X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/c188b1b9b24b65a60c594364b474edba7c4ab8a2..6c676179226daa6c97c13a179f18406ba30c85c8:/armsrc/iso14443a.c diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c index 29d9728a..bfbc70c7 100644 --- a/armsrc/iso14443a.c +++ b/armsrc/iso14443a.c @@ -20,6 +20,8 @@ #include "crapto1.h" #include "mifareutil.h" #include "BigBuf.h" +#include "parity.h" + static uint32_t iso14a_timeout; int rsamples = 0; uint8_t trigger = 0; @@ -121,26 +123,6 @@ 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; } @@ -178,11 +160,6 @@ 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; @@ -191,7 +168,7 @@ 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 @@ -1000,6 +977,15 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) response8[0] = 0x80; response8[1] = 0x80; ComputeCrc14443(CRC_14443_A, response8, 2, &response8[2], &response8[3]); + // uid not supplied then get from emulator memory + if (data[0]==0) { + uint16_t start = 4 * (0+12); + uint8_t emdata[8]; + emlGetMemBt( emdata, start, sizeof(emdata)); + memcpy(data, emdata, 3); //uid bytes 0-2 + memcpy(data+3, emdata+4, 4); //uid bytes 3-7 + flags |= FLAG_7B_UID_IN_DATA; + } } break; default: { Dbprintf("Error: unkown tagtype (%d)",tagType); @@ -1057,12 +1043,12 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) // TC(1) = 0x02: CID supported, NAD not supported ComputeCrc14443(CRC_14443_A, response6, 4, &response6[4], &response6[5]); - // Prepare GET_VERSION (different for EV-1 / NTAG) + // Prepare GET_VERSION (different for UL EV-1 / NTAG) //uint8_t response7_EV1[] = {0x00, 0x04, 0x03, 0x01, 0x01, 0x00, 0x0b, 0x03, 0xfd, 0xf7}; //EV1 48bytes VERSION. - uint8_t response7_NTAG[] = {0x00, 0x04, 0x04, 0x02, 0x01, 0x00, 0x11, 0x03, 0x01, 0x9e}; //NTAG 215 + //uint8_t response7_NTAG[] = {0x00, 0x04, 0x04, 0x02, 0x01, 0x00, 0x11, 0x03, 0x01, 0x9e}; //NTAG 215 // Prepare CHK_TEARING - uint8_t response9[] = {0xBD,0x90,0x3f}; + //uint8_t response9[] = {0xBD,0x90,0x3f}; #define TAG_RESPONSE_COUNT 10 tag_response_info_t responses[TAG_RESPONSE_COUNT] = { @@ -1073,9 +1059,9 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) { .response = response3a, .response_n = sizeof(response3a) }, // Acknowledge select - cascade 2 { .response = response5, .response_n = sizeof(response5) }, // Authentication answer (random nonce) { .response = response6, .response_n = sizeof(response6) }, // dummy ATS (pseudo-ATR), answer to RATS - { .response = response7_NTAG, .response_n = sizeof(response7_NTAG) }, // EV1/NTAG GET_VERSION response + //{ .response = response7_NTAG, .response_n = sizeof(response7_NTAG)}, // EV1/NTAG GET_VERSION response { .response = response8, .response_n = sizeof(response8) }, // EV1/NTAG PACK response - { .response = response9, .response_n = sizeof(response9) } // EV1/NTAG CHK_TEAR response + //{ .response = response9, .response_n = sizeof(response9) } // EV1/NTAG CHK_TEAR response }; // Allocate 512 bytes for the dynamic modulation, created when the reader queries for it @@ -1128,7 +1114,6 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) LED_A_ON(); for(;;) { // Clean receive command buffer - if(!