mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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626 lines
17 KiB
C
626 lines
17 KiB
C
//-----------------------------------------------------------------------------
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// Merlok, May 2011, 2012
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// Many authors, whom made it possible
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Work with mifare cards.
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//-----------------------------------------------------------------------------
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#include "../include/proxmark3.h"
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#include "apps.h"
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#include "util.h"
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#include "string.h"
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#include "../common/iso14443crc.h"
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#include "iso14443a.h"
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#include "crapto1.h"
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#include "mifareutil.h"
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int MF_DBGLEVEL = MF_DBG_ALL;
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// memory management
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uint8_t* mifare_get_bigbufptr(void) {
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return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET); // was 3560 - tied to other size changes
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}
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uint8_t* eml_get_bigbufptr_sendbuf(void) {
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return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
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}
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uint8_t* eml_get_bigbufptr_recbuf(void) {
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return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET);
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}
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uint8_t* eml_get_bigbufptr_cardmem(void) {
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return (((uint8_t *)BigBuf) + CARD_MEMORY);
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}
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// crypto1 helpers
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void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
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uint8_t bt = 0;
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int i;
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if (len != 1) {
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for (i = 0; i < len; i++)
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data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
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} else {
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bt = 0;
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for (i = 0; i < 4; i++)
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
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data[0] = bt;
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}
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return;
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}
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void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, int len, uint32_t *par) {
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uint8_t bt = 0;
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int i;
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uint32_t mltpl = 1 << (len - 1); // for len=18 it=0x20000
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*par = 0;
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for (i = 0; i < len; i++) {
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bt = data[i];
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data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
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*par = (*par >> 1) | ( ((filter(pcs->odd) ^ oddparity(bt)) & 0x01) * mltpl );
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}
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return;
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}
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uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
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uint8_t bt = 0;
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int i;
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for (i = 0; i < 4; i++)
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
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return bt;
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}
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// send commands
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int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t *timing)
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{
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return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, NULL, timing);
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}
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int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *timing)
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{
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uint8_t dcmd[8];
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dcmd[0] = cmd;
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memcpy(dcmd+1,data,5);
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AppendCrc14443a(dcmd, 6);
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ReaderTransmit(dcmd, sizeof(dcmd), NULL);
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int len = ReaderReceive(answer);
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if(!len) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
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return 2;
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}
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return len;
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}
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int mifare_sendcmd_short_mfucauth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint32_t *timing)
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{
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uint8_t dcmd[19];
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int len;
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dcmd[0] = cmd;
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memcpy(dcmd+1,data,16);
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AppendCrc14443a(dcmd, 17);
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ReaderTransmit(dcmd, sizeof(dcmd), timing);
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len = ReaderReceive(answer);
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if(!len) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
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len = ReaderReceive(answer);
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}
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if(len==1) {
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if (MF_DBGLEVEL >= 1) Dbprintf("NAK - Authentication failed.");
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return 1;
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}
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return len;
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}
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int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t * parptr, uint32_t *timing)
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{
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uint8_t dcmd[4], ecmd[4];
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uint32_t pos, par, res;
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dcmd[0] = cmd;
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dcmd[1] = data;
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AppendCrc14443a(dcmd, 2);
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memcpy(ecmd, dcmd, sizeof(dcmd));
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if (crypted) {
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par = 0;
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for (pos = 0; pos < 4; pos++)
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{
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ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
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par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) * 0x08 );
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}
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ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
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} else {
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ReaderTransmit(dcmd, sizeof(dcmd), timing);
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}
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int len = ReaderReceivePar(answer, &par);
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if (parptr) *parptr = par;
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if (crypted == CRYPT_ALL) {
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if (len == 1) {
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res = 0;
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for (pos = 0; pos < 4; pos++)
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res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
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answer[0] = res;
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} else {
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for (pos = 0; pos < len; pos++)
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{
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answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
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}
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}
