X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0194ce8fc842da0e40b9d7bbfcb1837f508de9ce..f3c2458aa6dde13832473a313f89ad0a22fc54e0:/armsrc/iso14443a.c
diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 59edffc9..a2014079 100644
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -9,19 +9,7 @@
//-----------------------------------------------------------------------------
// Routines to support ISO 14443 type A.
//-----------------------------------------------------------------------------
-
-#include "proxmark3.h"
-#include "apps.h"
-#include "util.h"
-#include "string.h"
-#include "cmd.h"
-#include "iso14443crc.h"
#include "iso14443a.h"
-#include "iso14443b.h"
-#include "crapto1.h"
-#include "mifareutil.h"
-#include "BigBuf.h"
-#include "parity.h"
static uint32_t iso14a_timeout;
int rsamples = 0;
@@ -510,6 +498,7 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non
// Record the sequence of commands sent by the reader to the tag, with
// triggering so that we start recording at the point that the tag is moved
// near the reader.
+// "hf 14a sniff"
//-----------------------------------------------------------------------------
void RAMFUNC SniffIso14443a(uint8_t param) {
// param:
@@ -550,7 +539,10 @@ void RAMFUNC SniffIso14443a(uint8_t param) {
UartInit(receivedCmd, receivedCmdPar);
// Setup and start DMA.
- FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);
+ if ( !FpgaSetupSscDma((uint8_t*) dmaBuf, DMA_BUFFER_SIZE) ){
+ if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
+ return;
+ }
// 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
@@ -660,13 +652,13 @@ void RAMFUNC SniffIso14443a(uint8_t param) {
}
} // main cycle
+ if (MF_DBGLEVEL >= 1) {
+ Dbprintf("maxDataLen=%d, Uart.state=%x, Uart.len=%d", maxDataLen, Uart.state, Uart.len);
+ Dbprintf("traceLen=%d, Uart.output[0]=%08x", BigBuf_get_traceLen(), (uint32_t)Uart.output[0]);
+ }
FpgaDisableSscDma();
- LEDsoff();
-
- Dbprintf("maxDataLen=%d, Uart.state=%x, Uart.len=%d", maxDataLen, Uart.state, Uart.len);
- Dbprintf("traceLen=%d, Uart.output[0]=%08x", BigBuf_get_traceLen(), (uint32_t)Uart.output[0]);
-
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
set_tracing(FALSE);
}
@@ -853,15 +845,14 @@ bool prepare_allocated_tag_modulation(tag_response_info_t* response_info) {
//-----------------------------------------------------------------------------
// Main loop of simulated tag: receive commands from reader, decide what
// response to send, and send it.
+// 'hf 14a sim'
//-----------------------------------------------------------------------------
void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
- //Here, we collect CUID, NT, AR, NR, NT2, AR2, NR2
- // This can be used in a reader-only attack.
- uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0,0,0,0};
- uint8_t ar_nr_collected = 0;
uint8_t sak = 0;
-
+ uint32_t cuid = 0;
+ uint32_t nonce = 0;
+
// PACK response to PWD AUTH for EV1/NTAG
uint8_t response8[4] = {0,0,0,0};
// Counter for EV1/NTAG
@@ -869,6 +860,24 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
// The first response contains the ATQA (note: bytes are transmitted in reverse order).
uint8_t response1[] = {0,0};
+
+ // Here, we collect CUID, block1, keytype1, NT1, NR1, AR1, CUID, block2, keytyp2, NT2, NR2, AR2
+ // it should also collect block, keytype.
