--- /dev/null
+//-----------------------------------------------------------------------------
+// Copyright (C) 2018 Merlok
+// Copyright (C) 2018 drHatson
+//
+// 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.
+//-----------------------------------------------------------------------------
+// iso14443-4 mifare commands
+//-----------------------------------------------------------------------------
+
+#include "mifare4.h"
+#include <ctype.h>
+#include <string.h>
+#include "cmdhf14a.h"
+#include "util.h"
+#include "ui.h"
+#include "crypto/libpcrypto.h"
+
+static bool VerboseMode = false;
+void mfpSetVerboseMode(bool verbose) {
+ VerboseMode = verbose;
+}
+
+typedef struct {
+ uint8_t Code;
+ const char *Description;
+} PlusErrorsElm;
+
+static const PlusErrorsElm PlusErrors[] = {
+ {0xFF, ""},
+ {0x00, "Transfer cannot be granted within the current authentication."},
+ {0x06, "Access Conditions not fulfilled. Block does not exist, block is not a value block."},
+ {0x07, "Too many read or write commands in the session or in the transaction."},
+ {0x08, "Invalid MAC in command or response"},
+ {0x09, "Block Number is not valid"},
+ {0x0a, "Invalid block number, not existing block number"},
+ {0x0b, "The current command code not available at the current card state."},
+ {0x0c, "Length error"},
+ {0x0f, "General Manipulation Error. Failure in the operation of the PICC (cannot write to the data block), etc."},
+ {0x90, "OK"},
+};
+int PlusErrorsLen = sizeof(PlusErrors) / sizeof(PlusErrorsElm);
+
+const char *mfpGetErrorDescription(uint8_t errorCode) {
+ for (int i = 0; i < PlusErrorsLen; i++)
+ if (errorCode == PlusErrors[i].Code)
+ return PlusErrors[i].Description;
+
+ return PlusErrors[0].Description;
+}
+
+AccessConditions_t MFAccessConditions[] = {
+ {0x00, "read AB; write AB; increment AB; decrement transfer restore AB"},
+ {0x01, "read AB; decrement transfer restore AB"},
+ {0x02, "read AB"},
+ {0x03, "read B; write B"},
+ {0x04, "read AB; writeB"},
+ {0x05, "read B"},
+ {0x06, "read AB; write B; increment B; decrement transfer restore AB"},
+ {0x07, "none"}
+};
+
+AccessConditions_t MFAccessConditionsTrailer[] = {
+ {0x00, "read A by A; read ACCESS by A; read B by A; write B by A"},
+ {0x01, "write A by A; read ACCESS by A write ACCESS by A; read B by A; write B by A"},
+ {0x02, "read ACCESS by A; read B by A"},
+ {0x03, "write A by B; read ACCESS by AB; write ACCESS by B; write B by B"},
+ {0x04, "write A by B; read ACCESS by AB; write B by B"},
+ {0x05, "read ACCESS by AB; write ACCESS by B"},
+ {0x06, "read ACCESS by AB"},
+ {0x07, "read ACCESS by AB"}
+};
+
+char *mfGetAccessConditionsDesc(uint8_t blockn, uint8_t *data) {
+ static char StaticNone[] = "none";
+
+ uint8_t data1 = ((data[1] >> 4) & 0x0f) >> blockn;
