X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/c872d8c1773591e976a508755ce43664f4083da6..d0067d0768e26f100837609a75072da08950e456:/armsrc/iso14443a.c diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c index 7b7314dd..29b23833 100644 --- a/armsrc/iso14443a.c +++ b/armsrc/iso14443a.c @@ -10,17 +10,74 @@ // Routines to support ISO 14443 type A. //----------------------------------------------------------------------------- +#include "iso14443a.h" + #include "proxmark3.h" #include "apps.h" #include "util.h" #include "string.h" #include "cmd.h" #include "iso14443crc.h" -#include "iso14443a.h" -#include "crapto1.h" +#include "crapto1/crapto1.h" #include "mifareutil.h" +#include "mifaresniff.h" #include "BigBuf.h" #include "protocols.h" +#include "parity.h" + +typedef struct { + enum { + DEMOD_UNSYNCD, + // DEMOD_HALF_SYNCD, + // DEMOD_MOD_FIRST_HALF, + // DEMOD_NOMOD_FIRST_HALF, + DEMOD_MANCHESTER_DATA + } state; + uint16_t twoBits; + uint16_t highCnt; + uint16_t bitCount; + uint16_t collisionPos; + uint16_t syncBit; + uint8_t parityBits; + uint8_t parityLen; + uint16_t shiftReg; + uint16_t samples; + uint16_t len; + uint32_t startTime, endTime; + uint8_t *output; + uint8_t *parity; +} tDemod; + +typedef enum { + MOD_NOMOD = 0, + MOD_SECOND_HALF, + MOD_FIRST_HALF, + MOD_BOTH_HALVES + } Modulation_t; + +typedef struct { + enum { + STATE_UNSYNCD, + STATE_START_OF_COMMUNICATION, + STATE_MILLER_X, + STATE_MILLER_Y, + STATE_MILLER_Z, + // DROP_NONE, + // DROP_FIRST_HALF, + } state; + uint16_t shiftReg; + int16_t bitCount; + uint16_t len; + uint16_t byteCntMax; + uint16_t posCnt; + uint16_t syncBit; + uint8_t parityBits; + uint8_t parityLen; + uint32_t fourBits; + uint32_t startTime, endTime; + uint8_t *output; + uint8_t *parity; +} tUart; static uint32_t iso14a_timeout; int rsamples = 0; @@ -35,7 +92,7 @@ static uint8_t iso14_pcb_blocknum = 0; #define REQUEST_GUARD_TIME (7000/16 + 1) // minimum time between last modulation of tag and next start bit from reader to tag: 1172 carrier cycles #define FRAME_DELAY_TIME_PICC_TO_PCD (1172/16 + 1) -// bool LastCommandWasRequest = FALSE; +// bool LastCommandWasRequest = false; // // Total delays including SSC-Transfers between ARM and FPGA. These are in carrier clock cycles (1/13,56MHz) @@ -123,26 +180,6 @@ static uint32_t LastProxToAirDuration; #define SEC_Y 0x00 #define SEC_Z 0xc0 -const uint8_t OddByteParity[256] = { - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1 -}; - - void iso14a_set_trigger(bool enable) { trigger = enable; } @@ -180,11 +217,6 @@ void iso14a_set_ATS_timeout(uint8_t *ats) { // Generate the parity value for a byte sequence // //----------------------------------------------------------------------------- -byte_t oddparity (const byte_t bt) -{ - return OddByteParity[bt]; -} - void GetParity(const uint8_t *pbtCmd, uint16_t iLen, uint8_t *par) { uint16_t paritybit_cnt = 0; @@ -193,7 +225,7 @@ void GetParity(const uint8_t *pbtCmd, uint16_t iLen, uint8_t *par) for (uint16_t i = 0; i < iLen; i++) { // Generate the parity bits - parityBits |= ((OddByteParity[pbtCmd[i]]) << (7-paritybit_cnt)); + parityBits |= ((oddparity8(pbtCmd[i])) << (7-paritybit_cnt)); if (paritybit_cnt == 7) { par[paritybyte_cnt] = parityBits; // save 8 Bits parity parityBits = 0; // and advance to next Parity Byte @@ -245,8 +277,8 @@ static tUart Uart; // 0111 - a 2 tick wide pause shifted left // 1001 - a 2 tick wide pause shifted right const bool Mod_Miller_LUT[] = { - FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, TRUE, - FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE + false, true, false, true, false, false, false, true, + false, true, false, false, false, false, false, false }; #define IsMillerModulationNibble1(b) (Mod_Miller_LUT[(b & 0x000000F0) >> 4]) #define IsMillerModulationNibble2(b) (Mod_Miller_LUT[(b & 0x0000000F)]) @@ -356,13 +388,13 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time) Uart.parityBits <<= 1; // add a (void) parity bit Uart.parityBits <<= (8 - (Uart.len&0x0007)); // left align parity bits Uart.parity[Uart.parityLen++] = Uart.parityBits; // and store it - return TRUE; + return true; } else if (Uart.len & 0x0007) { // there are some parity bits to store Uart.parityBits <<= (8 - (Uart.len&0x0007)); // left align remaining parity bits Uart.parity[Uart.parityLen++] = Uart.parityBits; // and store them } if (Uart.len) { - return TRUE; // we are finished with decoding the raw data sequence + return true; // we are finished with decoding the raw data sequence } else { UartReset(); // Nothing received - start over } @@ -390,7 +422,7 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time) } - return FALSE; // not finished