// reset traceLen to 0
iso14a_set_tracing(TRUE);
- iso14a_clear_tracelen();
+ iso14a_clear_trace();
iso14a_set_trigger(FALSE);
// The DMA buffer, used to stream samples from the FPGA
ToSendMax++;
}
-//-----------------------------------------------------------------------------
-// Simulate iClass Card
-// Only CSN (Card Serial Number)
-//
-//-----------------------------------------------------------------------------
-void SimulateIClass(uint8_t arg0, uint8_t *datain)
+/**
+ * @brief SimulateIClass simulates an iClass card.
+ * @param arg0 type of simulation
+ * - 0 uses the first 8 bytes in usb data as CSN
+ * - 2 "dismantling iclass"-attack. This mode iterates through all CSN's specified
+ * in the usb data. This mode collects MAC from the reader, in order to do an offline
+ * attack on the keys. For more info, see "dismantling iclass" and proxclone.com.
+ * - Other : Uses the default CSN (031fec8af7ff12e0)
+ * @param arg1 - number of CSN's contained in datain (applicable for mode 2 only)
+ * @param arg2
+ * @param datain
+ */
+void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
{
- uint8_t simType = arg0;
+ uint32_t simType = arg0;
+ uint32_t numberOfCSNS = arg1;
- // Enable and clear the trace
- tracing = TRUE;
- traceLen = 0;
- memset(trace, 0x44, TRACE_SIZE);
+ // Enable and clear the trace
+ iso14a_set_tracing(TRUE);
+ iso14a_clear_trace();
+
+ uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };
+
+ if(simType == 0) {
+ // Use the CSN from commandline
+ memcpy(csn_crc, datain, 8);
+ doIClassSimulation(csn_crc,0);
+ }else if(simType == 1)
+ {
+ doIClassSimulation(csn_crc,0);
+ }
+ else if(simType == 2)
+ {
+ // In this mode, a number of csns are within datain. We'll simulate each one, one at a time
+ // in order to collect MAC's from the reader. This can later be used in an offlne-attack
+ // in order to obtain the keys, as in the "dismantling iclass"-paper.
+ for(int i = 0 ; i < numberOfCSNS && i*8+8 < USB_CMD_DATA_SIZE; i++)
+ {
+ // The usb data is 512 bytes, fitting 65 8-byte CSNs in there.
+
+ memcpy(csn_crc, datain+(i*8), 8);
+ doIClassSimulation(csn_crc,1);
+ }
+ }else{
+ // We may want a mode here where we hardcode the csns to use (from proxclone).
+ // That will speed things up a little, but not required just yet.
+ Dbprintf("The mode is not implemented, reserved for future use");
+ }
+}
+/**
+ * @brief Does the actual simulation
+ * @param csn - csn to use
+ * @param breakAfterMacReceived if true, returns after reader MAC has been received.
+ */
+void doIClassSimulation(uint8_t csn[], int breakAfterMacReceived)
+{
// CSN followed by two CRC bytes
uint8_t response2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- uint8_t response3[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };
+ uint8_t response3[] = { 0,0,0,0,0,0,0,0,0,0};
+ memcpy(response3,csn,sizeof(response3));
// e-Purse
uint8_t response4[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- if(simType == 0) {
- // Use the CSN from commandline
- memcpy(response3, datain, 8);
- }
-
// Construct anticollision-CSN
rotateCSN(response3,response2);
ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);
ComputeCrc14443(CRC_ICLASS, response3, 8, &response3[8], &response3[9]);
+ int exitLoop = 0;
// Reader 0a
// Tag 0f
// Reader 0c
int resp4Len;
// + 1720..
- uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
+ uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
memset(receivedCmd, 0x44, RECV_CMD_SIZE);
int len;
int cmdsRecvd = 0;
LED_A_ON();
- for(;;) {
+ while(!exitLoop) {
LED_B_OFF();
if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) {
DbpString("button press");
LED_B_ON();
} else if(receivedCmd[0] == 0x05) {
// Reader random and reader MAC!!!
- // Lets store this ;-)
-/*
- Dbprintf(" CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
- response3[0], response3[1], response3[2],
- response3[3], response3[4], response3[5],
- response3[6], response3[7]);
-*/
- Dbprintf("READER AUTH (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]);
-
// Do not respond
// We do not know what to answer, so lets keep quit
resp = resp1; respLen = 0; //order = 5;
respdata = NULL;
respsize = 0;
+ if (breakAfterMacReceived){
+ // TODO, actually return this to the caller instead of just
+ // dbprintf:ing ...
+ Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x");
+ 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]);
+ exitLoop = true;
+ }
} else if(receivedCmd[0] == 0x00 && len == 1) {
// Reader ends the session
resp = resp1; respLen = 0; //order = 0;
}
if (tracing) {
- LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE);
+ LogTrace(receivedCmd,len, rsamples, Uart.parityBits, TRUE);
if (respdata != NULL) {
- LogTrace(respdata,respsize, 0, SwapBits(GetParity(respdata,respsize),respsize), FALSE);
+ LogTrace(respdata,respsize, rsamples, SwapBits(GetParity(respdata,respsize),respsize), FALSE);
+ }
+ if(traceLen > TRACE_SIZE) {
+ DbpString("Trace full");
+ break;
}
}
-
memset(receivedCmd, 0x44, RECV_CMD_SIZE);
}
LED_A_ON();
// Store reader command in buffer
- if (tracing) LogTrace(frame,len,0,par,TRUE);
+ if (tracing) LogTrace(frame,len,rsamples,par,TRUE);
}
//-----------------------------------------------------------------------------
{
int samples = 0;
if (!GetIClassAnswer(receivedAnswer,160,&samples,0)) return FALSE;
- if (tracing) LogTrace(receivedAnswer,Demod.len,samples,Demod.parityBits,FALSE);
+ rsamples += samples;
+ if (tracing) LogTrace(receivedAnswer,Demod.len,rsamples,Demod.parityBits,FALSE);
if(samples == 0) return FALSE;
return Demod.len;
}
void ReaderIClass(uint8_t arg0) {
uint8_t act_all[] = { 0x0a };
uint8_t identify[] = { 0x0c };
- //uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes
// Reset trace buffer
- memset(trace, 0x44, RECV_CMD_OFFSET);
+ memset(trace, 0x44, RECV_CMD_OFFSET);
traceLen = 0;
// Setup SSC
LED_A_ON();
for(;;) {
- if(traceLen > TRACE_SIZE || BUTTON_PRESS()) break;
+
+ if(traceLen > TRACE_SIZE) {
+ DbpString("Trace full");
+ break;
+ }
+
+ if (BUTTON_PRESS()) break;
// Send act_all
ReaderTransmitIClass(act_all, 1);
// Card present?
if(ReaderReceiveIClass(resp)) {
ReaderTransmitIClass(identify, 1);
- if(ReaderReceiveIClass(resp)) {
- //ReaderTransmitIClass(select, sizeof(select));
+ 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, whats next... ;-)
}
}
WDT_HIT();
}
LED_A_OFF();
-
-/* if(resp_data)
- memcpy(resp_data->atqa, resp, 2);
-
- // OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in
- // which case we need to make a cascade 2 request and select - this is a long UID
- // While the UID is not complete, the 3nd bit (from the right) is set in the SAK.
- for(; sak & 0x04; cascade_level++)
- {
- // SELECT_* (L1: 0x93, L2: 0x95, L3: 0x97)
- sel_uid[0] = sel_all[0] = 0x93 + cascade_level * 2;
-
- // SELECT_ALL
- ReaderTransmit(sel_all,sizeof(sel_all));
- if (!ReaderReceive(resp)) return 0;
- if(uid_ptr) memcpy(uid_ptr + cascade_level*4, resp, 4);
-
- // calculate crypto UID
- if(cuid_ptr) *cuid_ptr = bytes_to_num(resp, 4);
-
- // Construct SELECT UID command
- memcpy(sel_uid+2,resp,5);
- AppendCrc14443a(sel_uid,7);
- ReaderTransmit(sel_uid,sizeof(sel_uid));
-
- // Receive the SAK
- if (!ReaderReceive(resp)) return 0;
- sak = resp[0];
- }
- if(resp_data) {
- resp_data->sak = sak;
- resp_data->ats_len = 0;
- }
- //-- this byte not UID, it CT. http://www.nxp.com/documents/application_note/AN10927.pdf page 3
- if (uid_ptr[0] == 0x88) {
- memcpy(uid_ptr, uid_ptr + 1, 7);
- uid_ptr[7] = 0;
- }
-
- if( (sak & 0x20) == 0)
- return 2; // non iso14443a compliant tag
-
- // Request for answer to select
- if(resp_data) { // JCOP cards - if reader sent RATS then there is no MIFARE session at all!!!
- AppendCrc14443a(rats, 2);
- ReaderTransmit(rats, sizeof(rats));
-
- if (!(len = ReaderReceive(resp))) return 0;
-
- memcpy(resp_data->ats, resp, sizeof(resp_data->ats));
- resp_data->ats_len = len;
- }
-*/
}
projects / proxmark3-svn / blobdiff