X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/912a3e94e48952b6a117b4ec9c9623c0ceea1270..refs/pull/2/head:/armsrc/iclass.c diff --git a/armsrc/iclass.c b/armsrc/iclass.c index e4b1a488..e876132e 100644 --- a/armsrc/iclass.c +++ b/armsrc/iclass.c @@ -60,22 +60,6 @@ static int timeout = 4096; #define SEC_Y 0x00 #define SEC_Z 0xc0 -// SAME AS IN iso14443a. -#define RECV_CMD_OFFSET 3032 -#define RECV_RES_OFFSET 3096 -#define DMA_BUFFER_OFFSET 3160 -#define DMA_BUFFER_SIZE 4096 -#define TRACE_LENGTH 3000 - -uint32_t SwapBits(uint32_t value, int nrbits) { - int i; - uint32_t newvalue = 0; - for(i = 0; i < nrbits; i++) { - newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i); - } - return newvalue; -} - static int SendIClassAnswer(uint8_t *resp, int respLen, int delay); //----------------------------------------------------------------------------- @@ -687,7 +671,7 @@ void RAMFUNC SnoopIClass(void) // #define RECV_RES_OFFSET 3096 // #define DMA_BUFFER_OFFSET 3160 // #define DMA_BUFFER_SIZE 4096 -// #define TRACE_LENGTH 3000 +// #define TRACE_SIZE 3000 // 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 @@ -707,7 +691,7 @@ void RAMFUNC SnoopIClass(void) // 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 @@ -816,7 +800,7 @@ void RAMFUNC SnoopIClass(void) trace[traceLen++] = Uart.byteCnt; memcpy(trace+traceLen, receivedCmd, Uart.byteCnt); traceLen += Uart.byteCnt; - if(traceLen > TRACE_LENGTH) break; + if(traceLen > TRACE_SIZE) break; //} /* And ready to receive another command. */ Uart.state = STATE_UNSYNCD; @@ -848,7 +832,7 @@ void RAMFUNC SnoopIClass(void) trace[traceLen++] = Demod.len; memcpy(trace+traceLen, receivedResponse, Demod.len); traceLen += Demod.len; - if(traceLen > TRACE_LENGTH) break; + if(traceLen > TRACE_SIZE) break; //triggered = TRUE; @@ -1011,6 +995,11 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) { uint8_t simType = arg0; + // Enable and clear the trace + tracing = TRUE; + traceLen = 0; + memset(trace, 0x44, TRACE_SIZE); + // 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 }; @@ -1037,31 +1026,34 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) // Reader 81 anticoll. CSN // Tag CSN - uint8_t *resp; - int respLen; + uint8_t *resp; + int respLen; + uint8_t* respdata = NULL; + int respsize = 0; + uint8_t sof = 0x0f; // Respond SOF -- takes 8 bytes - uint8_t *resp1 = (((uint8_t *)BigBuf) + 800); + uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET); int resp1Len; // Anticollision CSN (rotated CSN) // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit) - uint8_t *resp2 = (((uint8_t *)BigBuf) + 810); + uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 10); int resp2Len; // CSN // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit) - uint8_t *resp3 = (((uint8_t *)BigBuf) + 990); + uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 190); int resp3Len; // e-Purse // 144: Takes 16 bytes for SOF/EOF and 8 * 16 = 128 bytes (2 bytes/bit) - uint8_t *resp4 = (((uint8_t *)BigBuf) + 1170); + uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 370); int resp4Len; // + 1720.. - uint8_t *receivedCmd = (uint8_t *)BigBuf; - memset(receivedCmd, 0x44, 400); + uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); + memset(receivedCmd, 0x44, RECV_CMD_SIZE); int len; // Prepare card messages @@ -1094,36 +1086,46 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) for(;;) { LED_B_OFF(); if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) { - DbpString("button press"); + DbpString("button press"); break; - } + } - // Okay, look at the command now. - if(receivedCmd[0] == 0x0a) { + // Okay, look at the command now. + if(receivedCmd[0] == 0x0a) { // Reader in anticollission phase resp = resp1; respLen = resp1Len; //order = 1; + respdata = &sof; + respsize = sizeof(sof); //resp = resp2; respLen = resp2Len; order = 2; //DbpString("Hello request from reader:"); } else if(receivedCmd[0] == 0x0c) { // Reader asks for anticollission CSN resp = resp2; respLen = resp2Len; //order = 2; + respdata = response2; + respsize = sizeof(response2); //DbpString("Reader requests anticollission CSN:"); } else if(receivedCmd[0] == 0x81) { // Reader selects anticollission CSN. // Tag sends the corresponding real CSN resp = resp3; respLen = resp3Len; //order = 3; + respdata = response3; + respsize = sizeof(response3); //DbpString("Reader selects anticollission CSN:"); } else if(receivedCmd[0] == 0x88) { // Read e-purse (88 02) resp = resp4; respLen = resp4Len; //order = 4; + respdata = response4; + respsize = sizeof(response4); 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], @@ -1133,15 +1135,14 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) // Do not respond // We do not know what to answer, so lets keep quit resp = resp1; respLen = 0; //order = 5; + respdata = NULL; + respsize = 0; } else if(receivedCmd[0] == 0x00 && len == 1) { // Reader ends the session resp = resp1; respLen = 0; //order = 0; -/* } else if(receivedCmd[0] == 0x50) { - // Received a HALT - resp = resp1; respLen = 0; order = 5; // Do nothing - DbpString("Reader requested we HALT!:"); -*/ - } else { + respdata = NULL; + respsize = 0; + } else { // Never seen this command before Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x", len, @@ -1150,10 +1151,10 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) receivedCmd[6], receivedCmd[7], receivedCmd[8]); // Do not respond resp = resp1; respLen = 0; //order = 0; + respdata = NULL; + respsize = 0; } - memset(receivedCmd, 0x44, 32); - if(cmdsRecvd > 999) { DbpString("1000 commands later..."); break; @@ -1162,10 +1163,23 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) cmdsRecvd++; } - if(respLen <= 0) continue; + if(respLen > 0) { + SendIClassAnswer(resp, respLen, 21); + } + + if (tracing) { + LogTrace(receivedCmd,len, rsamples, Uart.parityBits, TRUE); + if (respdata != NULL) { + LogTrace(respdata,respsize, rsamples, SwapBits(GetParity(respdata,respsize),respsize), FALSE); + } + if(traceLen > TRACE_SIZE) { + DbpString("Trace full"); + break; + } + } - SendIClassAnswer(resp, respLen, 21); - } + memset(receivedCmd, 0x44, RECV_CMD_SIZE); + } Dbprintf("%x", cmdsRecvd); LED_A_OFF(); @@ -1335,7 +1349,7 @@ void ReaderTransmitIClass(uint8_t* frame, int len) LED_A_ON(); // Store reader command in buffer - if (tracing) LogTrace(frame,len,0,par,TRUE); + if (tracing) LogTrace(frame,len,rsamples,par,TRUE); } //----------------------------------------------------------------------------- @@ -1393,7 +1407,8 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer) { 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; } @@ -1402,7 +1417,7 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer) 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 @@ -1428,74 +1443,37 @@ void ReaderIClass(uint8_t arg0) { LED_A_ON(); for(;;) { - if(traceLen > TRACE_LENGTH || 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; - } -*/ }