//
//-----------------------------------------------------------------------------
-#include "proxmark3.h"
#include "apps.h"
-#include "util.h"
-#include "string.h"
-#include "common.h"
#include "cmd.h"
// Needed for CRC in emulation mode;
// same construction as in ISO 14443;
static int timeout = 4096;
-
static int SendIClassAnswer(uint8_t *resp, int respLen, int delay);
//-----------------------------------------------------------------------------
enum {
STATE_UNSYNCD,
STATE_START_OF_COMMUNICATION,
- STATE_RECEIVING
+ STATE_RECEIVING
} state;
uint16_t shiftReg;
int bitCnt;
SUB_SECOND_HALF,
SUB_BOTH
} sub;
- uint8_t *output;
+ uint8_t *output;
} Demod;
static RAMFUNC int ManchesterDecoding(int v)
if(!(Demod.buffer2 & Demod.syncBit) || !(Demod.buffer3 & Demod.syncBit)) {
Demod.state = DEMOD_UNSYNCD;
error = 0x88;
+ return FALSE;
}
-
+
+ // TODO: use this error value to print? Ask Holiman.
+ // 2016-01-08 iceman
}
error = 0;
-
}
}
else {
//-----------------------------------------------------------------------------
void RAMFUNC SnoopIClass(void)
{
-
-
// We won't start recording the frames that we acquire until we trigger;
// a good trigger condition to get started is probably when we see a
// response from the tag.
// The DMA buffer, used to stream samples from the FPGA
uint8_t *dmaBuf = BigBuf_malloc(DMA_BUFFER_SIZE);
- set_tracing(TRUE);
clear_trace();
+ set_tracing(TRUE);
+
iso14a_set_trigger(FALSE);
- int lastRxCounter;
+ int lastRxCounter;
uint8_t *upTo;
int smpl;
int maxBehindBy = 0;
FpgaSetupSsc();
upTo = dmaBuf;
lastRxCounter = DMA_BUFFER_SIZE;
- FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);
+ // Setup and start DMA.
+ if ( !FpgaSetupSscDma((uint8_t*) dmaBuf, DMA_BUFFER_SIZE) ){
+ if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
+ return;
+ }
// And the reader -> tag commands
memset(&Uart, 0, sizeof(Uart));
for(;;) {
LED_A_ON();
WDT_HIT();
- int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) &
- (DMA_BUFFER_SIZE-1);
- if(behindBy > maxBehindBy) {
+ int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) & (DMA_BUFFER_SIZE-1);
+
+ if ( behindBy > maxBehindBy) {
maxBehindBy = behindBy;
- if(behindBy > (9 * DMA_BUFFER_SIZE / 10)) {
+ if ( behindBy > (9 * DMA_BUFFER_SIZE / 10)) {
Dbprintf("blew circular buffer! behindBy=0x%x", behindBy);
goto done;
}
}
- if(behindBy < 1) continue;
+ if( behindBy < 1) continue;
- LED_A_OFF();
+ LED_A_OFF();
smpl = upTo[0];
upTo++;
lastRxCounter -= 1;
- if(upTo - dmaBuf > DMA_BUFFER_SIZE) {
+ if (upTo - dmaBuf > DMA_BUFFER_SIZE) {
upTo -= DMA_BUFFER_SIZE;
lastRxCounter += DMA_BUFFER_SIZE;
AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) upTo;
}
//samples += 4;
- samples += 1;
+ samples += 1;
- if(smpl & 0xF) {
- decbyte ^= (1 << (3 - div));
- }
+ if(smpl & 0xF)
+ decbyte ^= (1 << (3 - div));
+
- // FOR READER SIDE COMMUMICATION...
+ // FOR READER SIDE COMMUMICATION...