+ uint8_t cardAUTHSC = 0;
+ uint8_t cardAUTHKEY = 0xff; // no authentication
+ // allow collecting up to 8 sets of nonces to allow recovery of up to 8 keys
+ #define ATTACK_KEY_COUNT 8 // keep same as define in cmdhfmf.c -> readerAttack()
+ 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]; //*2 for 2nd attack type (moebius)
+ memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));
+ 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
+
switch (tagType) {
case 1: { // MIFARE Classic 1k
@@ -926,7 +935,7 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
// For UID size 7,
uint8_t response2a[5] = {0x00};
- if (flags & FLAG_7B_UID_IN_DATA) {
+ if ( (flags & FLAG_7B_UID_IN_DATA) == FLAG_7B_UID_IN_DATA ) {
response2[0] = 0x88; // Cascade Tag marker
response2[1] = data[0];
response2[2] = data[1];
@@ -941,11 +950,14 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
// Configure the ATQA and SAK accordingly
response1[0] |= 0x40;
sak |= 0x04;
+
+ cuid = bytes_to_num(data+3, 4);
} else {
memcpy(response2, data, 4);
// Configure the ATQA and SAK accordingly
response1[0] &= 0xBF;
sak &= 0xFB;
+ cuid = bytes_to_num(data, 4);
}
// Calculate the BitCountCheck (BCC) for the first 4 bytes of the UID.
@@ -968,6 +980,9 @@ 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]);
+ // the randon nonce
+ nonce = bytes_to_num(response5, 4);
+
// 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
@@ -1041,7 +1056,11 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
DbpString("Button press");
break;
}
-
+
+ // incease nonce at every command recieved
+ nonce++;
+ num_to_bytes(nonce, 4, response5);
+
p_response = NULL;
// Okay, look at the command now.
@@ -1064,14 +1083,18 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
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);
+ 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 { // all other tags (16 byte block tags)
- EmSendCmdEx(data+(4*receivedCmd[1]),16,false);
+ uint8_t emdata[MAX_MIFARE_FRAME_SIZE];
+ emlGetMemBt( emdata, block, 16);
+ AppendCrc14443a(emdata, 16);
+ EmSendCmdEx(emdata, sizeof(emdata), false);
+ //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;
@@ -1124,15 +1147,16 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
} else if(receivedCmd[0] == ISO14443A_CMD_HALT) { // Received a HALT
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] == MIFARE_AUTH_KEYA || receivedCmd[0] == MIFARE_AUTH_KEYB) { // Received an authentication request
-
+ } else if(receivedCmd[0] == MIFARE_AUTH_KEYA || receivedCmd[0] == MIFARE_AUTH_KEYB) { // Received an authentication request
if ( tagType == 7 ) { // IF NTAG /EV1 0x60 == GET_VERSION, not a authentication request.
uint8_t emdata[10];
emlGetMemBt( emdata, 0, 8 );
AppendCrc14443a(emdata, sizeof(emdata)-2);
- EmSendCmdEx(emdata, sizeof(emdata), false);
+ EmSendCmdEx(emdata, sizeof(emdata), false);
p_response = NULL;
} else {
+ cardAUTHSC = receivedCmd[1] / 4; // received block num
+ cardAUTHKEY = receivedCmd[0] - 0x60;
p_response = &responses[5]; order = 7;
}
} else if(receivedCmd[0] == ISO14443A_CMD_RATS) { // Received a RATS request
@@ -1144,40 +1168,72 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
}
} else if (order == 7 && len == 8) { // Received {nr] and {ar} (part of authentication)
LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);
- uint32_t nonce = bytes_to_num(response5,4);
uint32_t nr = bytes_to_num(receivedCmd,4);
uint32_t ar = bytes_to_num(receivedCmd+4,4);
- if(flags & FLAG_NR_AR_ATTACK ) {
- if(ar_nr_collected < 2){
- // Avoid duplicates... probably not necessary, nr should vary.
- //if(ar_nr_responses[3] != nr){
- ar_nr_responses[ar_nr_collected*4] = 0;
- ar_nr_responses[ar_nr_collected*4+1] = nonce;
- ar_nr_responses[ar_nr_collected*4+2] = nr;
- ar_nr_responses[ar_nr_collected*4+3] = ar;
- ar_nr_collected++;
- //}
- }
-
- if(ar_nr_collected > 1 ) {
- if (MF_DBGLEVEL >= 2) {
- Dbprintf("Collected two pairs of AR/NR which can be used to extract keys from reader:");
- Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",
- ar_nr_responses[0], // CUID
- ar_nr_responses[1], // NT
- ar_nr_responses[2], // AR1
- ar_nr_responses[3], // NR1
- ar_nr_responses[6], // AR2
- ar_nr_responses[7] // NR2
- );
+ // Collect AR/NR per keytype & sector
+ if ( (flags & FLAG_NR_AR_ATTACK) == 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 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
+ if (ar_nr_resp[ar_nr_collected[i+mM]].ar != ar) {
+ // Avoid duplicates... probably not necessary, ar should vary.
