--- /dev/null
+//-----------------------------------------------------------------------------
+// Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
+//
+// cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Low frequency AWID26 commands
+//-----------------------------------------------------------------------------
+
+#include <stdio.h> // sscanf
+#include "proxmark3.h" // Definitions, USB controls, etc
+#include "ui.h" // PrintAndLog
+#include "cmdparser.h" // CmdsParse, CmdsHelp
+#include "cmdlfawid.h" // AWID function declarations
+#include "lfdemod.h" // parityTest
+
+static int CmdHelp(const char *Cmd);
+
+int CmdAWIDDemodFSK(const char *Cmd)
+{
+ int findone=0;
+ if(Cmd[0]=='1') findone=1;
+ UsbCommand c={CMD_AWID_DEMOD_FSK};
+ c.arg[0]=findone;
+ SendCommand(&c);
+ return 0;
+}
+
+int getAWIDBits(unsigned int fc, unsigned int cn, uint8_t *AWIDBits)
+{
+ int i;
+ uint32_t fcode=(fc & 0x000000FF), cnum=(cn & 0x0000FFFF), uBits=0;
+ if (fcode != fc)
+ PrintAndLog("NOTE: Facility code truncated for AWID26 format (8-bit facility code)");
+ if (cnum!=cn)
+ PrintAndLog("NOTE: Card number was truncated for AWID26 format (16-bit card number)");
+
+ AWIDBits[0] = 0x01; // 6-bit Preamble with 2 parity bits
+ AWIDBits[1] = 0x1D; // First byte from card format (26-bit) plus parity bits
+ AWIDBits[2] = 0x80; // Set the next two bits as 0b10 to finish card format
+ uBits = (fcode<<4) + (cnum>>12);
+ if (!parityTest(uBits,12,0))
+ AWIDBits[2] |= (1<<5); // If not already even parity, set bit to make even
+ uBits = AWIDBits[2]>>5;
+ if (!parityTest(uBits, 3, 1))
+ AWIDBits[2] |= (1<<4);
+ uBits = fcode>>5; // first 3 bits of facility-code
+ AWIDBits[2] += (uBits<<1);
+ if (!parityTest(uBits, 3, 1))
+ AWIDBits[2]++; // Set parity bit to make odd parity
+ uBits = (fcode & 0x1C)>>2;
+ AWIDBits[3] = 0;
+ if (!parityTest(uBits,3,1))
+ AWIDBits[3] |= (1<<4);
+ AWIDBits[3] += (uBits<<5);
+ uBits = ((fcode & 0x3)<<1) + ((cnum & 0x8000)>>15); // Grab/shift 2 LSBs from facility code and add shifted MSB from cardnum
+ if (!parityTest(uBits,3,1))
+ AWIDBits[3]++; // Set LSB for parity
+ AWIDBits[3]+= (uBits<<1);
+ uBits = (cnum & 0x7000)>>12;
+ AWIDBits[4] = uBits<<5;
+ if (!parityTest(uBits,3,1))
+ AWIDBits[4] |= (1<<4);
+ uBits = (cnum & 0x0E00)>>9;
+ AWIDBits[4] += (uBits<<1);
+ if (!parityTest(uBits,3,1))
+ AWIDBits[4]++; // Set LSB for parity
+ uBits = (cnum & 0x1C0)>>6; // Next bits from card number
+ AWIDBits[5]=(uBits<<5);
+ if (!parityTest(uBits,3,1))
+ AWIDBits[5] |= (1<<4); // Set odd parity bit as needed
+ uBits = (cnum & 0x38)>>3;
+ AWIDBits[5]+= (uBits<<1);
+ if (!parityTest(uBits,3,1))
+ AWIDBits[5]++; // Set odd parity bit as needed
+ uBits = (cnum & 0x7); // Last three bits from card number!