- decbyter <<= 2;
- decbyter ^= (smpl & 0x30);
+ decbyter <<= 2;
+ decbyter ^= (smpl & 0x30);
- div++;
+ ++div;
- if((div + 1) % 2 == 0) {
- smpl = decbyter;
- if(OutOfNDecoding((smpl & 0xF0) >> 4)) {
- rsamples = samples - Uart.samples;
- time_stop = (GetCountSspClk()-time_0) << 4;
- LED_C_ON();
-
- //if(!LogTrace(Uart.output,Uart.byteCnt, rsamples, Uart.parityBits,TRUE)) break;
- //if(!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, TRUE)) break;
- if(tracing) {
- uint8_t parity[MAX_PARITY_SIZE];
- GetParity(Uart.output, Uart.byteCnt, parity);
- LogTrace(Uart.output,Uart.byteCnt, time_start, time_stop, parity, TRUE);
- }
-
+ if (( div + 1) % 2 == 0) {
+ smpl = decbyter;
+ if ( OutOfNDecoding((smpl & 0xF0) >> 4)) {
+ rsamples = samples - Uart.samples;
+ time_stop = (GetCountSspClk()-time_0) << 4;
+ LED_C_ON();
+
+ //if(!LogTrace(Uart.output,Uart.byteCnt, rsamples, Uart.parityBits,TRUE)) break;
+ //if(!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, TRUE)) break;
+ if(tracing) {
+ uint8_t parity[MAX_PARITY_SIZE];
+ GetParity(Uart.output, Uart.byteCnt, parity);
+ LogTrace(Uart.output,Uart.byteCnt, time_start, time_stop, parity, TRUE);
+ }
- /* And ready to receive another command. */
- Uart.state = STATE_UNSYNCD;
- /* And also reset the demod code, which might have been */
- /* false-triggered by the commands from the reader. */
- Demod.state = DEMOD_UNSYNCD;
- LED_B_OFF();
- Uart.byteCnt = 0;
- }else{
- time_start = (GetCountSspClk()-time_0) << 4;
+ /* And ready to receive another command. */
+ Uart.state = STATE_UNSYNCD;
+ /* And also reset the demod code, which might have been */
+ /* false-triggered by the commands from the reader. */
+ Demod.state = DEMOD_UNSYNCD;
+ LED_B_OFF();
+ Uart.byteCnt = 0;
+ } else {
+ time_start = (GetCountSspClk()-time_0) << 4;
+ }
+ decbyter = 0;
}
- decbyter = 0;
- }
- if(div > 3) {
- smpl = decbyte;
- if(ManchesterDecoding(smpl & 0x0F)) {
- time_stop = (GetCountSspClk()-time_0) << 4;
+ if(div > 3) {
+ smpl = decbyte;
+ if(ManchesterDecoding(smpl & 0x0F)) {
+ time_stop = (GetCountSspClk()-time_0) << 4;
- rsamples = samples - Demod.samples;
- LED_B_ON();
+ rsamples = samples - Demod.samples;
+ LED_B_ON();
- if(tracing) {
- uint8_t parity[MAX_PARITY_SIZE];
- GetParity(Demod.output, Demod.len, parity);
- LogTrace(Demod.output, Demod.len, time_start, time_stop, parity, FALSE);
- }
+ if(tracing) {
+ uint8_t parity[MAX_PARITY_SIZE];
+ GetParity(Demod.output, Demod.len, parity);
+ LogTrace(Demod.output, Demod.len, time_start, time_stop, parity, FALSE);
+ }
- // And ready to receive another response.
- memset(&Demod, 0, sizeof(Demod));
- Demod.output = tagToReaderResponse;
- Demod.state = DEMOD_UNSYNCD;
- LED_C_OFF();
- }else{
- time_start = (GetCountSspClk()-time_0) << 4;
+ // And ready to receive another response.
+ memset(&Demod, 0, sizeof(Demod));
+ Demod.output = tagToReaderResponse;
+ Demod.state = DEMOD_UNSYNCD;
+ LED_C_OFF();
+ } else {
+ time_start = (GetCountSspClk()-time_0) << 4;
+ }
+
+ div = 0;
+ decbyte = 0x00;
}
-
- div = 0;
- decbyte = 0x00;
- }
- //}
- if(BUTTON_PRESS()) {
+ if (BUTTON_PRESS()) {
DbpString("cancelled_a");
goto done;
}
Dbprintf("%x %x %x", Uart.byteCntMax, BigBuf_get_traceLen(), (int)Uart.output[0]);
done:
- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;
+ FpgaDisableSscDma();
Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);
Dbprintf("%x %x %x", Uart.byteCntMax, BigBuf_get_traceLen(), (int)Uart.output[0]);
- LED_A_OFF();
- LED_B_OFF();
- LED_C_OFF();
- LED_D_OFF();
+ LEDsoff();
+ set_tracing(FALSE);
}
void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) {
int i;
- for(i = 0; i < 8; i++) {
+ for(i = 0; i < 8; i++)
rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5);
- }
}
//-----------------------------------------------------------------------------
* The mode FPGA_HF_SIMULATOR_MODULATE_424K_8BIT which we use to simulate tag,
* works like this.
* - A 1-bit input to the FPGA becomes 8 pulses on 423.5kHz (fc/32) (18.88us).
