X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f6c18637ca504d2eea0bc3accaabddd132d749fb..31b3689f0b54048de31957e001c60bbd8dfca5a3:/armsrc/mifaredesfire.c?ds=sidebyside diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c index 60c941eb..57376151 100644 --- a/armsrc/mifaredesfire.c +++ b/armsrc/mifaredesfire.c @@ -1,10 +1,12 @@ #include "mifaredesfire.h" +#include "des.h" #define MAX_APPLICATION_COUNT 28 #define MAX_FILE_COUNT 16 -#define MAX_FRAME_SIZE 60 +#define MAX_DESFIRE_FRAME_SIZE 60 #define NOT_YET_AUTHENTICATED 255 -#define FRAME_PAYLOAD_SIZE (MAX_FRAME_SIZE - 5) +#define FRAME_PAYLOAD_SIZE (MAX_DESFIRE_FRAME_SIZE - 5) +#define RECEIVE_SIZE 64 // the block number for the ISO14443-4 PCB uint8_t pcb_blocknum = 0; @@ -16,25 +18,20 @@ static uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4}; //static uint8_t __res[MAX_FRAME_SIZE]; bool InitDesfireCard(){ - - // Make sure it is off. -// FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); -// SpinDelay(300); - byte_t cardbuf[USB_CMD_DATA_SIZE]; - memset(cardbuf,0,sizeof(cardbuf)); + byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00}; + + iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; iso14a_set_tracing(TRUE); iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); - iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; int len = iso14443a_select_card(NULL,card,NULL); if (!len) { - if (MF_DBGLEVEL >= 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card"); - } - OnError(); + OnError(1); return false; } return true; @@ -58,7 +55,7 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ */ uint8_t flags = arg0; size_t datalen = arg1; - uint8_t resp[RECV_RES_SIZE]; + uint8_t resp[RECEIVE_SIZE]; memset(resp,0,sizeof(resp)); if (MF_DBGLEVEL >= 4) { @@ -77,12 +74,12 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ } int len = DesfireAPDU(datain, datalen, resp); - if (MF_DBGLEVEL >= 4) { - print_result("ERR <--: ", resp, len); - } + if (MF_DBGLEVEL >= 4) { + print_result("ERR <--: ", resp, len); + } if ( !len ) { - OnError(); + OnError(2); return; } @@ -99,13 +96,9 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ void MifareDesfireGetInformation(){ int len = 0; - uint8_t resp[USB_CMD_DATA_SIZE]; - uint8_t dataout[USB_CMD_DATA_SIZE]; - byte_t cardbuf[USB_CMD_DATA_SIZE]; - - memset(resp,0,sizeof(resp)); - memset(dataout,0, sizeof(dataout)); - memset(cardbuf,0,sizeof(cardbuf)); + uint8_t resp[USB_CMD_DATA_SIZE] = {0x00}; + uint8_t dataout[USB_CMD_DATA_SIZE] = {0x00}; + byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00}; /* 1 = PCB 1 @@ -123,11 +116,11 @@ void MifareDesfireGetInformation(){ // card select - information iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; byte_t isOK = iso14443a_select_card(NULL, card, NULL); - if (isOK != 1) { - if (MF_DBGLEVEL >= 1) { + if ( isOK == 0) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { Dbprintf("Can't select card"); } - OnError(); + OnError(1); return; } @@ -143,7 +136,7 @@ void MifareDesfireGetInformation(){ len = DesfireAPDU(cmd, cmd_len, resp); if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } @@ -156,7 +149,7 @@ void MifareDesfireGetInformation(){ len = DesfireAPDU(cmd, cmd_len, resp); if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } @@ -168,7 +161,7 @@ void MifareDesfireGetInformation(){ len = DesfireAPDU(cmd, cmd_len, resp); if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } @@ -186,12 +179,11 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain int len = 0; //uint8_t PICC_MASTER_KEY8[8] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47}; uint8_t PICC_MASTER_KEY16[16] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f }; - //uint8_t null_key_data8[8] = {0x00}; + uint8_t null_key_data8[8] = {0x00}; //uint8_t