633d068682
old "hf legic info" is now "hf legic reader" old "hf legic read" is now "hf legic rdmem" old "hf legic decode" is now "hf legic info" ADD: new command "hf legic dump", which will autodetect tagtype and dump all mem to a binary file.
939 lines
26 KiB
C
939 lines
26 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// High frequency Legic commands
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//-----------------------------------------------------------------------------
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#include "cmdhflegic.h"
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static int CmdHelp(const char *Cmd);
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#define MAX_LENGTH 1024
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int usage_legic_calccrc8(void){
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PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes.");
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PrintAndLog("There must be an even number of hexsymbols as input.");
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PrintAndLog("Usage: hf legic crc8 [h] b <hexbytes> u <uidcrc> c <crc type>");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog(" b <hexbytes> : hex bytes");
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PrintAndLog(" u <uidcrc> : MCC hexbyte");
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PrintAndLog(" c <crc type> : 8|16 bit crc size");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic crc8 b deadbeef1122");
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PrintAndLog(" hf legic crc8 b deadbeef1122 u 9A c 16");
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return 0;
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}
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int usage_legic_load(void){
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PrintAndLog("It loads datasamples from the file `filename` to device memory");
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PrintAndLog("Usage: hf legic load [h] <file name>");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog(" <filename> : Name of file to load");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic load filename");
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return 0;
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}
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int usage_legic_read(void){
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PrintAndLog("Read data from a legic tag.");
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PrintAndLog("Usage: hf legic read [h] <offset> <length> <IV>");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog(" <offset> : offset in data array to start download from (hex)");
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PrintAndLog(" <length> : number of bytes to read (hex)");
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PrintAndLog(" <IV> : (optional) Initialization vector to use (hex, odd and 7bits)");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic read 0 21 - reads from byte[0] 21 bytes(system header)");
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PrintAndLog(" hf legic read 0 4 55 - reads from byte[0] 4 bytes with IV 0x55");
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PrintAndLog(" hf legic read 0 100 55 - reads 256bytes with IV 0x55");
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return 0;
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}
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int usage_legic_sim(void){
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PrintAndLog("Missing help text.");
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return 0;
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}
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int usage_legic_write(void){
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PrintAndLog(" Write sample buffer to a legic tag. (use after load or read)");
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PrintAndLog("Usage: hf legic write [h] <offset> <length> <IV>");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog(" <offset> : offset in data array to start writing from (hex)");
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PrintAndLog(" <length> : number of bytes to write (hex)");
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PrintAndLog(" <IV> : (optional) Initialization vector to use (ODD and 7bits)");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic write 10 4 - writes 0x4 to byte[0x10]");
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return 0;
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}
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int usage_legic_rawwrite(void){
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PrintAndLog("Write raw data direct to a specific offset on legic tag.");
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PrintAndLog("Usage: hf legic writeraw [h] <offset> <value> <IV>");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog(" <offset> : offset to write to (hex)");
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PrintAndLog(" <value> : value (hex)");
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PrintAndLog(" <IV> : (optional) Initialization vector to use (hex, odd and 7bits)");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic writeraw 10 4 - writes 0x4 to byte[0x10]");
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return 0;
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}
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int usage_legic_fill(void){
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PrintAndLog("Missing help text.");
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return 0;
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}
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int usage_legic_reader(void){
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PrintAndLog("Read UID and type information from a legic tag.");
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PrintAndLog("Usage: hf legic reader [h]");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic reader");
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return 0;
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}
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int usage_legic_info(void){
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PrintAndLog("Reads information from a legic prime tag.");
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PrintAndLog("Shows systemarea, user areas etc");
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PrintAndLog("Usage: hf legic info [h]");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic info");
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return 0;
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}
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int usage_legic_dump(void){
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PrintAndLog("Reads all pages from LEGIC MIM22, MIM256, MIM1024");
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PrintAndLog("and saves binary dump into the file `filename.bin` or `cardUID.bin`");
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PrintAndLog("It autodetects card type.\n");
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PrintAndLog("Usage: hf legic dump [h] o <filename w/o .bin>");
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PrintAndLog("Options:");
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PrintAndLog(" h : this help");
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PrintAndLog(" n <FN> : filename w/o .bin to save the dump as");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" hf legic dump");
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PrintAndLog(" hf legic dump o myfile");
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return 0;
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}
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/*
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* Output BigBuf and deobfuscate LEGIC RF tag data.
