X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/07b9e989701955834468e3ce8ce200ee3c2a1013..325f26e25dfd0315d080214bdcaf4d3239ff491c:/client/cmdhfmf.c diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c index ec542eb3..7114945d 100644 --- a/client/cmdhfmf.c +++ b/client/cmdhfmf.c @@ -31,6 +31,8 @@ int usage_hf14_mf1ksim(void){ PrintAndLog(" n (Optional) Automatically exit simulation after blocks have been read by reader. 0 = infinite"); PrintAndLog(" i (Optional) Interactive, means that console will not be returned until simulation finishes or is aborted"); PrintAndLog(" x (Optional) Crack, performs the 'reader attack', nr/ar attack against a legitimate reader, fishes out the key(s)"); + PrintAndLog(" e (Optional) Fill simulator keys from what we crack"); + PrintAndLog(" v (Optional) Show maths used for cracking reader. Useful for debugging."); PrintAndLog("samples:"); PrintAndLog(" hf mf sim u 0a0a0a0a"); PrintAndLog(" hf mf sim u 11223344556677"); @@ -125,6 +127,21 @@ int usage_hf14_chk(void){ PrintAndLog(" hf mf chk *1 ? d -- target all blocks, all keys, 1K, write to file"); return 0; } +int usage_hf14_keybrute(void){ + PrintAndLog("J_Run's 2nd phase of multiple sector nested authentication key recovery"); + PrintAndLog("You have a known 4 last bytes of a key recovered with mf_nonce_brute tool."); + PrintAndLog("First 2 bytes of key will be bruteforced"); + PrintAndLog(""); + PrintAndLog("Usage: hf mf keybrute [h] "); + PrintAndLog("options:"); + PrintAndLog(" h this help"); + PrintAndLog(" target block number"); + PrintAndLog(" target key type"); + PrintAndLog(" candidate key from mf_nonce_brute tool"); + PrintAndLog("samples:"); + PrintAndLog(" hf mf keybrute 1 A 000011223344"); + return 0; +} int CmdHF14AMifare(const char *Cmd) { uint32_t uid = 0; @@ -197,18 +214,22 @@ start: } } printf("\n"); + // error + if (isOK != 1) return 1; - // par == 0 - if (isOK == -1 && par_list == 0) { - if (!nonce2key_ex(uid, nt, nr, ks_list, &r_key) ){ + if (par_list == 0 && ks_list != 0) { + // this special attack when parities is zero, uses checkkeys. Which now with block/keytype option also needs. + // but it uses 0|1 instead of 0x60|0x61... + if (nonce2key_ex(blockNo, keytype - 0x60 , uid, nt, nr, ks_list, &r_key) ){ + PrintAndLog("Trying again with a different reader nonce..."); + c.arg[0] = false; + goto start; + } else { PrintAndLog("Found valid key: %012"llx" \n", r_key); goto END; } } - - // error - if (isOK != 1) return 1; - + // execute original function from util nonce2key if (nonce2key(uid, nt, nr, par_list, ks_list, &r_key)) { isOK = 2; @@ -217,6 +238,16 @@ start: c.arg[0] = false; goto start; } else { + + // nonce2key found a candidate key. Lets verify it. + uint8_t keyblock[] = {0,0,0,0,0,0}; + num_to_bytes(r_key, 6, keyblock); + uint64_t key64 = 0; + int res = mfCheckKeys(blockNo, keytype - 0x60 , false, 1, keyblock, &key64); + if ( res > 0 ) { + PrintAndLog("Candidate Key found (%012"llx") - Test authentication failed. Starting over darkside attack", r_key); + goto start; + } PrintAndLog("Found valid key: %012"llx" \n", r_key); } END: @@ -443,6 +474,7 @@ int CmdHF14AMfDump(const char *Cmd) { if ( bytes_read == 0) { PrintAndLog("File reading error."); fclose(fin); + fin = NULL; return 2; } } @@ -453,12 +485,14 @@ int CmdHF14AMfDump(const char *Cmd) { if ( bytes_read == 0) { PrintAndLog("File reading error."); fclose(fin); + fin = NULL; return 2; } } fclose(fin); - + fin = NULL; + PrintAndLog("|-----------------------------------------|"); PrintAndLog("|------ Reading sector access bits...