mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-08-14 18:48:13 -07:00
1. fixed (it seems) readline behavior. Now there is no proxmark3 prompts on the data.
2. emulator goes into beta stage. works: - work with 4BUID and 7BUID dumps - load/save/grab dumps - emulate select - emulate authentication (with nested) - emulate read/write blocks - emulate NACK-ACK ping-pong
This commit is contained in:
Merlokbr@gmail.com
parent
ab8b654efa
commit
51969283ec
4 changed files with 111 additions and 77 deletions
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@ -2008,7 +2008,7 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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int vHf = 0; // in mV
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int nextCycleTimeout = 0;
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int res;
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uint32_t timer = 0;
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// uint32_t timer = 0;
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uint32_t selTimer = 0;
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uint32_t authTimer = 0;
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uint32_t par = 0;
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@ -2016,13 +2016,15 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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uint8_t cardWRBL = 0;
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uint8_t cardAUTHSC = 0;
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uint8_t cardAUTHKEY = 0xff; // no authentication
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uint32_t cardRn = 0;
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uint32_t cardRr = 0;
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uint32_t cuid = 0;
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uint32_t rn_enc = 0;
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uint32_t ans = 0;
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struct Crypto1State mpcs = {0, 0};
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struct Crypto1State *pcs;
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pcs = &mpcs;
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uint64_t key64 = 0xffffffffffffULL;
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uint8_t* receivedCmd = eml_get_bigbufptr_recbuf();
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uint8_t *response = eml_get_bigbufptr_sendbuf();
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@ -2040,6 +2042,9 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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// clear trace
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traceLen = 0;
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tracing = true;
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// Authenticate response - nonce
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uint32_t nonce = bytes_to_num(rAUTH_NT, 4);
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// get UID from emul memory
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emlGetMemBt(receivedCmd, 7, 1);
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@ -2061,30 +2066,6 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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// -------------------------------------- test area
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// Authenticate response - nonce
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uint8_t *resp1 = (((uint8_t *)BigBuf) + EML_RESPONSES);
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int resp1Len;
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// uint8_t *resp2 = (((uint8_t *)BigBuf) + EML_RESPONSES + 200);
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// int resp2Len;
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CodeIso14443aAsTag(rAUTH_NT, sizeof(rAUTH_NT));
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memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax;
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timer = GetTickCount();
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uint32_t nonce = bytes_to_num(rAUTH_NT, 4);
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uint32_t rn_enc = 0x98d76b77; // !!!!!!!!!!!!!!!!!
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uint32_t ans = 0;
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cuid = bytes_to_num(rUIDBCC1, 4);
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/*
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crypto1_create(pcs, key64);
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crypto1_word(pcs, cuid ^ nonce, 0);
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crypto1_word(pcs, rn_enc , 1);
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crypto1_word(pcs, 0, 0);
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ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);
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num_to_bytes(ans, 4, rAUTH_AT);
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CodeIso14443aAsTag(rAUTH_AT, sizeof(rAUTH_AT));
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memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax;
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Dbprintf("crypto auth time: %d", GetTickCount() - timer);
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*/
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// -------------------------------------- END test area
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// start mkseconds counter
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StartCountUS();
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@ -2178,7 +2159,7 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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break;
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}
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LED_B_ON();
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Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);
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if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);
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}
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break;
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@ -2205,16 +2186,22 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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}
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case MFEMUL_AUTH1:{
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if (len == 8) {
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// ---------------------------------
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rn_enc = bytes_to_num(receivedCmd, 4);
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crypto1_create(pcs, key64);
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crypto1_word(pcs, cuid ^ nonce, 0);
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crypto1_word(pcs, rn_enc , 1);
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crypto1_word(pcs, 0, 0);
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ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);
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num_to_bytes(ans, 4, rAUTH_AT);
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// ---------------------------------
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EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
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// --- crypto
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rn_enc = bytes_to_num(receivedCmd, 4);
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cardRn = rn_enc ^ crypto1_word(pcs, rn_enc , 1);
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cardRr = bytes_to_num(&receivedCmd[4], 4) ^ crypto1_word(pcs, 0, 0);
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// test if auth OK
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if (cardRr != prng_successor(nonce, 64)){
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Dbprintf("AUTH FAILED. cardRr=%08x, suc=%08x", cardRr, prng_successor(nonce, 64));
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cardSTATE = MFEMUL_IDLE;
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LED_B_OFF();
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LED_C_OFF();
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break;
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}
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ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);
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num_to_bytes(ans, 4, rAUTH_AT);
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// --- crypto
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EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
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cardSTATE = MFEMUL_AUTH2;
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} else {
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cardSTATE = MFEMUL_IDLE;
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@ -2228,34 +2215,58 @@ void Mifare1ksim(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
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LED_C_ON();