+ uint8_t data2 = ((data[2]) & 0x0f) >> blockn;
+ uint8_t data3 = ((data[2] >> 4) & 0x0f) >> blockn;
+
+ uint8_t cond = (data1 & 0x01) << 2 | (data2 & 0x01) << 1 | (data3 & 0x01);
+
+ if (blockn == 3) {
+ for (int i = 0; i < ARRAYLEN(MFAccessConditionsTrailer); i++)
+ if (MFAccessConditionsTrailer[i].cond == cond) {
+ return MFAccessConditionsTrailer[i].description;
+ }
+ } else {
+ for (int i = 0; i < ARRAYLEN(MFAccessConditions); i++)
+ if (MFAccessConditions[i].cond == cond) {
+ return MFAccessConditions[i].description;
+ }
+ };
+
+ return StaticNone;
+};
+
+int CalculateEncIVCommand(mf4Session *session, uint8_t *iv, bool verbose) {
+ memcpy(&iv[0], session->TI, 4);
+ memcpy(&iv[4], &session->R_Ctr, 2);
+ memcpy(&iv[6], &session->W_Ctr, 2);
+ memcpy(&iv[8], &session->R_Ctr, 2);
+ memcpy(&iv[10], &session->W_Ctr, 2);
+ memcpy(&iv[12], &session->R_Ctr, 2);
+ memcpy(&iv[14], &session->W_Ctr, 2);
+
+ return 0;
+}
+
+int CalculateEncIVResponse(mf4Session *session, uint8_t *iv, bool verbose) {
+ memcpy(&iv[0], &session->R_Ctr, 2);
+ memcpy(&iv[2], &session->W_Ctr, 2);
+ memcpy(&iv[4], &session->R_Ctr, 2);
+ memcpy(&iv[6], &session->W_Ctr, 2);
+ memcpy(&iv[8], &session->R_Ctr, 2);
+ memcpy(&iv[10], &session->W_Ctr, 2);
+ memcpy(&iv[12], session->TI, 4);
+
+ return 0;
+}
+
+
+int CalculateMAC(mf4Session *session, MACType_t mtype, uint8_t blockNum, uint8_t blockCount, uint8_t *data, int datalen, uint8_t *mac, bool verbose) {
+ if (!session || !session->Authenticated || !mac || !data || !datalen || datalen < 1)
+ return 1;
+
+ memset(mac, 0x00, 8);
+
+ uint16_t ctr = session->R_Ctr;
+ switch (mtype) {
+ case mtypWriteCmd:
+ case mtypWriteResp:
+ ctr = session->W_Ctr;
+ break;
+ case mtypReadCmd:
+ case mtypReadResp:
+ break;
+ }
+
+ uint8_t macdata[2049] = {data[0], (ctr & 0xFF), (ctr >> 8), 0};
+ int macdatalen = datalen;
+ memcpy(&macdata[3], session->TI, 4);
+
+ switch (mtype) {
+ case mtypReadCmd:
+ memcpy(&macdata[7], &data[1], datalen - 1);
+ macdatalen = datalen + 6;
+ break;
+ case mtypReadResp:
+ macdata[7] = blockNum;
+ macdata[8] = 0;
+ macdata[9] = blockCount;
+ memcpy(&macdata[10], &data[1], datalen - 1);
+ macdatalen = datalen + 9;
+ break;
+ case mtypWriteCmd:
+ memcpy(&macdata[7], &data[1], datalen - 1);
+ macdatalen = datalen + 6;
+ break;
+ case mtypWriteResp:
+ macdatalen = 1 + 6;
+ break;
+ }
+
+ if (verbose)
+ PrintAndLog("MAC data[%d]: %s", macdatalen, sprint_hex(macdata, macdatalen));
+
+ return aes_cmac8(NULL, session->Kmac, macdata, mac, macdatalen);
+}
+
+int MifareAuth4(mf4Session *session, uint8_t *keyn, uint8_t *key, bool activateField, bool leaveSignalON, bool verbose) {
+ uint8_t data[257] = {0};
+ int datalen = 0;
+
+ uint8_t RndA[17] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00};