-----|"); PrintAndLog("|-----------------------------------------|"); @@ -564,6 +598,7 @@ int CmdHF14AMfDump(const char *Cmd) { uint16_t numblocks = FirstBlockOfSector(numSectors - 1) + NumBlocksPerSector(numSectors - 1); fwrite(carddata, 1, 16*numblocks, fout); fclose(fout); + fout = NULL; PrintAndLog("Dumped %d blocks (%d bytes) to file dumpdata.bin", numblocks, 16*numblocks); } @@ -612,6 +647,7 @@ int CmdHF14AMfRestore(const char *Cmd) { if ( bytes_read == 0) { PrintAndLog("File reading error (dumpkeys.bin)."); fclose(fkeys); + fkeys = NULL; return 2; } } @@ -621,6 +657,7 @@ int CmdHF14AMfRestore(const char *Cmd) { if ( bytes_read == 0) { PrintAndLog("File reading error (dumpkeys.bin)."); fclose(fkeys); + fkeys = NULL; return 2; } } @@ -641,6 +678,7 @@ int CmdHF14AMfRestore(const char *Cmd) { if ( bytes_read == 0) { PrintAndLog("File reading error (dumpdata.bin)."); fclose(fdump); + fdump = NULL; return 2; } @@ -676,6 +714,7 @@ int CmdHF14AMfRestore(const char *Cmd) { } fclose(fdump); + fdump = NULL; return 0; } @@ -1018,7 +1057,7 @@ int CmdHF14AMfNestedHard(const char *Cmd) { slow ? "Yes" : "No", tests); - int16_t isOK = mfnestedhard(blockNo, keyType, key, trgBlockNo, trgKeyType, know_target_key?trgkey:NULL, nonce_file_read, nonce_file_write, slow, tests); + int16_t isOK = mfnestedhard(blockNo, keyType, key, trgBlockNo, trgKeyType, know_target_key ? trgkey : NULL, nonce_file_read, nonce_file_write, slow, tests); if (isOK) { switch (isOK) { @@ -1323,7 +1362,7 @@ int CmdHF14AMfChk(const char *Cmd) { #define ATTACK_KEY_COUNT 8 sector *k_sector = NULL; uint8_t k_sectorsCount = 16; -void readerAttack(nonces_t data[], bool setEmulatorMem) { +void readerAttack(nonces_t data[], bool setEmulatorMem, bool verbose) { // initialize storage for found keys if (k_sector == NULL) @@ -1344,8 +1383,10 @@ void readerAttack(nonces_t data[], bool setEmulatorMem) { printf("enter reader attack\n"); for (uint8_t i = 0; i < ATTACK_KEY_COUNT; ++i) { if (data[i].ar2 > 0) { - - if (tryMfk32(data[i], &key)) { + + // We can probably skip this, mfkey32v2 is more reliable. +#ifdef HFMF_TRYMFK32 + if (tryMfk32(data[i], &key, verbose)) { PrintAndLog("Found Key%s for sector %02d: [%012"llx"]" , (data[i].keytype) ? "B" : "A" , data[i].sector @@ -1360,22 +1401,43 @@ void readerAttack(nonces_t data[], bool setEmulatorMem) { uint8_t memBlock[16] = {0,0,0,0,0,0, 0xff, 0x0F, 0x80, 0x69, 0,0,0,0,0,0}; num_to_bytes( k_sector[i].Key[0], 6, memBlock); num_to_bytes( k_sector[i].Key[1], 6, memBlock+10); - mfEmlSetMem( memBlock, i*4 + 3, 1); PrintAndLog("Setting Emulator Memory Block %02d: [%s]" - , i*4 + 3 + , ((data[i].sector)*4) + 3 , sprint_hex( memBlock, sizeof(memBlock)) ); + mfEmlSetMem( memBlock, ((data[i].sector)*4) + 3, 1); } - break; + continue; } +#endif //moebius attack - // if (tryMfk32_moebius(data[i+ATTACK_KEY_COUNT], &key)) { - // PrintAndLog("M-Found Key%s for sector %02d: [%012"llx"]" - // ,(data[i+ATTACK_KEY_COUNT].keytype) ? "B" : "A" - // , data[i+ATTACK_KEY_COUNT].sector - // , key - // ); - // } + if (tryMfk32_moebius(data[i+ATTACK_KEY_COUNT], &key, verbose)) { + uint8_t sectorNum = data[i+ATTACK_KEY_COUNT].sector; + uint8_t keyType = data[i+ATTACK_KEY_COUNT].keytype; + + PrintAndLog("M-Found Key%s for sector %02d: [%012"llx"]" + , keyType ? "B" : "A" + , sectorNum + , key + ); + + k_sector[sectorNum].Key[keyType] = key; + k_sector[sectorNum].foundKey[keyType] = TRUE; + + //set emulator memory for keys + if (setEmulatorMem) { + uint8_t memBlock[16] = {0,0,0,0,0,0, 0xff, 0x0F, 0x80, 0x69, 