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