8843e9e0cf6de146e8e605bebfee01fa3766113a
[proxmark3-svn] / client / cmdlfawid.c
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 <string.h>
14 #include <stdio.h> // sscanf
15 #include "proxmark3.h" // Definitions, USB controls, etc
16 #include "ui.h" // PrintAndLog
17 #include "cmdparser.h" // CmdsParse, CmdsHelp
18 #include "cmdlfawid.h" // AWID function declarations
19 #include "lfdemod.h" // parityTest
20 #include "util.h" // weigandparity
21 #include "protocols.h" // for T55xx config register definitions
22 #include "cmdmain.h"
23
24 static int CmdHelp(const char *Cmd);
25
26 int usage_lf_awid_fskdemod(void) {
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;
38 }
39
40 int usage_lf_awid_sim(void) {
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 representing the AWID facility code");
48 PrintAndLog(" <Card Number> : 16-bit value representing the AWID card number");
49 PrintAndLog("");
50 PrintAndLog("Sample : lf awid sim 224 1337");
51 return 0;
52 }
53
54 int usage_lf_awid_clone(void) {
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 : ");
61 PrintAndLog(" <Facility-Code> : 8-bit value representing the AWID facility code");
62 PrintAndLog(" <Card Number> : 16-bit value representing the 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;
67 }
68
69 int CmdAWIDDemodFSK(const char *Cmd) {
70 int findone=0;
71 if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
72 if (Cmd[0] == '1') findone = 1;
73
74 UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
75 clearCommandBuffer();
76 SendCommand(&c);
77 return 0;
78 }
79
80 //refactored by marshmellow
81 int getAWIDBits(uint32_t fc, uint32_t cn, uint8_t *AWIDBits) {
82 uint8_t pre[66];
83 memset(pre, 0, sizeof(pre));
84 AWIDBits[7]=1;
85 num_to_bytebits(26, 8, pre);
86
87 uint8_t wiegand[24];
88 num_to_bytebits(fc, 8, wiegand);
89 num_to_bytebits(cn, 16, wiegand+8);
90
91 wiegand_add_parity(pre+8, wiegand, 24);
92
93 size_t bitLen = addParity(pre, AWIDBits+8, 66, 4, 1);
94 if (bitLen != 88) return 0;
95 //for (uint8_t i = 0; i<3; i++){
96 // PrintAndLog("DEBUG: %08X", bytebits_to_byte(AWIDBits+(32*i),32));
97 //}
98 return 1;
99 }
100
101 int CmdAWIDSim(const char *Cmd) {
102 uint32_t fcode = 0, cnum = 0, fc=0, cn=0;
103 uint8_t BitStream[96];
104 uint8_t *bs = BitStream;
105 size_t size = sizeof(BitStream);
106 memset(bs, 0, size);
107
108 uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
109 uint64_t arg2 = 50; // clk RF/50 invert=0
110
111 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_sim();
112
113 fcode = (fc & 0x000000FF);
114 cnum = (cn & 0x0000FFFF);
115
116 if (fc != fcode) PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
117 if (cn != cnum) PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
118
119 PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
120 PrintAndLog("Press pm3-button to abort simulation or run another command");
121
122 if (!getAWIDBits(fc, cn, bs)) {
123 PrintAndLog("Error with tag bitstream generation.");
124 return 1;
125 }
126 // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
127 UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
128 memcpy(c.d.asBytes, bs, size);
129 clearCommandBuffer();
130 SendCommand(&c);
131 return 0;
132 }
133
134 int CmdAWIDClone(const char *Cmd) {
135 uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
136 uint32_t fc=0,cn=0;
137 uint8_t BitStream[96];
138 uint8_t *bs=BitStream;
139 memset(bs,0,sizeof(BitStream));
140
141 if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_awid_clone();
142
143 if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
144 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | ((50-2)>>1)<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
145
146 if ((fc & 0xFF) != fc) {
147 fc &= 0xFF;
148 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
149 }
150 if ((cn & 0xFFFF) != cn) {
151 cn &= 0xFFFF;
152 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
153 }
154
155 if ( !getAWIDBits(fc, cn, bs)) {
156 PrintAndLog("Error with tag bitstream generation.");
157 return 1;
158 }
159
160 blocks[1] = bytebits_to_byte(bs,32);
161 blocks[2] = bytebits_to_byte(bs+32,32);
162 blocks[3] = bytebits_to_byte(bs+64,32);
163
164 PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u",
165 fc, cn);
166 PrintAndLog("Blk | Data ");
167 PrintAndLog("----+------------");
168 PrintAndLog(" 00 | 0x%08x", blocks[0]);
169 PrintAndLog(" 01 | 0x%08x", blocks[1]);
170 PrintAndLog(" 02 | 0x%08x", blocks[2]);
171 PrintAndLog(" 03 | 0x%08x", blocks[3]);
172
173 UsbCommand resp;
174 UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
175
176 for (uint8_t i=0; i<4; i++) {
177 c.cmd = CMD_T55XX_WRITE_BLOCK;
178 c.arg[0] = blocks[i];
179 c.arg[1] = i;
180 c.arg[2] = 0;
181 clearCommandBuffer();
182 SendCommand(&c);
183 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
184 PrintAndLog("Error occurred, device did not respond during write operation.");
185 return -1;
186 }
187
188 }
189 return 0;
190 }
191
192 static command_t CommandTable[] = {
193 {"help", CmdHelp, 1, "This help"},
194 {"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
195 {"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
196 {"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> <Q5> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
197 {NULL, NULL, 0, NULL}
198 };
199
200 int CmdLFAWID(const char *Cmd) {
201 CmdsParse(CommandTable, Cmd);
202 return 0;
203 }
204
205 int CmdHelp(const char *Cmd) {
206 CmdsHelp(CommandTable);
207 return 0;
208 }
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