0,0,0,0,0,0}; + num_to_bytes( k_sector[sectorNum].Key[0], 6, memBlock); + num_to_bytes( k_sector[sectorNum].Key[1], 6, memBlock+10); + PrintAndLog("Setting Emulator Memory Block %02d: [%s]" + , (sectorNum*4) + 3 + , sprint_hex( memBlock, sizeof(memBlock)) + ); + mfEmlSetMem( memBlock, (sectorNum*4) + 3, 1); + } + continue; + } + } } } @@ -1385,11 +1447,14 @@ int CmdHF14AMf1kSim(const char *Cmd) { uint8_t uid[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; uint8_t exitAfterNReads = 0; uint8_t flags = (FLAG_UID_IN_EMUL | FLAG_4B_UID_IN_DATA); - int uidlen = 0; + int uidlen = 0; bool setEmulatorMem = false; uint8_t cmdp = 0; bool errors = false; + // If set to true, we should show our workings when doing NR_AR_ATTACK. + bool verbose = false; + while(param_getchar(Cmd, cmdp) != 0x00) { switch(param_getchar(Cmd, cmdp)) { case 'e': @@ -1421,6 +1486,11 @@ int CmdHF14AMf1kSim(const char *Cmd) { } cmdp +=2; break; + case 'v': + case 'V': + verbose = true; + cmdp++; + break; case 'x': case 'X': flags |= FLAG_NR_AR_ATTACK; @@ -1460,12 +1530,13 @@ int CmdHF14AMf1kSim(const char *Cmd) { if ( (resp.arg[0] & 0xffff) != CMD_SIMULATE_MIFARE_CARD ) break; memcpy( data, resp.d.asBytes, sizeof(data) ); - readerAttack(data, setEmulatorMem); + readerAttack(data, setEmulatorMem, verbose); } if (k_sector != NULL) { printKeyTable(k_sectorsCount, k_sector ); free(k_sector); + k_sector = NULL; } } return 0; @@ -1639,6 +1710,43 @@ int CmdHF14AMfDbg(const char *Cmd) { return 0; } +int CmdHF14AMfKeyBrute(const char *Cmd) { + + uint8_t blockNo = 0, keytype = 0; + uint8_t key[6] = {0, 0, 0, 0, 0, 0}; + uint64_t foundkey = 0; + + char cmdp = param_getchar(Cmd, 0); + if ( cmdp == 'H' || cmdp == 'h') return usage_hf14_keybrute(); + + // block number + blockNo = param_get8(Cmd, 0); + + // keytype + cmdp = param_getchar(Cmd, 1); + if (cmdp == 'B' || cmdp == 'b') keytype = 1; + + // key + if (param_gethex(Cmd, 2, key, 12)) return usage_hf14_keybrute(); + + clock_t t1 = clock(); + time_t start, end; + time(&start); + + if (mfKeyBrute( blockNo, keytype, key, &foundkey)) + PrintAndLog("Found valid key: %012"llx" \n", foundkey); + else + PrintAndLog("Key not found"); + + t1 = clock() - t1; + time(&end); + unsigned long elapsed_time = difftime(end, start); + if ( t1 > 0 ) + PrintAndLog("\nTime in keybrute: %.0f ticks %u seconds\n", (float)t1, elapsed_time); + + return 0; +} + void printKeyTable( uint8_t sectorscnt, sector *e_sector ){ PrintAndLog("|---|----------------|---|----------------|---|"); PrintAndLog("|sec|key A |res|key B |res|"); @@ -2379,10 +2487,11 @@ static command_t CommandTable[] = { {"dump", CmdHF14AMfDump, 0, "Dump MIFARE classic tag to binary file"}, {"restore", CmdHF14AMfRestore, 0, "Restore MIFARE classic binary file to BLANK tag"}, {"wrbl", CmdHF14AMfWrBl, 0, "Write MIFARE classic block"}, - {"chk", CmdHF14AMfChk, 0, "Test block keys"}, - {"mifare", CmdHF14AMifare, 0, "Read parity error messages."}, - {"nested", CmdHF14AMfNested, 0, "Test nested authentication"}, + {"chk", CmdHF14AMfChk, 0, "Check keys"}, + {"mifare", CmdHF14AMifare, 0, "Darkside attack. read parity error messages."}, + {"nested", CmdHF14AMfNested, 0, "Nested attack. Test nested authentication"}, {"hardnested", CmdHF14AMfNestedHard, 0, "Nested attack for hardened Mifare cards"}, + {"keybrute", CmdHF14AMfKeyBrute, 0, "J_Run's 2nd phase of multiple sector nested authentication key recovery"}, {"sniff", CmdHF14AMfSniff, 0, "Sniff card-reader communication"}, {"sim", CmdHF14AMf1kSim, 0, "Simulate MIFARE card"}, {"eclr", CmdHF14AMfEClear, 0, "Clear simulator memory block"},