- //-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
#include <inttypes.h>
#include "proxmark3.h"
#include "ui.h"
+#include "util.h"
#include "graph.h"
-#include "cmdmain.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdlf.h"
#include "cmdlfem4x.h"
-#include "util.h"
-#include "data.h"
-#define LF_TRACE_BUFF_SIZE 12000
-#define LF_BITSSTREAM_LEN 1000
-
char *global_em410xId;
static int CmdHelp(const char *Cmd);
+int CmdEMdemodASK(const char *Cmd)
+{
+ char cmdp = param_getchar(Cmd, 0);
+ int findone = (cmdp == '1') ? 1 : 0;
+ UsbCommand c={CMD_EM410X_DEMOD};
+ c.arg[0]=findone;
+ SendCommand(&c);
+ return 0;
+}
+
/* Read the ID of an EM410x tag.
* Format:
* 1111 1111 1 <-- standard non-repeatable header
{
int i, j, clock, header, rows, bit, hithigh, hitlow, first, bit2idx, high, low;
int parity[4];
- char id[11];
- char id2[11];
+ char id[11] = {0x00};
+ char id2[11] = {0x00};
int retested = 0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN];
high = low = 0;
}
/* get clock */
- clock = GetClock(Cmd, high, 0);
-
+ clock = GetAskClock(Cmd, false, false);
+
/* parity for our 4 columns */
parity[0] = parity[1] = parity[2] = parity[3] = 0;
header = rows = 0;
- /* manchester demodulate */
+ // manchester demodulate
bit = bit2idx = 0;
for (i = 0; i < (int)(GraphTraceLen / clock); i++)
{
/* Find out if we hit both high and low peaks */
for (j = 0; j < clock; j++)
{
- if (GraphBuffer[(i * clock) + j] == high)
+ if (GraphBuffer[(i * clock) + j] >= high)
hithigh = 1;
- else if (GraphBuffer[(i * clock) + j] == low)
+ else if (GraphBuffer[(i * clock) + j] <= low)
hitlow = 1;
/* it doesn't count if it's the first part of our read
retest:
/* We go till 5 before the graph ends because we'll get that far below */
- for (i = 0; i < bit2idx - 5; i++)
+ for (i = 1; i < bit2idx - 5; i++)
{
/* Step 2: We have our header but need our tag ID */
if (header == 9 && rows < 10)
PrintAndLog("Thought we had a valid tag but failed at word %d (i=%d)", rows + 1, i);
/* Start back rows * 5 + 9 header bits, -1 to not start at same place */
- i -= 9 + (5 * rows) -5;
+ i -= 9 + (5 * rows) - 5;
rows = header = 0;
}
}
/* if we've already retested after flipping bits, return */
- if (retested++){
+ if (retested++){
+ PrintAndLog("Failed to decode");
return 0;
}
* 0 <-- stop bit, end of tag
*/
int CmdEM410xSim(const char *Cmd)
-{
+{
int i, n, j, binary[4], parity[4];
char cmdp = param_getchar(Cmd, 0);
uint8_t uid[5] = {0x00};
if (cmdp == 'h' || cmdp == 'H') {
- PrintAndLog("Usage: lf em4x sim <UID>");
+ PrintAndLog("Usage: lf em4x 410xsim <UID>");
PrintAndLog("");
- PrintAndLog(" sample: lf em4x sim 0F0368568B");
+ PrintAndLog(" sample: lf em4x 410xsim 0F0368568B");
return 0;
}
PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X", uid[0],uid[1],uid[2],uid[3],uid[4]);
PrintAndLog("Press pm3-button to about simulation");
-
+
/* clock is 64 in EM410x tags */
int clock = 64;
/* clear our graph */
ClearGraph(0);
-
+
/* write 9 start bits */
for (i = 0; i < 9; i++)
AppendGraph(0, clock, 1);
AppendGraph(0, clock, parity[2]);
AppendGraph(0, clock, parity[3]);
- /* stop bit */
- AppendGraph(0, clock, 0);
+ /* stop bit */
+ AppendGraph(1, clock, 0);
- //CmdManchesterMod("64");
-
- /* booyah! */
- RepaintGraphWindow();
-
- CmdLFSim("");
+ CmdLFSim("0"); //240 start_gap.