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* This is based on information given in the talk held
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* by Henryk Ploetz and Karsten Nohl at 26c3
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*/
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int CmdLegicInfo(const char *Cmd) {
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char cmdp = param_getchar(Cmd, 0);
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if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info();
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int i = 0, k = 0, segmentNum = 0, segment_len = 0, segment_flag = 0;
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int crc = 0, wrp = 0, wrc = 0;
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uint8_t stamp_len = 0;
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uint8_t data[1024]; // receiver buffer
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char token_type[5] = {0,0,0,0,0};
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int dcf = 0;
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int bIsSegmented = 0;
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CmdLegicRFRead("0 21 55");
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// copy data from device
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GetEMLFromBigBuf(data, sizeof(data), 0);
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if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){
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PrintAndLog("Command execute timeout");
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return 1;
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}
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// Output CDF System area (9 bytes) plus remaining header area (12 bytes)
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crc = data[4];
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uint32_t calc_crc = CRC8Legic(data, 4);
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PrintAndLog("\nCDF: System Area");
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PrintAndLog("------------------------------------------------------");
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PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x %s",
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data[0],
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data[1],
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data[2],
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data[3],
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data[4],
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(calc_crc == crc) ? "OK":"Fail"
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);
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token_type[0] = 0;
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dcf = ((int)data[6] << 8) | (int)data[5];
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// New unwritten media?
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if(dcf == 0xFFFF) {
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PrintAndLog("DCF: %d (%02x %02x), Token Type=NM (New Media)",
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dcf,
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data[5],
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data[6]
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);
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} else if(dcf > 60000) { // Master token?
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int fl = 0;
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if(data[6] == 0xec) {
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strncpy(token_type, "XAM", sizeof(token_type));
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fl = 1;
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stamp_len = 0x0c - (data[5] >> 4);
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} else {
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switch (data[5] & 0x7f) {
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case 0x00 ... 0x2f:
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strncpy(token_type, "IAM", sizeof(token_type));
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fl = (0x2f - (data[5] & 0x7f)) + 1;
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break;
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case 0x30 ... 0x6f:
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strncpy(token_type, "SAM", sizeof(token_type));
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fl = (0x6f - (data[5] & 0x7f)) + 1;
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break;
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case 0x70 ... 0x7f:
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strncpy(token_type, "GAM", sizeof(token_type));
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fl = (0x7f - (data[5] & 0x7f)) + 1;
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break;
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}
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stamp_len = 0xfc - data[6];
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}
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PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u), OL=%02u, FL=%02u",
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dcf,
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data[5],
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data[6],
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token_type,
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(data[5] & 0x80 )>> 7,
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stamp_len,
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fl
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);
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} else { // Is IM(-S) type of card...
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if(data[7] == 0x9F && data[8] == 0xFF) {
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bIsSegmented = 1;
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strncpy(token_type, "IM-S", sizeof(token_type));
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} else {
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strncpy(token_type, "IM", sizeof(token_type));
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}
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PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u)",
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dcf,
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data[5],
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data[6],
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token_type,
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(data[5]&0x80) >> 7
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);
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}
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// Makes no sence to show this on blank media...
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if(dcf != 0xFFFF) {
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if(bIsSegmented) {
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PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, SSC=%02x",
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data[7] & 0x0f,
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(data[7] & 0x70) >> 4,
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(data[7] & 0x80) >> 7,
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data[8]
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);
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}
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// Header area is only available on IM-S cards, on master tokens this data is the master token data itself
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if(bIsSegmented || dcf > 60000) {
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if(dcf > 60000) {
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PrintAndLog("Master token data");
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PrintAndLog("%s", sprint_hex(data+8, 14));
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} else {
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PrintAndLog("Remaining Header Area");
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PrintAndLog("%s", sprint_hex(data+9, 13));
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}
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}
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}
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uint8_t segCrcBytes[8] = {0,0,0,0,0,0,0,0};
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uint32_t segCalcCRC = 0;
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uint32_t segCRC = 0;
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// Data card?
