github/proxmark3
1
0
Fork 0
mirror of https://github.com/Proxmark/proxmark3.git synced 2025-08-19 21:03:23 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

MAJOR update, added hitag2 reader, emulation and eavesdropping, lots of new code, including FPGA tweaks

Browse source
This commit is contained in:
roel@libnfc.org 2012-09-18 13:52:50 +00:00
commit db09cb3adb
11 changed files with 277 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

203
client/cmdlfhitag.c Normal file
View file

@ -0,0 +1,203 @@
//-----------------------------------------------------------------------------
// Copyright (C) 2012 Roel Verdult
//
// 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 Hitag support
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "data.h"
#include "proxusb.h"
#include "ui.h"
#include "cmdparser.h"
#include "common.h"
#include "util.h"
#include "hitag2.h"
static int CmdHelp(const char *Cmd);
int CmdLFHitagList(const char *Cmd)
{
uint8_t got[3000];
GetFromBigBuf(got,sizeof(got),0);
PrintAndLog("recorded activity:");
PrintAndLog(" ETU :rssi: who bytes");
PrintAndLog("---------+----+----+-----------");
int i = 0;
int prev = -1;
for (;;) {
if(i >= 1900) {
break;
}
bool isResponse;
int timestamp = *((uint32_t *)(got+i));
if (timestamp & 0x80000000) {
timestamp &= 0x7fffffff;
isResponse = 1;
} else {
isResponse = 0;
}
int metric = 0;
int parityBits = *((uint32_t *)(got+i+4));
// 4 bytes of additional information...
// maximum of 32 additional parity bit information
//
// TODO:
// at each quarter bit period we can send power level (16 levels)
// or each half bit period in 256 levels.
int len = got[i+8];
if (len > 100) {
break;
}
if (i + len >= 1900) {
break;
}
uint8_t *frame = (got+i+9);
// Break and stick with current result if buffer was not completely full
if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
char line[1000] = "";
int j;
for (j = 0; j < len; j++) {
int oddparity = 0x01;
int k;
for (k=0;k<8;k++) {
oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
}
//if((parityBits >> (len - j - 1)) & 0x01) {
if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
sprintf(line+(j*4), "%02x! ", frame[j]);
}
else {
sprintf(line+(j*4), "%02x ", frame[j]);
}
}
char metricString[100];
if (isResponse) {
sprintf(metricString, "%3d", metric);
} else {
strcpy(metricString, " ");
}
PrintAndLog(" +%7d: %s: %s %s",
(prev < 0 ? 0 : (timestamp - prev)),
metricString,
(isResponse ? "TAG" : " "),
line);
prev = timestamp;
i += (len + 9);
}
return 0;
}
int CmdLFHitagSnoop(const char *Cmd) {
UsbCommand c = {CMD_SNOOP_HITAG};
SendCommand(&c);
return 0;
}
int CmdLFHitagSim(const char *Cmd) {
UsbCommand c = {CMD_SIMULATE_HITAG};
char filename[256];
FILE* pf;
bool tag_mem_supplied;
param_getstr(Cmd,0,filename);
if (strlen(filename) > 0) {
if ((pf = fopen(filename,"rb+")) == NULL) {
PrintAndLog("Error: Could not open file [%s]",filename);
return 1;
}
tag_mem_supplied = true;
fread(c.d.asBytes,48,1,pf);
fclose(pf);
} else {
tag_mem_supplied = false;
}
// Does the tag comes with memory
c.arg[0] = (uint32_t)tag_mem_supplied;
SendCommand(&c);
return 0;
}
int CmdLFHitagReader(const char *Cmd) {
// UsbCommand c = {CMD_READER_HITAG};
// param_get32ex(Cmd,1,0,16);
UsbCommand c = {CMD_READER_HITAG};//, {param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),param_get32ex(Cmd,3,0,16)}};
hitag_data* htd = (hitag_data*)c.d.asBytes;
hitag_function htf = param_get32ex(Cmd,0,0,10);
switch (htf) {
case RHT2F_PASSWORD: {
num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
} break;
case RHT2F_AUTHENTICATE: {
num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
} break;
case RHT2F_TEST_AUTH_ATTEMPTS: {
// No additional parameters needed
} break;
default: {
PrintAndLog("Error: unkown reader function %d",htf);
PrintAndLog("Hitag reader functions",htf);
PrintAndLog(" HitagS (0*)",htf);
PrintAndLog(" Hitag1 (1*)",htf);
PrintAndLog(" Hitag2 (2*)",htf);
PrintAndLog(" 21 <password> (password mode)",htf);
PrintAndLog(" 22 <nr> <ar> (authentication)",htf);
PrintAndLog(" 25 (test recorded authentications)",htf);
return 1;
} break;
}
// Copy the hitag2 function into the first argument
c.arg[0] = htf;
SendCommand(&c);
return 0;
}
static command_t CommandTableHitag[] =
{
{"help", CmdHelp, 1, "This help"},
{"list", CmdLFHitagList, 1, "List Hitag trace history"},
{"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
{"sim", CmdLFHitagSim, 1, "Simulate Hitag transponder"},
{"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
{NULL, NULL, 0, NULL}
};
int CmdLFHitag(const char *Cmd)
{
CmdsParse(CommandTableHitag, Cmd);
return 0;
}
int CmdHelp(const char *Cmd)
{
CmdsHelp(CommandTableHitag);
return 0;
}