return 0;
}
*/
int CmdEM410xWatch(const char *Cmd)
{
- int read_h = (*Cmd == 'h');
- do
- {
+ char cmdp = param_getchar(Cmd, 0);
+ int read_h = (cmdp == 'h');
+ do {
if (ukbhit()) {
printf("\naborted via keyboard!\n");
break;
}
CmdLFRead(read_h ? "h" : "");
- CmdSamples("6000");
-
+ CmdSamples("6000");
} while (
!CmdEM410xRead("")
);
int CmdReadWord(const char *Cmd)
{
int Word = -1; //default to invalid word
- UsbCommand c;
+ UsbCommand c;
- sscanf(Cmd, "%d", &Word);
+ sscanf(Cmd, "%d", &Word);
if ( (Word > 15) | (Word < 0) ) {
- PrintAndLog("Word must be between 0 and 15");
- return 1;
- }
+ PrintAndLog("Word must be between 0 and 15");
+ return 1;
+ }
- PrintAndLog("Reading word %d", Word);
+ PrintAndLog("Reading word %d", Word);
- c.cmd = CMD_EM4X_READ_WORD;
- c.d.asBytes[0] = 0x0; //Normal mode
- c.arg[0] = 0;
- c.arg[1] = Word;
- c.arg[2] = 0;
- SendCommand(&c);
- WaitForResponse(CMD_ACK, NULL);
-
- uint8_t data[LF_TRACE_BUFF_SIZE] = {0x00};
-
- GetFromBigBuf(data,LF_TRACE_BUFF_SIZE,3560); //3560 -- should be offset..
- WaitForResponseTimeout(CMD_ACK,NULL, 1500);
-
- for (int j = 0; j < LF_TRACE_BUFF_SIZE; j++) {
- GraphBuffer[j] = ((int)data[j]);
- }
- GraphTraceLen = LF_TRACE_BUFF_SIZE;
-
- uint8_t bits[LF_BITSSTREAM_LEN] = {0x00};
- uint8_t * bitstream = bits;
- manchester_decode(GraphBuffer, LF_TRACE_BUFF_SIZE, bitstream,LF_BITSSTREAM_LEN);
- RepaintGraphWindow();
+ c.cmd = CMD_EM4X_READ_WORD;
+ c.d.asBytes[0] = 0x0; //Normal mode
+ c.arg[0] = 0;
+ c.arg[1] = Word;
+ c.arg[2] = 0;
+ SendCommand(&c);
return 0;
}
int CmdReadWordPWD(const char *Cmd)
{
int Word = -1; //default to invalid word
- int Password = 0xFFFFFFFF; //default to blank password
- UsbCommand c;
-
- sscanf(Cmd, "%d %x", &Word, &Password);
-
+ int Password = 0xFFFFFFFF; //default to blank password
+ UsbCommand c;
+
+ sscanf(Cmd, "%d %x", &Word, &Password);
+
if ( (Word > 15) | (Word < 0) ) {
- PrintAndLog("Word must be between 0 and 15");
- return 1;
- }
+ PrintAndLog("Word must be between 0 and 15");
+ return 1;
+ }
- PrintAndLog("Reading word %d with password %08X", Word, Password);
-
- c.cmd = CMD_EM4X_READ_WORD;
- c.d.asBytes[0] = 0x1; //Password mode
- c.arg[0] = 0;
- c.arg[1] = Word;
- c.arg[2] = Password;
- SendCommand(&c);
- WaitForResponse(CMD_ACK, NULL);
-
- uint8_t data[LF_TRACE_BUFF_SIZE] = {0x00};
-
- GetFromBigBuf(data,LF_TRACE_BUFF_SIZE,3560); //3560 -- should be offset..
