X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/76ef5273d84d043288e22c91d941558e75fcb793..11117f6ab52be647a73fbdcce36dc397ce91eb45:/client/cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 9f337a5b..cdac6476 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1016,7 +1016,7 @@ int CmdHF14AMfChk(const char *Cmd)
 	return 0;
 }
 
-void readerAttack(nonces_t ar_resp[], bool setEmulatorMem) {
+void readerAttack(nonces_t ar_resp[], bool setEmulatorMem, bool doStandardAttack) {
 	#define ATTACK_KEY_COUNT 8 // keep same as define in iso14443a.c -> Mifare1ksim()
 	uint64_t key = 0;
 	typedef struct {
@@ -1034,7 +1034,7 @@ void readerAttack(nonces_t ar_resp[], bool setEmulatorMem) {
 	for (uint8_t i = 0; i<ATTACK_KEY_COUNT; i++) {
 		if (ar_resp[i].ar2 > 0) {
 			//PrintAndLog("DEBUG: Trying sector %d, cuid %08x, nt %08x, ar %08x, nr %08x, ar2 %08x, nr2 %08x",ar_resp[i].sector, ar_resp[i].cuid,ar_resp[i].nonce,ar_resp[i].ar,ar_resp[i].nr,ar_resp[i].ar2,ar_resp[i].nr2);
-			if (mfkey32(ar_resp[i], &key)) {
+			if (doStandardAttack && mfkey32(ar_resp[i], &key)) {
 				PrintAndLog("  Found Key%s for sector %02d: [%04x%08x]", (ar_resp[i].keytype) ? "B" : "A", ar_resp[i].sector, (uint32_t) (key>>32), (uint32_t) (key &0xFFFFFFFF));
 
 				for (uint8_t ii = 0; ii<ATTACK_KEY_COUNT; ii++) {
@@ -1054,6 +1054,34 @@ void readerAttack(nonces_t ar_resp[], bool setEmulatorMem) {
 						}
 					}
 				}
+			} else if (tryMfk32_moebius(ar_resp[i+ATTACK_KEY_COUNT], &key)) {
+				uint8_t sectorNum = ar_resp[i+ATTACK_KEY_COUNT].sector;
+				uint8_t keyType = ar_resp[i+ATTACK_KEY_COUNT].keytype;
+
+				PrintAndLog("M-Found Key%s for sector %02d: [%012"llx"]"
+					, keyType ? "B" : "A"
+					, sectorNum
+					, key
+				);
+
+				for (uint8_t ii = 0; ii<ATTACK_KEY_COUNT; ii++) {
+					if (key_cnt[ii]==0 || stSector[ii]==sectorNum) {
+						if (keyType==0) {
+							//keyA
+							sector_trailer[ii].keyA = key;
+							stSector[ii] = sectorNum;
+							key_cnt[ii]++;
+							break;
+						} else {
+							//keyB
+							sector_trailer[ii].keyB = key;
+							stSector[ii] = sectorNum;
+							key_cnt[ii]++;
+							break;
+						}
+					}
+				}
+				continue;
 			}
 		}
 	}
@@ -1079,14 +1107,15 @@ void readerAttack(nonces_t ar_resp[], bool setEmulatorMem) {
 			}
 		}
 	}
-	//moebius attack
+	/*
+	//un-comment to use as well moebius attack
 	for (uint8_t i = ATTACK_KEY_COUNT; i<ATTACK_KEY_COUNT*2; i++) {
 		if (ar_resp[i].ar2 > 0) {
 			if (tryMfk32_moebius(ar_resp[i], &key)) {
 				PrintAndLog("M-Found Key%s for sector %02d: [%04x%08x]", (ar_resp[i].keytype) ? "B" : "A", ar_resp[i].sector, (uint32_t) (key>>32), (uint32_t) (key &0xFFFFFFFF));
 			}
 		}
-	}
+	}*/
 }
 
