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db25599d | 1 | //----------------------------------------------------------------------------- |
2 | // Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure | |
3 | // | |
4 | // cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com> | |
5 | // | |
6 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, | |
7 | // at your option, any later version. See the LICENSE.txt file for the text of | |
8 | // the license. | |
9 | //----------------------------------------------------------------------------- | |
10 | // Low frequency AWID26 commands | |
11 | //----------------------------------------------------------------------------- | |
12 | ||
13 | #include <stdio.h> // sscanf | |
14 | #include "proxmark3.h" // Definitions, USB controls, etc | |
15 | #include "ui.h" // PrintAndLog | |
16 | #include "cmdparser.h" // CmdsParse, CmdsHelp | |
17 | #include "cmdlfawid.h" // AWID function declarations | |
18 | #include "lfdemod.h" // parityTest | |
a126332a | 19 | #include "util.h" // weigandparity |
20 | #include "protocols.h" // for T55xx config register definitions | |
7838f4be | 21 | #include "cmdmain.h" |
978920b9 | 22 | #include "sleep.h" |
508b37ba | 23 | |
db25599d | 24 | static int CmdHelp(const char *Cmd); |
25 | ||
db25599d | 26 | int usage_lf_awid_fskdemod(void) { |
a126332a | 27 | PrintAndLog("Enables AWID26 compatible reader mode printing details of scanned AWID26 tags."); |
28 | PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued."); | |
29 | PrintAndLog("If the ['1'] option is provided, reader mode is exited after reading a single AWID26 card."); | |
30 | PrintAndLog(""); | |
31 | PrintAndLog("Usage: lf awid fskdemod ['1']"); | |
32 | PrintAndLog("Options :"); | |
33 | PrintAndLog(" 1 : (optional) stop after reading a single card"); | |
34 | PrintAndLog(""); | |
35 | PrintAndLog("Samples : lf awid fskdemod"); | |
36 | PrintAndLog(" : lf awid fskdemod 1"); | |
37 | return 0; | |
db25599d | 38 | } |
39 | ||
40 | int usage_lf_awid_sim(void) { | |
a126332a | 41 | PrintAndLog("Enables simulation of AWID26 card with specified facility-code and card number."); |
42 | PrintAndLog("Simulation runs until the button is pressed or another USB command is issued."); | |
43 | PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated."); | |
44 | PrintAndLog(""); | |
45 | PrintAndLog("Usage: lf awid sim <Facility-Code> <Card-Number>"); | |
46 | PrintAndLog("Options :"); | |
47 | PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code"); | |
48 | PrintAndLog(" <Card Number> : 16-bit value AWID card number"); | |
49 | PrintAndLog(""); | |
50 | PrintAndLog("Sample : lf awid sim 224 1337"); | |
51 | return 0; | |
db25599d | 52 | } |
53 | ||
54 | int usage_lf_awid_clone(void) { | |
a126332a | 55 | PrintAndLog("Enables cloning of AWID26 card with specified facility-code and card number onto T55x7."); |
56 | PrintAndLog("The T55x7 must be on the antenna when issuing this command. T55x7 blocks are calculated and printed in the process."); | |
57 | PrintAndLog("Per AWID26 format, the facility-code is 8-bit and the card number is 16-bit. Larger values are truncated."); | |
58 | PrintAndLog(""); | |
59 | PrintAndLog("Usage: lf awid clone <Facility-Code> <Card-Number>"); | |
60 | PrintAndLog("Options :"); | |
508b37ba | 61 | PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code"); |
a126332a | 62 | PrintAndLog(" <Card Number> : 16-bit value AWID card number"); |
63 | PrintAndLog(" Q5 : optional - clone to Q5 (T5555) instead of T55x7 chip"); | |
64 | PrintAndLog(""); | |
65 | PrintAndLog("Sample : lf awid clone 224 1337"); | |
66 | return 0; | |
db25599d | 67 | } |
68 | ||
508b37ba | 69 | int usage_lf_awid_brute(void){ |