- * - A 0-bit inptu to the FPGA becomes an unmodulated time of 18.88us
+ * - A 0-bit input to the FPGA becomes an unmodulated time of 18.88us
*
* In this mode the SOF can be written as 00011101 = 0x1D
* The EOF can be written as 10111000 = 0xb8
uint8_t b = cmd[i];
ToSend[++ToSendMax] = encode4Bits(b & 0xF); //Least significant half
ToSend[++ToSendMax] = encode4Bits((b >>4) & 0xF);//Most significant half
- }
+ }
// Send EOF
ToSend[++ToSendMax] = 0xB8;
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// Enable and clear the trace
- set_tracing(TRUE);
clear_trace();
+ set_tracing(TRUE);
+
//Use the emulator memory for SIM
uint8_t *emulator = BigBuf_get_EM_addr();
Dbprintf("The mode is not implemented, reserved for future use");
}
Dbprintf("Done...");
-
+ set_tracing(FALSE);
+}
+void AppendCrc(uint8_t* data, int len)
+{
+ ComputeCrc14443(CRC_ICLASS,data,len,data+len,data+len+1);
}
/**
// free eventually allocated BigBuf memory
BigBuf_free_keep_EM();
+ State cipher_state;
+// State cipher_state_reserve;
uint8_t *csn = BigBuf_get_EM_addr();
uint8_t *emulator = csn;
uint8_t sof_data[] = { 0x0F} ;
ComputeCrc14443(CRC_ICLASS, anticoll_data, 8, &anticoll_data[8], &anticoll_data[9]);
ComputeCrc14443(CRC_ICLASS, csn_data, 8, &csn_data[8], &csn_data[9]);
+ uint8_t diversified_key[8] = { 0 };
// e-Purse
uint8_t card_challenge_data[8] = { 0x00 };
if(simulationMode == MODE_FULLSIM)
{
+ //The diversified key should be stored on block 3
+ //Get the diversified key from emulator memory
+ memcpy(diversified_key, emulator+(8*3),8);
+
//Card challenge, a.k.a e-purse is on block 2
memcpy(card_challenge_data,emulator + (8 * 2) , 8);
+ //Precalculate the cipher state, feeding it the CC
+ cipher_state = opt_doTagMAC_1(card_challenge_data,diversified_key);
+
}
int exitLoop = 0;
int resp_cc_len;
uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
- memset(receivedCmd, 0x44, MAX_FRAME_SIZE);
int len;
// Prepare card messages
memcpy(resp_cc, ToSend, ToSendMax); resp_cc_len = ToSendMax;
//This is used for responding to READ-block commands or other data which is dynamically generated
- uint8_t *data_response = BigBuf_malloc(8 * 2 + 2);
- //This is used for responding to READ-block commands or other data which is dynamically generated
- uint8_t *data_generic_trace = BigBuf_malloc(8 * 2 + 2);
+ //First the 'trace'-data, not encoded for FPGA
+ uint8_t *data_generic_trace = BigBuf_malloc(8 + 2);//8 bytes data + 2byte CRC is max tag answer
+ //Then storage for the modulated data
+ //Each bit is doubled when modulated for FPGA, and we also have SOF and EOF (2 bytes)
+ uint8_t *data_response = BigBuf_malloc( (8+2) * 2 + 2);
// Start from off (no field generated)
//FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_A_ON();
bool buttonPressed = false;
-
+ uint8_t response_delay = 1;
while(!exitLoop) {
-
+ response_delay = 1;
LED_B_OFF();
//Signal tracer
// Can be used to get a trigger for an oscilloscope..
} else if(receivedCmd[0] == ICLASS_CMD_CHECK) {
// Reader random and reader MAC!!!
if(simulationMode == MODE_FULLSIM)
- { //This is what we must do..
- //Reader just sent us NR and MAC(k,cc * nr)
- //The diversified key should be stored on block 3
- //However, from a typical dump, the key will not be there
- uint8_t diversified_key[8] = { 0 };
-
- //Get the diversified key from emulator memory
- memcpy(diversified_key, emulator+(8*3),8);
- uint8_t ccnr[12] = { 0 };
- //Put our cc there (block 2)
- memcpy(ccnr, emulator + (8 * 2), 8);
- //Put nr there
- memcpy(ccnr+8, receivedCmd+1,4);
- //Now, calc MAC
- opt_doMAC(ccnr,diversified_key, data_generic_trace);
+ {
+ //NR, from reader, is in receivedCmd +1
+ opt_doTagMAC_2(cipher_state,receivedCmd+1,data_generic_trace,diversified_key);
+
trace_data = data_generic_trace;
trace_data_size = 4;
CodeIClassTagAnswer(trace_data , trace_data_size);
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
modulated_response_size = ToSendMax;
+ response_delay = 0;//We need to hurry here...
//exitLoop = true;
}else
{ //Not fullsim, we don't respond
- // We do not know what to answer, so lets keep quiet
+ // We do not know what to answer, so lets keep quiet
modulated_response = resp_sof; modulated_response_size = 0;
- trace_data = NULL;
- trace_data_size = 0;
+ trace_data = NULL;
+ trace_data_size = 0;
if (simulationMode == MODE_EXIT_AFTER_MAC){
- // dbprintf:ing ...
- Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x"
- ,csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
- Dbprintf("RDR: (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",len,
- receivedCmd[0], receivedCmd[1], receivedCmd[2],
- receivedCmd[3], receivedCmd[4], receivedCmd[5],
- receivedCmd[6], receivedCmd[7], receivedCmd[8]);
- if (reader_mac_buf != NULL)
- {
- memcpy(reader_mac_buf,receivedCmd+1,8);
- }
- exitLoop = true;
+ // dbprintf:ing ...
+ Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x"
+ ,csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
+ Dbprintf("RDR: (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",len,
+ receivedCmd[0], receivedCmd[1], receivedCmd[2],
+ receivedCmd[3], receivedCmd[4], receivedCmd[5],
+ receivedCmd[6], receivedCmd[7], receivedCmd[8]);
+ if (reader_mac_buf != NULL)
+ {
+ memcpy(reader_mac_buf,receivedCmd+1,8);
}
+ exitLoop = true;
+ }
}
} else if(receivedCmd[0] == ICLASS_CMD_HALT && len == 1) {
} else if(simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){
//Read block
uint16_t blk = receivedCmd[1];
- trace_data = emulator+(blk << 3);
- trace_data_size = 8;
+ //Take the data...
+ memcpy(data_generic_trace, emulator+(blk << 3),8);
+ //Add crc
+ AppendCrc(data_generic_trace, 8);
+ trace_data = data_generic_trace;
+ trace_data_size = 10;
+ CodeIClassTagAnswer(trace_data , trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ }else if(receivedCmd[0] == ICLASS_CMD_UPDATE && simulationMode == MODE_FULLSIM)
+ {//Probably the reader wants to update the nonce. Let's just ignore that for now.
+ // OBS! If this is implemented, don't forget to regenerate the cipher_state
+ //We're expected to respond with the data+crc, exactly what's already in the receivedcmd
+ //receivedcmd is now UPDATE 1b | ADDRESS 1b| DATA 8b| Signature 4b or CRC 2b|
+
+ //Take the data...
+ memcpy(data_generic_trace, receivedCmd+2,8);
+ //Add crc
+ AppendCrc(data_generic_trace, 8);
+ trace_data = data_generic_trace;
+ trace_data_size = 10;
CodeIClassTagAnswer(trace_data , trace_data_size);
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
else {
//#db# Unknown command received from reader (len=5): 26 1 0 f6 a 44 44 44 44
// Never seen this command before
- Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
+ Dbprintf("Unhandled command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
len,
receivedCmd[0], receivedCmd[1], receivedCmd[2],
receivedCmd[3], receivedCmd[4], receivedCmd[5],
receivedCmd[6], receivedCmd[7], receivedCmd[8]);
// Do not respond
- modulated_response = resp_sof; modulated_response_size = 0; //order = 0;
+ modulated_response = resp_sof;
+ modulated_response_size = 0; //order = 0;
trace_data = NULL;
trace_data_size = 0;
}
A legit tag has about 380us delay between reader EOT and tag SOF.
**/
if(modulated_response_size > 0) {
- SendIClassAnswer(modulated_response, modulated_response_size, 1);
+ SendIClassAnswer(modulated_response, modulated_response_size, response_delay);
t2r_time = GetCountSspClk();
}
GetParity(trace_data, trace_data_size, parity);
LogTrace(trace_data, trace_data_size, (t2r_time-time_0) << 4, (t2r_time-time_0) << 4, parity, FALSE);
}
- if(!tracing) {
+ if(!tracing)
DbpString("Trace full");
- //break;
- }
}
- memset(receivedCmd, 0x44, MAX_FRAME_SIZE);
}
- //Dbprintf("%x", cmdsRecvd);
- LED_A_OFF();
- LED_B_OFF();
- LED_C_OFF();
-
+ LEDsoff();
+
if(buttonPressed)
- {
DbpString("Button pressed");
- }
+
return buttonPressed;
}
//-----------------------------------------------------------------------------
static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int *wait)
{
- int c;
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
- AT91C_BASE_SSC->SSC_THR = 0x00;
- FpgaSetupSsc();
-
- if (wait)
- {
- if(*wait < 10) *wait = 10;
-
- for(c = 0; c < *wait;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
- AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing!
- c++;
- }
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
- (void)r;
- }
- WDT_HIT();
- }
-
- }
-
-
- uint8_t sendbyte;
- bool firstpart = TRUE;
- c = 0;
- for(;;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-
- // DOUBLE THE SAMPLES!
- if(firstpart) {
- sendbyte = (cmd[c] & 0xf0) | (cmd[c] >> 4);
- }
- else {
- sendbyte = (cmd[c] & 0x0f) | (cmd[c] << 4);
- c++;
- }
- if(sendbyte == 0xff) {
- sendbyte = 0xfe;
- }
- AT91C_BASE_SSC->SSC_THR = sendbyte;
- firstpart = !firstpart;
+ int c;
+ volatile uint32_t r;
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
+ AT91C_BASE_SSC->SSC_THR = 0x00;
+ FpgaSetupSsc();
- if(c >= len) {
- break;
- }
- }
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
- (void)r;
- }
- WDT_HIT();
- }
- if (samples) *samples = (c + *wait) << 3;
-}
+ if (wait) {
+ if(*wait < 10) *wait = 10;
+
+ for(c = 0; c < *wait;) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+ AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing!
