710 year += 2010;
711
712 if ( acl != 0xE0 ) {
713 PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
714 return 1;
715 }
716
717 PrintAndLog("");
718 PrintAndLog("-- T55xx Trace Information ----------------------------------");
719 PrintAndLog("-------------------------------------------------------------");
720 PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1) : 0x%02X (%d)", acl, acl);
721 PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6) : 0x%02X (%d) - %s", mfc, mfc, getTagInfo(mfc));
722 PrintAndLog(" CID : 0x%02X (%d) - %s", cid, cid, GetModelStrFromCID(cid));
723 PrintAndLog(" ICR IC Revision : %d",icr );
724 PrintAndLog(" Manufactured");
725 PrintAndLog(" Year/Quarter : %d/%d",year, quarter);
726 PrintAndLog(" Lot ID : %d", lotid );
727 PrintAndLog(" Wafer number : %d", wafer);
728 PrintAndLog(" Die Number : %d", dw);
729 PrintAndLog("-------------------------------------------------------------");
730 PrintAndLog(" Raw Data - Page 1");
731 PrintAndLog(" Block 0 : 0x%08X %s", bl0, sprint_bin(DemodBuffer+config.offset+repeat,32) );
732 PrintAndLog(" Block 1 : 0x%08X %s", bl1, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
733 PrintAndLog("-------------------------------------------------------------");
734
735 /*
736 TRACE - BLOCK O
737 Bits Definition HEX
738 1-8 ACL Allocation class (ISO/IEC 15963-1) 0xE0
739 9-16 MFC Manufacturer ID (ISO/IEC 7816-6) 0x15 Atmel Corporation
740 17-21 CID 0x1 = Atmel ATA5577M1 0x2 = Atmel ATA5577M2
741 22-24 ICR IC revision
742 25-28 YEAR (BCD encoded) 9 (= 2009)
743 29-30 QUARTER 1,2,3,4
744 31-32 LOT ID
745
746 TRACE - BLOCK 1
747 1-12 LOT ID
748 13-17 Wafer number
749 18-32 DW, die number sequential
750 */
751
752 return 0;
753 }
754
755 int CmdT55xxInfo(const char *Cmd){
756 /*
757 Page 0 Block 0 Configuration data.
758 Normal mode
759 Extended mode
760 */
761 char cmdp = param_getchar(Cmd, 0);
762
763 if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H')
764 return usage_t55xx_info();
765
766 if (strlen(Cmd)==0)
767 AquireData( CONFIGURATION_BLOCK );
768
769 if (!DecodeT55xxBlock()) return 1;
770
771 if ( DemodBufferLen < 32) return 1;
772
773 uint8_t si = config.offset;
774 uint32_t bl0 = PackBits(si, 32, DemodBuffer);
775
776 uint32_t safer = PackBits(si, 4, DemodBuffer); si += 4;
777 uint32_t resv = PackBits(si, 7, DemodBuffer); si += 7;
778 uint32_t dbr = PackBits(si, 3, DemodBuffer); si += 3;
779 uint32_t extend = PackBits(si, 1, DemodBuffer); si += 1;
780 uint32_t datamod = PackBits(si, 5, DemodBuffer); si += 5;
781 uint32_t pskcf = PackBits(si, 2, DemodBuffer); si += 2;
782 uint32_t aor = PackBits(si, 1, DemodBuffer); si += 1;
783 uint32_t otp = PackBits(si, 1, DemodBuffer); si += 1;
784 uint32_t maxblk = PackBits(si, 3, DemodBuffer); si += 3;
785 uint32_t pwd = PackBits(si, 1, DemodBuffer); si += 1;
786 uint32_t sst = PackBits(si, 1, DemodBuffer); si += 1;
787 uint32_t fw = PackBits(si, 1, DemodBuffer); si += 1;
788 uint32_t inv = PackBits(si, 1, DemodBuffer); si += 1;
789 uint32_t por = PackBits(si, 1, DemodBuffer); si += 1;
790
791 PrintAndLog("");
792 PrintAndLog("-- T55xx Configuration & Tag Information --------------------");
793 PrintAndLog("-------------------------------------------------------------");
794 PrintAndLog(" Safer key : %s", GetSaferStr(safer));
795 PrintAndLog(" reserved : %d", resv);
796 PrintAndLog(" Data bit rate : %s", GetBitRateStr(dbr));
797 PrintAndLog(" eXtended mode : %s", (extend) ? "Yes - Warning":"No");
798 PrintAndLog(" Modulation : %s", GetModulationStr(datamod));
799 PrintAndLog(" PSK clock frequency : %d", pskcf);
800 PrintAndLog(" AOR - Answer on Request : %s", (aor) ? "Yes":"No");
