]>
Commit | Line | Data |
---|---|---|
cee5a30d | 1 | //----------------------------------------------------------------------------- |
2 | // Gerhard de Koning Gans - May 2008 | |
3 | // Hagen Fritsch - June 2010 | |
4 | // Gerhard de Koning Gans - May 2011 | |
1e262141 | 5 | // Gerhard de Koning Gans - June 2012 - Added iClass card and reader emulation |
cee5a30d | 6 | // |
7 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, | |
8 | // at your option, any later version. See the LICENSE.txt file for the text of | |
9 | // the license. | |
10 | //----------------------------------------------------------------------------- | |
11 | // Routines to support iClass. | |
12 | //----------------------------------------------------------------------------- | |
13 | // Based on ISO14443a implementation. Still in experimental phase. | |
14 | // Contribution made during a security research at Radboud University Nijmegen | |
17505ce2 | 15 | // |
cee5a30d | 16 | // Please feel free to contribute and extend iClass support!! |
17 | //----------------------------------------------------------------------------- | |
18 | // | |
cee5a30d | 19 | // FIX: |
20 | // ==== | |
21 | // We still have sometimes a demodulation error when snooping iClass communication. | |
22 | // The resulting trace of a read-block-03 command may look something like this: | |
23 | // | |
17505ce2 | 24 | // + 22279: : 0c 03 e8 01 |
cee5a30d | 25 | // |
26 | // ...with an incorrect answer... | |
27 | // | |
28 | // + 85: 0: TAG ff! ff! ff! ff! ff! ff! ff! ff! bb 33 bb 00 01! 0e! 04! bb !crc | |
29 | // | |
30 | // We still left the error signalling bytes in the traces like 0xbb | |
31 | // | |
32 | // A correct trace should look like this: | |
33 | // | |
17505ce2 | 34 | // + 21112: : 0c 03 e8 01 |
35 | // + 85: 0: TAG ff ff ff ff ff ff ff ff ea f5 | |
cee5a30d | 36 | // |
37 | //----------------------------------------------------------------------------- | |
38 | ||
17505ce2 | 39 | #include "iclass.h" |
40 | ||
cee5a30d | 41 | #include "proxmark3.h" |
42 | #include "apps.h" | |
43 | #include "util.h" | |
44 | #include "string.h" | |
3d2c9c9b | 45 | #include "printf.h" |
7e67e42f | 46 | #include "common.h" |
fecd8202 | 47 | #include "cmd.h" |
6e49717b | 48 | #include "iso14443a.h" |
3d2c9c9b | 49 | #include "iso15693.h" |
1e262141 | 50 | // Needed for CRC in emulation mode; |
51 | // same construction as in ISO 14443; | |
52 | // different initial value (CRC_ICLASS) | |
53 | #include "iso14443crc.h" | |
c3963755 | 54 | #include "iso15693tools.h" |
b67f7ec3 | 55 | #include "protocols.h" |
10a8875c | 56 | #include "optimized_cipher.h" |
979c7655 | 57 | #include "usb_cdc.h" // for usb_poll_validate_length |
fc52fbd4 | 58 | #include "fpgaloader.h" |
10a8875c | 59 | |
8efd0b80 | 60 | // iCLASS has a slightly different timing compared to ISO15693. According to the picopass data sheet the tag response is expected 330us after |
61 | // the reader command. This is measured from end of reader EOF to first modulation of the tag's SOF which starts with a 56,64us unmodulated period. | |
62 | // 330us = 140 ssp_clk cycles @ 423,75kHz when simulating. | |
63 | // 56,64us = 24 ssp_clk_cycles | |
c41dd5f9 | 64 | #define DELAY_ICLASS_VCD_TO_VICC_SIM (140 - 24) |
65 | // times in ssp_clk_cycles @ 3,3625MHz when acting as reader | |
ece38ef3 | 66 | #define DELAY_ICLASS_VICC_TO_VCD_READER DELAY_ISO15693_VICC_TO_VCD_READER |
c41dd5f9 | 67 | // times in samples @ 212kHz when acting as reader |
ece38ef3 | 68 | #define ICLASS_READER_TIMEOUT_ACTALL 330 // 1558us, nominal 330us + 7slots*160us = 1450us |
496bb4be | 69 | #define ICLASS_READER_TIMEOUT_UPDATE 3390 // 16000us, nominal 4-15ms |
c41dd5f9 | 70 | #define ICLASS_READER_TIMEOUT_OTHERS 80 // 380us, nominal 330us |
71 | ||
be09ea86 | 72 | #define ICLASS_BUFFER_SIZE 34 // we expect max 34 bytes as tag answer (response to READ4) |
8efd0b80 | 73 | |
cee5a30d | 74 | |
75 | //============================================================================= | |
be09ea86 | 76 | // A `sniffer' for iClass communication |
cee5a30d | 77 | // Both sides of communication! |
78 | //============================================================================= | |
be09ea86 | 79 | void SnoopIClass(uint8_t jam_search_len, uint8_t *jam_search_string) { |
80 | SnoopIso15693(jam_search_len, jam_search_string); | |
1e262141 | 81 | } |
82 | ||
be09ea86 | 83 | |
912a3e94 | 84 | void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) { |
17505ce2 | 85 | int i; |
86 | for (i = 0; i < 8; i++) { | |
912a3e94 | 87 | rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5); |
1e262141 | 88 | } |
89 | } | |
90 | ||
be09ea86 | 91 | |
3d2c9c9b | 92 | // Encode SOF only |
17505ce2 | 93 | static void CodeIClassTagSOF() { |
81012e67 | 94 | ToSendReset(); |
645c960f | 95 | ToSend[++ToSendMax] = 0x1D; |
1e262141 | 96 | ToSendMax++; |
97 | } | |
1e262141 | 98 | |
be09ea86 | 99 | |
17505ce2 | 100 | static void AppendCrc(uint8_t *data, int len) { |
101 | ComputeCrc14443(CRC_ICLASS, data, len, data+len, data+len+1); | |
102 | } | |
81cd0474 | 103 | |
b67f7ec3 | 104 | |
ff7bb4ef MHS |
105 | /** |
106 | * @brief Does the actual simulation | |
ff7bb4ef | 107 | */ |
17505ce2 | 108 | int doIClassSimulation(int simulationMode, uint8_t *reader_mac_buf) { |
0ab9002f | 109 | |
b67f7ec3 MHS |
110 | // free eventually allocated BigBuf memory |
111 | BigBuf_free_keep_EM(); | |
55eaed8f | 112 | |
ae60ceca | 113 | uint16_t page_size = 32 * 8; |
114 | uint8_t current_page = 0; | |
0ab9002f | 115 | |
ae60ceca | 116 | // maintain cipher states for both credit and debit key for each page |
117 | State cipher_state_KC[8]; | |
118 | State cipher_state_KD[8]; | |
119 | State *cipher_state = &cipher_state_KD[0]; | |
8efd0b80 | 120 | |
0ab9002f | 121 | uint8_t *emulator = BigBuf_get_EM_addr(); |
122 | uint8_t *csn = emulator; | |
0ab9002f | 123 | |
1e262141 | 124 | // CSN followed by two CRC bytes |
ae60ceca | 125 | uint8_t anticoll_data[10]; |
126 | uint8_t csn_data[10]; | |
17505ce2 | 127 | memcpy(csn_data, csn, sizeof(csn_data)); |
128 | Dbprintf("Simulating CSN %02x%02x%02x%02x%02x%02x%02x%02x", csn[0], csn[1], csn[2], csn[3], csn[4], csn[5], csn[6], csn[7]); | |