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if(dcf <= 60000) {
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PrintAndLog("\nADF: User Area");
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PrintAndLog("------------------------------------------------------");
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if(bIsSegmented) {
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// Data start point on segmented cards
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i = 22;
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// decode segments
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for (segmentNum=1; segmentNum < 128; segmentNum++ )
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{
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segment_len = ((data[i+1] ^ crc) & 0x0f) * 256 + (data[i] ^ crc);
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segment_flag = ((data[i+1] ^ crc) & 0xf0) >> 4;
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wrp = (data[i+2] ^ crc);
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wrc = ((data[i+3] ^ crc) & 0x70) >> 4;
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bool hasWRC = (wrc > 0);
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bool hasWRP = (wrp > wrc);
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int wrp_len = (wrp - wrc);
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int remain_seg_payload_len = (segment_len - wrp - 5);
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// validate segment-crc
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segCrcBytes[0]=data[0]; //uid0
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segCrcBytes[1]=data[1]; //uid1
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segCrcBytes[2]=data[2]; //uid2
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segCrcBytes[3]=data[3]; //uid3
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segCrcBytes[4]=(data[i] ^ crc); //hdr0
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segCrcBytes[5]=(data[i+1] ^ crc); //hdr1
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segCrcBytes[6]=(data[i+2] ^ crc); //hdr2
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segCrcBytes[7]=(data[i+3] ^ crc); //hdr3
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segCalcCRC = CRC8Legic(segCrcBytes, 8);
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segCRC = data[i+4] ^ crc;
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PrintAndLog("Segment %02u \nraw header | 0x%02X 0x%02X 0x%02X 0x%02X \nSegment len: %u, Flag: 0x%X (valid:%01u, last:%01u), WRP: %02u, WRC: %02u, RD: %01u, CRC: 0x%02X (%s)",
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segmentNum,
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data[i] ^ crc,
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data[i+1] ^ crc,
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data[i+2] ^ crc,
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data[i+3] ^ crc,
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segment_len,
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segment_flag,
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(segment_flag & 0x4) >> 2,
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(segment_flag & 0x8) >> 3,
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wrp,
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wrc,
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((data[i+3]^crc) & 0x80) >> 7,
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segCRC,
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( segCRC == segCalcCRC ) ? "OK" : "fail"
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);
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i += 5;
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if ( hasWRC ) {
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PrintAndLog("WRC protected area: (I %d | K %d| WRC %d)", i, k, wrc);
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PrintAndLog("\nrow | data");
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PrintAndLog("-----+------------------------------------------------");
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for ( k=i; k < (i + wrc); ++k)
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data[k] ^= crc;
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print_hex_break( data+i, wrc, 16);
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i += wrc;
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}
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if ( hasWRP ) {
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PrintAndLog("Remaining write protected area: (I %d | K %d | WRC %d | WRP %d WRP_LEN %d)",i, k, wrc, wrp, wrp_len);
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PrintAndLog("\nrow | data");
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PrintAndLog("-----+------------------------------------------------");
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for (k=i; k < (i+wrp_len); ++k)
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data[k] ^= crc;
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print_hex_break( data+i, wrp_len, 16);
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i += wrp_len;
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// does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...)