801 PrintAndLog(" OTP - One Time Pad : %s", (otp) ? "Yes - Warning":"No" );
802 PrintAndLog(" Max block : %d", maxblk);
803 PrintAndLog(" Password mode : %s", (pwd) ? "Yes":"No");
804 PrintAndLog(" Sequence Start Terminator : %s", (sst) ? "Yes":"No");
805 PrintAndLog(" Fast Write : %s", (fw) ? "Yes":"No");
806 PrintAndLog(" Inverse data : %s", (inv) ? "Yes":"No");
807 PrintAndLog(" POR-Delay : %s", (por) ? "Yes":"No");
808 PrintAndLog("-------------------------------------------------------------");
809 PrintAndLog(" Raw Data - Page 0");
810 PrintAndLog(" Block 0 : 0x%08X %s", bl0, sprint_bin(DemodBuffer+config.offset,32) );
811 PrintAndLog("-------------------------------------------------------------");
812
813 return 0;
814 }
815
816 int CmdT55xxDump(const char *Cmd){
817
818 char s[20] = {0x00};
819 uint8_t pwd[4] = {0x00};
820
821 char cmdp = param_getchar(Cmd, 0);
822 if ( cmdp == 'h' || cmdp == 'H') {
823 usage_t55xx_dump();
824 return 0;
825 }
826
827 bool hasPwd = ( strlen(Cmd) > 0);
828 if ( hasPwd ){
829 if (param_gethex(Cmd, 0, pwd, 8)) {
830 PrintAndLog("password must include 8 HEX symbols");
831 return 1;
832 }
833 }
834
835 for ( int i = 0; i <8; ++i){
836 memset(s,0,sizeof(s));
837 if ( hasPwd ) {
838 sprintf(s,"%d %02x%02x%02x%02x", i, pwd[0],pwd[1],pwd[2],pwd[3]);
839 } else {
840 sprintf(s,"%d", i);
841 }
842 CmdT55xxReadBlock(s);
843 }
844 return 0;
845 }
846
847 int AquireData( uint8_t block ){
848
849 UsbCommand c;
850
851 if ( block == CONFIGURATION_BLOCK )
852 c.cmd = CMD_T55XX_READ_BLOCK;
853 else if (block == TRACE_BLOCK )
854 c.cmd = CMD_T55XX_READ_TRACE;
855
856 c.arg[0] = 0x00;
857 c.arg[1] = 0x00;
858 c.arg[2] = 0x00;
859 c.d.asBytes[0] = 0x0;
860
861 //Password mode
862 // if ( res == 2 ) {
863 // c.arg[2] = password;
864 // c.d.asBytes[0] = 0x1;
865 // }
866
867 SendCommand(&c);
868 if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
869 PrintAndLog("command execution time out");
870 return 1;
871 }
872
873 uint8_t got[12000];
874 GetFromBigBuf(got,sizeof(got),0);
875 WaitForResponse(CMD_ACK,NULL);
876 setGraphBuf(got, 12000);
877 return 0;
878 }
879
880 char * GetBitRateStr(uint32_t id){
881 static char buf[25];
882
883 char *retStr = buf;
884 switch (id){
885 case 0:
886 snprintf(retStr,sizeof(buf),"%d - RF/8",id);
887 break;
888 case 1:
889 snprintf(retStr,sizeof(buf),"%d - RF/16",id);
890 break;
891 case 2:
892 snprintf(retStr,sizeof(buf),"%d - RF/32",id);
893 break;
894 case 3:
895 snprintf(retStr,sizeof(buf),"%d - RF/40",id);
896 break;
897 case 4:
898 snprintf(retStr,sizeof(buf),"%d - RF/50",id);
899 break;
900 case 5:
901 snprintf(retStr,sizeof(buf),"%d - RF/64",id);
902 break;
903 case 6:
904 snprintf(retStr,sizeof(buf),"%d - RF/100",id);
905 break;
906 case 7:
907 snprintf(retStr,sizeof(buf),"%d - RF/128",id);
908 break;
909 default:
910 snprintf(retStr,sizeof(buf),"%d - (Unknown)",id);
911 break;
912 }
913
914 return buf;
915 }
916
917 char * GetSaferStr(uint32_t id){
918 static char buf[40];
919 char *retStr = buf;
920
921 snprintf(retStr,sizeof(buf),"%d",id);
922 if (id == 6) {
923 snprintf(retStr,sizeof(buf),"%d - passwd",id);
924 }
925 if (id == 9 ){
926 snprintf(retStr,sizeof(buf),"%d - testmode",id);
927 }
928
929 return buf;
930 }
931
932 char * GetModulationStr( uint32_t id){
933 static char buf[60];
934 char *retStr = buf;
935
936 switch (id){
937 case 0:
938 snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id);
939 break;
940 case 1:
941 snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id);
942 break;
943 case 2:
944 snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id);
945 break;
946 case 3:
947 snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id);