+ if (ar_nr_collected[i+mM]==0) {
+ // first nonce collect
+ ar_nr_resp[i+mM].cuid = cuid;
+ ar_nr_resp[i+mM].sector = cardAUTHSC;
+ ar_nr_resp[i+mM].keytype = cardAUTHKEY;
+ ar_nr_resp[i+mM].nonce = nonce;
+ ar_nr_resp[i+mM].nr = nr;
+ ar_nr_resp[i+mM].ar = ar;
+ nonce1_count++;
+ // 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;
+ ar_nr_resp[i+ATTACK_KEY_COUNT].nonce = nonce;
+ 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)
+ ar_nr_resp[i+mM].nonce2 = nonce;
+ ar_nr_resp[i+mM].nr2 = nr;
+ ar_nr_resp[i+mM].ar2 = ar;
+ if (!gettingMoebius) {
+ nonce2_count++;
+ // 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
+ // first finish incrementing last sample
+ ar_nr_collected[i+mM]++;
+ // switch to moebius collection
+ gettingMoebius = true;
+ mM = ATTACK_KEY_COUNT;
+ break;
+ }
+ } else {
+ moebius_n_count++;
+ // if we've collected all the nonces we need - finish.
+ if (nonce1_count == moebius_n_count) {
+ cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_resp,sizeof(ar_nr_resp));
+ nonce1_count = 0;
+ nonce2_count = 0;
+ moebius_n_count = 0;
+ gettingMoebius = false;
+ }
+ }
+ }
+ ar_nr_collected[i+mM]++;
+ }
+ }
+ // we found right spot for this nonce stop looking
+ break;
+ }
}
- uint8_t len = ar_nr_collected*5*4;
- cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,len,0,&ar_nr_responses,len);
- ar_nr_collected = 0;
- memset(ar_nr_responses, 0x00, len);
}
- }
+
} else if (receivedCmd[0] == MIFARE_ULC_AUTH_1 ) { // ULC authentication, or Desfire Authentication
} else if (receivedCmd[0] == MIFARE_ULEV1_AUTH) { // NTAG / EV-1 authentication
if ( tagType == 7 ) {
@@ -1268,6 +1324,11 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
// Count number of other messages after a halt
if(order != 6 && lastorder == 5) { happened2++; }
+ // comment this limit if you want to simulation longer
+ if (!tracing) {
+ Dbprintf("Trace Full. Simulation stopped.");
+ break;
+ }
// comment this limit if you want to simulation longer
if(cmdsRecvd > 999) {
DbpString("1000 commands later...");
@@ -1292,12 +1353,6 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
(LastTimeProxToAirStart + p_response->ProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG,
par);
}
-
- // comment this limit if you want to simulation longer
- if (!tracing) {
- Dbprintf("Trace Full. Simulation stopped.");
- break;
- }
}
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
@@ -1305,6 +1360,36 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
BigBuf_free_keep_EM();
LED_A_OFF();
+ 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<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);
+ Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",
+ ar_nr_resp[i].cuid, //UID
+ ar_nr_resp[i].nonce, //NT
+ ar_nr_resp[i].nr, //NR1
+ ar_nr_resp[i].ar, //AR1
+ ar_nr_resp[i].nr2, //NR2
+ ar_nr_resp[i].ar2 //AR2
+ );
+ }
+ }
+ for ( uint8_t i = ATTACK_KEY_COUNT; i < ATTACK_KEY_COUNT*2; 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<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);
+ Dbprintf("../tools/mfkey/mfkey32v2 %08x %08x %08x %08x %08x %08x %08x",
+ ar_nr_resp[i].cuid, //UID
+ ar_nr_resp[i].nonce, //NT
+ ar_nr_resp[i].nr, //NR1
+ ar_nr_resp[i].ar, //AR1
+ ar_nr_resp[i].nonce2,//NT2
+ ar_nr_resp[i].nr2, //NR2
+ ar_nr_resp[i].ar2 //AR2
+ );
+ }
+ }
+ }
+
if (MF_DBGLEVEL >= 4){
Dbprintf("-[ Wake ups after halt [%d]", happened);
Dbprintf("-[ Messages after halt [%d]", happened2);
@@ -1386,8 +1471,7 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing
//-----------------------------------------------------------------------------
// Prepare reader command (in bits, support short frames) to send to FPGA