+ uint8_t RndB[17] = {0};
+
+ if (session)
+ session->Authenticated = false;
+
+ uint8_t cmd1[] = {0x70, keyn[1], keyn[0], 0x00};
+ int res = ExchangeRAW14a(cmd1, sizeof(cmd1), activateField, true, data, sizeof(data), &datalen);
+ if (res) {
+ PrintAndLogEx(ERR, "Exchande raw error: %d", res);
+ DropField();
+ return 2;
+ }
+
+ if (verbose)
+ PrintAndLogEx(INFO, "<phase1: %s", sprint_hex(data, datalen));
+
+ if (datalen < 1) {
+ PrintAndLogEx(ERR, "Card response wrong length: %d", datalen);
+ DropField();
+ return 3;
+ }
+
+ if (data[0] != 0x90) {
+ PrintAndLogEx(ERR, "Card response error: %02x", data[2]);
+ DropField();
+ return 3;
+ }
+
+ if (datalen != 19) { // code 1b + 16b + crc 2b
+ PrintAndLogEx(ERR, "Card response must be 19 bytes long instead of: %d", datalen);
+ DropField();
+ return 3;
+ }
+
+ aes_decode(NULL, key, &data[1], RndB, 16);
+ RndB[16] = RndB[0];
+ if (verbose)
+ PrintAndLogEx(INFO, "RndB: %s", sprint_hex(RndB, 16));
+
+ uint8_t cmd2[33] = {0};
+ cmd2[0] = 0x72;
+
+ uint8_t raw[32] = {0};
+ memmove(raw, RndA, 16);
+ memmove(&raw[16], &RndB[1], 16);
+
+ aes_encode(NULL, key, raw, &cmd2[1], 32);
+ if (verbose)
+ PrintAndLogEx(INFO, ">phase2: %s", sprint_hex(cmd2, 33));
+
+ res = ExchangeRAW14a(cmd2, sizeof(cmd2), false, true, data, sizeof(data), &datalen);
+ if (res) {
+ PrintAndLogEx(ERR, "Exchande raw error: %d", res);
+ DropField();
+ return 4;
+ }
+
+ if (verbose)
+ PrintAndLogEx(INFO, "<phase2: %s", sprint_hex(data, datalen));
+
+ aes_decode(NULL, key, &data[1], raw, 32);
+
+ if (verbose) {
+ PrintAndLogEx(INFO, "res: %s", sprint_hex(raw, 32));
+ PrintAndLogEx(INFO, "RndA`: %s", sprint_hex(&raw[4], 16));
+ }
+
+ if (memcmp(&raw[4], &RndA[1], 16)) {
+ PrintAndLogEx(ERR, "\nAuthentication FAILED. rnd not equal");
+ if (verbose) {
+ PrintAndLogEx(ERR, "RndA reader: %s", sprint_hex(&RndA[1], 16));
+ PrintAndLogEx(ERR, "RndA card: %s", sprint_hex(&raw[4], 16));
+ }
+ DropField();
+ return 5;
+ }
+
+ if (verbose) {
+ PrintAndLogEx(INFO, " TI: %s", sprint_hex(raw, 4));
+ PrintAndLogEx(INFO, "pic: %s", sprint_hex(&raw[20], 6));
+ PrintAndLogEx(INFO, "pcd: %s", sprint_hex(&raw[26], 6));
+ }
+
+ uint8_t kenc[16] = {0};
+ memcpy(&kenc[0], &RndA[11], 5);
+ memcpy(&kenc[5], &RndB[11], 5);
+ for (int i = 0; i < 5; i++)
+ kenc[10 + i] = RndA[4 + i] ^ RndB[4 + i];
+ kenc[15] = 0x11;
+
+ aes_encode(NULL, key, kenc, kenc, 16);
+ if (verbose) {
+ PrintAndLogEx(INFO, "kenc: %s", sprint_hex(kenc, 16));
+ }
+
+ uint8_t kmac[16] = {0};
+ memcpy(&kmac[0], &RndA[7], 5);
+ memcpy(&kmac[5], &RndB[7], 5);
+ for(int i = 0; i < 5; i++)
+ kmac[10 + i] = RndA[0 + i] ^ RndB[0 + i];
+ kmac[15] = 0x22;
+
+ aes_encode(NULL, key, kmac, kmac, 16);
+ if (verbose) {
+ PrintAndLog("kmac: %s", sprint_hex(kmac, 16));
+ }