1e262141 | 129 | |
1e262141 | 130 | // Construct anticollision-CSN |
17505ce2 | 131 | rotateCSN(csn_data, anticoll_data); |
1e262141 | 132 | |
133 | // Compute CRC on both CSNs | |
0ab9002f | 134 | AppendCrc(anticoll_data, 8); |
135 | AppendCrc(csn_data, 8); | |
b67f7ec3 | 136 | |
8efd0b80 | 137 | uint8_t diversified_key_d[8] = { 0x00 }; |
138 | uint8_t diversified_key_c[8] = { 0x00 }; | |
ae60ceca | 139 | uint8_t *diversified_key = diversified_key_d; |
8efd0b80 | 140 | |
ae60ceca | 141 | // configuration block |
142 | uint8_t conf_block[10] = {0x12, 0xFF, 0xFF, 0xFF, 0x7F, 0x1F, 0xFF, 0x3C, 0x00, 0x00}; | |
ae60ceca | 143 | |
b67f7ec3 | 144 | // e-Purse |
0ab9002f | 145 | uint8_t card_challenge_data[8] = { 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
ae60ceca | 146 | |
0ab9002f | 147 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 148 | // initialize from page 0 |
149 | memcpy(conf_block, emulator + 8 * 1, 8); | |
150 | memcpy(card_challenge_data, emulator + 8 * 2, 8); // e-purse | |
151 | memcpy(diversified_key_d, emulator + 8 * 3, 8); // Kd | |
152 | memcpy(diversified_key_c, emulator + 8 * 4, 8); // Kc | |
b67f7ec3 | 153 | } |
ae60ceca | 154 | |
8efd0b80 | 155 | AppendCrc(conf_block, 8); |
156 | ||
0ab9002f | 157 | // save card challenge for sim2,4 attack |
158 | if (reader_mac_buf != NULL) { | |
159 | memcpy(reader_mac_buf, card_challenge_data, 8); | |
160 | } | |
1e262141 | 161 | |
ae60ceca | 162 | if (conf_block[5] & 0x80) { |
163 | page_size = 256 * 8; | |
164 | } | |
165 | ||
166 | // From PicoPass DS: | |
167 | // When the page is in personalization mode this bit is equal to 1. | |
168 | // Once the application issuer has personalized and coded its dedicated areas, this bit must be set to 0: | |
169 | // the page is then "in application mode". | |
170 | bool personalization_mode = conf_block[7] & 0x80; | |
171 | ||
172 | // chip memory may be divided in 8 pages | |
173 | uint8_t max_page = conf_block[4] & 0x10 ? 0 : 7; | |
8efd0b80 | 174 | |
ae60ceca | 175 | // Precalculate the cipher states, feeding it the CC |
176 | cipher_state_KD[0] = opt_doTagMAC_1(card_challenge_data, diversified_key_d); | |
177 | cipher_state_KC[0] = opt_doTagMAC_1(card_challenge_data, diversified_key_c); | |
178 | if (simulationMode == ICLASS_SIM_MODE_FULL) { | |
179 | for (int i = 1; i < max_page; i++) { | |
180 | uint8_t *epurse = emulator + i*page_size + 8*2; | |
181 | uint8_t *Kd = emulator + i*page_size + 8*3; | |
182 | uint8_t *Kc = emulator + i*page_size + 8*4; | |
183 | cipher_state_KD[i] = opt_doTagMAC_1(epurse, Kd); | |
184 | cipher_state_KC[i] = opt_doTagMAC_1(epurse, Kc); | |
185 | } | |
186 | } | |
8efd0b80 | 187 | |
ff7bb4ef | 188 | int exitLoop = 0; |
1e262141 | 189 | // Reader 0a |
190 | // Tag 0f | |
191 | // Reader 0c | |
192 | // Tag anticoll. CSN | |
193 | // Reader 81 anticoll. CSN | |
194 | // Tag CSN | |
195 | ||
55eaed8f | 196 | uint8_t *modulated_response; |
b19caaef | 197 | int modulated_response_size = 0; |
17505ce2 | 198 | uint8_t *trace_data = NULL; |
55eaed8f | 199 | int trace_data_size = 0; |
1e262141 | 200 | |
645c960f | 201 | // Respond SOF -- takes 1 bytes |
ae60ceca | 202 | uint8_t *resp_sof = BigBuf_malloc(1); |
b67f7ec3 | 203 | int resp_sof_Len; |
1e262141 | 204 | |
205 | // Anticollision CSN (rotated CSN) | |
645c960f | 206 | // 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte) |
0ab9002f | 207 | uint8_t *resp_anticoll = BigBuf_malloc(22); |
b67f7ec3 | 208 | int resp_anticoll_len; |
1e262141 | 209 | |
0ab9002f | 210 | // CSN (block 0) |
645c960f | 211 | // 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte) |
0ab9002f | 212 | uint8_t *resp_csn = BigBuf_malloc(22); |
b67f7ec3 | 213 | int resp_csn_len; |
1e262141 | 214 | |
0ab9002f | 215 | // configuration (block 1) picopass 2ks |
216 | uint8_t *resp_conf = BigBuf_malloc(22); | |
217 | int resp_conf_len; | |
0ab9002f | 218 | |
219 | // e-Purse (block 2) | |
b3cc5f29 | 220 | // 18: Takes 2 bytes for SOF/EOF and 8 * 2 = 16 bytes (2 bytes/bit) |
0ab9002f | 221 | uint8_t *resp_cc = BigBuf_malloc(18); |
b67f7ec3 | 222 | int resp_cc_len; |
1e262141 | 223 | |
a66f26da | 224 | // Kd, Kc (blocks 3 and 4). Cannot be read. Always respond with 0xff bytes only |
225 | uint8_t *resp_ff = BigBuf_malloc(22); | |
226 | int resp_ff_len; | |
227 | uint8_t ff_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00}; | |
228 | AppendCrc(ff_data, 8); | |
229 | ||
0ab9002f | 230 | // Application Issuer Area (block 5) |
231 | uint8_t *resp_aia = BigBuf_malloc(22); | |
232 | int resp_aia_len; | |
233 | uint8_t aia_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00}; | |
234 | AppendCrc(aia_data, 8); | |
235 | ||
f71f4deb | 236 | uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE); |
1e262141 | 237 | int len; |
238 | ||
1e262141 | 239 | // Prepare card messages |
1e262141 | 240 | |
3d2c9c9b | 241 | // First card answer: SOF only |
1e262141 | 242 | CodeIClassTagSOF(); |
17505ce2 | 243 | memcpy(resp_sof, ToSend, ToSendMax); |
244 | resp_sof_Len = ToSendMax; | |
1e262141 | 245 | |
246 | // Anticollision CSN | |
3d2c9c9b | 247 | CodeIso15693AsTag(anticoll_data, sizeof(anticoll_data)); |
17505ce2 | 248 | memcpy(resp_anticoll, ToSend, ToSendMax); |
249 | resp_anticoll_len = ToSendMax; | |
1e262141 | 250 | |
0ab9002f | 251 | // CSN (block 0) |
3d2c9c9b | 252 | CodeIso15693AsTag(csn_data, sizeof(csn_data)); |
17505ce2 | 253 | memcpy(resp_csn, ToSend, ToSendMax); |
254 | resp_csn_len = ToSendMax; | |
1e262141 | 255 | |
0ab9002f | 256 | // Configuration (block 1) |
ae60ceca | 257 | CodeIso15693AsTag(conf_block, sizeof(conf_block)); |
0ab9002f | 258 | memcpy(resp_conf, ToSend, ToSendMax); |
259 | resp_conf_len = ToSendMax; | |
260 | ||
261 | // e-Purse (block 2) | |
3d2c9c9b | 262 | CodeIso15693AsTag(card_challenge_data, sizeof(card_challenge_data)); |
0ab9002f | 263 | memcpy(resp_cc, ToSend, ToSendMax); |
264 | resp_cc_len = ToSendMax; | |
265 | ||
a66f26da | 266 | // Kd, Kc (blocks 3 and 4) |
267 | CodeIso15693AsTag(ff_data, sizeof(ff_data)); | |
268 | memcpy(resp_ff, ToSend, ToSendMax); | |
269 | resp_ff_len = ToSendMax; | |
270 | ||
0ab9002f | 271 | // Application Issuer Area (block 5) |