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if( wrp_len == 8 )
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PrintAndLog("Card ID: %2X%02X%02X", data[i-4]^crc, data[i-3]^crc, data[i-2]^crc);
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}
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PrintAndLog("Remaining segment payload: (I %d | K %d | Remain LEN %d)", i, k, remain_seg_payload_len);
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PrintAndLog("\nrow | data");
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PrintAndLog("-----+------------------------------------------------");
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for ( k=i; k < (i+remain_seg_payload_len); ++k)
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data[k] ^= crc;
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print_hex_break( data+i, remain_seg_payload_len, 16);
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i += remain_seg_payload_len;
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PrintAndLog("-----+------------------------------------------------\n");
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// end with last segment
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if (segment_flag & 0x8) return 0;
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} // end for loop
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} else {
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// Data start point on unsegmented cards
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i = 8;
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wrp = data[7] & 0x0F;
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wrc = (data[7] & 0x70) >> 4;
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bool hasWRC = (wrc > 0);
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bool hasWRP = (wrp > wrc);
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int wrp_len = (wrp - wrc);
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int remain_seg_payload_len = (1024 - 22 - wrp); // Any chance to get physical card size here!?
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PrintAndLog("Unsegmented card - WRP: %02u, WRC: %02u, RD: %01u",
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wrp,
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wrc,
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(data[7] & 0x80) >> 7
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);
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if ( hasWRC ) {
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PrintAndLog("WRC protected area: (I %d | WRC %d)", i, wrc);
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PrintAndLog("\nrow | data");
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PrintAndLog("-----+------------------------------------------------");
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print_hex_break( data+i, wrc, 16);
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i += wrc;
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}
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if ( hasWRP ) {
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PrintAndLog("Remaining write protected area: (I %d | WRC %d | WRP %d | WRP_LEN %d)", i, wrc, wrp, wrp_len);
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PrintAndLog("\nrow | data");
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PrintAndLog("-----+------------------------------------------------");
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print_hex_break( data + i, wrp_len, 16);
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i += wrp_len;
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// does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...)
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if( wrp_len == 8 )
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PrintAndLog("Card ID: %2X%02X%02X", data[i-4], data[i-3], data[i-2]);
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}
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PrintAndLog("Remaining segment payload: (I %d | Remain LEN %d)", i, remain_seg_payload_len);
