mirror of
https://github.com/Proxmark/proxmark3.git
synced 2025-08-20 05:13:22 -07:00
reworking magic cheneese card wipe (#365)
Implement hf mf cwipe. Remove wipe parameter from hf mf csetuid.
This commit is contained in:
Oleg Moiseenko
pwpiwi
parent
08b7cd17a5
commit
3a05a1e739
11 changed files with 382 additions and 119 deletions
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@ -396,7 +396,8 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t *key, uint8_t trgBlockNo,
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int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {
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UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};
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SendCommand(&c);
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UsbCommand resp;
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UsbCommand resp;
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if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1;
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memcpy(data, resp.d.asBytes, blocksCount * 16);
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return 0;
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@ -416,6 +417,7 @@ int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {
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UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
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SendCommand(&c);
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UsbCommand resp;
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if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
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isOK = resp.arg[0] & 0xff;
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@ -434,8 +436,9 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uin
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UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};
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memcpy(c.d.asBytes, data, 16);
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SendCommand(&c);
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UsbCommand resp;
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if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
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if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
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isOK = resp.arg[0] & 0xff;
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if (uid != NULL)
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memcpy(uid, resp.d.asBytes, 4);
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@ -445,25 +448,40 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uin
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PrintAndLog("Command execute timeout");
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return 1;
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}
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return 0;
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}
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int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, bool wantWipe) {
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int mfCWipe(uint32_t numSectors, bool gen1b, bool wantWipe, bool wantFill) {
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uint8_t isOK = 0;
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uint8_t cmdParams = wantWipe + wantFill * 0x02 + gen1b * 0x04;
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UsbCommand c = {CMD_MIFARE_CWIPE, {numSectors, cmdParams, 0}};
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SendCommand(&c);
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UsbCommand resp;
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WaitForResponse(CMD_ACK,&resp);
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isOK = resp.arg[0] & 0xff;
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return isOK;
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}
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int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID) {
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uint8_t oldblock0[16] = {0x00};
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uint8_t block0[16] = {0x00};
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int old, gen = 0;
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int gen = 0, res;
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gen = mfCIdentify();
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/* generation 1a magic card by default */
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uint8_t cmdParams = CSETBLOCK_SINGLE_OPER;
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if (gen == 2) {
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/* generation 1b magic card */
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old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER | CSETBLOCK_MAGIC_1B);
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} else {
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/* generation 1a magic card by default */
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old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER);
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cmdParams = CSETBLOCK_SINGLE_OPER | CSETBLOCK_MAGIC_1B;
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}
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res = mfCGetBlock(0, oldblock0, cmdParams);
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if (old == 0) {
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if (res == 0) {
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memcpy(block0, oldblock0, 16);
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PrintAndLog("old block 0: %s", sprint_hex(block0,16));
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} else {
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@ -474,25 +492,73 @@ int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, bool w
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// UID
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memcpy(block0, uid, 4);
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// Mifare UID BCC
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block0[4] = block0[0]^block0[1]^block0[2]^block0[3];
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block0[4] = block0[0] ^ block0[1] ^ block0[2] ^ block0[3];
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// mifare classic SAK(byte 5) and ATQA(byte 6 and 7, reversed)
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if (sak!=NULL)
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block0[5]=sak[0];
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if (atqa!=NULL) {
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block0[6]=atqa[1];
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block0[7]=atqa[0];
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if (sak != NULL)
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block0[5] = sak[0];
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if (atqa != NULL) {
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block0[6] = atqa[1];
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block0[7] = atqa[0];
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}
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PrintAndLog("new block 0: %s", sprint_hex(block0,16));
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PrintAndLog("new block 0: %s", sprint_hex(block0, 16));
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if (gen == 2) {
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/* generation 1b magic card */
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return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER | CSETBLOCK_MAGIC_1B);
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} else {
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/* generation 1a magic card by default */
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return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);
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res = mfCSetBlock(0, block0, oldUID, false, cmdParams);
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if (res) {
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PrintAndLog("Can't set block 0. Error: %d", res);
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return res;
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}
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return 0;
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}
