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a9968da3 | 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 Noralsy tag commands | |
b9957414 | 8 | // ASK/Manchester, STT, RF/32, 96 bits long (some bits unknown) |
a9968da3 | 9 | //----------------------------------------------------------------------------- |
10 | #include "cmdlfnoralsy.h" | |
11 | #include <string.h> | |
12 | #include <inttypes.h> | |
13 | #include <math.h> | |
14 | #include "proxmark3.h" | |
15 | #include "ui.h" | |
16 | #include "util.h" | |
17 | #include "graph.h" | |
18 | #include "cmdparser.h" | |
19 | #include "cmddata.h" | |
20 | #include "cmdmain.h" | |
21 | #include "cmdlf.h" | |
22 | #include "protocols.h" // for T55xx config register definitions | |
23 | #include "lfdemod.h" // parityTest | |
24 | ||
25 | static int CmdHelp(const char *Cmd); | |
26 | ||
27 | int usage_lf_noralsy_clone(void){ | |
28 | PrintAndLog("clone a Noralsy tag to a T55x7 tag."); | |
29 | PrintAndLog("Usage: lf noralsy clone [h] <card id> <year> <Q5>"); | |
30 | PrintAndLog("Options:"); | |
31 | PrintAndLog(" h : This help"); | |
32 | PrintAndLog(" <card id> : Noralsy card ID"); | |
33 | PrintAndLog(" <year> : Tag allocation year"); | |
34 | PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)"); | |
35 | PrintAndLog(""); | |
36 | PrintAndLog("Sample: lf noralsy clone 112233"); | |
37 | return 0; | |
38 | } | |
39 | ||
40 | int usage_lf_noralsy_sim(void) { | |
41 | PrintAndLog("Enables simulation of Noralsy card with specified card number."); | |
42 | PrintAndLog("Simulation runs until the button is pressed or another USB command is issued."); | |
43 | PrintAndLog(""); | |
44 | PrintAndLog("Usage: lf noralsy sim [h] <card id> <year>"); | |
45 | PrintAndLog("Options:"); | |
46 | PrintAndLog(" h : This help"); | |
47 | PrintAndLog(" <card id> : Noralsy card ID"); | |
48 | PrintAndLog(" <year> : Tag allocation year"); | |
49 | PrintAndLog(""); | |
50 | PrintAndLog("Sample: lf noralsy sim 112233"); | |
51 | return 0; | |
52 | } | |
53 | ||
54 | static uint8_t noralsy_chksum( uint8_t* bits, uint8_t len) { | |
55 | uint8_t sum = 0; | |
56 | for (uint8_t i = 0; i < len; i += 4) | |
57 | sum ^= bytebits_to_byte(bits+i, 4); | |
58 | return sum & 0x0F ; | |
59 | } | |
60 | int getnoralsyBits(uint32_t id, uint16_t year, uint8_t *bits) { | |
61 | //preamp | |
62 | num_to_bytebits(0xBB0214FF, 32, bits); // --> Have seen 0xBB0214FF / 0xBB0314FF UNKNOWN | |
63 | ||
64 | year &= 0xFF; | |
65 | ||
66 | uint16_t sub1 = (id & 0xFFF0000) >> 16; | |
67 | uint8_t sub2 = (id & 0x000FF00) >> 8; | |
68 | uint8_t sub3 = (id & 0x00000FF); | |
69 | ||
70 | num_to_bytebits(sub1, 12, bits+32); | |
71 | num_to_bytebits(year, 8, bits+44); | |
72 | num_to_bytebits(0, 4, bits+52); // --> UNKNOWN. Flag? | |
73 | ||
74 | num_to_bytebits(sub2, 8, bits+56); | |
75 | num_to_bytebits(sub3, 8, bits+64); | |
76 | ||
77 | //chksum byte | |
78 | uint8_t chksum = noralsy_chksum(bits+32, 40); | |
79 | num_to_bytebits(chksum, 4, bits+72); | |
80 | chksum = noralsy_chksum(bits, 76); | |
81 | num_to_bytebits(chksum, 4, bits+76); | |
82 | return 1; | |
83 | } | |
84 | ||
85 | // by iceman | |
86 | // find Noralsy preamble in already demoded data | |
87 | int NoralsyDemod_AM(uint8_t *dest, size_t *size) { | |
88 | if (*size < 96) return -1; //make sure buffer has data | |
89 | size_t startIdx = 0; | |
90 | uint8_t preamble[] = {1,0,1,1,1,0,1,1,0,0,0,0}; | |
91 | if (!preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx)) | |
92 | return -2; //preamble not found | |
93 | if (*size != 96) return -3; //wrong demoded size | |
94 | //return start position | |
95 | return (int)startIdx; | |
96 | } | |