+ c++;
+ }
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
+ r = AT91C_BASE_SSC->SSC_RHR;
+ (void)r;
+ }
+ WDT_HIT();
+ }
+ }
+
+
+ uint8_t sendbyte;
+ bool firstpart = TRUE;
+ c = 0;
+ for(;;) {
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+ // DOUBLE THE SAMPLES!
+ if(firstpart) {
+ sendbyte = (cmd[c] & 0xf0) | (cmd[c] >> 4);
+ }
+ else {
+ sendbyte = (cmd[c] & 0x0f) | (cmd[c] << 4);
+ c++;
+ }
+
+ if(sendbyte == 0xff)
+ sendbyte = 0xfe;
+
+ AT91C_BASE_SSC->SSC_THR = sendbyte;
+ firstpart = !firstpart;
+
+ if(c >= len) break;
+
+ }
+ if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
+ r = AT91C_BASE_SSC->SSC_RHR;
+ (void)r;
+ }
+
+ WDT_HIT();
+ }
+ if (samples && wait) *samples = (c + *wait) << 3;
+}
//-----------------------------------------------------------------------------
// Prepare iClass reader command to send to FPGA
for(j = 0; j < 4; j++) {
for(k = 0; k < 4; k++) {
if(k == (b & 3)) {
- ToSend[++ToSendMax] = 0x0f;
+ ToSend[++ToSendMax] = 0xf0;
}
else {
ToSend[++ToSendMax] = 0x00;
void ReaderTransmitIClass(uint8_t* frame, int len)
{
- int wait = 0;
- int samples = 0;
+ int wait = 0;
+ int samples = 0;
- // This is tied to other size changes
- CodeIClassCommand(frame,len);
+ // This is tied to other size changes
+ CodeIClassCommand(frame,len);
- // Select the card
- TransmitIClassCommand(ToSend, ToSendMax, &samples, &wait);
- if(trigger)
- LED_A_ON();
+ // Select the card
+ TransmitIClassCommand(ToSend, ToSendMax, &samples, &wait);
+ if(trigger)
+ LED_A_ON();
- // Store reader command in buffer
+ // Store reader command in buffer
if (tracing) {
uint8_t par[MAX_PARITY_SIZE];
GetParity(frame, len, par);
for(;;) {
WDT_HIT();
- if(BUTTON_PRESS()) return FALSE;
+ if(BUTTON_PRESS()) return FALSE;
if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
AT91C_BASE_SSC->SSC_THR = 0x00; // To make use of exact timing of next command from reader!!
if (elapsed) (*elapsed)++;
}
if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- if(c < timeout) { c++; } else { return FALSE; }
+ if(c < timeout)
+ c++;
+ else
+ return FALSE;
+
b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
+
skip = !skip;
+
if(skip) continue;
if(ManchesterDecoding(b & 0x0f)) {
{
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// Reset trace buffer
- set_tracing(TRUE);
clear_trace();
-
+ set_tracing(TRUE);
+
// Setup SSC
FpgaSetupSsc();
// Start from off (no field generated)
}
-size_t sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
+bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
{
while(retries-- > 0)
{
ReaderTransmitIClass(command, cmdsize);
if(expected_size == ReaderReceiveIClass(resp)){
- return 0;
+ return true;
}
}
- return 1;//Error
+ return false;//Error
}
/**
* 1 = Got CSN
* 2 = Got CSN and CC
*/
-uint8_t handshakeIclassTag(uint8_t *card_data)
+uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key)
{
static uint8_t act_all[] = { 0x0a };
- static uint8_t identify[] = { 0x0c };
+ //static uint8_t identify[] = { 0x0c };
+ static uint8_t identify[] = { 0x0c, 0x00, 0x73, 0x33 };
static uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static uint8_t readcheck_cc[]= { 0x88, 0x02 };
+ if (use_credit_key)
+ readcheck_cc[0] = 0x18;
+ else
+ readcheck_cc[0] = 0x88;
+
uint8_t resp[ICLASS_BUFFER_SIZE];
uint8_t read_status = 0;
if(ReaderReceiveIClass(resp) == 8) {
//Save CC (e-purse) in response data
memcpy(card_data+8,resp,8);