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) { DbpString("Button press"); break; @@ -1152,33 +1137,18 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) p_response = &responses[4]; order = 30; } else if(receivedCmd[0] == 0x30) { // Received a (plain) READ uint8_t block = receivedCmd[1]; - if ( tagType == 7 ) { - uint16_t start = 4 * block; - - /*if ( block < 4 ) { - //NTAG 215 - uint8_t blockdata[50] = { - data[0],data[1],data[2], 0x88 ^ data[0] ^ data[1] ^ data[2], - data[3],data[4],data[5],data[6], - data[3] ^ data[4] ^ data[5] ^ data[6],0x48,0x0f,0xe0, - 0xe1,0x10,0x12,0x00, - 0x03,0x00,0xfe,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00, - 0x00,0x00}; - AppendCrc14443a(blockdata+start, 16); - EmSendCmdEx( blockdata+start, MAX_MIFARE_FRAME_SIZE, false); - } else {*/ + // if Ultralight or NTAG (4 byte blocks) + if ( tagType == 7 || tagType == 2 ) { + //first 12 blocks of emu are [getversion answer - check tearing - pack - 0x00 - signature] + uint16_t start = 4 * (block+12); uint8_t emdata[MAX_MIFARE_FRAME_SIZE]; emlGetMemBt( emdata, start, 16); AppendCrc14443a(emdata, 16); EmSendCmdEx(emdata, sizeof(emdata), false); - //} + // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below p_response = NULL; - - } else { - EmSendCmdEx(data+(4*block),16,false); + } else { // all other tags (16 byte block tags) + EmSendCmdEx(data+(4*receivedCmd[1]),16,false); // Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]); // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below p_response = NULL; @@ -1186,7 +1156,8 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) } else if(receivedCmd[0] == 0x3A) { // Received a FAST READ (ranged read) uint8_t emdata[MAX_FRAME_SIZE]; - int start = receivedCmd[1] * 4; + //first 12 blocks of emu are [getversion answer - check tearing - pack - 0x00 - signature] + int start = (receivedCmd[1]+12) * 4; int len = (receivedCmd[2] - receivedCmd[1] + 1) * 4; emlGetMemBt( emdata, start, len); AppendCrc14443a(emdata, len); @@ -1195,13 +1166,19 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) } else if(receivedCmd[0] == 0x3C && tagType == 7) { // Received a READ SIGNATURE -- // ECC data, taken from a NTAG215 amiibo token. might work. LEN: 32, + 2 crc - uint8_t data[] = {0x56,0x06,0xa6,0x4f,0x43,0x32,0x53,0x6f, - 0x43,0xda,0x45,0xd6,0x61,0x38,0xaa,0x1e, - 0xcf,0xd3,0x61,0x36,0xca,0x5f,0xbb,0x05, - 0xce,0x21,0x24,0x5b,0xa6,0x7a,0x79,0x07, - 0x00,0x00}; - AppendCrc14443a(data, sizeof(data)-2); - EmSendCmdEx(data,sizeof(data),false); + //first 12 blocks of emu are [getversion answer - check tearing - pack - 0x00 - signature] + uint16_t start = 4 * 4; + uint8_t emdata[34]; + emlGetMemBt( emdata, start, 32); + AppendCrc14443a(emdata, 32); + EmSendCmdEx(emdata, sizeof(emdata), false); + //uint8_t data[] = {0x56,0x06,0xa6,0x4f,0x43,0x32,0x53,0x6f, + // 0x43,0xda,0x45,0xd6,0x61,0x38,0xaa,0x1e, + // 0xcf,0xd3,0x61,0x36,0xca,0x5f,0xbb,0x05, + // 0xce,0x21,0x24,0x5b,0xa6,0x7a,0x79,0x07, + // 0x00,0x00}; + //AppendCrc14443a(data, sizeof(data)-2); + //EmSendCmdEx(data,sizeof(data),false); p_response = NULL; } else if (receivedCmd[0] == 0x39 && tagType == 7) { // Received a READ COUNTER -- uint8_t index = receivedCmd[1]; @@ -1224,7 +1201,16 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) p_response = NULL; } else if(receivedCmd[0] == 0x3E && tagType == 7) { // Received a CHECK_TEARING_EVENT -- - p_response = &responses[9]; + //first 12 