+
+ if (!leaveSignalON)
+ DropField();
+
+ if (verbose)
+ PrintAndLog("");
+
+ if (session) {
+ session->Authenticated = true;
+ session->R_Ctr = 0;
+ session->W_Ctr = 0;
+ session->KeyNum = keyn[1] + (keyn[0] << 8);
+ memmove(session->RndA, RndA, 16);
+ memmove(session->RndB, RndB, 16);
+ memmove(session->Key, key, 16);
+ memmove(session->TI, raw, 4);
+ memmove(session->PICCap2, &raw[20], 6);
+ memmove(session->PCDCap2, &raw[26], 6);
+ memmove(session->Kenc, kenc, 16);
+ memmove(session->Kmac, kmac, 16);
+ }
+
+ if (verbose)
+ PrintAndLogEx(INFO, "Authentication OK");
+
+ return 0;
+}
+
+int intExchangeRAW14aPlus(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {
+ if (VerboseMode)
+ PrintAndLogEx(INFO, ">>> %s", sprint_hex(datain, datainlen));
+
+ int res = ExchangeRAW14a(datain, datainlen, activateField, leaveSignalON, dataout, maxdataoutlen, dataoutlen);
+
+ if (VerboseMode)
+ PrintAndLogEx(INFO, "<<< %s", sprint_hex(dataout, *dataoutlen));
+
+ return res;
+}
+
+int MFPWritePerso(uint8_t *keyNum, uint8_t *key, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {
+ uint8_t rcmd[3 + 16] = {0xa8, keyNum[1], keyNum[0], 0x00};
+ memmove(&rcmd[3], key, 16);
+
+ return intExchangeRAW14aPlus(rcmd, sizeof(rcmd), activateField, leaveSignalON, dataout, maxdataoutlen, dataoutlen);
+}
+
+int MFPCommitPerso(bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {
+ uint8_t rcmd[1] = {0xaa};
+
+ return intExchangeRAW14aPlus(rcmd, sizeof(rcmd), activateField, leaveSignalON, dataout, maxdataoutlen, dataoutlen);
+}
+
+int MFPReadBlock(mf4Session *session, bool plain, uint8_t blockNum, uint8_t blockCount, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen, uint8_t *mac) {
+ uint8_t rcmd[4 + 8] = {(plain ? (0x37) : (0x33)), blockNum, 0x00, blockCount};
+ if (!plain && session)
+ CalculateMAC(session, mtypReadCmd, blockNum, blockCount, rcmd, 4, &rcmd[4], VerboseMode);
+
+ int res = intExchangeRAW14aPlus(rcmd, plain ? 4 : sizeof(rcmd), activateField, leaveSignalON, dataout, maxdataoutlen, dataoutlen);
+ if (res)
+ return res;
+
+ if (session)
+ session->R_Ctr++;
+
+ if (session && mac && *dataoutlen > 11)
+ CalculateMAC(session, mtypReadResp, blockNum, blockCount, dataout, *dataoutlen - 8 - 2, mac, VerboseMode);
+
+ return 0;
+}
+
+int MFPWriteBlock(mf4Session *session, uint8_t blockNum, uint8_t *data, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen, uint8_t *mac) {
+ uint8_t rcmd[1 + 2 + 16 + 8] = {0xA3, blockNum, 0x00};
+ memmove(&rcmd[3], data, 16);
+ if (session)
+ CalculateMAC(session, mtypWriteCmd, blockNum, 1, rcmd, 19, &rcmd[19], VerboseMode);
+
+ int res = intExchangeRAW14aPlus(rcmd, sizeof(rcmd), activateField, leaveSignalON, dataout, maxdataoutlen, dataoutlen);
+ if (res)
+ return res;
+
+ if (session)