yet, need more data + return false; // not finished yet, need more data } @@ -415,8 +447,8 @@ static tDemod Demod; // Lookup-Table to decide if 4 raw bits are a modulation. // We accept three or four "1" in any position const bool Mod_Manchester_LUT[] = { - FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, - FALSE, FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, TRUE + false, false, false, false, false, false, false, true, + false, false, false, true, false, true, true, true }; #define IsManchesterModulationNibble1(b) (Mod_Manchester_LUT[(b & 0x00F0) >> 4]) @@ -521,13 +553,13 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non Demod.parityBits <<= 1; // add a (void) parity bit Demod.parityBits <<= (8 - (Demod.len&0x0007)); // left align remaining parity bits Demod.parity[Demod.parityLen++] = Demod.parityBits; // and store them - return TRUE; + return true; } else if (Demod.len & 0x0007) { // there are some parity bits to store Demod.parityBits <<= (8 - (Demod.len&0x0007)); // left align remaining parity bits Demod.parity[Demod.parityLen++] = Demod.parityBits; // and store them } if (Demod.len) { - return TRUE; // we are finished with decoding the raw data sequence + return true; // we are finished with decoding the raw data sequence } else { // nothing received. Start over DemodReset(); } @@ -536,7 +568,7 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non } - return FALSE; // not finished yet, need more data + return false; // not finished yet, need more data } //============================================================================= @@ -575,14 +607,14 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { // init trace buffer clear_trace(); - set_tracing(TRUE); + set_tracing(true); uint8_t *data = dmaBuf; uint8_t previous_data = 0; int maxDataLen = 0; int dataLen = 0; - bool TagIsActive = FALSE; - bool ReaderIsActive = FALSE; + bool TagIsActive = false; + bool ReaderIsActive = false; // Set up the demodulator for tag -> reader responses. DemodInit(receivedResponse, receivedResponsePar); @@ -596,11 +628,11 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { // 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. - // triggered == FALSE -- to wait first for card + // triggered == false -- to wait first for card bool triggered = !(param & 0x03); // And now we loop, receiving samples. - for(uint32_t rsamples = 0; TRUE; ) { + for(uint32_t rsamples = 0; true; ) { if(BUTTON_PRESS()) { DbpString("cancelled by button"); @@ -649,7 +681,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { LED_C_ON(); // check - if there is a short 7bit request from reader - if ((!triggered) && (param & 0x02) && (Uart.len == 1) && (Uart.bitCount == 7)) triggered = TRUE; + if ((!triggered) && (param & 0x02) && (Uart.len == 1) && (Uart.bitCount == 7)) triggered = true; if(triggered) { if (!LogTrace(receivedCmd, @@ -657,7 +689,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { Uart.startTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, Uart.parity, - TRUE)) break; + true)) break; } /* And ready to receive another command. */ UartReset(); @@ -679,9 +711,9 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { Demod.startTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER, Demod.endTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER, Demod.parity, - FALSE)) break; + false)) break; - if ((!triggered) && (param & 0x01)) triggered = TRUE; + if ((!triggered) && (param & 0x01)) triggered = true; // And ready to receive another response. DemodReset(); @@ -811,7 +843,7 @@ static void Code4bitAnswerAsTag(uint8_t cmd) //----------------------------------------------------------------------------- // Wait for commands from reader // Stop when button is pressed -// Or return TRUE when command is captured +// Or return true when command is captured //----------------------------------------------------------------------------- static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int *len) { @@ -830,13 +862,13 @@ static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int for(;;) { WDT_HIT(); - if(BUTTON_PRESS()) return FALSE; + if(BUTTON_PRESS()) return false; if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { b = (uint8_t)AT91C_BASE_SSC->SSC_RHR; if(MillerDecoding(b, 0)) { *len = Uart.len; - return TRUE; + return true; } } } @@ -1046,7 +1078,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) // clear trace clear_trace(); - set_tracing(TRUE); + set_tracing(true); // Prepare the responses of the anticollision phase // there will be not enough time to do this at the moment the reader sends it REQA @@ -1100,7 +1132,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) } else