]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/iso14443a.c
ADD: added the possibility to choose which block num to attack with "hf mf mifare...
[proxmark3-svn] / armsrc / iso14443a.c
index 8a925475e1869356120ed7949a20708601f6c3f7..1c4d0f05f35129c994deb0c178d1161ca887b4a3 100644 (file)
@@ -1211,10 +1211,7 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data)
                        //p_response = &responses[9];                           
                
                } 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
                                        
@@ -1236,9 +1233,7 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data)
                                p_response = &responses[6]; order = 70;
                        }
                } 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 nonce = bytes_to_num(response5,4);
                        uint32_t nr = bytes_to_num(receivedCmd,4);
                        uint32_t ar = bytes_to_num(receivedCmd+4,4);
@@ -1352,9 +1347,7 @@ void SimulateIso14443aTag(int tagType, int flags, 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);
                                        // Do not respond
@@ -1372,9 +1365,7 @@ void SimulateIso14443aTag(int tagType, int flags, 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;
                                }
                                p_response = &dynamic_response_info;
@@ -1396,7 +1387,7 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data)
                if (p_response != NULL) {
                        EmSendCmd14443aRaw(p_response->modulation, p_response->modulation_n, receivedCmd[0] == 0x52);
                        // do the tracing for the previous reader request and this tag answer:
-                       uint8_t par[MAX_PARITY_SIZE];
+                       uint8_t par[MAX_PARITY_SIZE] = {0x00};
                        GetParity(p_response->response, p_response->response_n, par);
        
                        EmLogTrace(Uart.output, 
@@ -1781,24 +1772,20 @@ int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par){
 bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint8_t *reader_Parity,
                                 uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint8_t *tag_Parity)
 {
-       if (tracing) {
-               // we cannot exactly measure the end and start of a received command from reader. However we know that the delay from
-               // end of the received command to start of the tag's (simulated by us) answer is n*128+20 or n*128+84 resp.
-               // with n >= 9. The start of the tags answer can be measured and therefore the end of the received command be calculated:
-               uint16_t reader_modlen = reader_EndTime - reader_StartTime;
-               uint16_t approx_fdt = tag_StartTime - reader_EndTime;
-               uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20;
-               reader_EndTime = tag_StartTime - exact_fdt;
-               reader_StartTime = reader_EndTime - reader_modlen;
+       // we cannot exactly measure the end and start of a received command from reader. However we know that the delay from
+       // end of the received command to start of the tag's (simulated by us) answer is n*128+20 or n*128+84 resp.
+       // with n >= 9. The start of the tags answer can be measured and therefore the end of the received command be calculated:
+       uint16_t reader_modlen = reader_EndTime - reader_StartTime;
+       uint16_t approx_fdt = tag_StartTime - reader_EndTime;
+       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));
-               
-       } else {
-               return TRUE;
-       }
+       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));
+
 }
 
 //-----------------------------------------------------------------------------
@@ -1847,8 +1834,7 @@ void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t
                LED_A_ON();
   
        // 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);
 }
 
 void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *timing)
@@ -1877,9 +1863,7 @@ int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parit
        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;
 }
 
@@ -1888,9 +1872,7 @@ int ReaderReceive(uint8_t *receivedAnswer, uint8_t *parity)
        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;
 }
 
@@ -2006,7 +1988,7 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
                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
@@ -2081,7 +2063,7 @@ void iso14443a_setup(uint8_t fpga_minor_mode) {
 }
 
 int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
-       uint8_t parity[MAX_PARITY_SIZE];
+       uint8_t parity[MAX_PARITY_SIZE] = {0x00};
        uint8_t real_cmd[cmd_len+4];
        real_cmd[0] = 0x0a; //I-Block
        // put block number into the PCB
@@ -2120,20 +2102,19 @@ void ReaderIso14443a(UsbCommand *c)
        size_t lenbits = c->arg[1] >> 16;
        uint32_t timeout = c->arg[2];
        uint32_t arg0 = 0;
-       byte_t buf[USB_CMD_DATA_SIZE];
-       uint8_t par[MAX_PARITY_SIZE];
+       byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
+       uint8_t par[MAX_PARITY_SIZE] = {0x00};
   
-       if(param & ISO14A_CONNECT) {
+       if (param & ISO14A_CONNECT)
                clear_trace();
-       }
 
        set_tracing(TRUE);
 
-       if(param & ISO14A_REQUEST_TRIGGER) {
+       if (param & ISO14A_REQUEST_TRIGGER)
                iso14a_set_trigger(TRUE);
-       }
 
-       if(param & ISO14A_CONNECT) {
+
+       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;
@@ -2142,16 +2123,15 @@ void ReaderIso14443a(UsbCommand *c)
                }
        }
 