97 | ||
98 | /* | |
99 | * | |
100 | * 2520116 | BB0214FF2529900116360000 | 10111011 00000011 00010100 11111111 00100101 00101001 10010000 00000001 00010110 00110110 00000000 00000000 | |
b9957414 | 101 | * aaa*aaaaiiiYY*iiiicc---- **** iiiiiiii iiiiYYYY YYYY**** iiiiiiii iiiiiiii cccccccc |
a9968da3 | 102 | * |
b9957414 | 103 | * a = fixed value BB0*14FF |
a9968da3 | 104 | * i = printed id, BCD-format |
105 | * Y = year | |
106 | * c = checksum | |
b9957414 | 107 | * * = unknown |
108 | * | |
a9968da3 | 109 | **/ |
110 | ||
111 | //see ASKDemod for what args are accepted | |
112 | int CmdNoralsyDemod(const char *Cmd) { | |
113 | ||
114 | //ASK / Manchester | |
b97311b1 | 115 | bool st = true; |
199c74a4 | 116 | if (!ASKDemod_ext("32 0 0", false, false, 1, &st)) { |
a9968da3 | 117 | if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: ASK/Manchester Demod failed"); |
118 | return 0; | |
119 | } | |
c3caf040 | 120 | if (!st) return 0; |
121 | ||
a9968da3 | 122 | size_t size = DemodBufferLen; |
123 | int ans = NoralsyDemod_AM(DemodBuffer, &size); | |
124 | if (ans < 0){ | |
125 | if (g_debugMode){ | |
126 | if (ans == -1) | |
127 | PrintAndLog("DEBUG: Error - Noralsy: too few bits found"); | |
128 | else if (ans == -2) | |
129 | PrintAndLog("DEBUG: Error - Noralsy: preamble not found"); | |
130 | else if (ans == -3) | |
131 | PrintAndLog("DEBUG: Error - Noralsy: Size not correct: %d", size); | |
132 | else | |
133 | PrintAndLog("DEBUG: Error - Noralsy: ans: %d", ans); | |
134 | } | |
135 | return 0; | |
136 | } | |
137 | setDemodBuf(DemodBuffer, 96, ans); | |
9fe4507c | 138 | setClockGrid(g_DemodClock, g_DemodStartIdx + (ans*g_DemodClock)); |
a9968da3 | 139 | //setGrid_Clock(32); |
140 | ||
141 | //got a good demod | |
142 | uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32); | |
143 | uint32_t raw2 = bytebits_to_byte(DemodBuffer+32, 32); | |
144 | uint32_t raw3 = bytebits_to_byte(DemodBuffer+64, 32); | |
145 | ||
146 | uint32_t cardid = (bytebits_to_byte(DemodBuffer+32, 12)<<16) | bytebits_to_byte(DemodBuffer+32+24, 16); | |
147 | ||
148 | uint16_t year = (raw2 & 0x000ff000) >> 12; | |
149 | year += ( year > 0x60 ) ? 0x1900: 0x2000; | |
150 | ||
151 | // calc checksums | |
152 | uint8_t calc1 = noralsy_chksum(DemodBuffer+32, 40); | |
153 | uint8_t calc2 = noralsy_chksum(DemodBuffer, 76); | |
154 | uint8_t chk1 = 0, chk2 = 0; | |
155 | chk1 = bytebits_to_byte(DemodBuffer+72, 4); | |
156 | chk2 = bytebits_to_byte(DemodBuffer+76, 4); | |
157 | // test checksums | |
158 | if ( chk1 != calc1 ) { | |
159 | if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: checksum 1 failed %x - %x\n", chk1, calc1); | |
160 | return 0; | |
161 | } | |
162 | if ( chk2 != calc2 ) { | |
163 | if (g_debugMode) PrintAndLog("DEBUG: Error - Noralsy: checksum 2 failed %x - %x\n", chk2, calc2); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | PrintAndLog("Noralsy Tag Found: Card ID %X, Year: %X Raw: %08X%08X%08X", cardid, year, raw1 ,raw2, raw3); | |
168 | if (raw1 != 0xBB0214FF) { | |
169 | PrintAndLog("Unknown bits set in first block! Expected 0xBB0214FF, Found: 0x%08X", raw1); | |
170 | PrintAndLog("Please post this output in forum to further research on this format"); | |
171 | } | |
172 | return 1; | |
173 | } | |
174 | ||
175 | int CmdNoralsyRead(const char *Cmd) { | |
b9957414 | 176 | lf_read(true, 8000); |
a9968da3 | 177 | return CmdNoralsyDemod(Cmd); |
178 | } | |
179 | ||
180 | int CmdNoralsyClone(const char *Cmd) { | |
181 | ||
182 | uint16_t year = 0; | |
183 | uint32_t id = 0; | |
184 | uint32_t blocks[4] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | T55x7_ST_TERMINATOR | 3 << T55x7_MAXBLOCK_SHIFT, 0, 0}; | |
