X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f89c705002842291e39d000f27dbaea1ddd78917..31b6e9af2beb26d7e78ab5f085f79fbb350e8f90:/armsrc/mifareutil.c?ds=inline diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c index 1f8a4d17..c5843fd7 100644 --- a/armsrc/mifareutil.c +++ b/armsrc/mifareutil.c @@ -1,12 +1,12 @@ //----------------------------------------------------------------------------- // Merlok, May 2011 -// Many authors, that makes it possible +// Many authors, whom made it possible // // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// code for work with mifare cards. +// Work with mifare cards. //----------------------------------------------------------------------------- #include "proxmark3.h" @@ -19,10 +19,64 @@ #include "crapto1.h" #include "mifareutil.h" +int MF_DBGLEVEL = MF_DBG_ALL; + +// memory management uint8_t* mifare_get_bigbufptr(void) { - return (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes + return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET); // was 3560 - tied to other size changes +} +uint8_t* eml_get_bigbufptr_sendbuf(void) { + return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); +} +uint8_t* eml_get_bigbufptr_recbuf(void) { + return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET); +} +uint8_t* eml_get_bigbufptr_cardmem(void) { + return (((uint8_t *)BigBuf) + CARD_MEMORY); +} + +// crypto1 helpers +void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){ + uint8_t bt = 0; + int i; + + if (len != 1) { + for (i = 0; i < len; i++) + data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i]; + } else { + bt = 0; + for (i = 0; i < 4; i++) + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i; + + data[0] = bt; + } + return; } +void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, int len, uint32_t *par) { + uint8_t bt = 0; + int i; + uint32_t mltpl = 1 << (len - 1); // for len=18 it=0x20000 + *par = 0; + for (i = 0; i < len; i++) { + bt = data[i]; + data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i]; + *par = (*par >> 1) | ( ((filter(pcs->odd) ^ oddparity(bt)) & 0x01) * mltpl ); + } + return; +} + +uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) { + uint8_t bt = 0; + int i; + + for (i = 0; i < 4; i++) + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i; + + return bt; +} + +// send commands int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer) { return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, NULL); @@ -76,6 +130,7 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm return len; } +// mifare commands int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested) { return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL); @@ -96,7 +151,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN // Transmit MIFARE_CLASSIC_AUTH len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer); -// Dbprintf("rand nonce len: %x", len); + if (MF_DBGLEVEL >= 4) Dbprintf("rand nonce len: %x", len); if (len != 4) return 1; ar[0] = 0x55; @@ -123,7 +178,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN } // some statistic - if (!ntptr) + if (!ntptr && (MF_DBGLEVEL >= 3)) Dbprintf("auth uid: %08x nt: %08x", uid, nt); // save Nt @@ -156,7 +211,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN len = ReaderReceive(receivedAnswer); if (!len) { - Dbprintf("Authentication failed. Card timeout."); + if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout."); return 2; } @@ -164,7 +219,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0); if (ntpp != bytes_to_num(tmp4, 4)) { - Dbprintf("Authentication failed. Error card response."); + if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response."); return 3; } @@ -182,18 +237,18 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo // command MIFARE_CLASSIC_READBLOCK len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer); if (len == 1) { - Dbprintf("Cmd Error: %02x", receivedAnswer[0]); + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); return 1; } if (len != 18) { - Dbprintf("Cmd Error: card timeout. len: %x", len); + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len); return 2; } memcpy(bt, receivedAnswer + 16, 2); AppendCrc14443a(receivedAnswer, 16); if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) { - Dbprintf("Cmd CRC response error."); + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error."); return 3; } @@ -216,7 +271,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer); if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK - Dbprintf("Cmd Error: %02x", receivedAnswer[0]); + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); return 1; } @@ -241,7 +296,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i; if ((len != 1) || (res != 0x0A)) { - Dbprintf("Cmd send data2 Error: %02x", res); + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); return 2; } @@ -258,9 +313,101 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) len = mifare_sendcmd_short(pcs, 1, 0x50, 0x00, receivedAnswer); if (len != 0) { - Dbprintf("halt error. response len: %x", len); + if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len); return 1; } return 0; } + +// work with emulator memory +void emlSetMem(uint8_t *data, int blockNum, int blocksCount) { + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + + memcpy(emCARD + blockNum * 16, data, blocksCount * 16); +} + +void emlGetMem(uint8_t *data, int blockNum, int blocksCount) { + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + + memcpy(data, emCARD + blockNum * 16, blocksCount * 16); +} + +void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) { + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + + memcpy(data, emCARD + bytePtr, byteCount); +} + +int emlCheckValBl(int blockNum) { + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* data = emCARD + blockNum * 16; + + if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) || + (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) || + (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) || + (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) || + (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) || + (data[12] != (data[15] ^ 0xff)) + ) + return 1; + return 0; +} + +int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) { + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* data = emCARD + blockNum * 16; + + if (emlCheckValBl(blockNum)) { + return 1; + } + + memcpy(blReg, data, 4); + *blBlock = data[12]; + + return 0; +} + +int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) { + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* data = emCARD + blockNum * 16; + + memcpy(data + 0, &blReg, 4); + memcpy(data + 8, &blReg, 4); + blReg = blReg ^ 0xffffffff; + memcpy(data + 4, &blReg, 4); + + data[12] = blBlock; + data[13] = blBlock ^ 0xff; + data[14] = blBlock; + data[15] = blBlock ^ 0xff; + + return 0; +} + +uint64_t emlGetKey(int sectorNum, int keyType) { + uint8_t key[6]; + uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + + memcpy(key, emCARD + 3 * 16 + sectorNum * 4 * 16 + keyType * 10, 6); + return bytes_to_num(key, 6); +} + +void emlClearMem(void) { + int i; + + const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + const uint8_t empty[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04}; + // fill sectors data + for(i = 0; i < 16; i++) { + emlSetMem((uint8_t *)empty, i * 4 + 0, 1); + emlSetMem((uint8_t *)empty, i * 4 + 1, 1); + emlSetMem((uint8_t *)empty, i * 4 + 2, 1); + emlSetMem((uint8_t *)trailer, i * 4 + 3, 1); + } + + // uid + emlSetMem((uint8_t *)uid, 0, 1); + return; +}