null_key_data16[16] = {0x00}; //uint8_t new_key_data8[8] = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77}; //uint8_t new_key_data16[16] = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF}; - //uint8_t* bigbuffer = mifare_get_bigbufptr(); uint8_t resp[256] = {0x00}; uint8_t IV[16] = {0x00}; @@ -205,10 +197,6 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain uint8_t encBoth[32] = {0x00}; InitDesfireCard(); - - LED_A_ON(); - LED_B_OFF(); - LED_C_OFF(); // 3 olika sätt att authenticera. AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32) // 4 olika crypto algo DES, 3DES, 3K3DES, AES @@ -216,10 +204,148 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain // des, nyckel 0, switch (mode){ - case 1: - // if ( SendDesfireCommand(AUTHENTICATE, &keyno, resp) > 0 ){ - // // fick nonce från kortet - // } + case 1:{ + if (algo == 1) { + + uint8_t keybytes[8] = {0x00}; + uint8_t RndA[8] = {0x00}; + uint8_t RndB[8] = {0x00}; + + if (datain[1] == 0xff){ + memcpy(keybytes,null_key_data8,8); + } else{ + memcpy(keybytes, datain+1, datalen); + } + + struct desfire_key defaultkey = {0}; + desfirekey_t key = &defaultkey; + Desfire_des_key_new(keybytes, key); + + cmd[0] = AUTHENTICATE; + cmd[1] = keyno; //keynumber + len = DesfireAPDU(cmd, 2, resp); + if ( !len ) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { + DbpString("Authentication failed. Card timeout."); + } + OnError(3); + return; + } + + if ( resp[2] == 0xaf ){ + } else { + DbpString("Authetication failed. Invalid key number."); + OnError(3); + return; + } + + memcpy( encRndB, resp+3, 8); + + des_dec(&decRndB, &encRndB, key->data); + memcpy(RndB, decRndB, 8); + rol(decRndB,8); + + // This should be random + uint8_t decRndA[8] = {0x00}; + memcpy(RndA, decRndA, 8); + uint8_t encRndA[8] = {0x00}; + + des_dec(&encRndA, &decRndA, key->data); + + memcpy(both, encRndA, 8); + + for (int x = 0; x < 8; x++) { + decRndB[x] = decRndB[x] ^ encRndA[x]; + } + + des_dec(&encRndB, &decRndB, key->data); + + memcpy(both + 8, encRndB, 8); + + cmd[0] = ADDITIONAL_FRAME; + memcpy(cmd+1, both, 16 ); + + len = DesfireAPDU(cmd, 17, resp); + if ( !len ) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { + DbpString("Authentication failed. Card timeout."); + } + OnError(3); + return; + } + + if ( resp[2] == 0x00 ){ + + struct desfire_key sessionKey = {0}; + desfirekey_t skey = &sessionKey; + Desfire_session_key_new( RndA, RndB , key, skey ); + //print_result("SESSION : ", skey->data, 8); + + memcpy(encRndA, resp+3, 8); + des_dec(&encRndA, &encRndA, key->data); + rol(decRndA,8); + for (int x = 0; x < 8; x++) { + if (decRndA[x] != encRndA[x]) { + DbpString("Authetication failed. Cannot varify PICC."); + OnError(4); + return; + } + } + + //Change the selected key to a new value. + /* + + cmd[0] = CHANGE_KEY; + cmd[1] = keyno; + + uint8_t newKey[16] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77}; + + uint8_t first, second; + uint8_t buff1[8] = {0x00}; + uint8_t buff2[8] = {0x00}; + uint8_t buff3[8] = {0x00}; + + memcpy(buff1,newKey, 8); + memcpy(buff2,newKey + 8, 8); + + ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second); + memcpy(buff3, &first, 1); + memcpy(buff3 + 1, &second, 1); + + des_dec(&buff1, &buff1, skey->data); + memcpy(cmd+2,buff1,8); + + for (int x = 0; x < 8; x++) { + buff2[x] = buff2[x] ^ buff1[x]; + } + des_dec(&buff2, &buff2, skey->data); + memcpy(cmd+10,buff2,8); + + for (int x = 0; x < 8; x++) { + buff3[x] = buff3[x] ^ buff2[x]; + } + des_dec(&buff3, &buff3, skey->data); + memcpy(cmd+18,buff3,8); + + // The command always times out on the first attempt, this will retry until a response + // is recieved. + len = 0; + while(!len) { + len = DesfireAPDU(cmd,26,resp); + } + */ + + OnSuccess(); + cmd_send(CMD_ACK,1,0,0,skey->data,8); + + } else { + DbpString("Authetication