 int usage_hf14_mf1ksim(void) {
@@ -1099,6 +1128,7 @@ int usage_hf14_mf1ksim(void) {
 	PrintAndLog("      x    (Optional) Crack, performs the 'reader attack', nr/ar attack against a legitimate reader, fishes out the key(s)");
 	PrintAndLog("      e    (Optional) set keys found from 'reader attack' to emulator memory (implies x and i)");
 	PrintAndLog("      f    (Optional) get UIDs to use for 'reader attack' from file 'f <filename.txt>' (implies x and i)");
+	PrintAndLog("      r    (Optional) Generate random nonces instead of sequential nonces. Standard reader attack won't work with this option, only moebius attack works.");
 	PrintAndLog("samples:");
 	PrintAndLog("           hf mf sim u 0a0a0a0a");
 	PrintAndLog("           hf mf sim u 11223344556677");
@@ -1123,7 +1153,6 @@ int CmdHF14AMf1kSim(const char *Cmd) {
 	memset(filename, 0x00, sizeof(filename));
 	int len = 0;
 	char buf[64];
-	uint8_t uidBuffer[64];
 
 	uint8_t cmdp = 0;
 	bool errors = false;
@@ -1164,6 +1193,11 @@ int CmdHF14AMf1kSim(const char *Cmd) {
 			exitAfterNReads = param_get8(Cmd, pnr+1);
 			cmdp += 2;
 			break;
+		case 'r':
+		case 'R':
+			flags |= FLAG_RANDOM_NONCE;
+			cmdp++;
+			break;
 		case 'u':
 		case 'U':
 			param_gethex_ex(Cmd, cmdp+1, uid, &uidlen);
@@ -1202,7 +1236,7 @@ int CmdHF14AMf1kSim(const char *Cmd) {
 		PrintAndLog("Loading file and simulating. Press keyboard to abort");
 		while(!feof(f) && !ukbhit()){
 			memset(buf, 0, sizeof(buf));
-			memset(uidBuffer, 0, sizeof(uidBuffer));
+			memset(uid, 0, sizeof(uid));
 
 			if (fgets(buf, sizeof(buf), f) == NULL) {			
 				if (count > 0) break;
@@ -1211,21 +1245,21 @@ int CmdHF14AMf1kSim(const char *Cmd) {
 				fclose(f);
 				return 2;
 			}
-			if(strlen(buf) && feof(f)) break;
+			if(!strlen(buf) && feof(f)) break;
 
-			uidlen = strlen(buf);
+			uidlen = strlen(buf)-1;
 			switch(uidlen) {
-				case 20: flags = FLAG_10B_UID_IN_DATA;	break; //not complete
-				case 14: flags = FLAG_7B_UID_IN_DATA; break;
-				case  8: flags = FLAG_4B_UID_IN_DATA; break;
+				case 20: flags |= FLAG_10B_UID_IN_DATA;	break; //not complete
+				case 14: flags |= FLAG_7B_UID_IN_DATA; break;
+				case  8: flags |= FLAG_4B_UID_IN_DATA; break;
 				default: 
-					PrintAndLog("uid in file wrong length at %d",count);
+					PrintAndLog("uid in file wrong length at %d (length: %d) [%s]",count, uidlen, buf);
 					fclose(f);
 					return 2;
 			}
 
 			for (uint8_t i = 0; i < uidlen; i += 2) {
-				sscanf(&buf[i], "%02x", (unsigned int *)&uidBuffer[i / 2]);
+				sscanf(&buf[i], "%02x", (unsigned int *)&uid[i / 2]);
 			}
 			
 			PrintAndLog("mf 1k sim uid: %s, numreads:%d, flags:%d (0x%02x) - press button to abort",
@@ -1246,7 +1280,8 @@ int CmdHF14AMf1kSim(const char *Cmd) {
 			//got a response
 			nonces_t ar_resp[ATTACK_KEY_COUNT*2];
 			memcpy(ar_resp, resp.d.asBytes, sizeof(ar_resp));
-			readerAttack(ar_resp, setEmulatorMem);
+			// We can skip the standard attack if we have RANDOM_NONCE set.
+			readerAttack(ar_resp, setEmulatorMem, !(flags & FLAG_RANDOM_NONCE));
 			if ((bool)resp.arg[1]) {
 				PrintAndLog("Device button pressed - quitting");
 				fclose(f);
@@ -1278,7 +1313,8 @@ int CmdHF14AMf1kSim(const char *Cmd) {
 			if (flags & FLAG_NR_AR_ATTACK) {
 				nonces_t ar_resp[ATTACK_KEY_COUNT*2];
 				memcpy(ar_resp, resp.d.asBytes, sizeof(ar_resp));
-				readerAttack(ar_resp, setEmulatorMem);
+				// We can skip the standard attack if we have RANDOM_NONCE set.
+				readerAttack(ar_resp, setEmulatorMem, !(flags & FLAG_RANDOM_NONCE));
 			}
 		}
 	}