3d2c9c9b | 272 | CodeIso15693AsTag(aia_data, sizeof(aia_data)); |
0ab9002f | 273 | memcpy(resp_aia, ToSend, ToSendMax); |
274 | resp_aia_len = ToSendMax; | |
1e262141 | 275 | |
b19caaef | 276 | //This is used for responding to READ-block commands or other data which is dynamically generated |
a66f26da | 277 | uint8_t *data_generic_trace = BigBuf_malloc(32 + 2); // 32 bytes data + 2byte CRC is max tag answer |
278 | uint8_t *data_response = BigBuf_malloc( (32 + 2) * 2 + 2); | |
e3dc1e4c | 279 | |
f83cc126 | 280 | bool buttonPressed = false; |
5b12974a | 281 | enum { IDLE, ACTIVATED, SELECTED, HALTED } chip_state = IDLE; |
282 | ||
17505ce2 | 283 | while (!exitLoop) { |
0ab9002f | 284 | WDT_HIT(); |
3fe4ff4f | 285 | |
3d2c9c9b | 286 | uint32_t reader_eof_time = 0; |
287 | len = GetIso15693CommandFromReader(receivedCmd, MAX_FRAME_SIZE, &reader_eof_time); | |
288 | if (len < 0) { | |
f83cc126 | 289 | buttonPressed = true; |
1e262141 | 290 | break; |
81cd0474 | 291 | } |
a66f26da | 292 | |
0ab9002f | 293 | // Now look at the reader command and provide appropriate responses |
294 | // default is no response: | |
295 | modulated_response = NULL; | |
296 | modulated_response_size = 0; | |
297 | trace_data = NULL; | |
298 | trace_data_size = 0; | |
a66f26da | 299 | |
5b12974a | 300 | if (receivedCmd[0] == ICLASS_CMD_ACTALL && len == 1) { |
301 | // Reader in anticollision phase | |
302 | if (chip_state != HALTED) { | |
303 | modulated_response = resp_sof; | |
304 | modulated_response_size = resp_sof_Len; | |
5b12974a | 305 | chip_state = ACTIVATED; |
306 | } | |
0ab9002f | 307 | |
308 | } else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) { // identify | |
5b12974a | 309 | // Reader asks for anticollision CSN |
310 | if (chip_state == SELECTED || chip_state == ACTIVATED) { | |
311 | modulated_response = resp_anticoll; | |
312 | modulated_response_size = resp_anticoll_len; | |
313 | trace_data = anticoll_data; | |
314 | trace_data_size = sizeof(anticoll_data); | |
315 | } | |
316 | ||
317 | } else if (receivedCmd[0] == ICLASS_CMD_SELECT && len == 9) { | |
318 | // Reader selects anticollision CSN. | |
319 | // Tag sends the corresponding real CSN | |
320 | if (chip_state == ACTIVATED || chip_state == SELECTED) { | |
321 | if (!memcmp(receivedCmd+1, anticoll_data, 8)) { | |
322 | modulated_response = resp_csn; | |
323 | modulated_response_size = resp_csn_len; | |
324 | trace_data = csn_data; | |
325 | trace_data_size = sizeof(csn_data); | |
326 | chip_state = SELECTED; | |
327 | } else { | |
328 | chip_state = IDLE; | |
329 | } | |
330 | } else if (chip_state == HALTED) { | |
331 | // RESELECT with CSN | |
332 | if (!memcmp(receivedCmd+1, csn_data, 8)) { | |
333 | modulated_response = resp_csn; | |
334 | modulated_response_size = resp_csn_len; | |
335 | trace_data = csn_data; | |
336 | trace_data_size = sizeof(csn_data); | |
337 | chip_state = SELECTED; | |
338 | } | |
339 | } | |
a66f26da | 340 | |
0ab9002f | 341 | } else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4) { // read block |
342 | uint16_t blockNo = receivedCmd[1]; | |
5b12974a | 343 | if (chip_state == SELECTED) { |
344 | if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) { | |
345 | // provide defaults for blocks 0 ... 5 | |
346 | switch (blockNo) { | |
347 | case 0: // csn (block 00) | |
348 | modulated_response = resp_csn; | |
349 | modulated_response_size = resp_csn_len; | |
350 | trace_data = csn_data; | |
351 | trace_data_size = sizeof(csn_data); | |
352 | break; | |
353 | case 1: // configuration (block 01) | |
354 | modulated_response = resp_conf; | |
355 | modulated_response_size = resp_conf_len; | |
ae60ceca | 356 | trace_data = conf_block; |
357 | trace_data_size = sizeof(conf_block); | |
5b12974a | 358 | break; |
359 | case 2: // e-purse (block 02) | |
360 | modulated_response = resp_cc; | |
361 | modulated_response_size = resp_cc_len; | |
362 | trace_data = card_challenge_data; | |
363 | trace_data_size = sizeof(card_challenge_data); | |
364 | // set epurse of sim2,4 attack | |
365 | if (reader_mac_buf != NULL) { | |
366 | memcpy(reader_mac_buf, card_challenge_data, 8); | |
367 | } | |
368 | break; | |
369 | case 3: | |
370 | case 4: // Kd, Kc, always respond with 0xff bytes | |
371 | modulated_response = resp_ff; | |
372 | modulated_response_size = resp_ff_len; | |
373 | trace_data = ff_data; | |
374 | trace_data_size = sizeof(ff_data); | |
375 | break; | |
376 | case 5: // Application Issuer Area (block 05) | |
377 | modulated_response = resp_aia; | |
378 | modulated_response_size = resp_aia_len; | |
379 | trace_data = aia_data; | |
380 | trace_data_size = sizeof(aia_data); | |
381 | break; | |
382 | // default: don't respond | |
383 | } | |
384 | } else if (simulationMode == ICLASS_SIM_MODE_FULL) { | |
385 | if (blockNo == 3 || blockNo == 4) { // Kd, Kc, always respond with 0xff bytes | |
a66f26da | 386 | modulated_response = resp_ff; |
387 | modulated_response_size = resp_ff_len; | |
388 | trace_data = ff_data; | |
389 | trace_data_size = sizeof(ff_data); | |
5b12974a | 390 | } else { // use data from emulator memory |
ae60ceca | 391 | memcpy(data_generic_trace, emulator + current_page*page_size + 8*blockNo, 8); |
5b12974a | 392 | AppendCrc(data_generic_trace, 8); |
393 | trace_data = data_generic_trace; | |
394 | trace_data_size = 10; | |
395 | CodeIso15693AsTag(trace_data, trace_data_size); | |
396 | memcpy(data_response, ToSend, ToSendMax); | |
397 | modulated_response = data_response; | |
398 | modulated_response_size = ToSendMax; | |
399 | } | |
0ab9002f | 400 | } |
5b12974a | 401 | } |
402 | ||
403 | } else if ((receivedCmd[0] == ICLASS_CMD_READCHECK_KD | |
8ddb81a2 | 404 | || receivedCmd[0] == ICLASS_CMD_READCHECK_KC) && receivedCmd[1] == 0x02 && len == 2) { |
5b12974a | 405 | // Read e-purse (88 02 || 18 02) |
406 | if (chip_state == SELECTED) { | |
ae60ceca | 407 | if(receivedCmd[0] == ICLASS_CMD_READCHECK_KD){ |
408 | cipher_state = &cipher_state_KD[current_page]; | |
409 | diversified_key = diversified_key_d; | |
410 | } else { | |
8efd0b80 | 411 | cipher_state = &cipher_state_KC[current_page]; |
ae60ceca | 412 | diversified_key = diversified_key_c; |