if(receivedCmd[0] == 0x50) { // Received a HALT if (tracing) { - LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); } p_response = NULL; } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request @@ -1114,7 +1146,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) } } else if (order == 7 && len == 8) { // Received {nr] and {ar} (part of authentication) if (tracing) { - LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); } uint32_t nr = bytes_to_num(receivedCmd,4); uint32_t ar = bytes_to_num(receivedCmd+4,4); @@ -1158,7 +1190,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) default: { // Never seen this command before if (tracing) { - LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); } Dbprintf("Received unknown command (len=%d):",len); Dbhexdump(len,receivedCmd,false); @@ -1178,7 +1210,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) if (prepare_tag_modulation(&dynamic_response_info,DYNAMIC_MODULATION_BUFFER_SIZE) == false) { Dbprintf("Error preparing tag response"); if (tracing) { - LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); } break; } @@ -1472,7 +1504,7 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNe // include correction bit if necessary if (Uart.parityBits & 0x01) { - correctionNeeded = TRUE; + correctionNeeded = true; } if(correctionNeeded) { // 1236, so correction bit needed @@ -1593,18 +1625,18 @@ bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_Start uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20; reader_EndTime = tag_StartTime - exact_fdt; reader_StartTime = reader_EndTime - reader_modlen; - if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE)) { - return FALSE; - } else return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE)); + if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, true)) { + return false; + } else return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, false)); } else { - return TRUE; + return true; } } //----------------------------------------------------------------------------- // Wait a certain time for tag response -// If a response is captured return TRUE -// If it takes too long return FALSE +// If a response is captured return true +// If it takes too long return false //----------------------------------------------------------------------------- static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receivedResponsePar, uint16_t offset) { @@ -1630,9 +1662,9 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receive b = (uint8_t)AT91C_BASE_SSC->SSC_RHR; if(ManchesterDecoding(b, offset, 0)) { NextTransferTime = MAX(NextTransferTime, Demod.endTime - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/16 + FRAME_DELAY_TIME_PICC_TO_PCD); - return TRUE; + return true; } else if (c++ > iso14a_timeout && Demod.state == DEMOD_UNSYNCD) { - return FALSE; + return false; } } } @@ -1650,7 +1682,7 @@ void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t // Log reader command in trace buffer if (tracing) { - LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, TRUE); + LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, true); } } @@ -1680,26 +1712,28 @@ void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing) int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity) { - if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) return FALSE; + if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) return false; if (tracing) { - LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE); + LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, false); } return Demod.len; } int ReaderReceive(uint8_t *receivedAnswer, uint8_t *parity) { - if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return FALSE; + if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return false; if (tracing) { - LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE); + LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, false); } return Demod.len; } -/* performs iso14443a anticollision procedure - * fills the uid pointer unless NULL - * fills resp_data unless NULL */ -int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, uint32_t *cuid_ptr) { +// performs iso14443a anticollision (optional) and card select procedure +// fills the uid and cuid pointer unless NULL +// fills the card info record unless NULL +// if anticollision is false, then the UID must be provided in uid_ptr[] +// and num_cascades must be set (1: 4 Byte UID, 2: 7 Byte UID, 3: 10 Byte UID) +int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades) { uint8_t wupa[] = { 0x52 }; // 0x26 - REQA 0x52 - WAKE-UP uint8_t sel_all[] = { 0x93,0x20 }; uint8_t sel_uid[] = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; @@ -1714,7 +1748,7 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u int len; // Broadcast for a card, WUPA (0x52) will force response from all cards in the field - ReaderTransmitBitsPar(wupa,7,0, NULL); + ReaderTransmitBitsPar(wupa, 7, NULL, NULL); // Receive the ATQA if(!ReaderReceive(resp, resp_par)) return 0; @@ -1725,9 +1759,11 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u memset(p_hi14a_card->uid,0,10); } - // clear uid - if (uid_ptr) { - memset(uid_ptr,0,10); + if (anticollision) { + // clear uid + if (uid_ptr) { + memset(uid_ptr,0,10); + } } // check for proprietary anticollision: @@ -1742,40 +1778,49 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // 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), NULL); - if (!ReaderReceive(resp, resp_par)) return 0; - - if (Demod.collisionPos) { // we had a collision and need to construct the UID bit by bit - memset(uid_resp, 0, 4); - uint16_t uid_resp_bits = 0; - uint16_t collision_answer_offset = 0; - // anti-collision-loop: - while (Demod.collisionPos) { - Dbprintf("Multiple tags detected. Collision after Bit %d", Demod.collisionPos); - for (uint16_t i = collision_answer_offset; i < Demod.collisionPos; i++, uid_resp_bits++) { // add valid UID bits before collision point - uint16_t UIDbit = (resp[i/8] >> (i % 8)) & 0x01; - uid_resp[uid_resp_bits / 8] |= UIDbit << (uid_resp_bits % 8); + if (anticollision) { + // SELECT_ALL + ReaderTransmit(sel_all, sizeof(sel_all), NULL); + if (!ReaderReceive(resp, resp_par)) return 0; + + if (Demod.collisionPos) { // we had a collision and need to construct the UID bit by bit + memset(uid_resp, 0, 4); + uint16_t uid_resp_bits = 0; + uint16_t collision_answer_offset = 0; + // anti-collision-loop: + while (Demod.collisionPos) { + Dbprintf("Multiple tags detected. Collision after Bit %d", Demod.collisionPos); + for (uint16_t i = collision_answer_offset; i < Demod.collisionPos; i++, uid_resp_bits++) { // add valid UID bits before collision point + uint16_t UIDbit = (resp[i/8] >> (i % 8)) & 0x01; + uid_resp[uid_resp_bits / 8] |= UIDbit << (uid_resp_bits % 8); + } + uid_resp[uid_resp_bits/8] |= 1 << (uid_resp_bits % 8); // next time select the card(s) with a 1 in the collision position + uid_resp_bits++; + // construct anticollosion command: + sel_uid[1] = ((2 + uid_resp_bits/8) << 4) | (uid_resp_bits & 0x07); // length of data in bytes and bits + for (uint16_t i = 0; i <= uid_resp_bits/8; i++) { + sel_uid[2+i] = uid_resp[i]; + } + collision_answer_offset = uid_resp_bits%8; + ReaderTransmitBits(sel_uid, 16 + uid_resp_bits, NULL); + if (!ReaderReceiveOffset(resp, collision_answer_offset, resp_par)) return 0; } - uid_resp[uid_resp_bits/8] |= 1 << (uid_resp_bits % 8); // next time select the card(s) with a 1 in the collision position - uid_resp_bits++; - // construct anticollosion command: - sel_uid[1] = ((2 + uid_resp_bits/8) << 4) | (uid_resp_bits & 0x07); // length of data in bytes and bits - for (uint16_t i = 0; i <= uid_resp_bits/8; i++) { - sel_uid[2+i] = uid_resp[i]; + // finally, add the last bits and BCC of the UID + for (uint16_t i = collision_answer_offset; i < (Demod.len-1)*8; i++, uid_resp_bits++) { + uint16_t UIDbit = (resp[i/8] >> (i%8)) & 0x01; + uid_resp[uid_resp_bits/8] |= UIDbit << (uid_resp_bits % 8); } - collision_answer_offset = uid_resp_bits%8; - ReaderTransmitBits(sel_uid, 16 + uid_resp_bits, NULL); - if (!ReaderReceiveOffset(resp, collision_answer_offset, resp_par)) return 0; + + } else { // no collision, use the response to SELECT_ALL as current uid + memcpy(uid_resp, resp, 4); } - // finally, add the last bits and BCC of the UID - for (uint16_t i = collision_answer_offset; i < (Demod.len-1)*8; i++, uid_resp_bits++) { - uint16_t UIDbit = (resp[i/8] >> (i%8)) & 0x01; - uid_resp[uid_resp_bits/8] |= UIDbit << (uid_resp_bits % 8); + } else { + if (cascade_level < num_cascades - 1) { + uid_resp[0] = 0x88; + memcpy(uid_resp+1, uid_ptr+cascade_level*3, 3); + } else { + memcpy(uid_resp, uid_ptr+cascade_level*3, 4); } - - } else { // no collision, use the response to SELECT_ALL as current uid - memcpy(uid_resp, resp, 4); } uid_resp_len = 4; @@ -1786,7 +1831,7 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // Construct SELECT UID command sel_uid[1] = 0x70; // transmitting a full UID (1 Byte cmd, 1 Byte NVB, 4 Byte UID, 1 Byte BCC, 2 Bytes CRC) - memcpy(sel_uid+2, uid_resp, 4); // the UID + memcpy(sel_uid+2, uid_resp, 4); // the UID received during anticollision, or the provided UID sel_uid[6] = sel_uid[2] ^ sel_uid[3] ^ sel_uid[4] ^ sel_uid[5]; // calculate and add BCC AppendCrc14443a(sel_uid, 7); // calculate and add CRC ReaderTransmit(sel_uid, sizeof(sel_uid), NULL); @@ -1794,19 +1839,18 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // Receive the SAK if (!ReaderReceive(resp, resp_par)) return 0; sak = resp[0]; - - // Test if more parts of the uid are coming + + // Test if more parts of the uid are coming if ((sak & 0x04) /* && uid_resp[0] == 0x88 */) { // Remove first byte, 0x88 is not an UID byte, it CT, see page 3 of: // http://www.nxp.com/documents/application_note/AN10927.pdf uid_resp[0] = uid_resp[1]; uid_resp[1] = uid_resp[2]; uid_resp[2] = uid_resp[3]; - uid_resp_len = 3; } - if(uid_ptr) { + if(uid_ptr && anticollision) { memcpy(uid_ptr + (cascade_level*3), uid_resp, uid_resp_len); } @@ -1917,17 +1961,17 @@ void ReaderIso14443a(UsbCommand *c) clear_trace(); } - set_tracing(TRUE); + set_tracing(true); if(param & ISO14A_REQUEST_TRIGGER) { - iso14a_set_trigger(TRUE); + iso14a_set_trigger(true); } if(param & ISO14A_CONNECT) { iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); if(!(param & ISO14A_NO_SELECT)) { iso14a_card_select_t *card = (iso14a_card_select_t*)buf; - arg0 = iso14443a_select_card(NULL,card,NULL); + arg0 = iso14443a_select_card(NULL, card, NULL, true, 0); cmd_send(CMD_ACK,arg0,card->uidlen,0,buf,sizeof(iso14a_card_select_t)); } } @@ -1981,7 +2025,7 @@ void ReaderIso14443a(UsbCommand *c) } if(param & ISO14A_REQUEST_TRIGGER) { - iso14a_set_trigger(FALSE); + iso14a_set_trigger(false); } if(param & ISO14A_NO_DISCONNECT) { @@ -2041,12 +2085,12 @@ void ReaderMifare(bool first_try) BigBuf_free(); clear_trace(); - set_tracing(TRUE); + set_tracing(true); byte_t nt_diff = 0; uint8_t par[1] = {0}; // maximum 8 Bytes to be sent here, 1 byte parity is therefore enough static byte_t par_low = 0; - bool led_on = TRUE; + bool led_on = true; uint8_t uid[10] ={0}; uint32_t cuid; @@ -2096,7 +2140,7 @@ void ReaderMifare(bool first_try) uint32_t select_time; uint32_t halt_time; - for(uint16_t i = 0; TRUE; i++) { + for(uint16_t i = 0; true; i++) { LED_C_ON(); WDT_HIT(); @@ -2124,7 +2168,7 @@ void ReaderMifare(bool first_try) SpinDelay(100); } - if(!iso14443a_select_card(uid, NULL, &cuid)) { + if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) { if (MF_DBGLEVEL >= 1) Dbprintf("Mifare: Can't select card"); continue; } @@ -2305,21 +2349,9 @@ void ReaderMifare(bool first_try) FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LEDsoff(); - set_tracing(FALSE); + set_tracing(false); } -typedef struct { - uint32_t cuid; - uint8_t sector; - uint8_t keytype; - uint32_t nonce; - uint32_t ar; - uint32_t nr; - uint32_t nonce2; - uint32_t ar2; - uint32_t nr2; -} nonces_t; - /** *MIFARE 1K simulate. * @@ -2329,6 +2361,7 @@ typedef struct { * FLAG_7B_UID_IN_DATA - means that there is a 7-byte UID in the data-section, we're expected to use that * FLAG_10B_UID_IN_DATA - use 10-byte UID in the data-section not finished * FLAG_NR_AR_ATTACK - means we should collect NR_AR responses for bruteforcing later + * FLAG_RANDOM_NONCE - means we should generate some pseudo-random nonce data (only allows moebius attack) *@param exitAfterNReads, exit simulation after n blocks have been read, 0 is infinite ... * (unless reader attack mode enabled then it runs util it gets enough nonces to recover all keys attmpted) */ @@ -2336,7 +2369,6 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * { int cardSTATE = MFEMUL_NOFIELD; int _UID_LEN = 0; // 4, 7, 10 - int _7BUID = 0; int vHf = 0; // in mV int res; uint32_t selTimer = 0; @@ -2360,14 +2392,13 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * uint8_t response[MAX_MIFARE_FRAME_SIZE]; uint8_t response_par[MAX_MIFARE_PARITY_SIZE]; - uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID + uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; uint8_t rUIDBCC2[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; // !!! uint8_t rUIDBCC3[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; - uint8_t rSAK[] = {0x08, 0xb6, 0xdd}; - uint8_t rSAK1[] = {0x04, 0xda, 0x17}; - uint8_t rSAK2[] = {0x04, 0xda, 0x17}; //need to look up + uint8_t rSAKfinal[]= {0x08, 0xb6, 0xdd}; // mifare 1k indicated + uint8_t rSAK1[] = {0x04, 0xda, 0x17}; // indicate UID not finished uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04}; uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00}; @@ -2375,21 +2406,26 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * //Here, we collect UID,sector,keytype,NT,AR,NR,NT2,AR2,NR2 // This will be used in the reader-only attack. - //allow collecting up to 8 sets of nonces to allow recovery of 8 keys - #define ATTACK_KEY_COUNT 8 - nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*2 for 2 separate attack types + //allow collecting up to 7 sets of nonces to allow recovery of up to 7 keys + #define