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4db6f3bb | 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 fdx-b tag commands | |
b9957414 | 8 | // Differential Biphase, rf/32, 128 bits (known) |
4db6f3bb | 9 | //----------------------------------------------------------------------------- |
10 | ||
11 | #include "cmdlffdx.h" | |
12 | ||
3e8c61a5 | 13 | #include <stdio.h> |
4db6f3bb | 14 | #include <inttypes.h> |
3e8c61a5 | 15 | #include <string.h> |
4db6f3bb | 16 | #include "proxmark3.h" |
17 | #include "ui.h" // for PrintAndLog | |
18 | #include "util.h" | |
19 | #include "cmdparser.h" | |
20 | #include "cmddata.h" | |
21 | #include "cmdmain.h" | |
22 | #include "cmdlf.h" | |
23 | #include "crc16.h" | |
24 | #include "protocols.h" | |
25 | #include "lfdemod.h" | |
26 | ||
27 | /* | |
28 | FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits) | |
29 | 8 databits + 1 parity (1) | |
30 | CIITT 16 checksum | |
31 | NATIONAL CODE, ICAR database | |
32 | COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf | |
33 | FLAG (animal/non-animal) | |
34 | ||
35 | 38 IDbits | |
36 | 10 country code | |
37 | 1 extra app bit | |
38 | 14 reserved bits | |
39 | 1 animal bit | |
40 | 16 ccitt CRC chksum over 64bit ID CODE. | |
41 | 24 appli bits. | |
42 | ||
43 | sample: 985121004515220 [ 37FF65B88EF94 ] | |
44 | */ | |
45 | ||
46 | static int CmdHelp(const char *Cmd); | |
47 | ||
48 | int usage_lf_fdx_clone(void){ | |
49 | PrintAndLog("Clone a FDX-B animal tag to a T55x7 tag."); | |
bf824347 | 50 | PrintAndLog("Usage: lf fdx clone [h] <country id> <animal id> <Q5>"); |
4db6f3bb | 51 | PrintAndLog("Options:"); |
52 | PrintAndLog(" h : This help"); | |
53 | PrintAndLog(" <country id> : Country id"); | |
54 | PrintAndLog(" <animal id> : Animal id"); | |
55 | // has extended data? | |
56 | //reserved/rfu | |
57 | //is animal tag | |
58 | // extended data | |
59 | PrintAndLog(" <Q5> : Specify write to Q5 (t5555 instead of t55x7)"); | |
60 | PrintAndLog(""); | |
61 | PrintAndLog("Sample: lf animal clone 999 112233"); | |
62 | return 0; | |
63 | } | |
64 | ||
65 | int usage_lf_fdx_sim(void) { | |
66 | PrintAndLog("Enables simulation of FDX-B animal tag"); | |
67 | PrintAndLog("Simulation runs until the button is pressed or another USB command is issued."); | |
68 | PrintAndLog(""); | |
bf824347 | 69 | PrintAndLog("Usage: lf fdx sim [h] <country id> <animal id>"); |
4db6f3bb | 70 | PrintAndLog("Options:"); |
71 | PrintAndLog(" h : This help"); | |
72 | PrintAndLog(" <country id> : Country ID"); | |
73 | PrintAndLog(" <animal id> : Animal ID"); | |
74 | PrintAndLog(""); | |
bf824347 | 75 | PrintAndLog("Sample: lf fdx sim 999 112233"); |
4db6f3bb | 76 | return 0; |
77 | } | |
78 | // clearing the topbit needed for the preambl detection. | |
79 | static void verify_values(uint32_t countryid, uint64_t animalid){ | |
80 | if ((animalid & 0x3FFFFFFFFF) != animalid) { | |
81 | animalid &= 0x3FFFFFFFFF; | |
82 | PrintAndLog("Animal ID Truncated to 38bits: %"PRIx64, animalid); | |
83 | } | |
84 | if ( (countryid & 0x3ff) != countryid ) { | |
85 | countryid &= 0x3ff; | |
86 | PrintAndLog("Country ID Truncated to 10bits: %03d", countryid); | |