413 | } | |
5b12974a | 414 | modulated_response = resp_cc; |
415 | modulated_response_size = resp_cc_len; | |
416 | trace_data = card_challenge_data; | |
417 | trace_data_size = sizeof(card_challenge_data); | |
5b12974a | 418 | } |
419 | ||
8efd0b80 | 420 | } else if ((receivedCmd[0] == ICLASS_CMD_CHECK_KC |
8ddb81a2 | 421 | || receivedCmd[0] == ICLASS_CMD_CHECK_KD) && len == 9) { |
5b12974a | 422 | // Reader random and reader MAC!!! |
423 | if (chip_state == SELECTED) { | |
424 | if (simulationMode == ICLASS_SIM_MODE_FULL) { | |
425 | //NR, from reader, is in receivedCmd+1 | |
ae60ceca | 426 | opt_doTagMAC_2(*cipher_state, receivedCmd+1, data_generic_trace, diversified_key); |
a66f26da | 427 | trace_data = data_generic_trace; |
5b12974a | 428 | trace_data_size = 4; |
a66f26da | 429 | CodeIso15693AsTag(trace_data, trace_data_size); |
430 | memcpy(data_response, ToSend, ToSendMax); | |
431 | modulated_response = data_response; | |
432 | modulated_response_size = ToSendMax; | |
5b12974a | 433 | //exitLoop = true; |
434 | } else { // Not fullsim, we don't respond | |
435 | // We do not know what to answer, so lets keep quiet | |
436 | if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) { | |
437 | if (reader_mac_buf != NULL) { | |
438 | // save NR and MAC for sim 2,4 | |
439 | memcpy(reader_mac_buf + 8, receivedCmd + 1, 8); | |
440 | } | |
441 | exitLoop = true; | |
442 | } | |
a66f26da | 443 | } |
0ab9002f | 444 | } |
445 | ||
5b12974a | 446 | } else if (receivedCmd[0] == ICLASS_CMD_HALT && len == 1) { |
447 | if (chip_state == SELECTED) { | |
448 | // Reader ends the session | |
ae60ceca | 449 | modulated_response = resp_sof; |
450 | modulated_response_size = resp_sof_Len; | |
5b12974a | 451 | chip_state = HALTED; |
452 | } | |
0ab9002f | 453 | |
5b12974a | 454 | } else if (simulationMode == ICLASS_SIM_MODE_FULL && receivedCmd[0] == ICLASS_CMD_READ4 && len == 4) { // 0x06 |
455 | //Read 4 blocks | |
456 | if (chip_state == SELECTED) { | |
ae60ceca | 457 | uint8_t blockNo = receivedCmd[1]; |
458 | memcpy(data_generic_trace, emulator + current_page*page_size + blockNo*8, 8 * 4); | |
5b12974a | 459 | AppendCrc(data_generic_trace, 8 * 4); |
b19caaef | 460 | trace_data = data_generic_trace; |
5b12974a | 461 | trace_data_size = 8 * 4 + 2; |
3d2c9c9b | 462 | CodeIso15693AsTag(trace_data, trace_data_size); |
b67f7ec3 MHS |
463 | memcpy(data_response, ToSend, ToSendMax); |
464 | modulated_response = data_response; | |
465 | modulated_response_size = ToSendMax; | |
ff7bb4ef | 466 | } |
b67f7ec3 | 467 | |
5b12974a | 468 | } else if (receivedCmd[0] == ICLASS_CMD_UPDATE && (len == 12 || len == 14)) { |
0ab9002f | 469 | // We're expected to respond with the data+crc, exactly what's already in the receivedCmd |
470 | // receivedCmd is now UPDATE 1b | ADDRESS 1b | DATA 8b | Signature 4b or CRC 2b | |
5b12974a | 471 | if (chip_state == SELECTED) { |
8ddb81a2 | 472 | uint8_t blockNo = receivedCmd[1]; |
473 | if (blockNo == 2) { // update e-purse | |
474 | memcpy(card_challenge_data, receivedCmd+2, 8); | |
475 | CodeIso15693AsTag(card_challenge_data, sizeof(card_challenge_data)); | |
476 | memcpy(resp_cc, ToSend, ToSendMax); | |
477 | resp_cc_len = ToSendMax; | |
ae60ceca | 478 | cipher_state_KD[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_d); |
479 | cipher_state_KC[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_c); | |
8ddb81a2 | 480 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 481 | memcpy(emulator + current_page*page_size + 8*2, card_challenge_data, 8); |
8ddb81a2 | 482 | } |
483 | } else if (blockNo == 3) { // update Kd | |
ae60ceca | 484 | for (int i = 0; i < 8; i++) { |
485 | if (personalization_mode) { | |
8efd0b80 | 486 | diversified_key_d[i] = receivedCmd[2 + i]; |
ae60ceca | 487 | } else { |
488 | diversified_key_d[i] ^= receivedCmd[2 + i]; | |
8efd0b80 | 489 | } |
8ddb81a2 | 490 | } |
8efd0b80 | 491 | cipher_state_KD[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_d); |
8ddb81a2 | 492 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 493 | memcpy(emulator + current_page*page_size + 8*3, diversified_key_d, 8); |
8ddb81a2 | 494 | } |
8efd0b80 | 495 | } else if (blockNo == 4) { // update Kc |
ae60ceca | 496 | for (int i = 0; i < 8; i++) { |
497 | if (personalization_mode) { | |
8efd0b80 | 498 | diversified_key_c[i] = receivedCmd[2 + i]; |
ae60ceca | 499 | } else { |
500 | diversified_key_c[i] ^= receivedCmd[2 + i]; | |
8efd0b80 | 501 | } |
8ddb81a2 | 502 | } |
ae60ceca | 503 | cipher_state_KC[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_c); |
8ddb81a2 | 504 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 505 | memcpy(emulator + current_page*page_size + 8*4, diversified_key_c, 8); |
8ddb81a2 | 506 | } |
507 | } else if (simulationMode == ICLASS_SIM_MODE_FULL) { // update any other data block | |
ae60ceca | 508 | memcpy(emulator + current_page*page_size + 8*blockNo, receivedCmd+2, 8); |
8efd0b80 | 509 | } |
5b12974a | 510 | memcpy(data_generic_trace, receivedCmd + 2, 8); |
511 | AppendCrc(data_generic_trace, 8); | |
512 | trace_data = data_generic_trace; | |
513 | trace_data_size = 10; | |
514 | CodeIso15693AsTag(trace_data, trace_data_size); | |
515 | memcpy(data_response, ToSend, ToSendMax); | |
516 | modulated_response = data_response; | |
517 | modulated_response_size = ToSendMax; | |
518 | } | |
519 | ||
520 | } else if (receivedCmd[0] == ICLASS_CMD_PAGESEL && len == 4) { | |
0ab9002f | 521 | // Pagesel |
ae60ceca | 522 | // Chips with a single page will not answer to this command |
8efd0b80 | 523 | // Otherwise, we should answer 8bytes (conf block 1) + 2bytes CRC |
5b12974a | 524 | if (chip_state == SELECTED) { |
ae60ceca | 525 | if (simulationMode == ICLASS_SIM_MODE_FULL && max_page > 0) { |
526 | current_page = receivedCmd[1]; | |
527 | memcpy(data_generic_trace, emulator + current_page*page_size + 8*1, 8); | |
528 | memcpy(diversified_key_d, emulator + current_page*page_size + 8*3, 8); | |
8efd0b80 | 529 | memcpy(diversified_key_c, emulator + current_page*page_size + 8*4, 8); |
ae60ceca | 530 | cipher_state = &cipher_state_KD[current_page]; |
531 | personalization_mode = data_generic_trace[7] & 0x80; | |
