X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ac14bee321a52c588038b02bfe69d208a31a70ba..d13dee9046acdaa599e224f0a8546054eb818c6e:/client/cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index b4450d54..1fbeff4a 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
-// Copyright (C) 2011 Merlok
+// Copyright (C) 2011,2012 Merlok
 //
 // 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
@@ -37,7 +37,6 @@ start:
 	// message
 	printf("-------------------------------------------------------------------------\n");
 	printf("Executing command. It may take up to 30 min.\n");
-	printf("Press the key on proxmark3 device to abort proxmark3.\n");
 	printf("Press the key on the proxmark3 device to abort both proxmark3 and client.\n");
 	printf("-------------------------------------------------------------------------\n");
 	
@@ -1542,6 +1541,121 @@ int CmdHF14AMfCSave(const char *Cmd) {
 	}
 }
 
+int CmdHF14AMfSniff(const char *Cmd){
+	// params
+	bool wantLogToFile = 0;
+	bool wantDecrypt = 0;
+	//bool wantSaveToEml = 0; TODO
+	bool wantSaveToEmlFile = 0;
+
+	//var 
+	int res = 0;
+	int len = 0;
+	int blockLen = 0;
+	int num = 0;
+	int pckNum = 0;
+	uint8_t uid[8];
+	uint8_t atqa[2];
+	uint8_t sak;
+	bool isTag;
+	uint32_t parity;
+	uint8_t buf[3000];
+	uint8_t * bufPtr = buf;
+	memset(buf, 0x00, 3000);
+	
+	if (param_getchar(Cmd, 0) == 'h') {
+		PrintAndLog("It continuously get data from the field and saves it to: log, emulator, emulator file.");
+		PrintAndLog("You can specify:");
+		PrintAndLog("    l - save encrypted sequence to logfile `uid.log`");
+		PrintAndLog("    d - decrypt sequence and put it to log file `uid.log`");
+		PrintAndLog(" n/a   e - decrypt sequence, collect read and write commands and save the result of the sequence to emulator memory");
+		PrintAndLog("    r - decrypt sequence, collect read and write commands and save the result of the sequence to emulator dump file `uid.eml`");
+		PrintAndLog("Usage:  hf mf sniff [l][d][e][r]");
+		PrintAndLog("  sample: hf mf sniff l d e");
+		return 0;
+	}	
+	
+	for (int i = 0; i < 4; i++) {
+		char ctmp = param_getchar(Cmd, i);
+		if (ctmp == 'l' || ctmp == 'L') wantLogToFile = true;
+		if (ctmp == 'd' || ctmp == 'D') wantDecrypt = true;
+		//if (ctmp == 'e' || ctmp == 'E') wantSaveToEml = true; TODO
+		if (ctmp == 'f' || ctmp == 'F') wantSaveToEmlFile = true;
+	}
+	
+	printf("-------------------------------------------------------------------------\n");
+	printf("Executing command. \n");
+	printf("Press the key on the proxmark3 device to abort both proxmark3 and client.\n");
+	printf("Press the key on pc keyboard to abort the client.\n");
+	printf("-------------------------------------------------------------------------\n");
+
+  UsbCommand c = {CMD_MIFARE_SNIFFER, {0, 0, 0}};
+  SendCommand(&c);
+
+	// wait cycle
+	while (true) {
+		printf(".");
+		fflush(stdout);
+		if (ukbhit()) {
+			getchar();
+			printf("\naborted via keyboard!\n");
+			break;
+		}
+		
+		UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 2000);
+		if (resp != NULL) {
+			res = resp->arg[0] & 0xff;
+			len = resp->arg[1];
+			num = resp->arg[2];
+			
+			if (res == 0) return 0;
+			if (res == 1) {
+				if (num ==0) {
+					bufPtr = buf;
+					memset(buf, 0x00, 3000);
+				}
+				memcpy(bufPtr, resp->d.asBytes, len);
+				bufPtr += len;
+				pckNum++;
+			}
+			if (res == 2) {
+				blockLen = bufPtr - buf;
+				bufPtr = buf;
+				printf(">\n");
+				PrintAndLog("received trace len: %d packages: %d", blockLen, pckNum);
+				num = 0;
+				while (bufPtr - buf + 9 < blockLen) {
+				  isTag = bufPtr[3] & 0x80 ? true:false;
+					bufPtr += 4;
+					parity = *((uint32_t *)(bufPtr));
+					bufPtr += 4;
+					len = bufPtr[0];
+					bufPtr++;
+					if ((len == 14) && (bufPtr[0] = 0xff) && (bufPtr[1] = 0xff)) {
+						memcpy(uid, bufPtr + 2, 7);
+						memcpy(atqa, bufPtr + 2 + 7, 2);
+						sak = bufPtr[11];
+						
+						PrintAndLog("tag select uid:%s atqa:%02x %02x sak:0x%02x", sprint_hex(uid, 7), atqa[0], atqa[1], sak);
+						if (wantLogToFile) {
+							FillFileNameByUID(logHexFileName, uid, ".log", 7);
+							AddLogCurrentDT(logHexFileName);
+						}						
+						if (wantDecrypt) mfTraceInit(uid, atqa, sak, wantSaveToEmlFile);
+					} else {
+						PrintAndLog("%s(%d):%s", isTag ? "TAG":"RDR", num, sprint_hex(bufPtr, len));
+						if (wantLogToFile) AddLogHex(logHexFileName, isTag ? "TAG: ":"RDR: ", bufPtr, len);
+						if (wantDecrypt) mfTraceDecode(bufPtr, len, parity, wantSaveToEmlFile);
+					}
+					bufPtr += len;
+					num++;
+				}
+			}
+		} // resp not NILL
+	} // while (true)
+  return 0;
+}
+
 static command_t CommandTable[] =
 {
   {"help",		CmdHelp,						1, "This help"},
@@ -1554,6 +1668,7 @@ static command_t CommandTable[] =
   {"chk",			CmdHF14AMfChk,			0, "Test block keys"},
   {"mifare",	CmdHF14AMifare,			0, "Read parity error messages. param - <used card nonce>"},
   {"nested",	CmdHF14AMfNested,		0, "Test nested authentication"},
+  {"sniff",		CmdHF14AMfSniff,		0, "Sniff card-reader communication"},
   {"sim",			CmdHF14AMf1kSim,		0, "Simulate MIFARE card"},
   {"eclr",		CmdHF14AMfEClear,		0, "Clear simulator memory block"},
   {"eget",		CmdHF14AMfEGet,			0, "Get simulator memory block"},