+ session->W_Ctr++;
+
+ if (session && mac && *dataoutlen > 3)
+ CalculateMAC(session, mtypWriteResp, blockNum, 1, dataout, *dataoutlen, mac, VerboseMode);
+
+ return 0;
+}
+
+int mfpReadSector(uint8_t sectorNo, uint8_t keyType, uint8_t *key, uint8_t *dataout, bool verbose) {
+ uint8_t keyn[2] = {0};
+ bool plain = false;
+
+ uint16_t uKeyNum = 0x4000 + sectorNo * 2 + (keyType ? 1 : 0);
+ keyn[0] = uKeyNum >> 8;
+ keyn[1] = uKeyNum & 0xff;
+ if (verbose)
+ PrintAndLogEx(INFO, "--sector[%d]:%02x key:%04x", mfNumBlocksPerSector(sectorNo), sectorNo, uKeyNum);
+
+ mf4Session session;
+ int res = MifareAuth4(&session, keyn, key, true, true, verbose);
+ if (res) {
+ PrintAndLogEx(ERR, "Sector %d authentication error: %d", sectorNo, res);
+ return res;
+ }
+
+ uint8_t data[250] = {0};
+ int datalen = 0;
+ uint8_t mac[8] = {0};
+ uint8_t firstBlockNo = mfFirstBlockOfSector(sectorNo);
+ for (int n = firstBlockNo; n < firstBlockNo + mfNumBlocksPerSector(sectorNo); n++) {
+ res = MFPReadBlock(&session, plain, n & 0xff, 1, false, true, data, sizeof(data), &datalen, mac);
+ if (res) {
+ PrintAndLogEx(ERR, "Sector %d read error: %d", sectorNo, res);
+ DropField();
+ return res;
+ }
+
+ if (datalen && data[0] != 0x90) {
+ PrintAndLogEx(ERR, "Sector %d card read error: %02x %s", sectorNo, data[0], mfpGetErrorDescription(data[0]));
+ DropField();
+ return 5;
+ }
+ if (datalen != 1 + 16 + 8 + 2) {
+ PrintAndLogEx(ERR, "Sector %d error returned data length:%d", sectorNo, datalen);
+ DropField();
+ return 6;
+ }
+
+ memcpy(&dataout[(n - firstBlockNo) * 16], &data[1], 16);
+
+ if (verbose)
+ PrintAndLogEx(INFO, "data[%03d]: %s", n, sprint_hex(&data[1], 16));
+
+ if (memcmp(&data[1 + 16], mac, 8)) {
+ PrintAndLogEx(WARNING, "WARNING: mac on block %d not equal...", n);
+ PrintAndLogEx(WARNING, "MAC card: %s", sprint_hex(&data[1 + 16], 8));
+ PrintAndLogEx(WARNING, "MAC reader: %s", sprint_hex(mac, 8));
+
+ if (!verbose)
+ return 7;
+ } else {
+ if (verbose)
+ PrintAndLogEx(INFO, "MAC: %s", sprint_hex(&data[1 + 16], 8));
+ }
+ }
+ DropField();
+
+ 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 mfNumBlocksPerSector(uint8_t sectorNo) {
+ if (sectorNo < 32)
+ return 4;
+ else
+ return 16;
+}
+
+uint8_t mfFirstBlockOfSector(uint8_t sectorNo) {
+ if (sectorNo < 32)
+ return sectorNo * 4;
+ else
+ return 32 * 4 + (sectorNo - 32) * 16;
+}
+
+uint8_t mfSectorTrailer(uint8_t blockNo) {
+ if (blockNo < 32 * 4) {
+ return (blockNo | 0x03);
+ } else {
+ return (blockNo | 0x0f);
+ }
+}
+
+bool mfIsSectorTrailer(uint8_t blockNo) {
+ return (blockNo == mfSectorTrailer(blockNo));
+}
+
+uint8_t mfSectorNum(uint8_t blockNo) {
+ if (blockNo < 32 * 4)
+ return blockNo / 4;
+ else
+ return 32 + (blockNo - 32 * 4) / 16;
+
+}
projects / proxmark3-svn / blobdiff