ATTACK_KEY_COUNT 7 // keep same as define in cmdhfmf.c -> readerAttack() (Cannot be more than 7) + nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*2 for 2 separate attack types (nml, moebius) memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp)); - uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; + uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; //*2 for 2nd attack type (moebius) memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected)); - bool collectMoebius = false; uint8_t nonce1_count = 0; uint8_t nonce2_count = 0; uint8_t moebius_n_count = 0; + bool gettingMoebius = false; uint8_t mM = 0; //moebius_modifier for collection storage // Authenticate response - nonce - uint32_t nonce = bytes_to_num(rAUTH_NT, 4); + uint32_t nonce; + if (flags & FLAG_RANDOM_NONCE) { + nonce = prand(); + } else { + nonce = bytes_to_num(rAUTH_NT, 4); + } //-- Determine the UID // Can be set from emulator memory, incoming data @@ -2404,7 +2440,6 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * // 7B uid comes from data-portion of packet memcpy(&rUIDBCC1[1],datain,3); memcpy(rUIDBCC2, datain+3, 4); - _7BUID = true; _UID_LEN = 7; } else if (flags & FLAG_10B_UID_IN_DATA) { memcpy(&rUIDBCC1[1], datain, 3); @@ -2414,8 +2449,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } else { // get UID from emul memory - guess at length emlGetMemBt(receivedCmd, 7, 1); - _7BUID = !(receivedCmd[0] == 0x00); - if (!_7BUID) { // ---------- 4BUID + if (receivedCmd[0] == 0x00) { // ---------- 4BUID emlGetMemBt(rUIDBCC1, 0, 4); _UID_LEN = 4; } else { // ---------- 7BUID @@ -2501,10 +2535,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * // clear trace clear_trace(); - set_tracing(TRUE); + set_tracing(true); - bool finished = FALSE; - while (!BUTTON_PRESS() && !finished && !usb_poll_validate_length()) { + bool finished = false; + bool button_pushed = BUTTON_PRESS(); + while (!button_pushed && !finished && !usb_poll_validate_length()) { WDT_HIT(); // find reader field @@ -2514,8 +2549,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * cardSTATE_TO_IDLE(); LED_A_ON(); } - } - if (cardSTATE == MFEMUL_NOFIELD) continue; + } + if (cardSTATE == MFEMUL_NOFIELD) { + button_pushed = BUTTON_PRESS(); + continue; + } //Now, get data res = EmGetCmd(receivedCmd, &len, receivedCmd_par); @@ -2526,7 +2564,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } else if (res == 1) { break; //return value 1 means button press } - + // REQ or WUP request in ANY state and WUP in HALTED state if (len == 1 && ((receivedCmd[0] == ISO14443A_CMD_REQA && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == ISO14443A_CMD_WUPA)) { selTimer = GetTickCount(); @@ -2538,6 +2576,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * LED_C_OFF(); crypto1_destroy(pcs); cardAUTHKEY = 0xff; + if (flags & FLAG_RANDOM_NONCE) { + nonce = prand(); + } continue; } @@ -2545,31 +2586,29 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * case MFEMUL_NOFIELD: case MFEMUL_HALTED: case MFEMUL_IDLE:{ - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } case MFEMUL_SELECT1:{ - // select all - if (len == 2 && (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x20)) { + // select all - 0x93 0x20 + if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x20)) { if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL received"); EmSendCmd(rUIDBCC1, sizeof(rUIDBCC1)); break; } - if (MF_DBGLEVEL >= 4 && len == 9 && receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 ) - { - Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]); - } - // select card - // check correct sak values... (marshmellow) - if (len == 9 && - (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) { + // select card - 0x93 0x70 ... + if (len == 9 && + (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) { + if (MF_DBGLEVEL >= 4) + Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]); + switch(_UID_LEN) { case 4: cardSTATE = MFEMUL_WORK; LED_B_ON(); if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer); - EmSendCmd(rSAK, sizeof(rSAK)); + EmSendCmd(rSAKfinal, sizeof(rSAKfinal)); break; case 7: cardSTATE = MFEMUL_SELECT2; @@ -2577,7 +2616,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * break; case 10: cardSTATE = MFEMUL_SELECT2; - EmSendCmd(rSAK2, sizeof(rSAK2)); + EmSendCmd(rSAK1, sizeof(rSAK1)); break; default:break; } @@ -2588,19 +2627,21 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } case MFEMUL_SELECT3:{ if (!len) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } + // select all cl3 - 0x97 0x20 if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 && receivedCmd[1] == 0x20)) { EmSendCmd(rUIDBCC3, sizeof(rUIDBCC3)); break; } + // select