- WaitForResponseTimeout(CMD_ACK,NULL, 1500);
-
- for (int j = 0; j < LF_TRACE_BUFF_SIZE; j++) {
- GraphBuffer[j] = ((int)data[j]);
- }
- GraphTraceLen = LF_TRACE_BUFF_SIZE;
-
- uint8_t bits[LF_BITSSTREAM_LEN] = {0x00};
- uint8_t * bitstream = bits;
- manchester_decode(GraphBuffer, LF_TRACE_BUFF_SIZE, bitstream, LF_BITSSTREAM_LEN);
- RepaintGraphWindow();
+ PrintAndLog("Reading word %d with password %08X", Word, Password);
+
+ c.cmd = CMD_EM4X_READ_WORD;
+ c.d.asBytes[0] = 0x1; //Password mode
+ c.arg[0] = 0;
+ c.arg[1] = Word;
+ c.arg[2] = Password;
+ SendCommand(&c);
return 0;
}
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
-
- {"410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"},
- {"410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
- {"replay", MWRem4xReplay, 0, "Watches for tag and simulates manchester encoded em4x tag"},
- {"410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
- {"410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
- {"410xwrite", CmdEM410xWrite, 1, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
- {"4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
- {"rd", CmdReadWord, 1, "<Word 1-15> -- Read EM4xxx word data"},
- {"rdpwd", CmdReadWordPWD, 1, "<Word 1-15> <Password> -- Read EM4xxx word data in password mode "},
- {"wr", CmdWriteWord, 1, "<Data> <Word 1-15> -- Write EM4xxx word data"},
- {"wrpwd", CmdWriteWordPWD, 1, "<Data> <Word 1-15> <Password> -- Write EM4xxx word data in password mode"},
+ {"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
+ {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag"},
+ {"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
+ {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
+ {"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
+ {"em410xwrite", CmdEM410xWrite, 1, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
+ {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
+ {"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
+ {"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
+ {"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
+ {"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
{NULL, NULL, 0, NULL}
};
-
-//Confirms the parity of a bitstream as well as obtaining the data (TagID) from within the appropriate memory space.
-//Arguments:
-// Pointer to a string containing the desired bitsream
-// Pointer to a string that will receive the decoded tag ID
-// Length of the bitsream pointed at in the first argument, char* _strBitStream
-//Retuns:
-//1 Parity confirmed
-//0 Parity not confirmed
-int ConfirmEm410xTagParity( char* _strBitStream, char* pID, int LengthOfBitstream )
-{
- int i = 0;
- int rows = 0;
- int Parity[4] = {0x00};
- char ID[11] = {0x00};
- int k = 0;
- int BitStream[70] = {0x00};
- int counter = 0;
- //prepare variables
- for ( i = 0; i <= LengthOfBitstream; i++)
- {
- if (_strBitStream[i] == '1')
- {
- k =1;
- memcpy(&BitStream[i], &k,4);
- }
- else if (_strBitStream[i] == '0')
- {
- k = 0;
- memcpy(&BitStream[i], &k,4);
- }
- }
- while ( counter < 2 )
- {
- //set/reset variables and counters
- memset(ID,0x00,sizeof(ID));
- memset(Parity,0x00,sizeof(Parity));
- rows = 0;
- for ( i = 9; i <= LengthOfBitstream; i++)
- {
- if ( rows < 10 )
- {
- if ((BitStream[i] ^ BitStream[i+1] ^ BitStream[i+2] ^ BitStream[i+3]) == BitStream[i+4])
- {
- sprintf(ID+rows, "%x", (8 * BitStream[i]) + (4 * BitStream[i+1]) + (2 * BitStream[i+2]) + (1 * BitStream[i+3]));
- rows++;
- /* Keep parity info and move four bits ahead*/
- Parity[0] ^= BitStream[i];
- Parity[1] ^= BitStream[i+1];
- Parity[2] ^= BitStream[i+2];
- Parity[3] ^= BitStream[i+3];
- i += 4;
- }
- }
- if ( rows == 10 )
- {
- if ( BitStream[i] == Parity[0] && BitStream[i+1] == Parity[1] &&
- BitStream[i+2] == Parity[2] && BitStream[i+3] == Parity[3] &&
- BitStream[i+4] == 0)
- {
- memcpy(pID,ID,strlen(ID));
- return 1;
- }
- }
- }
- printf("[PARITY ->]Failed. Flipping Bits, and rechecking parity for bitstream:\n[PARITY ->]");
- for (k = 0; k < LengthOfBitstream; k++)
- {
- BitStream[k] ^= 1;
- printf("%i", BitStream[k]);
- }
- puts(" ");
- counter++;
- }
- return 0;
-}
-//Reads and demodulates an em410x RFID tag. It further allows slight modification to the decoded bitstream
-//Once a suitable bitstream has been identified, and if needed, modified, it is replayed. Allowing emulation of the
-//"stolen" rfid tag.