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}
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return len;
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}
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// mifare commands
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int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested)
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{
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return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
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}
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int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested, uint32_t * ntptr, uint32_t *timing)
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{
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// variables
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int len;
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uint32_t pos;
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uint8_t tmp4[4];
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byte_t par = 0;
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byte_t ar[4];
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uint32_t nt, ntpp; // Supplied tag nonce
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uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// Transmit MIFARE_CLASSIC_AUTH
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len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, timing);
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if (MF_DBGLEVEL >= 4) Dbprintf("rand nonce len: %x", len);
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if (len != 4) return 1;
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ar[0] = 0x55;
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ar[1] = 0x41;
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ar[2] = 0x49;
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ar[3] = 0x92;
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// Save the tag nonce (nt)
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nt = bytes_to_num(receivedAnswer, 4);
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// ----------------------------- crypto1 create
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if (isNested)
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crypto1_destroy(pcs);
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// Init cipher with key
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crypto1_create(pcs, ui64Key);
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if (isNested == AUTH_NESTED) {
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// decrypt nt with help of new key
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nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
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} else {
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// Load (plain) uid^nt into the cipher
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crypto1_word(pcs, nt ^ uid, 0);
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}
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// some statistic
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if (!ntptr && (MF_DBGLEVEL >= 3))
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Dbprintf("auth uid: %08x nt: %08x", uid, nt);
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// save Nt
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if (ntptr)
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*ntptr = nt;
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par = 0;
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// Generate (encrypted) nr+parity by loading it into the cipher (Nr)
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for (pos = 0; pos < 4; pos++)
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{
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mf_nr_ar[pos] = crypto1_byte(pcs, ar[pos], 0) ^ ar[pos];
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par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(ar[pos])) & 0x01) * 0x80 );
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}
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// Skip 32 bits in pseudo random generator
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nt = prng_successor(nt,32);
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// ar+parity
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for (pos = 4; pos < 8; pos++)
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{
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nt = prng_successor(nt,8);
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mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
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par = (par >> 1)| ( ((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) * 0x80 );
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}
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// Transmit reader nonce and reader answer
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ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
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// Receive 4 bit answer
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len = ReaderReceive(receivedAnswer);
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if (!len)
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{
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if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
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return 2;
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}
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memcpy(tmp4, receivedAnswer, 4);
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ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
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if (ntpp != bytes_to_num(tmp4, 4)) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");
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return 3;
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}
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return 0;
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}
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int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
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{
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// variables
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int len;
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uint8_t bt[2];
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_READBLOCK
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len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, NULL);
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if (len == 1) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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if (len != 18) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
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return 2;
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}
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memcpy(bt, receivedAnswer + 16, 2);
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AppendCrc14443a(receivedAnswer, 16);
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if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
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return 3;
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}
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memcpy(blockData, receivedAnswer, 16);
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return 0;
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}
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int mifare_ultra_auth1(uint32_t uid, uint8_t *blockData){
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// variables
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int len;
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_READBLOCK
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len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,NULL);
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if (len == 1) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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if (len == 11) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
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receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
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receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
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receivedAnswer[10]);
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memcpy(blockData, receivedAnswer, 11);
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return 0;
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}
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//else something went wrong???
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return 1;
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}
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int mifare_ultra_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
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// variables
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int len;
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_READBLOCK
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len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, key, receivedAnswer,NULL);
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if (len == 1) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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if (len == 11){
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if (MF_DBGLEVEL >= 1) Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
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receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
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receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
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receivedAnswer[10]);
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memcpy(blockData, receivedAnswer, 11);
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return 0;
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}
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//something went wrong?