blocks of emu are [getversion answer - check tearing - pack - 0x00 - signature] + uint8_t emdata[3]; + uint8_t counter=0; + if (receivedCmd[1]<3) counter = receivedCmd[1]; + emlGetMemBt( emdata, 10+counter, 1); + AppendCrc14443a(emdata, sizeof(emdata)-2); + EmSendCmdEx(emdata, sizeof(emdata), false); + p_response = NULL; + //p_response = &responses[9]; + } else if(receivedCmd[0] == 0x50) { // Received a HALT if (tracing) { @@ -1234,7 +1220,12 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request if ( tagType == 7 ) { // IF NTAG /EV1 0x60 == GET_VERSION, not a authentication request. - p_response = &responses[7]; + uint8_t emdata[10]; + emlGetMemBt( emdata, 0, 8 ); + AppendCrc14443a(emdata, sizeof(emdata)-2); + EmSendCmdEx(emdata, sizeof(emdata), false); + p_response = NULL; + //p_response = &responses[7]; } else { p_response = &responses[5]; order = 7; } @@ -1305,13 +1296,18 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) else if (receivedCmd[0] == 0x1b) // NTAG / EV-1 authentication { if ( tagType == 7 ) { - p_response = &responses[8]; // PACK response + uint16_t start = 13; //first 4 blocks of emu are [getversion answer - check tearing - pack - 0x00] + uint8_t emdata[4]; + emlGetMemBt( emdata, start, 2); + AppendCrc14443a(emdata, 2); + EmSendCmdEx(emdata, sizeof(emdata), false); + p_response = NULL; + //p_response = &responses[8]; // PACK response uint32_t pwd = bytes_to_num(receivedCmd+1,4); if ( MF_DBGLEVEL >= 3) Dbprintf("Auth attempt: %08x", pwd); } - } - else { + } else { // Check for ISO 14443A-4 compliant commands, look at left nibble switch (receivedCmd[0]) { case 0x02: @@ -2568,7 +2564,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * uint8_t rAUTH_NT[] = {0x01, 0x01, 0x01, 0x01}; uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00}; - //Here, we collect UID,NT,AR,NR,UID2,NT2,AR2,NR2 + //Here, we collect UID1,UID2,NT,AR,NR,0,0,NT2,AR2,NR2 // This can be used in a reader-only attack. // (it can also be retrieved via 'hf 14a list', but hey... uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0,0,0,0}; @@ -2643,7 +2639,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * bool finished = FALSE; - while (!BUTTON_PRESS() && !finished) { + while (!BUTTON_PRESS() && !finished && !usb_poll_validate_length()) { WDT_HIT(); // find reader field @@ -3040,7 +3036,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t * } else { Dbprintf("Failed to obtain two AR/NR pairs!"); if(ar_nr_collected > 0 ) { - Dbprintf("Only got these: UID=%07x%08x, nonce=%08x, AR1=%08x, NR1=%08x", + Dbprintf("Only got these: UID=%06x%08x, nonce=%08x, AR1=%08x, NR1=%08x", ar_nr_responses[0], // UID1 ar_nr_responses[1], // UID2 ar_nr_responses[2], // NT @@ -3172,7 +3168,7 @@ void RAMFUNC SniffMifare(uint8_t param) { if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, TRUE)) break; /* And ready to receive another command. */ - UartReset(); + UartInit(receivedCmd, receivedCmdPar); /* And also reset the demod code */ DemodReset(); @@ -3189,10 +3185,8 @@ void RAMFUNC SniffMifare(uint8_t param) { // And ready to receive another response. DemodReset(); - // And reset the Miller decoder including its (now outdated) input buffer UartInit(receivedCmd, receivedCmdPar); - // why not UartReset? } TagIsActive = (Demod.state != DEMOD_UNSYNCD); }