card cl3 - 0x97 0x70 if (len == 9 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC3, 4) == 0) ) { - EmSendCmd(rSAK2, sizeof(rSAK2)); + EmSendCmd(rSAKfinal, sizeof(rSAKfinal)); cardSTATE = MFEMUL_WORK; LED_B_ON(); if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol3 time: %d", GetTickCount() - selTimer); @@ -2610,20 +2651,19 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * break; } case MFEMUL_AUTH1:{ - if( len != 8) - { + if( len != 8) { cardSTATE_TO_IDLE(); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } uint32_t nr = bytes_to_num(receivedCmd, 4); uint32_t ar = bytes_to_num(&receivedCmd[4], 4); - //Collect AR/NR per keytype & sector + // Collect AR/NR per keytype & sector if(flags & FLAG_NR_AR_ATTACK) { for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { - if ( ar_nr_collected[i+mM]==0 || (cardAUTHSC == ar_nr_resp[i+mM].sector && cardAUTHKEY == ar_nr_resp[i+mM].keytype && ar_nr_collected[i+mM] > 0) ) { + if ( ar_nr_collected[i+mM]==0 || ((cardAUTHSC == ar_nr_resp[i+mM].sector) && (cardAUTHKEY == ar_nr_resp[i+mM].keytype) && (ar_nr_collected[i+mM] > 0)) ) { // if first auth for sector, or matches sector and keytype of previous auth if (ar_nr_collected[i+mM] < 2) { // if we haven't already collected 2 nonces for this sector @@ -2638,7 +2678,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * ar_nr_resp[i+mM].nr = nr; ar_nr_resp[i+mM].ar = ar; nonce1_count++; - //add this nonce to first moebius nonce + // add this nonce to first moebius nonce ar_nr_resp[i+ATTACK_KEY_COUNT].cuid = cuid; ar_nr_resp[i+ATTACK_KEY_COUNT].sector = cardAUTHSC; ar_nr_resp[i+ATTACK_KEY_COUNT].keytype = cardAUTHKEY; @@ -2646,35 +2686,42 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * ar_nr_resp[i+ATTACK_KEY_COUNT].nr = nr; ar_nr_resp[i+ATTACK_KEY_COUNT].ar = ar; ar_nr_collected[i+ATTACK_KEY_COUNT]++; - } else { //second nonce collect (std and moebius) + } else { // second nonce collect (std and moebius) ar_nr_resp[i+mM].nonce2 = nonce; ar_nr_resp[i+mM].nr2 = nr; ar_nr_resp[i+mM].ar2 = ar; - if (!collectMoebius) { + if (!gettingMoebius) { nonce2_count++; - //check if this was the last second nonce we need for std attack + // check if this was the last second nonce we need for std attack if ( nonce2_count == nonce1_count ) { - //done collecting std test switch to moebius - collectMoebius = true; + // done collecting std test switch to moebius + // first finish incrementing last sample + ar_nr_collected[i+mM]++; + // switch to moebius collection + gettingMoebius = true; mM = ATTACK_KEY_COUNT; - nonce = nonce*7; + if (flags & FLAG_RANDOM_NONCE) { + nonce = prand(); + } else { + nonce = nonce*7; + } + break; } } else { moebius_n_count++; - //if we've collected all the nonces we need - finish. + // if we've collected all the nonces we need - finish. if (nonce1_count == moebius_n_count) finished = true; } } ar_nr_collected[i+mM]++; - break; } - } else { //already collected 2 nonces for sector - reader looping? - quit - //finished = true; } + // we found right spot for this nonce stop looking + break; } } } - + // --- crypto crypto1_word(pcs, nr , 1); cardRr = ar ^ crypto1_word(pcs, 0, 0); @@ -2689,7 +2736,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * // reader to do a WUPA after a while. /Martin // -- which is the correct response. /piwi cardSTATE_TO_IDLE(); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } @@ -2708,26 +2755,27 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } case MFEMUL_SELECT2:{ if (!len) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; - } - if (len == 2 && (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x20)) { + } + // select all cl2 - 0x95 0x20 + if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x20)) { EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2)); break; } - // select 2 card + // select cl2 card - 0x95 0x70 xxxxxxxxxxxx if (len == 9 && - (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) { - //which sak now? (marshmellow) - EmSendCmd(rSAK, sizeof(rSAK)); + (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) { switch(_UID_LEN) { case 7: + EmSendCmd(rSAKfinal, sizeof(rSAKfinal)); cardSTATE = MFEMUL_WORK; LED_B_ON(); if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer); break; case 10: + EmSendCmd(rSAK1, sizeof(rSAK1)); cardSTATE = MFEMUL_SELECT3; break; default:break; @@ -2737,7 +2785,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * // i guess there is a command). go into the work state. if (len != 4) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } cardSTATE = MFEMUL_WORK; @@ -2747,7 +2795,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * case MFEMUL_WORK:{ if (len == 0) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } @@ -2759,7 +2807,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) { - if (receivedCmd[1] >= 16 * 4) { + + // if authenticating to a block that shouldn't exist - as long as we are not doing the reader attack + if (receivedCmd[1] >= 16 * 4 && !