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cardSTATE = MFEMUL_WORK;
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Dbprintf("AUTH COMPLETED. sec=%d, key=%d time=%d", cardAUTHSC, cardAUTHKEY, GetTickCount() - authTimer);
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Dbprintf("AUTH COMPLETED. sec=%d, key=%d time=%d", cardAUTHSC, cardAUTHKEY, GetTickCount() - authTimer);
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break;
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}
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case MFEMUL_WORK:{
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// auth
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if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {
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authTimer = GetTickCount();
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// EmSendCmd(rAUTH_NT, sizeof(rAUTH_NT));
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//SpinDelayUs(190);
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EmSendCmd14443aRaw(resp1, resp1Len, 0);
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LogTrace(NULL, 0, GetDeltaCountUS(), 0, TRUE);
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// crypto1_create(pcs, key64);
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// if (cardAUTHKEY == 0xff) { // first auth
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// crypto1_word(pcs, cuid ^ bytes_to_num(rAUTH_NT, 4), 0); // uid ^ nonce
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// } else { // nested auth
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// }
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cardAUTHSC = receivedCmd[1] / 4; // received block num
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cardAUTHKEY = receivedCmd[0] - 0x60;
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cardSTATE = MFEMUL_AUTH1;
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nextCycleTimeout = 10;
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break;
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}
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if (len == 0) break;
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// decrypt seqence
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if (cardAUTHKEY != 0xff) mf_crypto1_decrypt(pcs, receivedCmd, len);
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if (cardAUTHKEY == 0xff) {
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// first authentication
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if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {
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authTimer = GetTickCount();
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cardAUTHSC = receivedCmd[1] / 4; // received block num
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cardAUTHKEY = receivedCmd[0] - 0x60;
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// --- crypto
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crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
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ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0);
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num_to_bytes(nonce, 4, rAUTH_AT);
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EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
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// --- crypto
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// last working revision
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// EmSendCmd14443aRaw(resp1, resp1Len, 0);
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// LogTrace(NULL, 0, GetDeltaCountUS(), 0, true);
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cardSTATE = MFEMUL_AUTH1;
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nextCycleTimeout = 10;
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break;
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}
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} else {
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// decrypt seqence
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mf_crypto1_decrypt(pcs, receivedCmd, len);
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// nested authentication
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if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {
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authTimer = GetTickCount();
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cardAUTHSC = receivedCmd[1] / 4; // received block num
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cardAUTHKEY = receivedCmd[0] - 0x60;
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// --- crypto
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crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
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ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0);
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num_to_bytes(ans, 4, rAUTH_AT);
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EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
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// --- crypto
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cardSTATE = MFEMUL_AUTH1;
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nextCycleTimeout = 10;
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break;
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}
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}
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// rule 13 of 7.5.3. in ISO 14443-4. chaining shall be continued
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// BUT... ACK --> NACK
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@ -2272,7 +2283,7 @@ LogTrace(NULL, 0, GetDeltaCountUS(), 0, TRUE);
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// read block
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if (len == 4 && receivedCmd[0] == 0x30) {
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if (receivedCmd[1] >= 16 * 4) {
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if (receivedCmd[1] >= 16 * 4 || receivedCmd[1] / 4 != cardAUTHSC) {
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EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
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break;
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}
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@ -2285,7 +2296,7 @@ LogTrace(NULL, 0, GetDeltaCountUS(), 0, TRUE);
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// write block
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if (len == 4 && receivedCmd[0] == 0xA0) {
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if (receivedCmd[1] >= 16 * 4) {
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if (receivedCmd[1] >= 16 * 4 || receivedCmd[1] / 4 != cardAUTHSC) {
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EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
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break;
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}
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@ -2304,13 +2315,15 @@ LogTrace(NULL, 0, GetDeltaCountUS(), 0, TRUE);
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Dbprintf("--> HALTED. Selected time: %d ms", GetTickCount() - selTimer);
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break;
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}
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break;
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// command not allowed
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if (len == 4) {
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EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
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break;
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}
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// case break
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break;
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}
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case MFEMUL_WRITEBL2:{
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if (len == 18){
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@ -2319,8 +2332,12 @@ LogTrace(NULL, 0, GetDeltaCountUS(), 0, TRUE);
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EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
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cardSTATE = MFEMUL_WORK;
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break;
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} else {
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cardSTATE = MFEMUL_IDLE;
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LED_B_OFF();
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LED_C_OFF();
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break;
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}
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Dbprintf("err write block: %d len:%d", cardWRBL, len);
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break;
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}
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