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PrintAndLog("\nrow | data");
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PrintAndLog("-----+------------------------------------------------");
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print_hex_break( data + i, remain_seg_payload_len, 16);
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i += remain_seg_payload_len;
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PrintAndLog("-----+------------------------------------------------\n");
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}
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}
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return 0;
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}
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int CmdLegicRFRead(const char *Cmd) {
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// params:
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// offset in data memory
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// number of bytes to read
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char cmdp = param_getchar(Cmd, 0);
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if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read();
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uint32_t offset = 0, len = 0, IV = 1;
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sscanf(Cmd, "%x %x %x", &offset, &len, &IV);
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// OUT-OF-BOUNDS check
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if ( len + offset > MAX_LENGTH ) {
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len = MAX_LENGTH - offset;
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PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len);
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}
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if ( (IV & 0x7F) != IV ){
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IV &= 0x7F;
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PrintAndLog("Truncating IV to 7bits");
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}
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if ( (IV & 1) == 0 ){
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IV |= 0x01;
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PrintAndLog("LSB of IV must be SET");
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}
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UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}};
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clearCommandBuffer();
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SendCommand(&c);
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UsbCommand resp;
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if (WaitForResponseTimeout(CMD_ACK, &resp, 3000)) {
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uint8_t isOK = resp.arg[0] & 0xFF;
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uint16_t readlen = resp.arg[1];
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if ( isOK ) {
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uint8_t *data = malloc(readlen);
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if ( !data ){
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PrintAndLog("Cannot allocate memory");
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return 2;
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}
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if ( readlen != len )
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PrintAndLog("Fail, only managed to read 0x%02X bytes", readlen);
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// copy data from device
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GetEMLFromBigBuf(data, readlen, 0);
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if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)){
|
|
PrintAndLog("Command execute timeout");
|
|
if ( data )
|
|
free(data);
|
|
return 1;
|
|
}
|
|
|
|
PrintAndLog("\n ## | Data");