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int mfCIdentify()
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{
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UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
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SendCommand(&c);
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UsbCommand resp;
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WaitForResponse(CMD_ACK,&resp);
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iso14a_card_select_t card;
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memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t));
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uint64_t select_status = resp.arg[0]; // 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS, 3: proprietary Anticollision
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if(select_status != 0) {
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uint8_t rats[] = { 0xE0, 0x80 }; // FSDI=8 (FSD=256), CID=0
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c.arg[0] = ISO14A_RAW | ISO14A_APPEND_CRC | ISO14A_NO_DISCONNECT;
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c.arg[1] = 2;
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c.arg[2] = 0;
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memcpy(c.d.asBytes, rats, 2);
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SendCommand(&c);
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WaitForResponse(CMD_ACK,&resp);
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}
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c.cmd = CMD_MIFARE_CIDENT;
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c.arg[0] = 0;
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c.arg[1] = 0;
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c.arg[2] = 0;
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SendCommand(&c);
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WaitForResponse(CMD_ACK,&resp);
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uint8_t isGeneration = resp.arg[0] & 0xff;
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switch( isGeneration ){
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case 1: PrintAndLog("Chinese magic backdoor commands (GEN 1a) detected"); break;
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case 2: PrintAndLog("Chinese magic backdoor command (GEN 1b) detected"); break;
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default: PrintAndLog("No chinese magic backdoor command detected"); break;
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}
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// disconnect
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c.cmd = CMD_READER_ISO_14443a;
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c.arg[0] = 0;
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c.arg[1] = 0;
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c.arg[2] = 0;
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SendCommand(&c);
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return (int) isGeneration;
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}
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// SNIFFER
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// constants
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@ -531,7 +597,7 @@ int isBlockEmpty(int blockN) {
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}
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int isBlockTrailer(int blockN) {
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return ((blockN & 0x03) == 0x03);
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return ((blockN & 0x03) == 0x03);
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}
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int saveTraceCard(void) {
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@ -593,6 +659,7 @@ int loadTraceCard(uint8_t *tuid) {
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blockNum++;
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}
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fclose(f);
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return 0;
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}
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@ -613,6 +680,7 @@ int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFil
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uid = bytes_to_num(tuid + 3, 4);
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traceState = TRACE_IDLE;
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return 0;
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}
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@ -815,6 +883,8 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
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return 0;
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}
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// DECODING
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int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){
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/*
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uint32_t nt; // tag challenge
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@ -835,48 +905,3 @@ int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data,
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return 0;
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}
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int mfCIdentify()
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{
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UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
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SendCommand(&c);
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UsbCommand resp;
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WaitForResponse(CMD_ACK,&resp);
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iso14a_card_select_t card;
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memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t));
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uint64_t select_status = resp.arg[0]; // 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS, 3: proprietary Anticollision
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if(select_status != 0) {
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uint8_t rats[] = { 0xE0, 0x80 }; // FSDI=8 (FSD=256), CID=0
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c.arg[0] = ISO14A_RAW | ISO14A_APPEND_CRC | ISO14A_NO_DISCONNECT;
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c.arg[1] = 2;
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c.arg[2] = 0;
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memcpy(c.d.asBytes, rats, 2);
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SendCommand(&c);
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WaitForResponse(CMD_ACK,&resp);
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}
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c.cmd = CMD_MIFARE_CIDENT;
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c.arg[0] = 0;
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c.arg[1] = 0;
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c.arg[2] = 0;
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SendCommand(&c);
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WaitForResponse(CMD_ACK,&resp);
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uint8_t isGeneration = resp.arg[0] & 0xff;
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switch( isGeneration ){
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case 1: PrintAndLog("Chinese magic backdoor commands (GEN 1a) detected"); break;
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case 2: PrintAndLog("Chinese magic backdoor command (GEN 1b) detected"); break;
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default: PrintAndLog("No chinese magic backdoor command detected"); break;
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}
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// disconnect
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c.cmd = CMD_READER_ISO_14443a;
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c.arg[0] = 0;
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c.arg[1] = 0;
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c.arg[2] = 0;
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SendCommand(&c);
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return (int) isGeneration;
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}
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