185 | uint8_t bits[96]; | |
186 | uint8_t *bs = bits; | |
187 | memset(bs, 0, sizeof(bits)); | |
188 | ||
189 | char cmdp = param_getchar(Cmd, 0); | |
190 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_clone(); | |
191 | ||
192 | id = param_get32ex(Cmd, 0, 0, 16); | |
193 | year = param_get32ex(Cmd, 1, 2000, 16); | |
194 | ||
195 | //Q5 | |
196 | if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') { | |
197 | //t5555 (Q5) BITRATE = (RF-2)/2 (iceman) | |
198 | blocks[0] = T5555_MODULATION_MANCHESTER | ((32-2)>>1) << T5555_BITRATE_SHIFT | T5555_ST_TERMINATOR | 3 << T5555_MAXBLOCK_SHIFT; | |
199 | } | |
200 | ||
201 | if ( !getnoralsyBits(id, year, bs)) { | |
202 | PrintAndLog("Error with tag bitstream generation."); | |
203 | return 1; | |
204 | } | |
205 | ||
206 | // | |
207 | blocks[1] = bytebits_to_byte(bs,32); | |
208 | blocks[2] = bytebits_to_byte(bs+32,32); | |
209 | blocks[3] = bytebits_to_byte(bs+64,32); | |
210 | ||
211 | PrintAndLog("Preparing to clone Noralsy to T55x7 with CardId: %x", id); | |
212 | PrintAndLog("Blk | Data "); | |
213 | PrintAndLog("----+------------"); | |
214 | PrintAndLog(" 00 | 0x%08x", blocks[0]); | |
215 | PrintAndLog(" 01 | 0x%08x", blocks[1]); | |
216 | PrintAndLog(" 02 | 0x%08x", blocks[2]); | |
217 | PrintAndLog(" 03 | 0x%08x", blocks[3]); | |
218 | ||
219 | UsbCommand resp; | |
220 | UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; | |
221 | ||
222 | for (int i = 3; i >= 0; --i) { | |
223 | c.arg[0] = blocks[i]; | |
224 | c.arg[1] = i; | |
225 | clearCommandBuffer(); | |
226 | SendCommand(&c); | |
227 | if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){ | |
228 | PrintAndLog("Error occurred, device did not respond during write operation."); | |
229 | return -1; | |
230 | } | |
231 | } | |
232 | return 0; | |
233 | } | |
234 | ||
235 | int CmdNoralsySim(const char *Cmd) { | |
236 | ||
237 | uint8_t bits[96]; | |
238 | uint8_t *bs = bits; | |
239 | memset(bs, 0, sizeof(bits)); | |
240 | ||
241 | uint16_t year = 0; | |
242 | uint32_t id = 0; | |
243 | ||
244 | char cmdp = param_getchar(Cmd, 0); | |
245 | if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_noralsy_sim(); | |
246 | ||
247 | id = param_get32ex(Cmd, 0, 0, 16); | |
248 | year = param_get32ex(Cmd, 1, 2000, 16); | |
249 | ||
250 | uint8_t clk = 32, encoding = 1, separator = 1, invert = 0; | |
251 | uint16_t arg1, arg2; | |
252 | size_t size = 96; | |
253 | arg1 = clk << 8 | encoding; | |
254 | arg2 = invert << 8 | separator; | |
255 | ||
256 | if ( !getnoralsyBits(id, year, bs)) { | |
257 | PrintAndLog("Error with tag bitstream generation."); | |
258 | return 1; | |
259 | } | |
260 | ||
261 | PrintAndLog("Simulating Noralsy - CardId: %x", id); | |
262 | ||
263 | UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}}; | |
264 | memcpy(c.d.asBytes, bs, size); | |
265 | clearCommandBuffer(); | |
266 | SendCommand(&c); | |
267 | return 0; | |
268 | } | |
269 | ||
270 | static command_t CommandTable[] = { | |
271 | {"help", CmdHelp, 1, "This help"}, | |
272 | {"demod", CmdNoralsyDemod,1, "Attempt to read and extract tag data from the GraphBuffer"}, | |
273 | {"read", CmdNoralsyRead, 0, "Attempt to read and extract tag data from the antenna"}, | |
274 | {"clone", CmdNoralsyClone,0, "clone Noralsy tag"}, | |
275 | {"sim", CmdNoralsySim, 0, "simulate Noralsy tag"}, | |
276 | {NULL, NULL, 0, NULL} | |
277 | }; | |
278 | ||
279 | int CmdLFNoralsy(const char *Cmd) { | |
280 | clearCommandBuffer(); | |
281 | CmdsParse(CommandTable, Cmd); | |
282 | return 0; | |
283 | } | |
284 | ||
285 | int CmdHelp(const char *Cmd) { | |
286 | CmdsHelp(CommandTable); | |
287 | return 0; | |
288 | } |