//-----------------------------------------------------------------------------
-void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8_t *parity)
-{
+void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8_t *parity) {
int i, j;
int last = 0;
uint8_t b;
@@ -1560,7 +1644,7 @@ int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNeeded) {
b = AT91C_BASE_SSC->SSC_RHR; (void) b;
// wait for the FPGA to signal fdt_indicator == 1 (the FPGA is ready to queue new data in its delay line)
- for (uint16_t j = 0; j < 5; j++) { // allow timeout - better late than never
+ for (uint8_t j = 0; j < 5; j++) { // allow timeout - better late than never
while(!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY));
if (AT91C_BASE_SSC->SSC_RHR) break;
}
@@ -1704,14 +1788,12 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receive
}
void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t *timing) {
+
CodeIso14443aBitsAsReaderPar(frame, bits, par);
-
// Send command to tag
TransmitFor14443a(ToSend, ToSendMax, timing);
if(trigger) LED_A_ON();
- // Log reader command in trace buffer
- //LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, TRUE);
LogTrace(frame, nbytes(bits), (LastTimeProxToAirStart<<4) + DELAY_ARM2AIR_AS_READER, ((LastTimeProxToAirStart + LastProxToAirDuration)<<4) + DELAY_ARM2AIR_AS_READER, par, TRUE);
}
@@ -1720,17 +1802,17 @@ void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *tim
}
void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing) {
- // Generate parity and redirect
- uint8_t par[MAX_PARITY_SIZE] = {0x00};
- GetParity(frame, len/8, par);
- ReaderTransmitBitsPar(frame, len, par, timing);
+ // Generate parity and redirect
+ uint8_t par[MAX_PARITY_SIZE] = {0x00};
+ GetParity(frame, len/8, par);
+ ReaderTransmitBitsPar(frame, len, par, timing);
}
void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing) {
- // Generate parity and redirect
- uint8_t par[MAX_PARITY_SIZE] = {0x00};
- GetParity(frame, len, par);
- ReaderTransmitBitsPar(frame, len*8, par, timing);
+ // Generate parity and redirect
+ uint8_t par[MAX_PARITY_SIZE] = {0x00};
+ GetParity(frame, len, par);
+ ReaderTransmitBitsPar(frame, len*8, par, timing);
}
int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity) {
@@ -2065,10 +2147,8 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
uint32_t nttmp2 = nt2;
for (i = 1; i < (32768/8); ++i) {
- nttmp1 = prng_successor(nttmp1, 1);
- if (nttmp1 == nt2) return i;
- nttmp2 = prng_successor(nttmp2, 1);
- if (nttmp2 == nt1) return -i;
+ nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i;
+ nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -i;
nttmp1 = prng_successor(nttmp1, 1); if (nttmp1 == nt2) return i+1;
nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+1);
@@ -2095,9 +2175,9 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
// Cloning MiFare Classic Rail and Building Passes, Anywhere, Anytime"
// (article by Nicolas T. Courtois, 2009)
//-----------------------------------------------------------------------------
-void ReaderMifare(bool first_try, uint8_t block ) {
- //uint8_t mf_auth[] = { MIFARE_AUTH_KEYA,0x00,0xf5,0x7b };
- uint8_t mf_auth[] = { MIFARE_AUTH_KEYA, block, 0x00, 0x00 };
+void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
+
+ uint8_t mf_auth[] = { keytype, block, 0x00, 0x00 };
uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
uint8_t uid[10] = {0,0,0,0,0,0,0,0,0,0};
uint8_t par_list[8] = {0,0,0,0,0,0,0,0};
@@ -2120,7 +2200,7 @@ void ReaderMifare(bool first_try, uint8_t block ) {
uint16_t unexpected_random = 0;
uint16_t sync_tries = 0;
- // static variables here, is re-used in the next call?