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return 1;
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}
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int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
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{
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// variables
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int len;
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uint8_t bt[2];
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_READBLOCK
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len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer,NULL);
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if (len == 1) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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if (len != 18) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
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return 2;
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}
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memcpy(bt, receivedAnswer + 16, 2);
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AppendCrc14443a(receivedAnswer, 16);
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if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
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return 3;
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}
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memcpy(blockData, receivedAnswer, 14);
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return 0;
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}
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int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
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{
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// variables
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int len, i;
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uint32_t pos;
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uint32_t par = 0;
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byte_t res;
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uint8_t d_block[18], d_block_enc[18];
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_WRITEBLOCK
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len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, NULL);
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if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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memcpy(d_block, blockData, 16);
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AppendCrc14443a(d_block, 16);
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// crypto
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par = 0;
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for (pos = 0; pos < 18; pos++)
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{
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d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
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par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) * 0x20000 );
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}
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ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
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// Receive the response
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len = ReaderReceive(receivedAnswer);
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res = 0;
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for (i = 0; i < 4; i++)
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res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
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if ((len != 1) || (res != 0x0A)) {
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res);
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return 2;
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}
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return 0;
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}
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int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
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{
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// variables
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int len;
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uint32_t par = 0;
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uint8_t d_block[18];
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_WRITEBLOCK
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len = mifare_sendcmd_short(NULL, 1, 0xA0, blockNo, receivedAnswer,NULL);
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if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
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return 1;
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}
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memset(d_block,'\0',18);
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memcpy(d_block, blockData, 16);
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AppendCrc14443a(d_block, 16);
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ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
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// Receive the response
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len = ReaderReceive(receivedAnswer);
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if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
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return 2;
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}
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return 0;
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}
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int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
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{
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// variables
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int len;
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//uint32_t par = 0;
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uint8_t d_block[8];
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uint8_t* receivedAnswer = mifare_get_bigbufptr();
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// command MIFARE_CLASSIC_WRITEBLOCK
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memset(d_block,'\0',8);
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d_block[0]= blockNo;
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memcpy(d_block+1,blockData,4);
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AppendCrc14443a(d_block, 6);
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//i know the data send here is correct
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len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer,NULL);
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if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
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if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
|
|
{
|
|
// variables
|
|
int len;
|
|
|
|
// Mifare HALT
|
|
uint8_t* receivedAnswer = mifare_get_bigbufptr();
|
|
|
|
len = mifare_sendcmd_short(pcs, pcs == NULL ? 0:1, 0x50, 0x00, receivedAnswer, NULL);
|
|
if (len != 0) {
|
|
if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mifare_ultra_halt(uint32_t uid)
|
|
{
|
|
// variables
|
|
int len;
|
|
|
|
// Mifare HALT
|
|
uint8_t* receivedAnswer = mifare_get_bigbufptr();
|
|
|
|
len = mifare_sendcmd_short(NULL, 1, 0x50, 0x00, receivedAnswer, NULL);
|
|
if (len != 0) {
|
|
if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
|
|
// plus evtl. 8 sectors with 16 blocks each (4k cards)
|
|
uint8_t NumBlocksPerSector(uint8_t sectorNo)
|
|
{
|
|
if (sectorNo < 32)
|
|
return 4;
|
|
else
|
|
return 16;
|
|
}
|
|
|
|
uint8_t FirstBlockOfSector(uint8_t sectorNo)
|
|
{
|
|
if (sectorNo < 32)
|
|
return sectorNo * 4;
|
|
else
|
|
return 32*4 + (sectorNo - 32) * 16;
|
|
|
|
}
|
|
|
|
|
|
// 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 + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
|
|
return bytes_to_num(key, 6);
|
|
}
|
|
|
|
void emlClearMem(void) {
|
|
int b;
|
|
|
|
const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
|
|
const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
|
|
uint8_t* emCARD = eml_get_bigbufptr_cardmem();
|
|
|
|
memset(emCARD, 0, CARD_MEMORY_LEN);
|
|
|
|
// fill sectors trailer data
|
|
for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
|
|
emlSetMem((uint8_t *)trailer, b , 1);
|
|
}
|
|
|
|
// uid
|
|
emlSetMem((uint8_t *)uid, 0, 1);
|
|
return;
|
|
}
|