(flags & FLAG_NR_AR_ATTACK)) { //is this the correct response to an auth on a out of range block? marshmellow EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on out of range block: %d (0x%02x), nacking",receivedCmd[0],receivedCmd[1],receivedCmd[1]); @@ -2805,7 +2855,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } if(len != 4) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } @@ -2884,7 +2934,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * LED_C_OFF(); cardSTATE = MFEMUL_HALTED; if (MF_DBGLEVEL >= 4) Dbprintf("--> HALTED. Selected time: %d ms", GetTickCount() - selTimer); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); break; } // RATS @@ -2905,7 +2955,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * cardSTATE = MFEMUL_WORK; } else { cardSTATE_TO_IDLE(); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); } break; } @@ -2918,7 +2968,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * cardSTATE_TO_IDLE(); break; } - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); cardINTREG = cardINTREG + ans; cardSTATE = MFEMUL_WORK; break; @@ -2931,7 +2981,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * cardSTATE_TO_IDLE(); break; } - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); cardINTREG = cardINTREG - ans; cardSTATE = MFEMUL_WORK; break; @@ -2944,18 +2994,18 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * cardSTATE_TO_IDLE(); break; } - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); cardSTATE = MFEMUL_WORK; break; } } + button_pushed = BUTTON_PRESS(); } FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LEDsoff(); - if(flags & FLAG_NR_AR_ATTACK && MF_DBGLEVEL >= 1) - { + if(flags & FLAG_NR_AR_ATTACK && MF_DBGLEVEL >= 1) { for ( uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { if (ar_nr_collected[i] == 2) { Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen()); - if(flags & FLAG_INTERACTIVE)// Interactive mode flag, means we need to send ACK - { + if(flags & FLAG_INTERACTIVE) { // Interactive mode flag, means we need to send ACK //Send the collected ar_nr in the response - cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_resp,sizeof(ar_nr_resp)); + cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,button_pushed,0,&ar_nr_resp,sizeof(ar_nr_resp)); } - } - //----------------------------------------------------------------------------- // MIFARE sniffer. // @@ -3009,7 +3056,7 @@ void RAMFUNC SniffMifare(uint8_t param) { LEDsoff(); // init trace buffer clear_trace(); - set_tracing(TRUE); + set_tracing(true); // The command (reader -> tag) that we're receiving. // The length of a received command will in most cases be no more than 18 bytes. @@ -3030,8 +3077,8 @@ void RAMFUNC SniffMifare(uint8_t param) { uint8_t previous_data = 0; int maxDataLen = 0; int dataLen = 0; - bool ReaderIsActive = FALSE; - bool TagIsActive = FALSE; + bool ReaderIsActive = false; + bool TagIsActive = false; // Set up the demodulator for tag -> reader responses. DemodInit(receivedResponse, receivedResponsePar); @@ -3048,7 +3095,7 @@ void RAMFUNC SniffMifare(uint8_t param) { MfSniffInit(); // And now we loop, receiving samples. - for(uint32_t sniffCounter = 0; TRUE; ) { + for(uint32_t sniffCounter = 0; true; ) { if(BUTTON_PRESS()) { DbpString("cancelled by button"); @@ -3066,8 +3113,8 @@ void RAMFUNC SniffMifare(uint8_t param) { sniffCounter = 0; data = dmaBuf; maxDataLen = 0; - ReaderIsActive = FALSE; - TagIsActive = FALSE; + ReaderIsActive = false; + TagIsActive = false; FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); // set transfer address and number of bytes. Start transfer. } } @@ -3109,7 +3156,7 @@ void RAMFUNC SniffMifare(uint8_t param) { uint8_t readerdata = (previous_data & 0xF0) | (*data >> 4); if(MillerDecoding(readerdata, (sniffCounter-1)*4)) { LED_C_INV(); - if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, TRUE)) break; + if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, true)) break; /* And ready to receive another command. */ UartInit(receivedCmd, receivedCmdPar); @@ -3125,7 +3172,7 @@ void RAMFUNC SniffMifare(uint8_t param) { if(ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) { LED_C_INV(); - if (MfSniffLogic(receivedResponse, Demod.len, Demod.parity, Demod.bitCount, FALSE)) break; + if (MfSniffLogic(receivedResponse, Demod.len, Demod.parity, Demod.bitCount, false)) break; // And ready to receive another response. DemodReset();