+ // static variables here, is re-used in the next call
static uint32_t nt_attacked = 0;
static uint32_t sync_time = 0;
static uint32_t sync_cycles = 0;
@@ -2130,14 +2210,14 @@ void ReaderMifare(bool first_try, uint8_t block ) {
#define PRNG_SEQUENCE_LENGTH (1 << 16)
#define MAX_UNEXPECTED_RANDOM 4 // maximum number of unexpected (i.e. real) random numbers when trying to sync. Then give up.
#define MAX_SYNC_TRIES 32
- #define MAX_STRATEGY 3
-
+
+ AppendCrc14443a(mf_auth, 2);
+
BigBuf_free(); BigBuf_Clear_ext(false);
clear_trace();
set_tracing(TRUE);
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
- AppendCrc14443a(mf_auth, 2);
if (first_try) {
sync_time = GetCountSspClk() & 0xfffffff8;
@@ -2145,8 +2225,6 @@ void ReaderMifare(bool first_try, uint8_t block ) {
mf_nr_ar3 = 0;
nt_attacked = 0;
par_low = 0;
-
- Dbprintf("FIRST: sync_time - %08X", sync_time);
} else {
// we were unsuccessful on a previous call.
// Try another READER nonce (first 3 parity bits remain the same)
@@ -2328,7 +2406,7 @@ void ReaderMifare(bool first_try, uint8_t block ) {
mf_nr_ar[3] &= 0x1F;
- if (MF_DBGLEVEL >= 1) Dbprintf("\nNumber of sent auth requestes: %u", i);
+ if (MF_DBGLEVEL >= 4) Dbprintf("Number of sent auth requestes: %u", i);
uint8_t buf[28] = {0x00};
memset(buf, 0x00, sizeof(buf));
@@ -2381,10 +2459,10 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
uint8_t response[MAX_MIFARE_FRAME_SIZE] = {0x00};
uint8_t response_par[MAX_MIFARE_PARITY_SIZE] = {0x00};
- uint8_t atqa[] = {0x04, 0x00}; // Mifare classic 1k (4b UID)
- uint8_t sak_4[] = {0x08, 0x00, 0x00}; // Mifare Classic
- uint8_t sak_7[] = {0x08, 0x00, 0x00}; // CL2 - 7b uid
- uint8_t sak_10[] = {0x08, 0x00, 0x00}; // CL3 - 10b uid
+ uint8_t atqa[] = {0x04, 0x00}; // Mifare classic 1k
+ uint8_t sak_4[] = {0x0C, 0x00, 0x00}; // CL1 - 4b uid
+ uint8_t sak_7[] = {0x0C, 0x00, 0x00}; // CL2 - 7b uid
+ uint8_t sak_10[] = {0x0C, 0x00, 0x00}; // CL3 - 10b uid
//uint8_t sak[] = {0x09, 0x3f, 0xcc }; // Mifare Mini
uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};
@@ -2395,61 +2473,43 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
//uint8_t rAUTH_NT[] = {0x55, 0x41, 0x49, 0x92};// nonce from nested? why this?
uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};
- // Here, we collect CUID, NT, AR, NR, NT2, AR2, NR2
+ // Here, we collect CUID, NT, NR, AR, CUID2, NT2, NR2, AR2
// This can be used in a reader-only attack.
- uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0};
+ uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0,0,0};
uint8_t ar_nr_collected = 0;
// Authenticate response - nonce
uint32_t nonce = bytes_to_num(rAUTH_NT, 4);
+ ar_nr_responses[1] = nonce;
//-- Determine the UID
// Can be set from emulator memory or incoming data
// Length: 4,7,or 10 bytes
- if ( flags & FLAG_UID_IN_EMUL ) {
- emlGetMemBt(rUIDBCC1, 0, 4);
- _UID_LEN = 4;
- } else if (flags & FLAG_4B_UID_IN_DATA) {
+ if ( (flags & FLAG_UID_IN_EMUL) == FLAG_UID_IN_EMUL)
+ emlGetMemBt(datain, 0, 10); // load 10bytes from EMUL to the datain pointer. to be used below.