failed."); + OnError(6); + return; + } + + } + } break; case 2: //SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp); @@ -227,14 +353,14 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain case 3:{ //defaultkey - uint8_t keybytes[16]; + uint8_t keybytes[16] = {0x00}; if (datain[1] == 0xff){ memcpy(keybytes,PICC_MASTER_KEY16,16); } else{ memcpy(keybytes, datain+1, datalen); } - struct desfire_key defaultkey = {0}; + struct desfire_key defaultkey = {0x00}; desfirekey_t key = &defaultkey; Desfire_aes_key_new( keybytes, key); @@ -243,7 +369,7 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain if( MF_DBGLEVEL >= 4) { Dbprintf("AES context failed to init"); } - OnError(); + OnError(7); return; } @@ -251,10 +377,10 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain cmd[1] = 0x00; //keynumber len = DesfireAPDU(cmd, 2, resp); if ( !len ) { - if (MF_DBGLEVEL >= 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { DbpString("Authentication failed. Card timeout."); } - OnError(); + OnError(3); return; } @@ -272,10 +398,10 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain len = DesfireAPDU(cmd, 33, resp); // 1 + 32 == 33 if ( !len ) { - if (MF_DBGLEVEL >= 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { DbpString("Authentication failed. Card timeout."); } - OnError(); + OnError(3); return; } @@ -287,10 +413,9 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain print_result("SESSION : ", skey->data, 16); } else { DbpString("Authetication failed."); - OnError(); + OnError(7); return; } - break; } } @@ -305,10 +430,13 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain // dataout = pointer to response data array int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ - uint32_t status = 0; + size_t len = 0; size_t wrappedLen = 0; uint8_t wCmd[USB_CMD_DATA_SIZE] = {0}; + uint8_t *resp = ((uint8_t *)BigBuf) + RECV_RESP_OFFSET; + uint8_t *resp_par = ((uint8_t *)BigBuf) + RECV_RESP_PAR_OFFSET; + wrappedLen = CreateAPDU( cmd, cmd_len, wCmd); if (MF_DBGLEVEL >= 4) { @@ -316,9 +444,9 @@ int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ } ReaderTransmit( wCmd, wrappedLen, NULL); - status = ReaderReceive(dataout); + len = ReaderReceive(resp, resp_par); - if( status == 0x00){ + if( len == 0x00 ){ if (MF_DBGLEVEL >= 4) { Dbprintf("fukked"); } @@ -326,14 +454,16 @@ int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ } // if we received an I- or R(ACK)-Block with a block number equal to the // current block number, toggle the current block number - else if (status >= 4 // PCB+CID+CRC = 4 bytes - && ((dataout[0] & 0xC0) == 0 // I-Block - || (dataout[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0 - && (dataout[0] & 0x01) == pcb_blocknum) // equal block numbers + else if (len >= 4 // PCB+CID+CRC = 4 bytes + && ((resp[0] & 0xC0) == 0 // I-Block + || (resp[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0 + && (resp[0] & 0x01) == pcb_blocknum) // equal block numbers { pcb_blocknum ^= 1; //toggle next block } - return status; + + memcpy(dataout, resp, len); + return len; } // CreateAPDU @@ -346,7 +476,7 @@ size_t CreateAPDU( uint8_t *datain, size_t len, uint8_t *dataout){ cmd[0] = 0x0A; // 0x0A = skicka cid, 0x02 = ingen cid. Särskilda bitar // cmd[0] |= pcb_blocknum; // OR the block number into the PCB - cmd[1] = 0x00; // CID: 0x00 //FIXME: allow multiple selected cards + cmd[1] = 0x00; // CID: 0x00 //TODO: allow multiple selected cards memcpy(cmd+2, datain, len); AppendCrc14443a(cmd, len+2); @@ -368,10 +498,10 @@ void OnSuccess(){ LEDsoff(); } -void OnError(){ +void OnError(uint8_t reason){ pcb_blocknum = 0; ReaderTransmit(deselect_cmd, 3 , NULL); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - cmd_send(CMD_ACK,0,0,0,0,0); + cmd_send(CMD_ACK,0,reason,0,0,0); LEDsoff(); }