87 | } | |
88 | } | |
89 | ||
90 | int getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) { | |
91 | ||
92 | // 128bits | |
93 | // every 9th bit is 0x01, but we can just fill the rest with 0x01 and overwrite | |
94 | memset(bits, 0x01, 128); | |
95 | ||
96 | // add preamble ten 0x00 and one 0x01 | |
97 | memset(bits, 0x00, 10); | |
98 | ||
99 | // add reserved | |
100 | num_to_bytebitsLSBF(0x00, 7, bits + 66); | |
101 | num_to_bytebitsLSBF(0x00 >> 7, 7, bits + 74); | |
102 | ||
103 | // add animal flag - OK | |
104 | bits[65] = isanimal; | |
105 | ||
106 | // add extended flag - OK | |
107 | bits[81] = isextended; | |
108 | ||
109 | // add national code 40bits - OK | |
110 | num_to_bytebitsLSBF(national_id >> 0, 8, bits+11); | |
111 | num_to_bytebitsLSBF(national_id >> 8, 8, bits+20); | |
112 | num_to_bytebitsLSBF(national_id >> 16, 8, bits+29); | |
113 | num_to_bytebitsLSBF(national_id >> 24, 8, bits+38); | |
114 | num_to_bytebitsLSBF(national_id >> 32, 6, bits+47); | |
115 | ||
116 | // add country code - OK | |
117 | num_to_bytebitsLSBF(country >> 0, 2, bits+53); | |
118 | num_to_bytebitsLSBF(country >> 2, 8, bits+56); | |
119 | ||
120 | // add crc-16 - OK | |
121 | uint8_t raw[8]; | |
122 | for (uint8_t i=0; i<8; ++i) | |
123 | raw[i] = bytebits_to_byte(bits + 11 + i * 9, 8); | |
124 | ||
125 | uint16_t crc = crc16_ccitt_kermit(raw, 8); | |
126 | num_to_bytebitsLSBF(crc >> 0, 8, bits+83); | |
127 | num_to_bytebitsLSBF(crc >> 8, 8, bits+92); | |
128 | ||
129 | // extended data - OK | |
130 | num_to_bytebitsLSBF( extended >> 0 , 8, bits+101); | |
131 | num_to_bytebitsLSBF( extended >> 8 , 8, bits+110); | |
132 | num_to_bytebitsLSBF( extended >> 16, 8, bits+119); | |
133 | return 1; | |
134 | } | |
135 | ||
136 | int CmdFdxDemod(const char *Cmd){ | |
137 | ||
138 | //Differential Biphase / di-phase (inverted biphase) | |
139 | //get binary from ask wave | |
3e8c61a5 | 140 | if (!ASKbiphaseDemod("0 32 1 0", false)) { |
4db6f3bb | 141 | if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B ASKbiphaseDemod failed"); |
142 | return 0; | |
143 | } | |
144 | size_t size = DemodBufferLen; | |
145 | int preambleIndex = FDXBdemodBI(DemodBuffer, &size); | |
146 | if (preambleIndex < 0){ | |
147 | if (g_debugMode){ | |
148 | if (preambleIndex == -1) | |
149 | PrintAndLog("DEBUG: Error - FDX-B too few bits found"); | |
150 | else if (preambleIndex == -2) | |
151 | PrintAndLog("DEBUG: Error - FDX-B preamble not found"); | |
152 | else if (preambleIndex == -3) | |
153 | PrintAndLog("DEBUG: Error - FDX-B Size not correct: %d", size); | |
154 | else | |
155 | PrintAndLog("DEBUG: Error - FDX-B ans: %d", preambleIndex); | |
156 | } | |
157 | return 0; | |
158 | } | |
159 | ||
160 | // set and leave DemodBuffer intact | |
161 | setDemodBuf(DemodBuffer, 128, preambleIndex); | |
9fe4507c | 162 | setClockGrid(g_DemodClock, g_DemodStartIdx + (preambleIndex*g_DemodClock)); |
163 | ||
4db6f3bb | 164 | uint8_t bits_no_spacer[117]; |
165 | memcpy(bits_no_spacer, DemodBuffer + 11, 117); | |
166 | ||
167 | // remove marker bits (1's every 9th digit after preamble) (pType = 2) | |
168 | size = removeParity(bits_no_spacer, 0, 9, 2, 117); | |