+
+ if ( (flags & FLAG_4B_UID_IN_DATA) == FLAG_4B_UID_IN_DATA) {
memcpy(rUIDBCC1, datain, 4);
_UID_LEN = 4;
- } else if (flags & FLAG_7B_UID_IN_DATA) {
+ } else if ( (flags & FLAG_7B_UID_IN_DATA) == FLAG_7B_UID_IN_DATA) {
memcpy(&rUIDBCC1[1], datain, 3);
memcpy( rUIDBCC2, datain+3, 4);
_UID_LEN = 7;
- } else if (flags & FLAG_10B_UID_IN_DATA) {
+ } else if ( (flags & FLAG_10B_UID_IN_DATA) == FLAG_10B_UID_IN_DATA) {
memcpy(&rUIDBCC1[1], datain, 3);
- memcpy(&rUIDBCC2[1], datain+3, 4);
- memcpy( rUIDBCC3, datain+7, 4);
+ memcpy(&rUIDBCC2[1], datain+3, 3);
+ memcpy( rUIDBCC3, datain+6, 4);
_UID_LEN = 10;
}
- /*
- * Save cuid to collected response array.
- * Set XOR BCC (fifth byte) and modify the ATQA for 4,7 or 10-byte UID
- atqa[] = 0x04, 0x00;
- sak = 0x08;
- if (flags & FLAG_7B_UID_IN_DATA) {
- atqa[0] |= 0x40;
- sak |= 0x04;
- } else {
- atqa[0] &= 0xBF;
- sak &= 0xFB;
-
- // Prepare the mandatory SAK (for 4 and 7 byte UID)
- uint8_t response3[3] = {sak, 0x00, 0x00};
- ComputeCrc14443(CRC_14443_A, response3, 1, &response3[1], &response3[2]);
- */
switch (_UID_LEN) {
case 4:
- atqa[0] &= 0xBF;
- sak_4[0] &= 0xFB;
- ComputeCrc14443(CRC_14443_A, sak_4, 1, &sak_4[1], &sak_4[2]);
-
+ sak_4[0] &= 0xFB;
// save CUID
ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC1, 4);
// BCC
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
- if (MF_DBGLEVEL >= 1) {
+ if (MF_DBGLEVEL >= 2) {
Dbprintf("4B UID: %02x%02x%02x%02x",
rUIDBCC1[0],
rUIDBCC1[1],
@@ -2460,19 +2520,16 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
break;
case 7:
atqa[0] |= 0x40;
- sak_7[0] |= 0x04;
- ComputeCrc14443(CRC_14443_A, sak_7, 1, &sak_7[1], &sak_7[2]);
-
+ sak_7[0] &= 0xFB;
// save CUID
- ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC2, 4);
-
- rUIDBCC1[0] = 0x88; // CascadeTag, CT
+ ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC2, 4);
+ // CascadeTag, CT
+ rUIDBCC1[0] = 0x88;
// BCC
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];
- if (MF_DBGLEVEL >= 1) {
+ if (MF_DBGLEVEL >= 2) {
Dbprintf("7B UID: %02x %02x %02x %02x %02x %02x %02x",
- //rUIDBCC1[0],
rUIDBCC1[1],
rUIDBCC1[2],
rUIDBCC1[3],
@@ -2484,27 +2541,23 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
}
break;
case 10:
- atqa[0] |= 0x40;
- sak_10[0] |= 0x04;
- ComputeCrc14443(CRC_14443_A, sak_10, 1, &sak_10[1], &sak_10[2]);
-
+ atqa[0] |= 0x80;
+ sak_10[0] &= 0xFB;
// save CUID
ar_nr_responses[0] = cuid = bytes_to_num(rUIDBCC3, 4);
- rUIDBCC1[0] = 0x88; // CascadeTag, CT
+ // CascadeTag, CT
+ rUIDBCC1[0] = 0x88;
+ rUIDBCC2[0] = 0x88;
// BCC
rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];
-
- rUIDBCC2[0] = 0x88; // CascadeTag, CT
- // BCC
rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];
rUIDBCC3[4] = rUIDBCC3[0] ^ rUIDBCC3[1] ^ rUIDBCC3[2] ^ rUIDBCC3[3];
- if (MF_DBGLEVEL >= 1) {
+
+ if (MF_DBGLEVEL >= 2) {
Dbprintf("10B UID: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
- //rUIDBCC1[0],
rUIDBCC1[1],
rUIDBCC1[2],
rUIDBCC1[3],
- //rUIDBCC2[0],
rUIDBCC2[1],
rUIDBCC2[2],
rUIDBCC2[3],
@@ -2518,7 +2571,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
default:
break;
}
-
+ // calc some crcs
+ ComputeCrc14443(CRC_14443_A, sak_4, 1, &sak_4[1], &sak_4[2]);
+ ComputeCrc14443(CRC_14443_A, sak_7, 1, &sak_7[1], &sak_7[2]);
+ ComputeCrc14443(CRC_14443_A, sak_10, 1, &sak_10[1], &sak_10[2]);
+
// We need to listen to the high-frequency, peak-detected path.
iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
@@ -2552,6 +2609,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
}
// REQ or WUP request in ANY state and WUP in HALTED state
+ // this if-statement doesn't match the specification above. (iceman)
if (len == 1 && ((receivedCmd[0] == ISO14443A_CMD_REQA && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == ISO14443A_CMD_WUPA)) {
selTimer = GetTickCount();
EmSendCmdEx(atqa, sizeof(atqa), (receivedCmd[0] == ISO14443A_CMD_WUPA));
@@ -2559,6 +2617,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
crypto1_destroy(pcs);
cardAUTHKEY = 0xff;
LEDsoff();
+ nonce++;
continue;
}
@@ -2626,9 +2685,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
continue;
default:break;
}
- } else {
- cardSTATE_TO_IDLE();
- }
+ }
+ cardSTATE_TO_IDLE();
break;
}
case MFEMUL_SELECT3:{
@@ -2650,9 +2708,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
LED_B_ON();
if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol3 time: %d", GetTickCount() - selTimer);
break;
- } else {
- cardSTATE_TO_IDLE();
}
+ cardSTATE_TO_IDLE();
break;
}
case MFEMUL_AUTH1:{
@@ -2662,23 +2719,22 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
break;
}
- uint32_t ar = bytes_to_num(receivedCmd, 4);
- uint32_t nr = bytes_to_num(&receivedCmd[4], 4);
+ uint32_t nr = bytes_to_num(receivedCmd, 4);
+ uint32_t ar = bytes_to_num(&receivedCmd[4], 4);
//Collect AR/NR
//if(ar_nr_collected < 2 && cardAUTHSC == 2){
- if(ar_nr_collected < 2) {
- if(ar_nr_responses[2] != ar) {
- // Avoid duplicates... probably not necessary, ar should vary.
- //ar_nr_responses[ar_nr_collected*5] = 0;
- //ar_nr_responses[ar_nr_collected*5+1] = 0;
- ar_nr_responses[ar_nr_collected*5+2] = nonce;
- ar_nr_responses[ar_nr_collected*5+3] = nr;
- ar_nr_responses[ar_nr_collected*5+4] = ar;
+ if(ar_nr_collected < 2) {
+ //if(ar_nr_responses[2] != nr) {
+ ar_nr_responses[ar_nr_collected*4] = cuid;
+ ar_nr_responses[ar_nr_collected*4+1] = nonce;
+ ar_nr_responses[ar_nr_collected*4+2] = nr;
+ ar_nr_responses[ar_nr_collected*4+3] = ar;
ar_nr_collected++;
- }
+ //}
+
// Interactive mode flag, means we need to send ACK
- finished = (flags & FLAG_INTERACTIVE && ar_nr_collected == 2);
+ finished = ( ((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE)&& ar_nr_collected == 2);
}
/*
crypto1_word(pcs, ar , 1);
@@ -2704,7 +2760,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
num_to_bytes(ans, 4, rAUTH_AT);
EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
LED_C_ON();
-
+
if (MF_DBGLEVEL >= 4) {
Dbprintf("AUTH COMPLETED for sector %d with key %c. time=%d",
cardAUTHSC,
@@ -2915,31 +2971,33 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
}
// Interactive mode flag, means we need to send ACK
- if(flags & FLAG_INTERACTIVE) {
+ if((flags & FLAG_INTERACTIVE) == FLAG_INTERACTIVE) {
//May just aswell send the collected ar_nr in the response aswell
- uint8_t len = ar_nr_collected*5*4;
+ uint8_t len = ar_nr_collected * 4 * 4;
cmd_send(CMD_ACK, CMD_SIMULATE_MIFARE_CARD, len, 0, &ar_nr_responses, len);
}