-//No meaningful returns or arguments.
-int MWRem4xReplay(const char* Cmd)
-{
- // //header traces
- // static char ArrayTraceZero[] = { '0','0','0','0','0','0','0','0','0' };
- // static char ArrayTraceOne[] = { '1','1','1','1','1','1','1','1','1' };
- // //local string variables
- // char strClockRate[10] = {0x00};
- // char strAnswer[4] = {0x00};
- // char strTempBufferMini[2] = {0x00};
- // //our outbound bit-stream
- // char strSimulateBitStream[65] = {0x00};
- // //integers
- // int iClockRate = 0;
- // int needle = 0;
- // int j = 0;
- // int iFirstHeaderOffset = 0x00000000;
- // int numManchesterDemodBits=0;
- // //boolean values
- // bool bInverted = false;
- // //pointers to strings. memory will be allocated.
- // char* pstrInvertBitStream = 0x00000000;
- // char* pTempBuffer = 0x00000000;
- // char* pID = 0x00000000;
- // char* strBitStreamBuffer = 0x00000000;
-
-
- // puts("###################################");
- // puts("#### Em4x Replay ##");
- // puts("#### R.A.M. June 2013 ##");
- // puts("###################################");
- // //initialize
- // CmdLFRead("");
- // //Collect ourselves 10,000 samples
- // CmdSamples("10000");
- // puts("[->]preforming ASK demodulation\n");
- // //demodulate ask
- // Cmdaskdemod("0");
- // iClockRate = DetectClock(0);
- // sprintf(strClockRate, "%i\n",iClockRate);
- // printf("[->]Detected ClockRate: %s\n", strClockRate);
-
- // //If detected clock rate is something completely unreasonable, dont go ahead
- // if ( iClockRate < 0xFFFE )
- // {
- // pTempBuffer = (char*)malloc(MAX_GRAPH_TRACE_LEN);
- // if (pTempBuffer == 0x00000000)
- // return 0;
- // memset(pTempBuffer,0x00,MAX_GRAPH_TRACE_LEN);
- // //Preform manchester de-modulation and display in a single line.
- // numManchesterDemodBits = CmdManchesterDemod( strClockRate );
- // //note: numManchesterDemodBits is set above in CmdManchesterDemod()
- // if ( numManchesterDemodBits == 0 )
- // return 0;
- // strBitStreamBuffer = malloc(numManchesterDemodBits+1);
- // if ( strBitStreamBuffer == 0x00000000 )
- // return 0;
- // memset(strBitStreamBuffer, 0x00, (numManchesterDemodBits+1));
- // //fill strBitStreamBuffer with demodulated, string formatted bits.
- // for ( j = 0; j <= numManchesterDemodBits; j++ )
- // {
- // sprintf(strTempBufferMini, "%i",BitStream[j]);
- // strcat(strBitStreamBuffer,strTempBufferMini);
- // }
- // printf("[->]Demodulated Bitstream: \n%s\n", strBitStreamBuffer);
- // //Reset counter and select most probable bit stream
- // j = 0;
- // while ( j < numManchesterDemodBits )
- // {
- // memset(strSimulateBitStream,0x00,64);
- // //search for header of nine (9) 0's : 000000000 or nine (9) 1's : 1111 1111 1
- // if ( ( strncmp(strBitStreamBuffer+j, ArrayTraceZero, sizeof(ArrayTraceZero)) == 0 ) ||
- // ( strncmp(strBitStreamBuffer+j, ArrayTraceOne, sizeof(ArrayTraceOne)) == 0 ) )
- // {
- // iFirstHeaderOffset = j;
- // memcpy(strSimulateBitStream, strBitStreamBuffer+j,64);
- // printf("[->]Offset of Header");
- // if ( strncmp(strBitStreamBuffer+iFirstHeaderOffset, "0", 1) == 0 )
- // printf("'%s'", ArrayTraceZero );
- // else
- // printf("'%s'", ArrayTraceOne );
- // printf(": %i\nHighlighted string : %s\n",iFirstHeaderOffset,strSimulateBitStream);
- // //allow us to escape loop or choose another frame
- // puts("[<-]Are we happy with this sample? [Y]es/[N]o");
- // gets(strAnswer);
- // if ( ( strncmp(strAnswer,"y",1) == 0 ) || ( strncmp(strAnswer,"Y",1) == 0 ) )
- // {
- // j = numManchesterDemodBits+1;
- // break;
- // }
- // }
- // j++;
- // }
- // }
- // else return 0;
-
- // //Do we want the buffer inverted?