532 | AppendCrc(data_generic_trace, 8); | |
533 | trace_data = data_generic_trace; | |
534 | trace_data_size = 10; | |
535 | CodeIso15693AsTag(trace_data, trace_data_size); | |
8efd0b80 | 536 | memcpy(data_response, ToSend, ToSendMax); |
ae60ceca | 537 | modulated_response = data_response; |
538 | modulated_response_size = ToSendMax; | |
539 | } | |
5b12974a | 540 | } |
0ab9002f | 541 | |
e49d31c0 | 542 | } else if (receivedCmd[0] == 0x26 && len == 5) { |
543 | // standard ISO15693 INVENTORY command. Ignore. | |
544 | ||
17505ce2 | 545 | } else { |
5b12974a | 546 | // don't know how to handle this command |
3d2c9c9b | 547 | char debug_message[250]; // should be enough |
548 | sprintf(debug_message, "Unhandled command (len = %d) received from reader:", len); | |
549 | for (int i = 0; i < len && strlen(debug_message) < sizeof(debug_message) - 3 - 1; i++) { | |
550 | sprintf(debug_message + strlen(debug_message), " %02x", receivedCmd[i]); | |
551 | } | |
552 | Dbprintf("%s", debug_message); | |
1e262141 | 553 | // Do not respond |
1e262141 | 554 | } |
555 | ||
55eaed8f | 556 | /** |
8efd0b80 | 557 | A legit tag has about 273,4us delay between reader EOT and tag SOF. |
55eaed8f | 558 | **/ |
17505ce2 | 559 | if (modulated_response_size > 0) { |
c41dd5f9 | 560 | uint32_t response_time = reader_eof_time + DELAY_ICLASS_VCD_TO_VICC_SIM; |
8efd0b80 | 561 | TransmitTo15693Reader(modulated_response, modulated_response_size, &response_time, 0, false); |
c41dd5f9 | 562 | LogTrace_ISO15693(trace_data, trace_data_size, response_time*32, response_time*32 + modulated_response_size/2, NULL, false); |
81cd0474 | 563 | } |
f83cc126 | 564 | |
81cd0474 | 565 | } |
1e262141 | 566 | |
17505ce2 | 567 | if (buttonPressed) |
f83cc126 MHS |
568 | { |
569 | DbpString("Button pressed"); | |
570 | } | |
f83cc126 | 571 | return buttonPressed; |
1e262141 | 572 | } |
573 | ||
17505ce2 | 574 | /** |
575 | * @brief SimulateIClass simulates an iClass card. | |
576 | * @param arg0 type of simulation | |
577 | * - 0 uses the first 8 bytes in usb data as CSN | |
578 | * - 2 "dismantling iclass"-attack. This mode iterates through all CSN's specified | |
579 | * in the usb data. This mode collects MAC from the reader, in order to do an offline | |
580 | * attack on the keys. For more info, see "dismantling iclass" and proxclone.com. | |
581 | * - Other : Uses the default CSN (031fec8af7ff12e0) | |
582 | * @param arg1 - number of CSN's contained in datain (applicable for mode 2 only) | |
583 | * @param arg2 | |
584 | * @param datain | |
585 | */ | |
586 | void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain) { | |
8efd0b80 | 587 | |
ae60ceca | 588 | LED_A_ON(); |
8efd0b80 | 589 | |
17505ce2 | 590 | uint32_t simType = arg0; |
591 | uint32_t numberOfCSNS = arg1; | |
0ab9002f | 592 | |
3d2c9c9b | 593 | // setup hardware for simulation: |
17505ce2 | 594 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
3d2c9c9b | 595 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
a66f26da | 596 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_NO_MODULATION); |
ae60ceca | 597 | LED_D_OFF(); |
3d2c9c9b | 598 | FpgaSetupSsc(FPGA_MAJOR_MODE_HF_SIMULATOR); |
599 | StartCountSspClk(); | |
e3dc1e4c | 600 | |
17505ce2 | 601 | // Enable and clear the trace |
602 | set_tracing(true); | |
603 | clear_trace(); | |
604 | //Use the emulator memory for SIM | |
605 | uint8_t *emulator = BigBuf_get_EM_addr(); | |
e3dc1e4c | 606 | |
0ab9002f | 607 | if (simType == ICLASS_SIM_MODE_CSN) { |
17505ce2 | 608 | // Use the CSN from commandline |
609 | memcpy(emulator, datain, 8); | |
0ab9002f | 610 | doIClassSimulation(ICLASS_SIM_MODE_CSN, NULL); |
611 | } else if (simType == ICLASS_SIM_MODE_CSN_DEFAULT) { | |
17505ce2 | 612 | //Default CSN |
613 | uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 }; | |
614 | // Use the CSN from commandline | |
615 | memcpy(emulator, csn_crc, 8); | |
0ab9002f | 616 | doIClassSimulation(ICLASS_SIM_MODE_CSN, NULL); |
617 | } else if (simType == ICLASS_SIM_MODE_READER_ATTACK) { | |
17505ce2 | 618 | uint8_t mac_responses[USB_CMD_DATA_SIZE] = { 0 }; |
619 | Dbprintf("Going into attack mode, %d CSNS sent", numberOfCSNS); | |
620 | // In this mode, a number of csns are within datain. We'll simulate each one, one at a time | |
0ab9002f | 621 | // in order to collect MAC's from the reader. This can later be used in an offline-attack |
17505ce2 | 622 | // in order to obtain the keys, as in the "dismantling iclass"-paper. |
0ab9002f | 623 | int i; |
624 | for (i = 0; i < numberOfCSNS && i*16+16 <= USB_CMD_DATA_SIZE; i++) { | |
625 | // The usb data is 512 bytes, fitting 32 responses (8 byte CC + 4 Byte NR + 4 Byte MAC = 16 Byte response). | |
17505ce2 | 626 | memcpy(emulator, datain+(i*8), 8); |
0ab9002f | 627 | if (doIClassSimulation(ICLASS_SIM_MODE_EXIT_AFTER_MAC, mac_responses+i*16)) { |
628 | // Button pressed | |
629 | break; | |
1e262141 | 630 | } |
3d2c9c9b | 631 | Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x", |
632 | datain[i*8+0], datain[i*8+1], datain[i*8+2], datain[i*8+3], | |
633 | datain[i*8+4], datain[i*8+5], datain[i*8+6], datain[i*8+7]); | |
634 | Dbprintf("NR,MAC: %02x %02x %02x %02x %02x %02x %02x %02x", | |
5b12974a | 635 | mac_responses[i*16+ 8], mac_responses[i*16+ 9], mac_responses[i*16+10], mac_responses[i*16+11], |
636 | mac_responses[i*16+12], mac_responses[i*16+13], mac_responses[i*16+14], mac_responses[i*16+15]); | |
637 | SpinDelay(100); // give the reader some time to prepare for next CSN | |
1e262141 | 638 | } |
0ab9002f | 639 | cmd_send(CMD_ACK, CMD_SIMULATE_TAG_ICLASS, i, 0, mac_responses, i*16); |
640 | } else if (simType == ICLASS_SIM_MODE_FULL) { | |
17505ce2 | 641 | //This is 'full sim' mode, where we use the emulator storage for data. |
0ab9002f | 642 | doIClassSimulation(ICLASS_SIM_MODE_FULL, NULL); |
17505ce2 | 643 | } else { |
644 | // We may want a mode here where we hardcode the csns to use (from proxclone). | |
645 | // That will speed things up a little, but not required just yet. | |
646 | Dbprintf("The mode is not implemented, reserved for future use"); | |
1e262141 | 647 | } |
ae60ceca | 648 | |
17505ce2 | 649 | Dbprintf("Done..."); |
1e262141 | 650 | |