- if(flags & FLAG_NR_AR_ATTACK && MF_DBGLEVEL >= 1 ) {
+ if( ((flags & FLAG_NR_AR_ATTACK) == FLAG_NR_AR_ATTACK ) && MF_DBGLEVEL >= 1 ) {
if(ar_nr_collected > 1 ) {
Dbprintf("Collected two pairs of AR/NR which can be used to extract keys from reader:");
- Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",
+ Dbprintf("../tools/mfkey/mfkey32v2.exe %08x %08x %08x %08x %08x %08x %08x",
ar_nr_responses[0], // CUID
- ar_nr_responses[1], // NT
- ar_nr_responses[2], // AR1
- ar_nr_responses[3], // NR1
- ar_nr_responses[4], // AR2
- ar_nr_responses[5] // NR2
+ ar_nr_responses[1], // NT1
+ ar_nr_responses[2], // NR1
+ ar_nr_responses[3], // AR1
+ //ar_nr_responses[4], // CUID2
+ ar_nr_responses[5], // NT2
+ ar_nr_responses[6], // NR2
+ ar_nr_responses[7] // AR2
);
} else {
Dbprintf("Failed to obtain two AR/NR pairs!");
- if(ar_nr_collected > 0 ) {
- Dbprintf("Only got these: UID=%08x, nonce=%08x, AR1=%08x, NR1=%08x",
+ if(ar_nr_collected == 1 ) {
+ Dbprintf("Only got these: UID=%08x, nonce=%08x, NR1=%08x, AR1=%08x",
ar_nr_responses[0], // CUID
ar_nr_responses[1], // NT
- ar_nr_responses[2], // AR1
- ar_nr_responses[3] // NR1
+ ar_nr_responses[2], // NR1
+ ar_nr_responses[3] // AR1
);
}
}
@@ -2957,10 +3015,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
//
// if no activity for 2sec, it sends the collected data to the client.
//-----------------------------------------------------------------------------
+// "hf mf sniff"
void RAMFUNC SniffMifare(uint8_t param) {
- // param:
- // bit 0 - trigger from first card answer
- // bit 1 - trigger from first reader 7-bit request
+
LEDsoff();
// free eventually allocated BigBuf memory
@@ -2994,8 +3051,12 @@ void RAMFUNC SniffMifare(uint8_t param) {
// Set up the demodulator for the reader -> tag commands
UartInit(receivedCmd, receivedCmdPar);
- // set transfer address and number of bytes. Start transfer.
- FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);
+ // Setup and start DMA.
+ // set transfer address and number of bytes. Start transfer.
+ if ( !FpgaSetupSscDma((uint8_t*) dmaBuf, DMA_BUFFER_SIZE) ){
+ if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
+ return;
+ }
LED_D_OFF();
@@ -3022,7 +3083,11 @@ void RAMFUNC SniffMifare(uint8_t param) {
maxDataLen = 0;
ReaderIsActive = FALSE;
TagIsActive = FALSE;
- FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); // set transfer address and number of bytes. Start transfer.
+ // Setup and start DMA. set transfer address and number of bytes. Start transfer.
+ if ( !FpgaSetupSscDma((uint8_t*) dmaBuf, DMA_BUFFER_SIZE) ){
+ if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
+ return;
+ }
}
}
@@ -3097,10 +3162,11 @@ void RAMFUNC SniffMifare(uint8_t param) {
data = dmaBuf;
} // main cycle
-
+
+ if (MF_DBGLEVEL >= 1) Dbprintf("maxDataLen=%x, Uart.state=%x, Uart.len=%x", maxDataLen, Uart.state, Uart.len);
+
FpgaDisableSscDma();
MfSniffEnd();
- if (MF_DBGLEVEL >= 1) Dbprintf("maxDataLen=%x, Uart.state=%x, Uart.len=%x", maxDataLen, Uart.state, Uart.len);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LEDsoff();
set_tracing(FALSE);