948 break;
949 case 4:
950 snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8 RF/5",id);
951 break;
952 case 5:
953 snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8 RF/10",id);
954 break;
955 case 6:
956 snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5 RF/8",id);
957 break;
958 case 7:
959 snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10 RF/8",id);
960 break;
961 case 8:
962 snprintf(retStr,sizeof(buf),"%d - Manchester",id);
963 break;
964 case 16:
965 snprintf(retStr,sizeof(buf),"%d - Biphase",id);
966 break;
967 case 0x18:
968 snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id);
969 break;
970 case 17:
971 snprintf(retStr,sizeof(buf),"%d - Reserved",id);
972 break;
973 default:
974 snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id);
975 break;
976 }
977 return buf;
978 }
979
980 char * GetModelStrFromCID(uint32_t cid){
981
982 static char buf[10];
983 char *retStr = buf;
984
985 if (cid == 1) snprintf(retStr, sizeof(buf),"ATA5577M1");
986 if (cid == 2) snprintf(retStr, sizeof(buf),"ATA5577M2");
987 return buf;
988 }
989
990 char * GetSelectedModulationStr( uint8_t id){
991
992 static char buf[20];
993 char *retStr = buf;
994
995 switch (id){
996 case DEMOD_FSK:
997 snprintf(retStr,sizeof(buf),"FSK");
998 break;
999 case DEMOD_FSK1:
1000 snprintf(retStr,sizeof(buf),"FSK1");
1001 break;
1002 case DEMOD_FSK1a:
1003 snprintf(retStr,sizeof(buf),"FSK1a");
1004 break;
1005 case DEMOD_FSK2:
1006 snprintf(retStr,sizeof(buf),"FSK2");
1007 break;
1008 case DEMOD_FSK2a:
1009 snprintf(retStr,sizeof(buf),"FSK2a");
1010 break;
1011 case DEMOD_ASK:
1012 snprintf(retStr,sizeof(buf),"ASK");
1013 break;
1014 case DEMOD_NRZ:
1015 snprintf(retStr,sizeof(buf),"DIRECT/NRZ");
1016 break;
1017 case DEMOD_PSK1:
1018 snprintf(retStr,sizeof(buf),"PSK1");
1019 break;
1020 case DEMOD_PSK2:
1021 snprintf(retStr,sizeof(buf),"PSK2");
1022 break;
1023 case DEMOD_PSK3:
1024 snprintf(retStr,sizeof(buf),"PSK3");
1025 break;
1026 case DEMOD_BI:
1027 snprintf(retStr,sizeof(buf),"BIPHASE");
1028 break;
1029 case DEMOD_BIa:
1030 snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)");
1031 break;
1032 default:
1033 snprintf(retStr,sizeof(buf),"(Unknown)");
1034 break;
1035 }
1036 return buf;
1037 }
1038
1039 uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits){
1040
1041 int i = start;
1042 int j = len-1;
1043
1044 if (len > 32) return 0;
1045
1046 uint32_t tmp = 0;
1047 for (; j >= 0; --j, ++i)
1048 tmp |= bits[i] << j;
1049
1050 return tmp;
1051 }
1052
1053 static command_t CommandTable[] =
1054 {
1055 {"help", CmdHelp, 1, "This help"},
1056 {"config", CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
1057 {"detect", CmdT55xxDetect, 0, "[1] Try detecting the tag modulation from reading the configuration block."},
1058 {"read", CmdT55xxReadBlock, 0, "<block> [password] -- Read T55xx block data (page 0) [optional password]"},
1059 {"write", CmdT55xxWriteBlock,0, "<block> <data> [password] -- Write T55xx block data (page 0) [optional password]"},
1060 {"trace", CmdT55xxReadTrace, 0, "[1] Show T55xx traceability data (page 1/ blk 0-1)"},
1061 {"info", CmdT55xxInfo, 0, "[1] Show T55xx configuration data (page 0/ blk 0)"},
1062 {"dump", CmdT55xxDump, 0, "[password] Dump T55xx card block 0-7. [optional password]"},
1063 {"special", special, 0, "Show block changes with 64 different offsets"},
1064 {NULL, NULL, 0, NULL}
1065 };
1066
1067 int CmdLFT55XX(const char *Cmd)
1068 {
1069 CmdsParse(CommandTable, Cmd);
1070 return 0;
1071 }
1072
1073 int CmdHelp(const char *Cmd)
1074 {
1075 CmdsHelp(CommandTable);
1076 return 0;
1077 }
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