- // memset(strAnswer, 0x00, sizeof(strAnswer));
- // printf("[<-]Do you wish to invert the highlighted bitstream? [Y]es/[N]o\n");
- // gets(strAnswer);
- // if ( ( strncmp("y", strAnswer,1) == 0 ) || ( strncmp("Y", strAnswer, 1 ) == 0 ) )
- // {
- // //allocate heap memory
- // pstrInvertBitStream = (char*)malloc(numManchesterDemodBits);
- // if ( pstrInvertBitStream != 0x00000000 )
- // {
- // memset(pstrInvertBitStream,0x00,numManchesterDemodBits);
- // bInverted = true;
- // //Invert Bitstream
- // for ( needle = 0; needle <= numManchesterDemodBits; needle++ )
- // {
- // if (strSimulateBitStream[needle] == '0')
- // strcat(pstrInvertBitStream,"1");
- // else if (strSimulateBitStream[needle] == '1')
- // strcat(pstrInvertBitStream,"0");
- // }
- // printf("[->]Inverted bitstream: %s\n", pstrInvertBitStream);
- // }
- // }
- // //Confirm parity of selected string
- // pID = (char*)malloc(11);
- // if (pID != 0x00000000)
- // {
- // memset(pID, 0x00, 11);
- // if (ConfirmEm410xTagParity(strSimulateBitStream,pID, 64) == 1)
- // {
- // printf("[->]Parity confirmed for selected bitstream!\n");
- // printf("[->]Tag ID was detected as: [hex]:%s\n",pID );
- // }
- // else
- // printf("[->]Parity check failed for the selected bitstream!\n");
- // }
-
- // //Spoof
- // memset(strAnswer, 0x00, sizeof(strAnswer));
- // printf("[<-]Do you wish to continue with the EM4x simulation? [Y]es/[N]o\n");
- // gets(strAnswer);
- // if ( ( strncmp(strAnswer,"y",1) == 0 ) || ( strncmp(strAnswer,"Y",1) == 0 ) )
- // {
- // strcat(pTempBuffer, strClockRate);
- // strcat(pTempBuffer, " ");
- // if (bInverted == true)
- // strcat(pTempBuffer,pstrInvertBitStream);
- // if (bInverted == false)
- // strcat(pTempBuffer,strSimulateBitStream);
- // //inform the user
- // puts("[->]Starting simulation now: \n");
- // //Simulate tag with prepared buffer.
- // CmdLFSimManchester(pTempBuffer);
- // }
- // else if ( ( strcmp("n", strAnswer) == 0 ) || ( strcmp("N", strAnswer ) == 0 ) )
- // printf("[->]Exiting procedure now...\n");
- // else
- // printf("[->]Erroneous selection\nExiting procedure now....\n");
-
- // //Clean up -- Exit function
- // //clear memory, then release pointer.
- // if ( pstrInvertBitStream != 0x00000000 )
- // {
- // memset(pstrInvertBitStream,0x00,numManchesterDemodBits);
- // free(pstrInvertBitStream);
- // }
- // if ( pTempBuffer != 0x00000000 )
- // {
- // memset(pTempBuffer,0x00,MAX_GRAPH_TRACE_LEN);
- // free(pTempBuffer);
- // }
- // if ( pID != 0x00000000 )
- // {
- // memset(pID,0x00,11);
- // free(pID);
- // }
- // if ( strBitStreamBuffer != 0x00000000 )
- // {
- // memset(strBitStreamBuffer,0x00,numManchesterDemodBits);
- // free(strBitStreamBuffer);
- // }
- return 0;
-}
-
int CmdLFEM4X(const char *Cmd)
{
CmdsParse(CommandTable, Cmd);
projects / proxmark3-svn / blobdiff