-
- //Got both
- read_status = 2;
+ read_status++;
}
return read_status;
}
+uint8_t handshakeIclassTag(uint8_t *card_data){
+ return handshakeIclassTag_ext(card_data, false);
+}
+
// Reader iClass Anticollission
void ReaderIClass(uint8_t arg0) {
- uint8_t card_data[24]={0};
+ uint8_t card_data[6 * 8]={0};
+ memset(card_data, 0xFF, sizeof(card_data));
uint8_t last_csn[8]={0};
+ //Read conf block CRC(0x01) => 0xfa 0x22
+ uint8_t readConf[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x01, 0xfa, 0x22};
+ //Read conf block CRC(0x05) => 0xde 0x64
+ uint8_t readAA[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x05, 0xde, 0x64};
+
+
int read_status= 0;
+ uint8_t result_status = 0;
bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
- bool get_cc = arg0 & FLAG_ICLASS_READER_GET_CC;
+ bool try_once = arg0 & FLAG_ICLASS_READER_ONE_TRY;
+ bool use_credit_key = false;
+ if (arg0 & FLAG_ICLASS_READER_CEDITKEY)
+ use_credit_key = true;
set_tracing(TRUE);
setupIclassReader();
- size_t datasize = 0;
+ uint16_t tryCnt=0;
while(!BUTTON_PRESS())
{
-
+ if (try_once && tryCnt > 5) break;
+
+ tryCnt++;
+
if(!tracing) {
DbpString("Trace full");
break;
}
WDT_HIT();
- read_status = handshakeIclassTag(card_data);
+ read_status = handshakeIclassTag_ext(card_data, use_credit_key);
if(read_status == 0) continue;
- if(read_status == 1) datasize = 8;
- if(read_status == 2) datasize = 16;
+ if(read_status == 1) result_status = FLAG_ICLASS_READER_CSN;
+ if(read_status == 2) result_status = FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CC;
+
+ // handshakeIclass returns CSN|CC, but the actual block
+ // layout is CSN|CONFIG|CC, so here we reorder the data,
+ // moving CC forward 8 bytes
+ memcpy(card_data+16,card_data+8, 8);
+ //Read block 1, config
+ if(arg0 & FLAG_ICLASS_READER_CONF)
+ {
+ if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf),card_data+8, 10, 10))
+ {
+ result_status |= FLAG_ICLASS_READER_CONF;
+ } else {
+ Dbprintf("Failed to dump config block");
+ }
+ }
- //Todo, read the public blocks 1,5 aswell:
- //
- // 0 : CSN (we already have)
+ //Read block 5, AA
+ if(arg0 & FLAG_ICLASS_READER_AA){
+ if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA),card_data+(8*4), 10, 10))
+ {
+ result_status |= FLAG_ICLASS_READER_AA;
+ } else {
+ //Dbprintf("Failed to dump AA block");
+ }
+ }
+
+ // 0 : CSN
// 1 : Configuration
- // 2 : e-purse (we already have)
- // (3,4 write-only)
+ // 2 : e-purse
+ // (3,4 write-only, kc and kd)
// 5 Application issuer area
//
//Then we can 'ship' back the 8 * 5 bytes of data,
// with 0xFF:s in block 3 and 4.
- LED_B_ON();
- //Send back to client, but don't bother if we already sent this
- if(memcmp(last_csn, card_data, 8) != 0)
+ LED_B_ON();
+ //Send back to client, but don't bother if we already sent this
+ if(memcmp(last_csn, card_data, 8) != 0)
{
-
- if(!get_cc || (get_cc && read_status == 2))
+ // If caller requires that we get CC, continue until we got it
+ if( (arg0 & read_status & FLAG_ICLASS_READER_CC) || !(arg0 & FLAG_ICLASS_READER_CC))
{
- cmd_send(CMD_ACK,read_status,0,0,card_data,datasize);
+ cmd_send(CMD_ACK,result_status,0,0,card_data,sizeof(card_data));
if(abort_after_read) {
LED_A_OFF();
+ set_tracing(FALSE);
return;
}
//Save that we already sent this....
memcpy(last_csn, card_data, 8);
}
- //If 'get_cc' was specified and we didn't get a CC, we'll just keep trying...