|
|
PrintAndLog("-----+-----");
|
|
print_hex_break( data, readlen, 32);
|
|
} else {
|
|
PrintAndLog("failed reading tag");
|
|
}
|
|
} else {
|
|
PrintAndLog("command execution time out");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int CmdLegicLoad(const char *Cmd) {
|
|
|
|
// iceman: potential bug, where all filepaths or filename which starts with H or h will print the helptext :)
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if ( cmdp == 'H' || cmdp == 'h' || cmdp == 0x00) return usage_legic_load();
|
|
|
|
char filename[FILE_PATH_SIZE] = {0x00};
|
|
int len = strlen(Cmd);
|
|
|
|
if (len > FILE_PATH_SIZE) {
|
|
PrintAndLog("Filepath too long (was %s bytes), max allowed is %s ", len, FILE_PATH_SIZE);
|
|
return 0;
|
|
}
|
|
memcpy(filename, Cmd, len);
|
|
|
|
FILE *f = fopen(filename, "r");
|
|
if(!f) {
|
|
PrintAndLog("couldn't open '%s'", Cmd);
|
|
return -1;
|
|
}
|
|
|
|
char line[80];
|
|
int offset = 0;
|
|
uint8_t data[USB_CMD_DATA_SIZE] = {0x00};
|
|
int index = 0;
|
|
int totalbytes = 0;
|
|
while ( fgets(line, sizeof(line), f) ) {
|
|
int res = sscanf(line, "%x %x %x %x %x %x %x %x",
|
|
(unsigned int *)&data[index],
|
|
(unsigned int *)&data[index + 1],
|
|
(unsigned int *)&data[index + 2],
|
|
(unsigned int *)&data[index + 3],
|
|
(unsigned int *)&data[index + 4],
|
|
(unsigned int *)&data[index + 5],
|
|
(unsigned int *)&data[index + 6],
|
|
(unsigned int *)&data[index + 7]);
|
|
|
|
if(res != 8) {
|
|
PrintAndLog("Error: could not read samples");
|
|
fclose(f);
|
|
return -1;
|
|
}
|
|
index += res;
|
|
|
|
if ( index == USB_CMD_DATA_SIZE ){
|
|
// PrintAndLog("sent %d | %d | %d", index, offset, totalbytes);
|
|
UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
|
|
memcpy(c.d.asBytes, data, sizeof(data));
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){
|
|
PrintAndLog("Command execute timeout");
|
|
fclose(f);
|
|
return 1;
|
|
}
|
|
offset += index;
|
|
totalbytes += index;
|
|
index = 0;
|
|
}
|
|
}
|
|
fclose(f);
|
|
|
|
// left over bytes?
|
|
if ( index != 0 ) {
|
|
UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
|
|
memcpy(c.d.asBytes, data, 8);
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){
|
|
PrintAndLog("Command execute timeout");
|
|
return 1;
|
|
}
|
|
totalbytes += index;
|
|
}
|
|
|
|
PrintAndLog("loaded %u samples", totalbytes);
|
|
return 0;
|
|
}
|
|
|
|
int CmdLegicSave(const char *Cmd) {
|
|
int requested = 1024;
|
|
int offset = 0;
|
|
int delivered = 0;
|
|
char filename[FILE_PATH_SIZE] = {0x00};
|
|
uint8_t got[1024] = {0x00};
|
|
|
|
memset(filename, 0, FILE_PATH_SIZE);
|
|
|
|
sscanf(Cmd, " %s %i %i", filename, &requested, &offset);
|
|
|
|
/* If no length given save entire legic read buffer */
|
|
/* round up to nearest 8 bytes so the saved data can be used with legicload */
|
|
if (requested == 0)
|
|
requested = 1024;
|
|
|
|
if (requested % 8 != 0) {
|
|
int remainder = requested % 8;
|
|
requested = requested + 8 - remainder;
|
|
}
|
|
|
|
if (offset + requested > sizeof(got)) {
|
|
PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 1024");
|
|
return 0;
|
|
}
|
|
|
|
GetFromBigBuf(got, requested, offset);
|
|
if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){
|
|
PrintAndLog("Command execute timeout");
|
|
return 1;
|
|
}
|
|
|
|
FILE *f = fopen(filename, "w");
|
|
if(!f) {
|
|
PrintAndLog("couldn't open '%s'", Cmd+1);
|
|
return -1;
|
|
}
|
|
|
|
for (int j = 0; j < requested; j += 8) {
|
|
fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n",
|
|
got[j+0], got[j+1], got[j+2], got[j+3],
|
|
got[j+4], got[j+5], got[j+6], got[j+7]
|
|
);
|
|
delivered += 8;
|
|
if (delivered >= requested) break;
|
|
}
|
|
|
|
fclose(f);
|
|
PrintAndLog("saved %u samples", delivered);
|
|
return 0;
|
|
}
|
|
|
|
//TODO: write a help text (iceman)
|
|
int CmdLegicRfSim(const char *Cmd) {
|
|
UsbCommand c = {CMD_SIMULATE_TAG_LEGIC_RF, {6,3,0}};
|
|
sscanf(Cmd, " %"lli" %"lli" %"lli, &c.arg[0], &c.arg[1], &c.arg[2]);
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
|
|
int CmdLegicRfWrite(const char *Cmd) {
|
|
|
|
// params:
|
|
// offset - in tag memory
