X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/bfaecce6ebf50e296a1a4d221411581ff96f91c3..ce9a7cbf33ff29722d7e7f6adec4fe149f55ce87:/client/nonce2key/nonce2key.c

diff --git a/client/nonce2key/nonce2key.c b/client/nonce2key/nonce2key.c
index 032b15c4..95924e5e 100644
--- a/client/nonce2key/nonce2key.c
+++ b/client/nonce2key/nonce2key.c
@@ -9,57 +9,196 @@
 //-----------------------------------------------------------------------------
 // MIFARE Darkside hack
 //-----------------------------------------------------------------------------
-
 #include "nonce2key.h"
+#include "mifarehost.h"
 #include "ui.h"
+#include "proxmark3.h"
 
-int nonce2key(uint32_t uid, uint32_t nt, uint64_t par_info, uint64_t ks_info, uint64_t * key) {
-  struct Crypto1State *state, *state_s;
-  uint32_t pos, nr, rr, nr_diff;//, ks1, ks2;
-  byte_t bt, i, ks3x[8], par[8][8];
-  uint64_t key_recovered;
-  nr = rr = 0;
-  
-  // Reset the last three significant bits of the reader nonce
-  nr &= 0xffffff1f;
+int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_t ks_info, uint64_t * key) {
+
+
+	struct Crypto1State *state;
+	uint32_t i, pos, rr = 0, nr_diff;
+	byte_t bt, ks3x[8], par[8][8];
+
+	// Reset the last three significant bits of the reader nonce
+	nr &= 0xffffff1f;
   
-  PrintAndLog("\nuid(%08x) nt(%08x) par(%016llx) ks(%016llx)\n\n",uid,nt,par_info,ks_info);
-
-  for (pos=0; pos<8; pos++)
-  {
-    ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f;
-    bt = (par_info >> (pos*8)) & 0xff;
-    for (i=0; i<8; i++)
-    {
-      par[7-pos][i] = (bt >> i) & 0x01;
-    }
-  }
-
-  printf("|diff|{nr}    |ks3|ks3^5|parity         |\n");
-  printf("+----+--------+---+-----+---------------+\n");
-  for (i=0; i<8; i++)
-  {
-    nr_diff = nr | i << 5;
-    printf("| %02x |%08x|",i << 5, nr_diff);
-    printf(" %01x |  %01x  |",ks3x[i], ks3x[i]^5);
-    for (pos=0; pos<7; pos++) printf("%01x,", par[i][pos]);
-    printf("%01x|\n", par[i][7]);
-  }
+	PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx") nr(%08"llx")\n\n", uid, nt, par_info, ks_info, nr);
+
+	for ( pos = 0; pos < 8; pos++ ) {
+		ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f;
+		bt = (par_info >> (pos*8)) & 0xff;
+
+		for ( i = 0; i < 8; i++) {
+			par[7-pos][i] = (bt >> i) & 0x01;
+		}
+	}
+
+	printf("|diff|{nr}    |ks3|ks3^5|parity         |\n");
+	printf("+----+--------+---+-----+---------------+\n");
+
+	for ( i = 0; i < 8; i++) {
+		nr_diff = nr | i << 5;
+		printf("| %02x |%08x| %01x |  %01x  |", i << 5, nr_diff, ks3x[i], ks3x[i]^5);
+
+		for (pos = 0; pos < 7; pos++) printf("%01x,", par[i][pos]);
+		printf("%01x|\n", par[i][7]);
+	}
+	printf("+----+--------+---+-----+---------------+\n");
+
+	clock_t t1 = clock();
+
+	state = lfsr_common_prefix(nr, rr, ks3x, par);
+	lfsr_rollback_word(state, uid^nt, 0);
+	crypto1_get_lfsr(state, key);
+	crypto1_destroy(state);
+
+	t1 = clock() - t1;
+	if ( t1 > 0 ) PrintAndLog("Time in nonce2key: %.0f ticks \n", (float)t1);
+	return 0;
+}
+
+// *outputkey is not used...
+int tryMfk32(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
+
+	struct Crypto1State *s,*t;
+	uint64_t key;     // recovered key
+	uint32_t uid;     // serial number
+	uint32_t nt;      // tag challenge
+	uint32_t nr0_enc; // first encrypted reader challenge
+	uint32_t ar0_enc; // first encrypted reader response
+	uint32_t nr1_enc; // second encrypted reader challenge
+	uint32_t ar1_enc; // second encrypted reader response	
+	bool isSuccess = FALSE;
+	int counter = 0;
+	
+	uid 	= myuid;//(uint32_t)bytes_to_num(data +  0, 4);
+	nt 		= *(uint32_t*)(data+8);
+	nr0_enc = *(uint32_t*)(data+12);
+	ar0_enc = *(uint32_t*)(data+16);
+	nr1_enc = *(uint32_t*)(data+32);
+	ar1_enc = *(uint32_t*)(data+36);
+
+	// PrintAndLog("recovering key for:");
+	// PrintAndLog("    uid: %08x   %08x",uid, myuid);
+	// PrintAndLog("     nt: %08x",nt);
+	// PrintAndLog(" {nr_0}: %08x",nr0_enc);
+	// PrintAndLog(" {ar_0}: %08x",ar0_enc);
+	// PrintAndLog(" {nr_1}: %08x",nr1_enc);
+	// PrintAndLog(" {ar_1}: %08x",ar1_enc);
+
+	s = lfsr_recovery32(ar0_enc ^ prng_successor(nt, 64), 0);
   