}
LED_B_OFF();
}
cmd_send(CMD_ACK,0,0,0,card_data, 0);
LED_A_OFF();
+ set_tracing(FALSE);
}
void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
//for now replay captured auth (as cc not updated)
memcpy(check+5,MAC,4);
- if(sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
+ if(!sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
{
Dbprintf("Error: Authentication Fail!");
continue;
read[2] = crc >> 8;
read[3] = crc & 0xff;
- if(sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
+ if(!sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
{
Dbprintf("Dump config (block 1) failed");
continue;
}
- mem=resp[5];
- memory.k16= (mem & 0x80);
- memory.book= (mem & 0x20);
- memory.k2= (mem & 0x8);
- memory.lockauth= (mem & 0x2);
- memory.keyaccess= (mem & 0x1);
+ mem=resp[5];
+ memory.k16= (mem & 0x80);
+ memory.book= (mem & 0x20);
+ memory.k2= (mem & 0x8);
+ memory.lockauth= (mem & 0x2);
+ memory.keyaccess= (mem & 0x1);
cardsize = memory.k16 ? 255 : 32;
WDT_HIT();
memset(card_data,0x0,USB_CMD_DATA_SIZE);
uint8_t failedRead =0;
uint32_t stored_data_length =0;
- //then loop around remaining blocks
+ //then loop around remaining blocks
for(int block=0; block < cardsize; block++){
read[1]= block;
read[2] = crc >> 8;
read[3] = crc & 0xff;
- if(!sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
+ if(sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
{
Dbprintf(" %02x: %02x %02x %02x %02x %02x %02x %02x %02x",
- block, resp[0], resp[1], resp[2],
- resp[3], resp[4], resp[5],
- resp[6], resp[7]);
+ block, resp[0], resp[1], resp[2],
+ resp[3], resp[4], resp[5],
+ resp[6], resp[7]);
//Fill up the buffer
memcpy(card_data+stored_data_length,resp,8);
stored_data_length = 0;
failedRead = 0;
}
-
- }else{
+ } else {
failedRead = 1;
stored_data_length +=8;//Otherwise, data becomes misaligned
Dbprintf("Failed to dump block %d", block);
card_data, 0);
LED_A_OFF();
+ set_tracing(FALSE);
}
-//2. Create Read method (cut-down from above) based off responses from 1.
-// Since we have the MAC could continue to use replay function.
-//3. Create Write method
-/*
-void IClass_iso14443A_write(uint8_t arg0, uint8_t blockNo, uint8_t *data, uint8_t *MAC) {
- uint8_t act_all[] = { 0x0a };
- uint8_t identify[] = { 0x0c };
- uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- uint8_t readcheck_cc[]= { 0x88, 0x02 };
- uint8_t check[] = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- uint8_t read[] = { 0x0c, 0x00, 0x00, 0x00 };
- uint8_t write[] = { 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-
- uint16_t crc = 0;
-
- uint8_t* resp = (((uint8_t *)BigBuf) + 3560);
-
- // Reset trace buffer
- memset(trace, 0x44, RECV_CMD_OFFSET);
- traceLen = 0;
-
- // Setup SSC
- FpgaSetupSsc();
- // Start from off (no field generated)
- // Signal field is off with the appropriate LED
- LED_D_OFF();
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(200);
+void iClass_ReadCheck(uint8_t blockNo, uint8_t keyType) {
+ uint8_t readcheck[] = { keyType, blockNo };
+ uint8_t resp[] = {0,0,0,0,0,0,0,0};
+ size_t isOK = 0;
+ isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 6);
+ cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+void iClass_Authentication(uint8_t *MAC) {
+ uint8_t check[] = { ICLASS_CMD_CHECK, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ uint8_t resp[ICLASS_BUFFER_SIZE];
+ memcpy(check+5,MAC,4);
+ bool isOK;
+ isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, 4, 6);
+ cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
+bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata) {
+ uint8_t readcmd[] = {ICLASS_CMD_READ_OR_IDENTIFY, blockNo, 0x00, 0x00}; //0x88, 0x00 // can i use 0C?
+ char bl = blockNo;
+ uint16_t rdCrc = iclass_crc16(&bl, 1);
+ readcmd[2] = rdCrc >> 8;
+ readcmd[3] = rdCrc & 0xff;
+ uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+
+ //readcmd[1] = blockNo;
+ isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, 10, 10);
+ memcpy(readdata, resp, sizeof(resp));
+
+ return isOK;
+}
- // Now give it time to spin up.
- // Signal field is on with the appropriate LED
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
- SpinDelay(200);
+void iClass_ReadBlk(uint8_t blockno) {
+ uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+ isOK = iClass_ReadBlock(blockno, readblockdata);
+ cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8);
+}
- LED_A_ON();
+void iClass_Dump(uint8_t blockno, uint8_t numblks) {
+ uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+ uint8_t blkCnt = 0;
- for(int i=0;i<1;i++) {
-
- if(traceLen > TRACE_SIZE) {
- DbpString("Trace full");
+ BigBuf_free();
+ uint8_t *dataout = BigBuf_malloc(255*8);
+ if (dataout == NULL){
+ Dbprintf("out of memory");
+ OnError(1);
+ return;
+ }
+ memset(dataout,0xFF,255*8);
+
+ for (;blkCnt < numblks; blkCnt++) {
+ isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+ if (!isOK || (readblockdata[0] == 0xBB || readblockdata[7] == 0xBB || readblockdata[2] == 0xBB)) { //try again
+ isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+ if (!isOK) {
+ Dbprintf("Block %02X failed to read", blkCnt+blockno);
break;
}
-
- if (BUTTON_PRESS()) break;
-
- // Send act_all
- ReaderTransmitIClass(act_all, 1);
- // Card present?