169 | if ( size != 104 ) { | |
170 | if (g_debugMode) PrintAndLog("DEBUG: Error removeParity:: %d", size); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | //got a good demod | |
175 | uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(bits_no_spacer+32,6)) << 32) | bytebits_to_byteLSBF(bits_no_spacer,32); | |
176 | uint32_t countryCode = bytebits_to_byteLSBF(bits_no_spacer+38,10); | |
177 | uint8_t dataBlockBit = bits_no_spacer[48]; | |
178 | uint32_t reservedCode = bytebits_to_byteLSBF(bits_no_spacer+49,14); | |
179 | uint8_t animalBit = bits_no_spacer[63]; | |
180 | uint32_t crc16 = bytebits_to_byteLSBF(bits_no_spacer+64,16); | |
181 | uint32_t extended = bytebits_to_byteLSBF(bits_no_spacer+80,24); | |
182 | ||
183 | uint64_t rawid = ((uint64_t)bytebits_to_byte(bits_no_spacer,32)<<32) | bytebits_to_byte(bits_no_spacer+32,32); | |
184 | uint8_t raw[8]; | |
185 | num_to_bytes(rawid, 8, raw); | |
186 | ||
187 | if (g_debugMode) { | |
188 | PrintAndLog("DEBUG: bits_no_spacer:\n%s",sprint_bin_break(bits_no_spacer,size,16)); | |
189 | PrintAndLog("DEBUG: Start marker %d; Size %d", preambleIndex, size); | |
190 | PrintAndLog("DEBUG: Raw ID Hex: %s", sprint_hex(raw,8)); | |
191 | } | |
192 | ||
193 | uint16_t calcCrc = crc16_ccitt_kermit(raw, 8); | |
194 | PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:"); | |
195 | PrintAndLog("Animal ID: %04u-%012" PRIu64, countryCode, NationalCode); | |
196 | PrintAndLog("National Code: %012" PRIu64, NationalCode); | |
197 | PrintAndLog("CountryCode: %04u", countryCode); | |
198 | PrintAndLog("Reserved Code: %u", reservedCode); | |
199 | PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False"); | |
200 | PrintAndLog("Has Extended: %s [0x%X]", dataBlockBit ? "True" : "False", extended); | |
201 | PrintAndLog("CRC: 0x%04X - 0x%04X - [%s]\n", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed"); | |
202 | ||
203 | // set block 0 for later | |
204 | //g_DemodConfig = T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT; | |
205 | return 1; | |
206 | } | |
207 | ||
208 | int CmdFdxRead(const char *Cmd) { | |
b9957414 | 209 | lf_read(true, 10000); |
4db6f3bb | 210 | return CmdFdxDemod(Cmd); |
211 | } | |
212 | ||
213 | int CmdFdxClone(const char *Cmd) { | |
214 | ||
215 | uint32_t countryid = 0; | |
216 | uint64_t animalid = 0; | |
217 | uint32_t blocks[5] = {T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0}; | |
218 | uint8_t bits[128]; | |
219 | uint8_t *bs = bits; | |
220 | memset(bs, 0, sizeof(bits)); | |
221 | ||
222 | char cmdp = param_getchar(Cmd, 0); | |
223 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_clone(); | |
224 | ||
225 | countryid = param_get32ex(Cmd, 0, 0, 10); | |
226 | animalid = param_get64ex(Cmd, 1, 0, 10); | |
227 | ||
228 | //Q5 | |
229 | if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') { | |
230 | //t5555 (Q5) BITRATE = (RF-2)/2 (iceman) | |
231 | blocks[0] = T5555_MODULATION_BIPHASE | T5555_INVERT_OUTPUT | ((32-2)>>1) << T5555_BITRATE_SHIFT | 4 << T5555_MAXBLOCK_SHIFT; | |
232 | } | |
233 | ||
234 | verify_values(countryid, animalid); | |
235 | ||
236 | // getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) | |