978920b9 | 70 | PrintAndLog("Enables bruteforce of AWID26 reader with specified facility-code."); |
508b37ba | 71 | PrintAndLog("Per AWID26 format, the facility-code (FC) is 8-bit and the card number is 16-bit."); |
978920b9 | 72 | PrintAndLog("This is a incremental attack against reader."); |
508b37ba | 73 | PrintAndLog(""); |
74 | PrintAndLog("Usage: lf awid brute <Facility-Code>"); | |
75 | PrintAndLog("Options :"); | |
76 | PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code"); | |
77 | PrintAndLog(""); | |
78 | PrintAndLog("Sample : lf awid brute 224"); | |
79 | return 0; | |
80 | } | |
81 | ||
52f2df61 | 82 | int CmdAWIDDemodFSK(const char *Cmd) { |
a126332a | 83 | int findone = 0; |
84 | if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod(); | |
85 | if (Cmd[0] == '1') findone = 1; | |
86 | ||
87 | UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}}; | |
88 | clearCommandBuffer(); | |
89 | SendCommand(&c); | |
90 | return 0; | |
db25599d | 91 | } |
92 | ||
a126332a | 93 | //refactored by marshmellow |
94 | int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) { | |
95 | uint8_t pre[66]; | |
96 | memset(pre, 0, sizeof(pre)); | |
97 | AWIDBits[7]=1; | |
98 | num_to_bytebits(26, 8, pre); | |
52f2df61 | 99 | |
a126332a | 100 | uint8_t wiegand[24]; |
101 | num_to_bytebits(fc, 8, wiegand); | |
102 | num_to_bytebits(cn, 16, wiegand+8); | |
52f2df61 | 103 | |
a126332a | 104 | wiegand_add_parity(pre+8, wiegand, 24); |
a126332a | 105 | size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1); |
fcb1cdba | 106 | |
a126332a | 107 | if (bitLen != 88) return 0; |
52f2df61 | 108 | return 1; |
db25599d | 109 | } |
110 | ||
a126332a | 111 | int CmdAWIDSim(const char *Cmd) { |
fcb1cdba | 112 | uint32_t fcode = 0, cnum = 0, fc = 0, cn = 0; |
a126332a | 113 | uint8_t bits[96]; |
114 | uint8_t *bs = bits; | |
115 | size_t size = sizeof(bits); | |
fcb1cdba | 116 | memset(bs, 0x00, size); |
52f2df61 | 117 | |
fcb1cdba | 118 | uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8 |
52f2df61 | 119 | uint64_t arg2 = 50; // clk RF/50 invert=0 |
120 | ||
121 | if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim(); | |
122 | ||
123 | fcode = (fc & 0x000000FF); | |
124 | cnum = (cn & 0x0000FFFF); | |
125 | ||
fcb1cdba | 126 | if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u", fc, fcode); |
127 | if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u", cn, cnum); | |
52f2df61 | 128 | |
129 | PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n", fcode, cnum); | |
130 | PrintAndLog("Press pm3-button to abort simulation or run another command"); | |
131 | ||
132 | if (!getAWIDBits(fc, cn, bs)) { | |
133 | PrintAndLog("Error with tag bitstream generation."); | |
134 | return 1; | |
135 | } | |
136 | // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0 | |
52f2df61 | 137 | // arg1 --- fcHigh<<8 + fcLow |
138 | // arg2 --- Inversion and clk setting | |
139 | // 96 --- Bitstream length: 96-bits == 12 bytes | |
a126332a | 140 | UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}}; |
141 | memcpy(c.d.asBytes, bs, size); | |
52f2df61 | 142 | clearCommandBuffer(); |
143 | SendCommand(&c); | |
144 | return 0; | |
db25599d | 145 | } |
146 | ||
a126332a | 147 | int CmdAWIDClone(const char *Cmd) { |
148 | uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0}; | |
149 | uint32_t fc=0,cn=0; | |
150 | uint8_t bits[96]; | |
52f2df61 | 151 | uint8_t *bs=bits; |
a126332a | 152 | memset(bs,0,sizeof(bits)); |
52f2df61 | 153 | |
154 | if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone(); | |
f3cfe428 | 155 | |
a126332a | 156 | if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q') |
157 | blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT; | |
158 | ||
f3cfe428 | 159 | if ((fc & 0xFF) != fc) { |