-  state = lfsr_common_prefix(nr, rr, ks3x, par);
-	state_s = 0;
-	for (i = 0; (state) && ((state + i)->odd != 0 || (state + i)->even != 0) && (i < 10); i++)
-	{
-    printf("%08x|%08x\n",(state+i)->odd, (state+i)->even);
-		state_s = state + i;
+	for(t = s; t->odd | t->even; ++t) {
+		lfsr_rollback_word(t, 0, 0);
+		lfsr_rollback_word(t, nr0_enc, 1);
+		lfsr_rollback_word(t, uid ^ nt, 0);
+		crypto1_get_lfsr(t, &key);
+		crypto1_word(t, uid ^ nt, 0);
+		crypto1_word(t, nr1_enc, 1);
+		if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt, 64))) {
+			PrintAndLog("Found Key: [%012"llx"]", key);
+			isSuccess = TRUE;
+			++counter;
+			if (counter==20)
+				break;
+		}
 	}
-  if (!state_s) return 1;
 	
-  lfsr_rollback_word(state_s, uid^nt, 0);
-  crypto1_get_lfsr(state_s, &key_recovered);
-  if (!state) free(state);
+	num_to_bytes(key, 6, outputkey);
+	crypto1_destroy(t);
+	return isSuccess;
+}
+
+int tryMfk32_moebius(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
+
+	struct Crypto1State *s, *t;
+	uint64_t key;     // recovered key
+	uint32_t uid;     // serial number
+	uint32_t nt0;     // tag challenge first
+	uint32_t nt1;     // tag challenge second
+	uint32_t nr0_enc; // first encrypted reader challenge
+	uint32_t ar0_enc; // first encrypted reader response
+	uint32_t nr1_enc; // second encrypted reader challenge
+	uint32_t ar1_enc; // second encrypted reader response	
+	bool isSuccess = FALSE;
+	int counter = 0;
 	
-	*key = key_recovered;
+	uid 	= myuid;//(uint32_t)bytes_to_num(data +  0, 4);
+	nt0 	= *(uint32_t*)(data+8);
+	nr0_enc = *(uint32_t*)(data+12);
+	ar0_enc = *(uint32_t*)(data+16);
+	nt1 	= *(uint32_t*)(data+8);
+	nr1_enc = *(uint32_t*)(data+32);
+	ar1_enc = *(uint32_t*)(data+36);
+
+	s = lfsr_recovery32(ar0_enc ^ prng_successor(nt0, 64), 0);
   
-  return 0;
+	for(t = s; t->odd | t->even; ++t) {
+		lfsr_rollback_word(t, 0, 0);
+		lfsr_rollback_word(t, nr0_enc, 1);
+		lfsr_rollback_word(t, uid ^ nt0, 0);
+		crypto1_get_lfsr(t, &key);
+		
+		crypto1_word(t, uid ^ nt1, 0);
+		crypto1_word(t, nr1_enc, 1);
+		if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt1, 64))) {
+			PrintAndLog("Found Key: [%012"llx"]",key);
+			isSuccess = TRUE;
+			++counter;
+			if (counter==20)
+				break;
+		}
+	}
+	num_to_bytes(key, 6, outputkey);
+	crypto1_destroy(t);
+	return isSuccess;
+}
+
+int tryMfk64(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
+
+	struct Crypto1State *revstate;
+	uint64_t key;     // recovered key
+	uint32_t uid;     // serial number
+	uint32_t nt;      // tag challenge
+	uint32_t nr_enc;  // encrypted reader challenge
+	uint32_t ar_enc;  // encrypted reader response
+	uint32_t at_enc;  // encrypted tag response
+	uint32_t ks2;     // keystream used to encrypt reader response
+	uint32_t ks3;     // keystream used to encrypt tag response
+
+	struct Crypto1State mpcs = {0, 0};
+	struct Crypto1State *pcs;
+	pcs = &mpcs;
+	
+	uid 	= myuid;//(uint32_t)bytes_to_num(data +  0, 4);
+	nt	= *(uint32_t*)(data+8);
+	nr_enc	= *(uint32_t*)(data+12);
+	ar_enc	= *(uint32_t*)(data+16);
+	
+	crypto1_word(pcs, nr_enc , 1);
+	at_enc = prng_successor(nt, 96) ^ crypto1_word(pcs, 0, 0);
+
+	// printf("Recovering key for:\n");
+	// printf("  uid: %08x\n",uid);
+	// printf("   nt: %08x\n",nt);
+	// printf(" {nr}: %08x\n",nr_enc);
+	// printf(" {ar}: %08x\n",ar_enc);
+	// printf(" {at}: %08x\n",at_enc);
+
+	// Extract the keystream from the messages
+	ks2 = ar_enc ^ prng_successor(nt, 64);
+	ks3 = at_enc ^ prng_successor(nt, 96);
+
+	revstate = lfsr_recovery64(ks2, ks3);
+	lfsr_rollback_word(revstate, 0, 0);
+	lfsr_rollback_word(revstate, 0, 0);
+	lfsr_rollback_word(revstate, nr_enc, 1);
+	lfsr_rollback_word(revstate, uid ^ nt, 0);
+	crypto1_get_lfsr(revstate, &key);
+	PrintAndLog("Found Key: [%012"llx"]",key);
+	num_to_bytes(key, 6, outputkey);
+	crypto1_destroy(revstate);
+	return 0;
 }