]> git.zerfleddert.de Git - proxmark3-svn/blame - client/cmdlfawid.c
REM: code cleanup.
[proxmark3-svn] / client / cmdlfawid.c
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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"
508b37ba 22 #include "sleep.h"
23
db25599d 24static int CmdHelp(const char *Cmd);
25
db25599d 26int 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
40int 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
54int 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 69int usage_lf_awid_brute(void){
70 PrintAndLog("Enables bruteforce of AWID26 card with specified facility-code.");
71 PrintAndLog("Per AWID26 format, the facility-code (FC) is 8-bit and the card number is 16-bit.");
72 PrintAndLog("");
73 PrintAndLog("Usage: lf awid brute <Facility-Code>");
74 PrintAndLog("Options :");
75 PrintAndLog(" <Facility-Code> : 8-bit value AWID facility code");
76 PrintAndLog("");
77 PrintAndLog("Sample : lf awid brute 224");
78 return 0;
79}
80
52f2df61 81int CmdAWIDDemodFSK(const char *Cmd) {
a126332a 82 int findone = 0;
83 if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
84 if (Cmd[0] == '1') findone = 1;
85
86 UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
87 clearCommandBuffer();
88 SendCommand(&c);
89 return 0;
db25599d 90}
91
a126332a 92//refactored by marshmellow
93int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) {
94 uint8_t pre[66];
95 memset(pre, 0, sizeof(pre));
96 AWIDBits[7]=1;
97 num_to_bytebits(26, 8, pre);
52f2df61 98
a126332a 99 uint8_t wiegand[24];
100 num_to_bytebits(fc, 8, wiegand);
101 num_to_bytebits(cn, 16, wiegand+8);
52f2df61 102
a126332a 103 wiegand_add_parity(pre+8, wiegand, 24);
a126332a 104 size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
fcb1cdba 105
a126332a 106 if (bitLen != 88) return 0;
52f2df61 107 return 1;
db25599d 108}
109
a126332a 110int CmdAWIDSim(const char *Cmd) {
fcb1cdba 111 uint32_t fcode = 0, cnum = 0, fc = 0, cn = 0;
a126332a 112 uint8_t bits[96];
113 uint8_t *bs = bits;
114 size_t size = sizeof(bits);
fcb1cdba 115 memset(bs, 0x00, size);
52f2df61 116
fcb1cdba 117 uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
52f2df61 118 uint64_t arg2 = 50; // clk RF/50 invert=0
119
120 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
121
122 fcode = (fc & 0x000000FF);
123 cnum = (cn & 0x0000FFFF);
124
fcb1cdba 125 if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u", fc, fcode);
126 if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u", cn, cnum);
52f2df61 127
128 PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n", fcode, cnum);
129 PrintAndLog("Press pm3-button to abort simulation or run another command");
130
131 if (!getAWIDBits(fc, cn, bs)) {
132 PrintAndLog("Error with tag bitstream generation.");
133 return 1;
134 }
135 // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
52f2df61 136 // arg1 --- fcHigh<<8 + fcLow
137 // arg2 --- Inversion and clk setting
138 // 96 --- Bitstream length: 96-bits == 12 bytes
a126332a 139 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
140 memcpy(c.d.asBytes, bs, size);
52f2df61 141 clearCommandBuffer();
142 SendCommand(&c);
143 return 0;
db25599d 144}
145
a126332a 146int CmdAWIDClone(const char *Cmd) {
147 uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
148 uint32_t fc=0,cn=0;
149 uint8_t bits[96];
52f2df61 150 uint8_t *bs=bits;
a126332a 151 memset(bs,0,sizeof(bits));
52f2df61 152
153 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
f3cfe428 154
a126332a 155 if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
156 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
157
f3cfe428 158 if ((fc & 0xFF) != fc) {
159 fc &= 0xFF;
160 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
161 }
162
163 if ((cn & 0xFFFF) != cn) {
164 cn &= 0xFFFF;
165 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
166 }
52f2df61 167
168 if ( !getAWIDBits(fc, cn, bs)) {
169 PrintAndLog("Error with tag bitstream generation.");
170 return 1;
171 }
172
a126332a 173 blocks[1] = bytebits_to_byte(bs,32);
174 blocks[2] = bytebits_to_byte(bs+32,32);
175 blocks[3] = bytebits_to_byte(bs+64,32);
52f2df61 176
a126332a 177 PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
178 fc, cn);
52f2df61 179 PrintAndLog("Blk | Data ");
180 PrintAndLog("----+------------");
181 PrintAndLog(" 00 | 0x%08x", blocks[0]);
182 PrintAndLog(" 01 | 0x%08x", blocks[1]);
183 PrintAndLog(" 02 | 0x%08x", blocks[2]);
184 PrintAndLog(" 03 | 0x%08x", blocks[3]);
185
186 UsbCommand resp;
187 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
f3cfe428 188
a126332a 189 for (uint8_t i=0; i<4; i++) {
52f2df61 190 c.arg[0] = blocks[i];
191 c.arg[1] = i;
192 clearCommandBuffer();
193 SendCommand(&c);
194 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
195 PrintAndLog("Error occurred, device did not respond during write operation.");
196 return -1;
f3cfe428 197 }
198 }
199 return 0;
db25599d 200}
201
508b37ba 202int CmdAWIDBrute(const char *Cmd){
203
204 uint8_t fc = 0x00;
205 uint8_t bits[96];
206 uint8_t *bs = bits;
207 size_t size = sizeof(bits);
208 memset(bs, 0x00, size);
209
210 char cmdp = param_getchar(Cmd, 0);
211 if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_brute();
212
213 fc = param_get8(Cmd, 0);
214 if ( fc == 0) return usage_lf_awid_brute();
215
216 PrintAndLog("Bruteforceing AWID26");
217 PrintAndLog("Press pm3-button to abort simulation or run another command");
218
219 uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
220 uint64_t arg2 = 50; // clk RF/50 invert=0
221 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
222
223 for ( uint16_t cn = 1; cn < 0xFFFF; ++cn){
224 if (ukbhit()) {
225 PrintAndLog("aborted via keyboard!");
226 c.cmd = CMD_PING;
227 c.arg[0] = 0x00;
228 c.arg[1] = 0x00;
229 c.arg[2] = 0x00;
230 clearCommandBuffer();
231 SendCommand(&c);
232 return 1;
233 }
234
235 (void)getAWIDBits(fc, cn, bs);
236 memcpy(c.d.asBytes, bs, size);
237 clearCommandBuffer();
238 SendCommand(&c);
239
240 PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
241 // pause
242 sleep(1);
243 }
244 return 0;
245}
246
a126332a 247static command_t CommandTable[] = {
f3cfe428 248 {"help", CmdHelp, 1, "This help"},
249 {"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
250 {"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
a126332a 251 {"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7"},
508b37ba 252 {"brute", CmdAWIDBrute, 0, "<Facility-Code> -- bruteforce card number"},
f3cfe428 253 {NULL, NULL, 0, NULL}
db25599d 254};
255
a126332a 256int CmdLFAWID(const char *Cmd) {
f3cfe428 257 CmdsParse(CommandTable, Cmd);
258 return 0;
db25599d 259}
260
a126332a 261int CmdHelp(const char *Cmd) {
f3cfe428 262 CmdsHelp(CommandTable);
263 return 0;
db25599d 264}
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