- if(ReaderReceiveIClass(resp)) {
- ReaderTransmitIClass(identify, 1);
- if(ReaderReceiveIClass(resp) == 10) {
- // Select card
- memcpy(&select[1],resp,8);
- ReaderTransmitIClass(select, sizeof(select));
-
- if(ReaderReceiveIClass(resp) == 10) {
- Dbprintf(" Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
- resp[0], resp[1], resp[2],
- resp[3], resp[4], resp[5],
- resp[6], resp[7]);
- }
- // Card selected
- Dbprintf("Readcheck on Sector 2");
- ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
- if(ReaderReceiveIClass(resp) == 8) {
- Dbprintf(" CC: %02x %02x %02x %02x %02x %02x %02x %02x",
- resp[0], resp[1], resp[2],
- resp[3], resp[4], resp[5],
- resp[6], resp[7]);
- }else return;
- Dbprintf("Authenticate");
- //for now replay captured auth (as cc not updated)
- memcpy(check+5,MAC,4);
- Dbprintf(" AA: %02x %02x %02x %02x",
- check[5], check[6], check[7],check[8]);
- ReaderTransmitIClass(check, sizeof(check));
- if(ReaderReceiveIClass(resp) == 4) {
- Dbprintf(" AR: %02x %02x %02x %02x",
- resp[0], resp[1], resp[2],resp[3]);
+ }
+ memcpy(dataout+(blkCnt*8),readblockdata,8);
+ }
+ //return pointer to dump memory in arg3
+ cmd_send(CMD_ACK,isOK,blkCnt,BigBuf_max_traceLen(),0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
+ BigBuf_free();
+}
+
+bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) {
+ uint8_t write[] = { ICLASS_CMD_UPDATE, blockNo, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ //uint8_t readblockdata[10];
+ //write[1] = blockNo;
+ memcpy(write+2, data, 12); // data + mac
+ char *wrCmd = (char *)(write+1);
+ uint16_t wrCrc = iclass_crc16(wrCmd, 13);
+ write[14] = wrCrc >> 8;
+ write[15] = wrCrc & 0xff;
+ uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+
+ isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+ if (isOK) { //if reader responded correctly
+ //Dbprintf("WriteResp: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",resp[0],resp[1],resp[2],resp[3],resp[4],resp[5],resp[6],resp[7],resp[8],resp[9]);
+ if (memcmp(write+2,resp,8)) { //if response is not equal to write values
+ if (blockNo != 3 && blockNo != 4) { //if not programming key areas (note key blocks don't get programmed with actual key data it is xor data)
+ //error try again
+ isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+ }
+
+ }
+ }
+ return isOK;
+}
+
+void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) {
+ bool isOK = iClass_WriteBlock_ext(blockNo, data);
+ if (isOK){
+ Dbprintf("Write block [%02x] successful",blockNo);
}else {
- Dbprintf("Error: Authentication Fail!");
- return;
- }
- Dbprintf("Write Block");
-
- //read configuration for max block number
- read_success=false;
- read[1]=1;
- uint8_t *blockno=&read[1];
- crc = iclass_crc16((char *)blockno,1);
- read[2] = crc >> 8;
- read[3] = crc & 0xff;
- while(!read_success){
- ReaderTransmitIClass(read, sizeof(read));
- if(ReaderReceiveIClass(resp) == 10) {
- read_success=true;
- mem=resp[5];
- memory.k16= (mem & 0x80);
- memory.book= (mem & 0x20);
- memory.k2= (mem & 0x8);
- memory.lockauth= (mem & 0x2);
- memory.keyaccess= (mem & 0x1);
-
- }
- }
- if (memory.k16){
- cardsize=255;
- }else cardsize=32;
- //check card_size
-
- memcpy(write+1,blockNo,1);
- memcpy(write+2,data,8);
- memcpy(write+10,mac,4);
- while(!send_success){
- ReaderTransmitIClass(write, sizeof(write));
- if(ReaderReceiveIClass(resp) == 10) {
- write_success=true;
- }
- }//
+ Dbprintf("Write block [%02x] failed",blockNo);
+ }
+ cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
+
+void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {
+ int i;
+ int written = 0;
+ int total_block = (endblock - startblock) + 1;
+ for (i = 0; i < total_block;i++){
+ // block number
+ if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+ Dbprintf("Write block [%02x] successful",i + startblock);
+ written++;
+ } else {
+ if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+ Dbprintf("Write block [%02x] successful",i + startblock);
+ written++;
+ } else {
+ Dbprintf("Write block [%02x] failed",i + startblock);
+ }
}
- WDT_HIT();
}
-
- LED_A_OFF();
-}*/
+ if (written == total_block)
+ Dbprintf("Clone complete");
+ else
+ Dbprintf("Clone incomplete");
+
+ cmd_send(CMD_ACK,1,0,0,0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
+}
projects / proxmark3-svn / blobdiff