237 | if ( !getFDXBits(animalid, countryid, 1, 0, 0, bs)) { | |
238 | PrintAndLog("Error with tag bitstream generation."); | |
239 | return 1; | |
240 | } | |
241 | ||
242 | // convert from bit stream to block data | |
243 | blocks[1] = bytebits_to_byte(bs,32); | |
244 | blocks[2] = bytebits_to_byte(bs+32,32); | |
245 | blocks[3] = bytebits_to_byte(bs+64,32); | |
246 | blocks[4] = bytebits_to_byte(bs+96,32); | |
247 | ||
248 | PrintAndLog("Preparing to clone FDX-B to T55x7 with animal ID: %04u-%"PRIu64, countryid, animalid); | |
249 | PrintAndLog("Blk | Data "); | |
250 | PrintAndLog("----+------------"); | |
251 | PrintAndLog(" 00 | 0x%08x", blocks[0]); | |
252 | PrintAndLog(" 01 | 0x%08x", blocks[1]); | |
253 | PrintAndLog(" 02 | 0x%08x", blocks[2]); | |
254 | PrintAndLog(" 03 | 0x%08x", blocks[3]); | |
255 | PrintAndLog(" 04 | 0x%08x", blocks[4]); | |
256 | ||
257 | UsbCommand resp; | |
258 | UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; | |
259 | ||
260 | for (int i = 4; i >= 0; --i) { | |
261 | c.arg[0] = blocks[i]; | |
262 | c.arg[1] = i; | |
263 | clearCommandBuffer(); | |
264 | SendCommand(&c); | |
265 | if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){ | |
266 | PrintAndLog("Error occurred, device did not respond during write operation."); | |
267 | return -1; | |
268 | } | |
269 | } | |
270 | return 0; | |
271 | } | |
272 | ||
273 | int CmdFdxSim(const char *Cmd) { | |
274 | uint32_t countryid = 0; | |
275 | uint64_t animalid = 0; | |
276 | ||
277 | char cmdp = param_getchar(Cmd, 0); | |
278 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_sim(); | |
279 | ||
280 | countryid = param_get32ex(Cmd, 0, 0, 10); | |
281 | animalid = param_get64ex(Cmd, 1, 0, 10); | |
282 | ||
283 | verify_values(countryid, animalid); | |
284 | ||
285 | uint8_t clk = 32, encoding = 2, separator = 0, invert = 1; | |
286 | uint16_t arg1, arg2; | |
287 | size_t size = 128; | |
288 | arg1 = clk << 8 | encoding; | |
289 | arg2 = invert << 8 | separator; | |
290 | ||
291 | PrintAndLog("Simulating FDX-B animal ID: %04u-%"PRIu64, countryid, animalid); | |
292 | ||
293 | UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}}; | |
294 | ||
295 | //getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) | |
296 | getFDXBits(animalid, countryid, 1, 0, 0, c.d.asBytes); | |
297 | clearCommandBuffer(); | |
298 | SendCommand(&c); | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static command_t CommandTable[] = { | |
303 | {"help", CmdHelp, 1, "This help"}, | |
304 | {"demod", CmdFdxDemod,1, "Attempt to extract FDX-B ISO11784/85 data from the GraphBuffer"}, | |
305 | {"read", CmdFdxRead, 0, "Attempt to read and extract FDX-B ISO11784/85 data"}, | |
306 | {"clone", CmdFdxClone,0, "Clone animal ID tag to T55x7 (or to q5/T5555)"}, | |
307 | {"sim", CmdFdxSim, 0, "Animal ID tag simulator"}, | |
308 | {NULL, NULL, 0, NULL} | |
309 | }; | |
310 | ||
311 | int CmdLFFdx(const char *Cmd) { | |
312 | clearCommandBuffer(); | |
313 | CmdsParse(CommandTable, Cmd); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | int CmdHelp(const char *Cmd) { | |
318 | CmdsHelp(CommandTable); | |
319 | return 0; | |
320 | } |