+ AWIDBits[6] = (uBits<<5);
+ if (!parityTest(uBits,3,1))
+ AWIDBits[6] |= (1<<4);
+ uBits = (cnum & 0x0FFF);
+ if (!parityTest(uBits,12,1))
+ AWIDBits[6] |= (1<<3);
+ else
+ AWIDBits[6]++;
+ for (i = 7; i<12; i++)
+ AWIDBits[i]=0x11;
+ return 1;
+}
+
+int CmdAWIDSim(const char *Cmd)
+{
+ uint32_t fcode = 0, cnum = 0, fc=0, cn=0, i=0;
+ uint8_t *BS, BitStream[12];
+ uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
+ uint64_t arg2 = 50; // clk RF/50 invert=0
+ BS = BitStream;
+ if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) {
+ PrintAndLog("Usage: lf awid sim <facility-code> <card number>");
+ return 0;
+ }
+
+ fcode=(fc & 0x000000FF);
+ cnum=(cn & 0x0000FFFF);
+ if (fc!=fcode)
+ PrintAndLog("Facility-Code (%u) truncated to 8-bits: %u",fc,fcode);
+ if (cn!=cnum)
+ PrintAndLog("Card number (%u) truncated to 16-bits: %u",cn,cnum);
+ PrintAndLog("Emulating AWID26 -- FC: %u; CN: %u\n",fcode,cnum);
+ PrintAndLog("Press pm3-button to abort simulation or run another command");
+ // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
+ if (getAWIDBits(fc, cn, BS)) {
+ PrintAndLog("Running 'lf simfsk c 50 H 10 L 8 d %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x'",
+ BS[0],BS[1],BS[2],BS[3],BS[4],BS[5],BS[6],
+ BS[7],BS[8],BS[9],BS[10],BS[11]);
+ } else
+ PrintAndLog("Error with tag bitstream generation.");
+ UsbCommand c;
+ c.cmd = CMD_FSK_SIM_TAG;
+ c.arg[0] = arg1; // fcHigh<<8 + fcLow
+ c.arg[1] = arg2; // Inversion and clk setting
+ c.arg[2] = 96; // Bitstream length: 96-bits == 12 bytes
+ for (i=0; i < 96; i++)
+ c.d.asBytes[i] = (BS[i/8] & (1<<(7-(i%8))))?1:0;
+ SendCommand(&c);
+ return 0;
+}
+
+int CmdAWIDClone(const char *Cmd)
+{
+ uint32_t fc=0,cn=0,blocks[4] = {0x00107060, 0, 0, 0x11111111}, i=0;
+ uint8_t BitStream[12];
+ uint8_t *BS=BitStream;
+ UsbCommand c;
+
+
+ if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) {
+ PrintAndLog("Usage: lf awid clone <facility-code> <card number>");
+ return 0;
+ }
+
+ if ((fc & 0xFF) != fc) {
+ fc &= 0xFF;
+ PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", fc);
+ }
+ if ((cn & 0xFFFF) != cn) {
+ cn &= 0xFFFF;
+ PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", cn);
+ }
+ if (getAWIDBits(fc,cn,BS)) {
+ PrintAndLog("Preparing to clone AWID26 to T55x7 with FC: %u, CN: %u (Raw: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x)",
+ fc,cn, BS[0],BS[1],BS[2],BS[3],BS[4],BS[5],BS[6],BS[7],BS[8],BS[9],BS[10],BS[11]);
+ blocks[1] = (BS[0]<<24) + (BS[1]<<16) + (BS[2]<<8) + (BS[3]);
+ blocks[2] = (BS[4]<<24) + (BS[5]<<16) + (BS[6]<<8) + (BS[7]);
+ PrintAndLog("Block 0: 0x%08x", blocks[0]);
+ PrintAndLog("Block 1: 0x%08x", blocks[1]);
+ PrintAndLog("Block 2: 0x%08x", blocks[2]);
+ PrintAndLog("Block 3: 0x%08x", blocks[3]);
+ for (i=0; i<4; i++) {
+ c.cmd = CMD_T55XX_WRITE_BLOCK;
+ c.arg[0] = blocks[i];
+ c.arg[1] = i;
+ c.arg[2] = 0;
+ SendCommand(&c);
+ }
+ }
+ return 0;
+}
+
+static command_t CommandTable[] =
+{
+ {"help", CmdHelp, 1, "This help"},
+ {"fskdemod", CmdAWIDDemodFSK, 0, "['1'] Realtime AWID FSK demodulator (option '1' for one tag only)"},
+ {"sim", CmdAWIDSim, 0, "<Facility-Code> <Card Number> -- AWID tag simulator"},
+ {"clone", CmdAWIDClone, 0, "<Facility-Code> <Card Number> -- Clone AWID to T55x7 (tag must be in range of antenna)"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdLFAWID(const char *Cmd)
+{
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd)
+{
+ CmdsHelp(CommandTable);
+ return 0;
+}
projects / proxmark3-svn / blobdiff