160 | fc &= 0xFF; | |
161 | PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc); | |
162 | } | |
163 | ||
164 | if ((cn & 0xFFFF) != cn) { | |
165 | cn &= 0xFFFF; | |
166 | PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn); | |
167 | } | |
52f2df61 | 168 | |
169 | if ( !getAWIDBits(fc, cn, bs)) { | |
170 | PrintAndLog("Error with tag bitstream generation."); | |
171 | return 1; | |
172 | } | |
173 | ||
a126332a | 174 | blocks[1] = bytebits_to_byte(bs,32); |
175 | blocks[2] = bytebits_to_byte(bs+32,32); | |
176 | blocks[3] = bytebits_to_byte(bs+64,32); | |
52f2df61 | 177 | |
a126332a | 178 | PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u", |
179 | fc, cn); | |
52f2df61 | 180 | PrintAndLog("Blk | Data "); |
181 | PrintAndLog("----+------------"); | |
182 | PrintAndLog(" 00 | 0x%08x", blocks[0]); | |
183 | PrintAndLog(" 01 | 0x%08x", blocks[1]); | |
184 | PrintAndLog(" 02 | 0x%08x", blocks[2]); | |
185 | PrintAndLog(" 03 | 0x%08x", blocks[3]); | |
186 | ||
187 | UsbCommand resp; | |
188 | UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; | |
f3cfe428 | 189 | |
a126332a | 190 | for (uint8_t i=0; i<4; i++) { |
52f2df61 | 191 | c.arg[0] = blocks[i]; |
192 | c.arg[1] = i; | |
193 | clearCommandBuffer(); | |
194 | SendCommand(&c); | |
195 | if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){ | |
196 | PrintAndLog("Error occurred, device did not respond during write operation."); | |
197 | return -1; | |
f3cfe428 | 198 | } |
199 | } | |
200 | return 0; | |
db25599d | 201 | } |
202 | ||
508b37ba | 203 | int CmdAWIDBrute(const char *Cmd){ |
204 | ||
205 | uint8_t fc = 0x00; | |
206 | uint8_t bits[96]; | |
207 | uint8_t *bs = bits; | |
208 | size_t size = sizeof(bits); | |
209 | memset(bs, 0x00, size); | |
210 | ||
211 | char cmdp = param_getchar(Cmd, 0); | |
212 | if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute(); | |
213 | ||
214 | fc = param_get8(Cmd, 0); | |
215 | if ( fc == 0) return usage_lf_awid_brute(); | |
216 | ||
978920b9 | 217 | PrintAndLog("Bruteforceing AWID26 Reader"); |
508b37ba | 218 | PrintAndLog("Press pm3-button to abort simulation or run another command"); |
219 | ||
220 | uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8 | |
221 | uint64_t arg2 = 50; // clk RF/50 invert=0 | |
222 | UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}}; | |
223 | ||
224 | for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){ | |
225 | if (ukbhit()) { | |
226 | PrintAndLog("aborted via keyboard!"); | |
227 | c.cmd = CMD_PING; | |
228 | c.arg[0] = 0x00; | |
229 | c.arg[1] = 0x00; | |
230 | c.arg[2] = 0x00; | |
231 | clearCommandBuffer(); | |
232 | SendCommand(&c); | |
233 | return 1; | |
234 | } | |
235 | ||
236 | (void)getAWIDBits(fc, cn, bs); | |
237 | memcpy(c.d.asBytes, bs, size); | |
238 | clearCommandBuffer(); | |
239 | SendCommand(&c); | |
240 | ||
241 | PrintAndLog("Trying FC: %u; CN: %u", fc, cn); | |
242 | // pause | |
243 | sleep(1); | |
244 | } | |
245 | return 0; | |
246 | } | |
247 | ||
a126332a | 248 | static command_t CommandTable[] = { |
f3cfe428 | 249 | {"help", CmdHelp, 1, "This help"}, |
250 | {"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"}, | |
251 | {"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"}, | |
a126332a | 252 | {"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"}, |
508b37ba | 253 | {"brute", CmdAWIDBrute, 0, "<Facility-Code> -- bruteforce card number"}, |
f3cfe428 | 254 | {NULL, NULL, 0, NULL} |
db25599d | 255 | }; |
256 | ||
a126332a | 257 | int CmdLFAWID(const char *Cmd) { |
f3cfe428 | 258 | CmdsParse(CommandTable, Cmd); |
259 | return 0; | |
db25599d | 260 | } |
261 | ||
a126332a | 262 | int CmdHelp(const char *Cmd) { |
f3cfe428 | 263 | CmdsHelp(CommandTable); |
264 | return 0; | |
db25599d | 265 | } |