ae60ceca | 651 | LED_A_OFF(); |
1e262141 | 652 | } |
653 | ||
17505ce2 | 654 | |
1e262141 | 655 | /// THE READER CODE |
656 | ||
c41dd5f9 | 657 | static void ReaderTransmitIClass(uint8_t *frame, int len, uint32_t *start_time) { |
17505ce2 | 658 | |
c41dd5f9 | 659 | CodeIso15693AsReader(frame, len); |
17505ce2 | 660 | |
c41dd5f9 | 661 | TransmitTo15693Tag(ToSend, ToSendMax, start_time); |
17505ce2 | 662 | |
c41dd5f9 | 663 | uint32_t end_time = *start_time + 32*(8*ToSendMax-4); // substract the 4 padding bits after EOF |
664 | LogTrace_ISO15693(frame, len, *start_time*4, end_time*4, NULL, true); | |
1e262141 | 665 | } |
666 | ||
667 | ||
ece38ef3 | 668 | static bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, size_t max_resp_size, |
496bb4be | 669 | uint8_t expected_size, uint8_t retries, uint32_t start_time, uint32_t timeout, uint32_t *eof_time) { |
17505ce2 | 670 | while (retries-- > 0) { |
c41dd5f9 | 671 | ReaderTransmitIClass(command, cmdsize, &start_time); |
496bb4be | 672 | if (expected_size == GetIso15693AnswerFromTag(resp, max_resp_size, timeout, eof_time)) { |
aa53efc3 | 673 | return true; |
c8dd9b09 MHS |
674 | } |
675 | } | |
aa53efc3 | 676 | return false;//Error |
c8dd9b09 MHS |
677 | } |
678 | ||
679 | /** | |
ece38ef3 | 680 | * @brief Selects an iclass tag |
681 | * @param card_data where the CSN is stored for return | |
682 | * @return false = fail | |
683 | * true = success | |
c8dd9b09 | 684 | */ |
ece38ef3 | 685 | static bool selectIclassTag(uint8_t *card_data, uint32_t *eof_time) { |
c41dd5f9 | 686 | uint8_t act_all[] = { 0x0a }; |
687 | uint8_t identify[] = { 0x0c }; | |
688 | uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
caaf9618 | 689 | |
f71f4deb | 690 | uint8_t resp[ICLASS_BUFFER_SIZE]; |
c8dd9b09 | 691 | |
c41dd5f9 | 692 | uint32_t start_time = GetCountSspClk(); |
c8dd9b09 MHS |
693 | |
694 | // Send act_all | |
c41dd5f9 | 695 | ReaderTransmitIClass(act_all, 1, &start_time); |
c8dd9b09 | 696 | // Card present? |
ece38ef3 | 697 | if (GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_ACTALL, eof_time) < 0) return false;//Fail |
698 | ||
c8dd9b09 | 699 | //Send Identify |
c41dd5f9 | 700 | start_time = *eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
701 | ReaderTransmitIClass(identify, 1, &start_time); | |
c8dd9b09 | 702 | //We expect a 10-byte response here, 8 byte anticollision-CSN and 2 byte CRC |
c41dd5f9 | 703 | uint8_t len = GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_OTHERS, eof_time); |
ece38ef3 | 704 | if (len != 10) return false;//Fail |
c8dd9b09 MHS |
705 | |
706 | //Copy the Anti-collision CSN to our select-packet | |
17505ce2 | 707 | memcpy(&select[1], resp, 8); |
c8dd9b09 | 708 | //Select the card |
c41dd5f9 | 709 | start_time = *eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
710 | ReaderTransmitIClass(select, sizeof(select), &start_time); | |
c8dd9b09 | 711 | //We expect a 10-byte response here, 8 byte CSN and 2 byte CRC |
c41dd5f9 | 712 | len = GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_OTHERS, eof_time); |
ece38ef3 | 713 | if (len != 10) return false;//Fail |
c8dd9b09 | 714 | |
ece38ef3 | 715 | //Success - we got CSN |
c8dd9b09 | 716 | //Save CSN in response data |
17505ce2 | 717 | memcpy(card_data, resp, 8); |
c8dd9b09 | 718 | |
ece38ef3 | 719 | return true; |
aa53efc3 | 720 | } |
c8dd9b09 | 721 | |
caaf9618 | 722 | |
ece38ef3 | 723 | // Select an iClass tag and read all blocks which are always readable without authentication |
496bb4be | 724 | void ReaderIClass(uint8_t flags) { |
1e262141 | 725 | |
ece38ef3 | 726 | LED_A_ON(); |
727 | ||
17505ce2 | 728 | uint8_t card_data[6 * 8] = {0}; |
83602aff | 729 | memset(card_data, 0xFF, sizeof(card_data)); |
34e2af02 | 730 | uint8_t resp[ICLASS_BUFFER_SIZE]; |
caaf9618 | 731 | //Read conf block CRC(0x01) => 0xfa 0x22 |
ece38ef3 | 732 | uint8_t readConf[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x01, 0xfa, 0x22}; |
733 | //Read e-purse block CRC(0x02) => 0x61 0x10 | |
734 | uint8_t readEpurse[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x02, 0x61, 0x10}; | |
34e2af02 | 735 | //Read App Issuer Area block CRC(0x05) => 0xde 0x64 |
ece38ef3 | 736 | uint8_t readAA[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x05, 0xde, 0x64}; |
caaf9618 | 737 | |
caaf9618 | 738 | uint8_t result_status = 0; |
34e2af02 | 739 | |
496bb4be | 740 | if (flags & FLAG_ICLASS_READER_INIT) { |
741 | Iso15693InitReader(); | |
742 | } | |
34e2af02 | 743 | |
496bb4be | 744 | if (flags & FLAG_ICLASS_READER_CLEARTRACE) { |
745 | set_tracing(true); | |
746 | clear_trace(); | |
747 | StartCountSspClk(); | |
748 | } | |
1e262141 | 749 | |
c41dd5f9 | 750 | uint32_t start_time = 0; |
751 | uint32_t eof_time = 0; | |
ece38ef3 | 752 | |
753 | if (selectIclassTag(resp, &eof_time)) { | |
754 | result_status = FLAG_ICLASS_READER_CSN; | |
755 | memcpy(card_data, resp, 8); | |
756 | } | |
496bb4be | 757 | |
ece38ef3 | 758 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 759 | |
ece38ef3 | 760 | //Read block 1, config |
496bb4be | 761 | if (flags & FLAG_ICLASS_READER_CONF) { |
762 | if (sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { | |
ece38ef3 | 763 | result_status |= FLAG_ICLASS_READER_CONF; |
764 | memcpy(card_data+8, resp, 8); | |
765 | } else { | |
766 | Dbprintf("Failed to read config block"); | |
c8dd9b09 | 767 | } |
c41dd5f9 | 768 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
ece38ef3 | 769 | } |
c8dd9b09 | 770 | |
ece38ef3 | 771 | //Read block 2, e-purse |
496bb4be | 772 | if (flags & FLAG_ICLASS_READER_CC) { |
773 | if (sendCmdGetResponseWithRetries(readEpurse, sizeof(readEpurse), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { | |
ece38ef3 | 774 | result_status |= FLAG_ICLASS_READER_CC; |
775 | memcpy(card_data + (8*2), resp, 8); | |
776 | } else { | |
777 | Dbprintf("Failed to read e-purse"); | |
caaf9618 | 778 | } |
ece38ef3 | 779 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
780 | } | |
caaf9618 | 781 | |
ece38ef3 | 782 | //Read block 5, AA |
496bb4be | 783 | if (flags & FLAG_ICLASS_READER_AA) { |
784 | if (sendCmdGetResponseWithRetries(readAA, sizeof(readAA), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { | |
ece38ef3 | 785 | result_status |= FLAG_ICLASS_READER_AA; |
786 | memcpy(card_data + (8*5), resp, 8); | |
787 | } else { | |
788 | Dbprintf("Failed to read AA block"); | |
c8dd9b09 | 789 | } |
6ce0e538 | 790 | } |
ece38ef3 | 791 | |
792 | cmd_send(CMD_ACK, result_status, 0, 0, card_data, sizeof(card_data)); | |
793 | ||
3ac22ee1 | 794 | LED_A_OFF(); |
cee5a30d | 795 | } |
796 | ||
ece38ef3 | 797 | |
c3963755 | 798 | void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) { |
c8dd9b09 | 799 | |
ece38ef3 | 800 | LED_A_ON(); |
801 | ||
802 | bool use_credit_key = false; | |
cb29e00a | 803 | uint8_t card_data[USB_CMD_DATA_SIZE]={0}; |
39d3ce5d MHS |
804 | uint16_t block_crc_LUT[255] = {0}; |
805 | ||
17505ce2 | 806 | //Generate a lookup table for block crc |
807 | for (int block = 0; block < 255; block++){ | |
808 | char bl = block; | |
809 | block_crc_LUT[block] = iclass_crc16(&bl ,1); | |
39d3ce5d MHS |
810 | } |
811 | //Dbprintf("Lookup table: %02x %02x %02x" ,block_crc_LUT[0],block_crc_LUT[1],block_crc_LUT[2]); | |
c8dd9b09 | 812 | |
ece38ef3 | 813 | uint8_t readcheck_cc[] = { ICLASS_CMD_READCHECK_KD, 0x02 }; |
814 | if (use_credit_key) | |
815 | readcheck_cc[0] = ICLASS_CMD_READCHECK_KC; | |
c3963755 | 816 | uint8_t check[] = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
817 | uint8_t read[] = { 0x0c, 0x00, 0x00, 0x00 }; | |
17505ce2 | 818 | |
819 | uint16_t crc = 0; | |
820 | uint8_t cardsize = 0; | |
821 | uint8_t mem = 0; | |
822 | ||
823 | static struct memory_t { | |
824 | int k16; | |
825 | int book; | |
826 | int k2; | |
827 | int lockauth; | |
828 | int keyaccess; | |
c3963755 | 829 | } memory; |
17505ce2 | 830 | |
f71f4deb | 831 | uint8_t resp[ICLASS_BUFFER_SIZE]; |
17505ce2 | 832 | |
44964fd1 | 833 | set_tracing(true); |
c41dd5f9 | 834 | clear_trace(); |
835 | Iso15693InitReader(); | |
c3963755 | 836 | |
c41dd5f9 | 837 | StartCountSspClk(); |
838 | uint32_t start_time = 0; | |
839 | uint32_t eof_time = 0; | |
ece38ef3 | 840 | |
17505ce2 | 841 | while (!BUTTON_PRESS()) { |
842 | ||
39d3ce5d MHS |
843 | WDT_HIT(); |
844 | ||
17505ce2 | 845 | if (!get_tracing()) { |
c3963755 | 846 | DbpString("Trace full"); |
847 | break; | |
848 | } | |
17505ce2 | 849 | |
ece38ef3 | 850 | if (!selectIclassTag(card_data, &eof_time)) continue; |
c41dd5f9 | 851 | |
ece38ef3 | 852 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 853 | if (!sendCmdGetResponseWithRetries(readcheck_cc, sizeof(readcheck_cc), resp, sizeof(resp), 8, 3, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) continue; |
c8dd9b09 | 854 | |
ece38ef3 | 855 | // replay captured auth (cc must not have been updated) |
17505ce2 | 856 | memcpy(check+5, MAC, 4); |
c8dd9b09 | 857 | |
ece38ef3 | 858 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 859 | if (!sendCmdGetResponseWithRetries(check, sizeof(check), resp, sizeof(resp), 4, 5, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { |
c8dd9b09 MHS |
860 | Dbprintf("Error: Authentication Fail!"); |
861 | continue; | |
862 | } | |
863 | ||
39d3ce5d MHS |
864 | //first get configuration block (block 1) |
865 | crc = block_crc_LUT[1]; | |
17505ce2 | 866 | read[1] = 1; |
c8dd9b09 MHS |
867 | read[2] = crc >> 8; |
868 | read[3] = crc & 0xff; | |
869 | ||
ece38ef3 | 870 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 871 | if (!sendCmdGetResponseWithRetries(read, sizeof(read), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { |
c41dd5f9 | 872 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
39d3ce5d | 873 | Dbprintf("Dump config (block 1) failed"); |
c8dd9b09 MHS |
874 | continue; |
875 | } | |
876 | ||
17505ce2 | 877 | mem = resp[5]; |
878 | memory.k16 = (mem & 0x80); | |
879 | memory.book = (mem & 0x20); | |
880 | memory.k2 = (mem & 0x8); | |
881 | memory.lockauth = (mem & 0x2); | |
882 | memory.keyaccess = (mem & 0x1); | |
c8dd9b09 MHS |
883 | |
884 | cardsize = memory.k16 ? 255 : 32; | |
885 | WDT_HIT(); | |
cb29e00a | 886 | //Set card_data to all zeroes, we'll fill it with data |
17505ce2 | 887 | memset(card_data, 0x0, USB_CMD_DATA_SIZE); |
888 | uint8_t failedRead = 0; | |
889 | uint32_t stored_data_length = 0; | |
c8dd9b09 | 890 | //then loop around remaining blocks |
17505ce2 | 891 | for (int block = 0; block < cardsize; block++) { |
892 | read[1] = block; | |
39d3ce5d | 893 | crc = block_crc_LUT[block]; |
c8dd9b09 MHS |
894 | read[2] = crc >> 8; |
895 | read[3] = crc & 0xff; | |
896 | ||
ece38ef3 | 897 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 898 | if (sendCmdGetResponseWithRetries(read, sizeof(read), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { |
c8dd9b09 | 899 | Dbprintf(" %02x: %02x %02x %02x %02x %02x %02x %02x %02x", |
17505ce2 | 900 | block, resp[0], resp[1], resp[2], |
c8dd9b09 MHS |
901 | resp[3], resp[4], resp[5], |
902 | resp[6], resp[7]); | |
903 | ||
cb29e00a | 904 | //Fill up the buffer |
17505ce2 | 905 | memcpy(card_data+stored_data_length, resp, 8); |
cb29e00a | 906 | stored_data_length += 8; |
17505ce2 | 907 | if (stored_data_length +8 > USB_CMD_DATA_SIZE) { |
908 | //Time to send this off and start afresh | |
cb29e00a MHS |
909 | cmd_send(CMD_ACK, |
910 | stored_data_length,//data length | |
911 | failedRead,//Failed blocks? | |
912 | 0,//Not used ATM | |
913 | card_data, stored_data_length); | |
914 | //reset | |
915 | stored_data_length = 0; | |
916 | failedRead = 0; | |
917 | } | |
918 | ||
17505ce2 | 919 | } else { |
cb29e00a | 920 | failedRead = 1; |
17505ce2 | 921 | stored_data_length += 8;//Otherwise, data becomes misaligned |
c8dd9b09 | 922 | Dbprintf("Failed to dump block %d", block); |
c3963755 | 923 | } |
924 | } | |
428d6221 | 925 | |
cb29e00a | 926 | //Send off any remaining data |
17505ce2 | 927 | if (stored_data_length > 0) { |
cb29e00a MHS |
928 | cmd_send(CMD_ACK, |
929 | stored_data_length,//data length | |
930 | failedRead,//Failed blocks? | |
931 | 0,//Not used ATM | |
17505ce2 | 932 | card_data, |
933 | stored_data_length); | |
cb29e00a | 934 | } |
c8dd9b09 MHS |
935 | //If we got here, let's break |
936 | break; | |
c3963755 | 937 | } |
cb29e00a MHS |
938 | //Signal end of transmission |
939 | cmd_send(CMD_ACK, | |
940 | 0,//data length | |
941 | 0,//Failed blocks? | |