|
|
// length - num of bytes to be written
|
|
// IV - initialisation vector
|
|
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_write();
|
|
|
|
uint32_t offset = 0, len = 0, IV = 0;
|
|
|
|
int res = sscanf(Cmd, "%x %x %x", &offset, &len, &IV);
|
|
if(res < 2) {
|
|
PrintAndLog("Please specify the offset and length as two hex strings and, optionally, the IV also as an hex string");
|
|
return -1;
|
|
}
|
|
|
|
// OUT-OF-BOUNDS check
|
|
if ( len + offset > MAX_LENGTH ) {
|
|
len = MAX_LENGTH - offset;
|
|
PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len);
|
|
}
|
|
if ( (IV & 0x7F) != IV ){
|
|
IV &= 0x7F;
|
|
PrintAndLog("Truncating IV to 7bits");
|
|
}
|
|
if ( (IV & 1) == 0 ){
|
|
IV |= 0x01; // IV must be odd
|
|
PrintAndLog("LSB of IV must be SET");
|
|
}
|
|
|
|
UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}};
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
UsbCommand resp;
|
|
if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) {
|
|
uint8_t isOK = resp.arg[0] & 0xFF;
|
|
if ( isOK ) {
|
|
} else {
|
|
PrintAndLog("failed writig tag");
|
|
}
|
|
} else {
|
|
PrintAndLog("command execution time out");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int CmdLegicRfRawWrite(const char *Cmd) {
|
|
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rawwrite();
|
|
|
|
uint32_t offset = 0, data = 0, IV = 0;
|
|
char answer;
|
|
|
|
int res = sscanf(Cmd, "%x %x %x", &offset, &data, &IV);
|
|
if(res < 2)
|
|
return usage_legic_rawwrite();
|
|
|
|
// OUT-OF-BOUNDS check
|
|
if ( offset > MAX_LENGTH ) {
|
|
PrintAndLog("Out-of-bound, offset");
|
|
return 1;
|
|
}
|
|
|
|
if ( (IV & 0x7F) != IV ){
|
|
IV &= 0x7F;
|
|
PrintAndLog("Truncating IV to 7bits");
|
|
}
|
|
if ( (IV & 1) == 0 ){
|
|
IV |= 0x01; // IV must be odd
|
|
PrintAndLog("LSB of IV must be SET");
|
|
}
|
|
|
|
UsbCommand c = { CMD_RAW_WRITER_LEGIC_RF, {offset, data, IV} };
|
|
|
|
if (c.arg[0] == 0x05 || c.arg[0] == 0x06) {
|
|
PrintAndLog("############# DANGER !! #############");
|
|
PrintAndLog("# changing the DCF is irreversible #");
|
|
PrintAndLog("#####################################");
|
|
PrintAndLog("do youe really want to continue? y(es) n(o)");
|
|
if (scanf(" %c", &answer) > 0 && (answer == 'y' || answer == 'Y')) {
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
|
|
//TODO: write a help text (iceman)
|
|
int CmdLegicRfFill(const char *Cmd) {
|
|
UsbCommand cmd = {CMD_WRITER_LEGIC_RF, {0,0,0} };
|
|
int res = sscanf(Cmd, " 0x%"llx" 0x%"llx" 0x%"llx, &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]);
|
|
if(res != 3) {
|
|
PrintAndLog("Please specify the offset, length and value as two hex strings");
|
|
return -1;
|
|
}
|
|
|
|
int i;
|
|
UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}};
|
|
memset(c.d.asBytes, cmd.arg[2], 48);
|
|
|
|
for(i = 0; i < 22; i++) {
|
|
c.arg[0] = i*48;
|
|
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
WaitForResponse(CMD_ACK, NULL);
|
|
}
|
|
clearCommandBuffer();
|
|
SendCommand(&cmd);
|
|
return 0;
|
|
}
|
|
|
|
void static calc4(uint8_t *cmd, uint8_t len){
|
|
crc_t crc;
|
|
//crc_init_ref(&crc, 4, 0x19 >> 1, 0x5, 0, TRUE, TRUE);
|
|
crc_init(&crc, 4, 0x19 >> 1, 0x5, 0);
|
|
|
|
crc_clear(&crc);
|
|
crc_update(&crc, 1, 1); /* CMD_READ */
|
|
crc_update(&crc, cmd[0], 8);
|
|
crc_update(&crc, cmd[1], 8);
|
|
printf("crc4 %X\n", reflect(crc_finish(&crc), 4) ) ;
|
|
|
|
crc_clear(&crc);
|
|
crc_update(&crc, 1, 1); /* CMD_READ */
|
|
crc_update(&crc, cmd[0], 8);
|
|
crc_update(&crc, cmd[1], 8);
|
|
printf("crc4 %X\n", crc_finish(&crc) ) ;
|
|
|
|
printf("---- old ---\n");
|
|
crc_update2(&crc, 1, 1); /* CMD_READ */
|
|
crc_update2(&crc, cmd[0], 8);
|
|
crc_update2(&crc, cmd[1], 8);
|
|
printf("crc4 %X \n", reflect(crc_finish(&crc), 4) ) ;
|
|
|
|
|
|
crc_clear(&crc);
|
|
crc_update2(&crc, 1, 1); /* CMD_READ */
|
|
crc_update2(&crc, cmd[0], 8);
|
|
crc_update2(&crc, cmd[1], 8);
|
|
printf("crc4 %X\n", crc_finish(&crc) ) ;
|
|
}
|
|
|
|
int CmdLegicCalcCrc8(const char *Cmd){
|
|
|
|
uint8_t *data = NULL;
|
|
uint8_t cmdp = 0, uidcrc = 0, type=0;
|
|
bool errors = false;
|
|
