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1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Low frequency HID commands
9 //-----------------------------------------------------------------------------
10
11 #include <stdio.h>
12 #include <string.h>
13 #include "proxmark3.h"
14 #include "ui.h"
15 #include "graph.h"
16 #include "cmdparser.h"
17 #include "cmdlfhid.h"
18
19 static int CmdHelp(const char *Cmd);
20
21 int CmdHIDDemod(const char *Cmd)
22 {
23 if (GraphTraceLen < 4800) {
24 PrintAndLog("too short; need at least 4800 samples");
25 return 0;
26 }
27
28 GraphTraceLen = 4800;
29 for (int i = 0; i < GraphTraceLen; ++i) {
30 if (GraphBuffer[i] < 0) {
31 GraphBuffer[i] = 0;
32 } else {
33 GraphBuffer[i] = 1;
34 }
35 }
36 RepaintGraphWindow();
37 return 0;
38 }
39
40 int CmdHIDDemodFSK(const char *Cmd)
41 {
42 int findone=0;
43 if(Cmd[0]=='1') findone=1;
44 UsbCommand c={CMD_HID_DEMOD_FSK};
45 c.arg[0]=findone;
46 SendCommand(&c);
47 return 0;
48 }
49
50 int CmdHIDSim(const char *Cmd)
51 {
52 unsigned int hi = 0, lo = 0;
53 int n = 0, i = 0;
54
55 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
56 hi = (hi << 4) | (lo >> 28);
57 lo = (lo << 4) | (n & 0xf);
58 }
59
60 PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
61 PrintAndLog("Press pm3-button to abort simulation");
62
63 UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
64 SendCommand(&c);
65 return 0;
66 }
67
68 int CmdHIDClone(const char *Cmd)
69 {
70 unsigned int hi2 = 0, hi = 0, lo = 0;
71 int n = 0, i = 0;
72 UsbCommand c;
73
74 if (strchr(Cmd,'l') != 0) {
75 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
76 hi2 = (hi2 << 4) | (hi >> 28);
77 hi = (hi << 4) | (lo >> 28);
78 lo = (lo << 4) | (n & 0xf);
79 }
80
81 PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
82
83 c.d.asBytes[0] = 1;
84 }
85 else {
86 while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
87 hi = (hi << 4) | (lo >> 28);
88 lo = (lo << 4) | (n & 0xf);
89 }
90
91 PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
92
93 hi2 = 0;
94 c.d.asBytes[0] = 0;
95 }
96
97 c.cmd = CMD_HID_CLONE_TAG;
98 c.arg[0] = hi2;
99 c.arg[1] = hi;
100 c.arg[2] = lo;
101
102 SendCommand(&c);
103 return 0;
104 }
105
106 static command_t CommandTable[] =
107 {
108 {"help", CmdHelp, 1, "This help"},
109 {"demod", CmdHIDDemod, 1, "Demodulate HID Prox Card II (not optimal)"},
110 {"fskdemod", CmdHIDDemodFSK, 0, "['1'] Realtime HID FSK demodulator (option '1' for one tag only)"},
111 {"sim", CmdHIDSim, 0, "<ID> -- HID tag simulator"},
112 {"clone", CmdHIDClone, 0, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"},
113 {NULL, NULL, 0, NULL}
114 };
115
116 int CmdLFHID(const char *Cmd)
117 {
118 CmdsParse(CommandTable, Cmd);
119 return 0;
120 }
121
122 int CmdHelp(const char *Cmd)
123 {
124 CmdsHelp(CommandTable);
125 return 0;
126 }
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