-       if(param & ISO14A_SET_TIMEOUT) {
+       if (param & ISO14A_SET_TIMEOUT)
                iso14a_set_timeout(timeout);
-       }
 
-       if(param & ISO14A_APDU) {
+       if (param & ISO14A_APDU) {
                arg0 = iso14_apdu(cmd, len, buf);
                cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
        }
 
-       if(param & ISO14A_RAW) {
+       if (param & ISO14A_RAW) {
                if(param & ISO14A_APPEND_CRC) {
                        if(param & ISO14A_TOPAZMODE) {
                                AppendCrc14443b(cmd,len);
@@ -2190,13 +2170,12 @@ void ReaderIso14443a(UsbCommand *c)
                cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
        }
 
-       if(param & ISO14A_REQUEST_TRIGGER) {
+       if (param & ISO14A_REQUEST_TRIGGER)
                iso14a_set_trigger(FALSE);
-       }
 
-       if(param & ISO14A_NO_DISCONNECT) {
+
+       if (param & ISO14A_NO_DISCONNECT)
                return;
-       }
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        set_tracing(FALSE);
@@ -2209,20 +2188,19 @@ void ReaderIso14443a(UsbCommand *c)
 // Therefore try in alternating directions.
 int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
 
-       uint16_t i;
-       uint32_t nttmp1, nttmp2;
-
        if (nt1 == nt2) return 0;
-
-       nttmp1 = nt1;
-       nttmp2 = nt2;
        
-       for (i = 1; i < 0xFFFF; i++) {
+       uint16_t i;
+       uint32_t nttmp1 = nt1;
+       uint32_t nttmp2 = nt2;
+       
+       for (i = 1; i < 0xFFFF; ++i) {
                nttmp1 = prng_successor(nttmp1, 1);
                if (nttmp1 == nt2) return i;
+
                nttmp2 = prng_successor(nttmp2, 1);
-                       if (nttmp2 == nt1) return -i;
-               }
+               if (nttmp2 == nt1) return -i;
+       }
        
        return(-99999); // either nt1 or nt2 are invalid nonces
 }
@@ -2234,13 +2212,18 @@ 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)
+void ReaderMifare(bool first_try, uint8_t block )
 {
        // Mifare AUTH
-       uint8_t mf_auth[]    = { 0x60,0x00,0xf5,0x7b };
+       //uint8_t mf_auth[]    = { 0x60,0x00,0xf5,0x7b };
+       //uint8_t mf_auth[]    = { 0x60,0x05, 0x58, 0x2c };
+       uint8_t mf_auth[]    = { 0x60,0x00, 0x00, 0x00 };
        uint8_t mf_nr_ar[]   = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
        static uint8_t mf_nr_ar3;
 
+       mf_auth[1] = block;
+       AppendCrc14443a(mf_auth, 2);
+       
        uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
        uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 
@@ -3006,15 +2989,14 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        LEDsoff();
 
-       if(flags & FLAG_INTERACTIVE)// Interactive mode flag, means we need to send ACK
-       {
+       // Interactive mode flag, means we need to send ACK
+       if(flags & FLAG_INTERACTIVE) {
                //May just aswell send the collected ar_nr in the response aswell
                uint8_t len = ar_nr_collected*5*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 && 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 %06x%08x %08x %08x %08x %08x %08x",
@@ -3063,9 +3045,8 @@ void RAMFUNC SniffMifare(uint8_t param) {
        // param:
        // bit 0 - trigger from first card answer
        // bit 1 - trigger from first reader 7-bit request
-
-       // C(red) A(yellow) B(green)
        LEDsoff();
+
        // init trace buffer
        clear_trace();
        set_tracing(TRUE);
@@ -3073,8 +3054,9 @@ void RAMFUNC SniffMifare(uint8_t param) {
        // The command (reader -> tag) that we're receiving.
        // The length of a received command will in most cases be no more than 18 bytes.
        // So 32 should be enough!
-       uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE] = {0x00};
+       uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE] = {0x00};    
        uint8_t receivedCmdPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
+
        // The response (tag -> reader) that we're receiving.
        uint8_t receivedResponse[MAX_MIFARE_FRAME_SIZE] = {0x00};
        uint8_t receivedResponsePar[MAX_MIFARE_PARITY_SIZE] = {0x00};
@@ -3083,6 +3065,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
 
        // free eventually allocated BigBuf memory
        BigBuf_free();
+       
        // allocate the DMA buffer, used to stream samples from the FPGA
        uint8_t *dmaBuf = BigBuf_malloc(DMA_BUFFER_SIZE);
        uint8_t *data = dmaBuf;
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