942 | 0,//Not used ATM | |
17505ce2 | 943 | card_data, |
944 | 0); | |
cb29e00a | 945 | |
f784539d | 946 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 947 | LED_D_OFF(); |
c3963755 | 948 | LED_A_OFF(); |
949 | } | |
950 | ||
ece38ef3 | 951 | |
952 | void iClass_Check(uint8_t *MAC) { | |
496bb4be | 953 | uint8_t check[9] = {ICLASS_CMD_CHECK_KD, 0x00}; |
ece38ef3 | 954 | uint8_t resp[4]; |
17505ce2 | 955 | memcpy(check+5, MAC, 4); |
c41dd5f9 | 956 | uint32_t eof_time; |
496bb4be | 957 | bool isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, sizeof(resp), 4, 6, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time); |
ece38ef3 | 958 | cmd_send(CMD_ACK, isOK, 0, 0, resp, sizeof(resp)); |
959 | } | |
960 | ||
961 | ||
962 | void iClass_Readcheck(uint8_t block, bool use_credit_key) { | |
963 | uint8_t readcheck[2] = {ICLASS_CMD_READCHECK_KD, block}; | |
964 | if (use_credit_key) { | |
965 | readcheck[0] = ICLASS_CMD_READCHECK_KC; | |
966 | } | |
967 | uint8_t resp[8]; | |
968 | uint32_t eof_time; | |
496bb4be | 969 | bool isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 8, 6, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time); |
ece38ef3 | 970 | cmd_send(CMD_ACK, isOK, 0, 0, resp, sizeof(resp)); |
aa53efc3 | 971 | } |
17505ce2 | 972 | |
ece38ef3 | 973 | |
f784539d | 974 | static bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata) { |
3ac22ee1 | 975 | uint8_t readcmd[] = {ICLASS_CMD_READ_OR_IDENTIFY, blockNo, 0x00, 0x00}; //0x88, 0x00 // can i use 0C? |
976 | char bl = blockNo; | |
977 | uint16_t rdCrc = iclass_crc16(&bl, 1); | |
978 | readcmd[2] = rdCrc >> 8; | |
979 | readcmd[3] = rdCrc & 0xff; | |
c41dd5f9 | 980 | uint8_t resp[10]; |
c41dd5f9 | 981 | uint32_t eof_time; |
ece38ef3 | 982 | |
496bb4be | 983 | bool isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, sizeof(resp), 10, 10, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time); |
3ac22ee1 | 984 | memcpy(readdata, resp, sizeof(resp)); |
fecd8202 | 985 | |
aa53efc3 | 986 | return isOK; |
987 | } | |
fecd8202 | 988 | |
ece38ef3 | 989 | |
3ac22ee1 | 990 | void iClass_ReadBlk(uint8_t blockno) { |
ece38ef3 | 991 | |
992 | LED_A_ON(); | |
993 | ||
3ac22ee1 | 994 | uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0}; |
496bb4be | 995 | bool isOK = iClass_ReadBlock(blockno, readblockdata); |
3ac22ee1 | 996 | cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8); |
f784539d | 997 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 998 | LED_D_OFF(); |
999 | ||
1000 | LED_A_OFF(); | |
aa53efc3 | 1001 | } |
fecd8202 | 1002 | |
496bb4be | 1003 | |
1004 | void iClass_Dump(uint8_t startblock, uint8_t numblks) { | |
ece38ef3 | 1005 | |
1006 | LED_A_ON(); | |
1007 | ||
496bb4be | 1008 | uint8_t readblockdata[USB_CMD_DATA_SIZE+2] = {0}; |
aa53efc3 | 1009 | bool isOK = false; |
496bb4be | 1010 | uint16_t blkCnt = 0; |
fecd8202 | 1011 | |
496bb4be | 1012 | if (numblks > USB_CMD_DATA_SIZE / 8) { |
1013 | numblks = USB_CMD_DATA_SIZE / 8; | |
aa53efc3 | 1014 | } |
496bb4be | 1015 | |
1016 | for (blkCnt = 0; blkCnt < numblks; blkCnt++) { | |
1017 | isOK = iClass_ReadBlock(startblock+blkCnt, readblockdata+8*blkCnt); | |
1018 | if (!isOK) { | |
1019 | Dbprintf("Block %02X failed to read", startblock+blkCnt); | |
1020 | break; | |
fecd8202 | 1021 | } |
aa53efc3 | 1022 | } |
ece38ef3 | 1023 | |
496bb4be | 1024 | cmd_send(CMD_ACK, isOK, blkCnt, 0, readblockdata, blkCnt*8); |
ece38ef3 | 1025 | |
1026 | LED_A_OFF(); | |
aa53efc3 | 1027 | } |
1028 | ||
ece38ef3 | 1029 | |
17505ce2 | 1030 | static bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) { |
ece38ef3 | 1031 | |
496bb4be | 1032 | uint8_t write[16] = {ICLASS_CMD_UPDATE, blockNo}; |
aa53efc3 | 1033 | memcpy(write+2, data, 12); // data + mac |
496bb4be | 1034 | AppendCrc(write+1, 13); |
c41dd5f9 | 1035 | uint8_t resp[10]; |
671ff89f | 1036 | bool isOK = false; |
c41dd5f9 | 1037 | uint32_t eof_time = 0; |
ece38ef3 | 1038 | |
496bb4be | 1039 | isOK = sendCmdGetResponseWithRetries(write, sizeof(write), resp, sizeof(resp), 10, 10, 0, ICLASS_READER_TIMEOUT_UPDATE, &eof_time); |
1040 | if (isOK && blockNo != 3 && blockNo != 4 && memcmp(write+2, resp, 8)) { // check response | |
1041 | isOK = false; | |
fecd8202 | 1042 | } |
ece38ef3 | 1043 | |
aa53efc3 | 1044 | return isOK; |
1045 | } | |
1046 | ||
ece38ef3 | 1047 | |
3ac22ee1 | 1048 | void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) { |
ece38ef3 | 1049 | |
1050 | LED_A_ON(); | |
1051 | ||
3ac22ee1 | 1052 | bool isOK = iClass_WriteBlock_ext(blockNo, data); |
496bb4be | 1053 | if (isOK) { |
17505ce2 | 1054 | Dbprintf("Write block [%02x] successful", blockNo); |
aa53efc3 | 1055 | } else { |
17505ce2 | 1056 | Dbprintf("Write block [%02x] failed", blockNo); |
aa53efc3 | 1057 | } |
17505ce2 | 1058 | cmd_send(CMD_ACK, isOK, 0, 0, 0, 0); |
ece38ef3 | 1059 | |
f784539d | 1060 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 1061 | LED_D_OFF(); |
1062 | ||
1063 | LED_A_OFF(); | |
aa53efc3 | 1064 | } |
1065 | ||
496bb4be | 1066 | |
3ac22ee1 | 1067 | void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) { |
aa53efc3 | 1068 | int i; |
1069 | int written = 0; | |
1070 | int total_block = (endblock - startblock) + 1; | |
17505ce2 | 1071 | for (i = 0; i < total_block; i++) { |
aa53efc3 | 1072 | // block number |
17505ce2 | 1073 | if (iClass_WriteBlock_ext(i+startblock, data + (i*12))){ |
1074 | Dbprintf("Write block [%02x] successful", i + startblock); | |
aa53efc3 | 1075 | written++; |
1076 | } else { | |
17505ce2 | 1077 | if (iClass_WriteBlock_ext(i+startblock, data + (i*12))){ |
1078 | Dbprintf("Write block [%02x] successful", i + startblock); | |
aa53efc3 | 1079 | written++; |
1080 | } else { | |
17505ce2 | 1081 | Dbprintf("Write block [%02x] failed", i + startblock); |
aa53efc3 | 1082 | } |
1083 | } | |
1084 | } | |
1085 | if (written == total_block) | |
1086 | Dbprintf("Clone complete"); | |
1087 | else | |
17505ce2 | 1088 | Dbprintf("Clone incomplete"); |
aa53efc3 | 1089 | |
17505ce2 | 1090 | cmd_send(CMD_ACK, 1, 0, 0, 0, 0); |
aa53efc3 | 1091 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 1092 | LED_D_OFF(); |
1093 | LED_A_OFF(); | |
aa53efc3 | 1094 | } |