int len = 0;
|
|
int bg, en;
|
|
|
|
while(param_getchar(Cmd, cmdp) != 0x00) {
|
|
switch(param_getchar(Cmd, cmdp)) {
|
|
case 'b':
|
|
case 'B':
|
|
// peek at length of the input string so we can
|
|
// figure out how many elements to malloc in "data"
|
|
bg=en=0;
|
|
if (param_getptr(Cmd, &bg, &en, cmdp+1)) {
|
|
errors = true;
|
|
break;
|
|
}
|
|
len = (en - bg + 1);
|
|
|
|
// check that user entered even number of characters
|
|
// for hex data string
|
|
if (len & 1) {
|
|
errors = true;
|
|
break;
|
|
}
|
|
|
|
// it's possible for user to accidentally enter "b" parameter
|
|
// more than once - we have to clean previous malloc
|
|
if (data) free(data);
|
|
data = malloc(len >> 1);
|
|
if ( data == NULL ) {
|
|
PrintAndLog("Can't allocate memory. exiting");
|
|
errors = true;
|
|
break;
|
|
}
|
|
|
|
if (param_gethex(Cmd, cmdp+1, data, len)) {
|
|
errors = true;
|
|
break;
|
|
}
|
|
|
|
len >>= 1;
|
|
cmdp += 2;
|
|
break;
|
|
case 'u':
|
|
case 'U':
|
|
uidcrc = param_get8ex(Cmd, cmdp+1, 0, 16);
|
|
cmdp += 2;
|
|
break;
|
|
case 'c':
|
|
case 'C':
|
|
type = param_get8ex(Cmd, cmdp+1, 0, 10);
|
|
cmdp += 2;
|
|
break;
|
|
case 'h':
|
|
case 'H':
|
|
errors = true;
|
|
break;
|
|
default:
|
|
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
|
|
errors = true;
|
|
break;
|
|
}
|
|
if (errors) break;
|
|
}
|
|
//Validations
|
|
if (errors){
|
|
if (data) free(data);
|
|
return usage_legic_calccrc8();
|
|
}
|
|
|
|
switch (type){
|
|
case 16:
|
|
PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc));
|
|
break;
|
|
case 4:
|
|
calc4(data, 0);
|
|
break;
|
|
default:
|
|
PrintAndLog("Legic crc8: %X", CRC8Legic(data, len) );
|
|
break;
|
|
}
|
|
|
|
if (data) free(data);
|
|
return 0;
|
|
}
|
|
|
|
int HFLegicReader(const char *Cmd, bool verbose) {
|
|
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info();
|
|
|
|
UsbCommand c = {CMD_LEGIC_INFO, {0,0,0}};
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
UsbCommand resp;
|
|
if (!WaitForResponseTimeout(CMD_ACK, &resp, 500)) {
|
|
if ( verbose ) PrintAndLog("command execution time out");
|
|
return 1;
|
|
}
|
|
|
|
uint8_t isOK = resp.arg[0] & 0xFF;
|
|
if ( !isOK ) {
|
|
if ( verbose ) PrintAndLog("legic card select failed");
|
|
return 1;
|
|
}
|
|
|
|
legic_card_select_t card;
|
|
memcpy(&card, (legic_card_select_t *)resp.d.asBytes, sizeof(legic_card_select_t));
|
|
|
|
PrintAndLog(" UID : %s", sprint_hex(card.uid, sizeof(card.uid)));
|
|
switch(card.cardsize) {
|
|
case 22:
|
|
case 256:
|
|
case 1024:
|
|
PrintAndLog(" TYPE : MIM%d card (%d bytes)", card.cardsize, card.cardsize); break;
|
|
default: {
|
|
PrintAndLog("Unknown card format: %d", card.cardsize);
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
int CmdLegicReader(const char *Cmd){
|
|
return HFLegicReader(Cmd, TRUE);
|
|
}
|
|
|
|
int CmdLegicDump(const char *Cmd){
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_dump();
|
|
return 0;
|
|
}
|
|
|
|
static command_t CommandTable[] = {
|
|
{"help", CmdHelp, 1, "This help"},
|
|
{"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and Type tag info"},
|
|
{"info", CmdLegicInfo, 0, "Display deobfuscated and decoded LEGIC Prime tag data"},
|
|
{"dump", CmdLegicDump, 0, "Dump LEGIC Prime card to binary file"},
|
|
{"rdmem", CmdLegicRFRead, 0, "[offset][length] <iv> -- read bytes from a LEGIC card"},
|
|
{"save", CmdLegicSave, 0, "<filename> [<length>] -- Store samples"},
|
|
{"load", CmdLegicLoad, 0, "<filename> -- Restore samples"},
|
|
{"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"},
|
|
{"write", CmdLegicRfWrite, 0, "<offset> <length> <iv> -- Write sample buffer (user after load or read)"},
|
|
{"writeraw",CmdLegicRfRawWrite, 0, "<address> <value> <iv> -- Write direct to address"},
|
|
{"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
|
|
{"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"},
|
|
{NULL, NULL, 0, NULL}
|
|
};
|
|
|
|
int CmdHFLegic(const char *Cmd) {
|
|
clearCommandBuffer();
|
|
CmdsParse(CommandTable, Cmd);
|
|
return 0;
|
|
}
|
|
|
|
int CmdHelp(const char *Cmd) {
|
|
CmdsHelp(CommandTable);
|
|
return 0;
|
|
} |