X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/4c6f2d48fbe8d57c6fbd80b7e4b38acaf6355e47..03dc174036b7258baf1ef2504e810a685163137e:/client/cmdhficlass.c?ds=inline

diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c
index d9af9044..03b39021 100644
--- a/client/cmdhficlass.c
+++ b/client/cmdhficlass.c
@@ -16,7 +16,6 @@
 #include <sys/stat.h>
 #include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type
 #include "data.h"
-//#include "proxusb.h"
 #include "proxmark3.h"
 #include "ui.h"
 #include "cmdparser.h"
@@ -44,266 +43,17 @@ int xorbits_8(uint8_t val)
 
 int CmdHFiClassList(const char *Cmd)
 {
-
-	bool ShowWaitCycles = false;
-	char param = param_getchar(Cmd, 0);
-
-	if (param != 0) {
-		PrintAndLog("List data in trace buffer.");
-		PrintAndLog("Usage:  hf iclass list");
-		PrintAndLog("h - help");
-		PrintAndLog("sample: hf iclass list");
-		return 0;
-	}
-
-	uint8_t got[1920];
-	GetFromBigBuf(got,sizeof(got),0);
-	WaitForResponse(CMD_ACK,NULL);
-
-	PrintAndLog("Recorded Activity");
-	PrintAndLog("");
-	PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
-	PrintAndLog("All times are in carrier periods (1/13.56Mhz)");
-	PrintAndLog("");
-	PrintAndLog("     Start |       End | Src | Data");
-	PrintAndLog("-----------|-----------|-----|--------");
-
-	int i;
-	uint32_t first_timestamp = 0;
-	uint32_t timestamp;
-	bool tagToReader;
-	uint32_t parityBits;
-	uint8_t len;
-	uint8_t *frame;
-	uint32_t EndOfTransmissionTimestamp = 0;
-
-
-	for( i=0; i < 1900;)
-	{
-		//First 32 bits contain
-		// isResponse (1 bit)
-		// timestamp (remaining)
-		//Then paritybits
-		//Then length
-		timestamp = *((uint32_t *)(got+i));
-		parityBits = *((uint32_t *)(got+i+4));
-		len = got[i+8];
-        frame = (got+i+9);
-		uint32_t next_timestamp = (*((uint32_t *)(got+i+9))) & 0x7fffffff;
-
-		tagToReader = timestamp & 0x80000000;
-		timestamp &= 0x7fffffff;
-
-		if(i==0) {
-			first_timestamp = timestamp;
-		}
-
-        // Break and stick with current result idf buffer was not completely full
-		if (frame[0] == 0x44 && frame[1] == 0x44 && frame[2] == 0x44 && frame[3] == 0x44) break;
-
-		char line[1000] = "";
-
-		if(len)//We have some data to display
-		{
-			int j,oddparity;
-
-			for(j = 0; j < len ; j++)
-			{
-				oddparity = 0x01 ^ xorbits_8(frame[j] & 0xFF);
-
-				if (tagToReader && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
-					sprintf(line+(j*4), "%02x!  ", frame[j]);
-				} else {
-					sprintf(line+(j*4), "%02x   ", frame[j]);
-				}
-			}
-		}else
-		{
-			if (ShowWaitCycles) {
-				sprintf(line, "fdt (Frame Delay Time): %d", (next_timestamp - timestamp));
-			}
-		}
-
-		char *crc = "";
-
-		if(len > 2)
-		{
-			uint8_t b1, b2;
-			if(!tagToReader && len == 4) {
-				// Rough guess that this is a command from the reader
-				// For iClass the command byte is not part of the CRC
-					ComputeCrc14443(CRC_ICLASS, &frame[1], len-3, &b1, &b2);
-			}
-			else {
-				  // For other data.. CRC might not be applicable (UPDATE commands etc.)
-				ComputeCrc14443(CRC_ICLASS, frame, len-2, &b1, &b2);
-			}
-
-			if (b1 != frame[len-2] || b2 != frame[len-1]) {
-				crc = (tagToReader & (len < 8)) ? "" : " !crc";
-			}
-		}
-
-		i += (len + 9);
-		EndOfTransmissionTimestamp = (*((uint32_t *)(got+i))) & 0x7fffffff;
-
-		// Not implemented for iclass on the ARM-side
-		//if (!ShowWaitCycles) i += 9;
-
-		PrintAndLog(" %9d | %9d | %s | %s %s",
-			(timestamp - first_timestamp),
-			(EndOfTransmissionTimestamp - first_timestamp),
-			(len?(tagToReader ? "Tag" : "Rdr"):"   "),
-			line, crc);
-	}
+	PrintAndLog("Deprecated command, use 'hf list iclass' instead");
 	return 0;
 }
 
-int CmdHFiClassListOld(const char *Cmd)
-{
-  uint8_t got[1920];
-  GetFromBigBuf(got,sizeof(got),0);
-
-  PrintAndLog("recorded activity:");
-  PrintAndLog(" ETU     :rssi: who bytes");
-  PrintAndLog("---------+----+----+-----------");
-
-  int i = 0;
-  int prev = -1;
-
-  for (;;) {
-    if(i >= 1900) {
-      break;
-    }
-
-    bool isResponse;
-    int timestamp = *((uint32_t *)(got+i));
-    if (timestamp & 0x80000000) {
-      timestamp &= 0x7fffffff;
-      isResponse = 1;
-    } else {
-      isResponse = 0;
-    }
-
-
-    int metric = 0;
-
-    int parityBits = *((uint32_t *)(got+i+4));
-    // 4 bytes of additional information...
-    // maximum of 32 additional parity bit information
-    //
-    // TODO:
-    // at each quarter bit period we can send power level (16 levels)
-    // or each half bit period in 256 levels.
-
-
-    int len = got[i+8];
-
-    if (len > 100) {
-      break;
-    }
-    if (i + len >= 1900) {
-      break;
-    }
-
-    uint8_t *frame = (got+i+9);
-
-    // Break and stick with current result if buffer was not completely full
-    if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
-
-    char line[1000] = "";
-    int j;
-    for (j = 0; j < len; j++) {
-      int oddparity = 0x01;
-      int k;
-
-      for (k=0;k<8;k++) {
-        oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
-      }
-
-      //if((parityBits >> (len - j - 1)) & 0x01) {
-      if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
-        sprintf(line+(j*4), "%02x!  ", frame[j]);
-      }
-      else {
-        sprintf(line+(j*4), "%02x   ", frame[j]);
-      }
-    }
-
-    char *crc;
-    crc = "";
-    if (len > 2) {
-      uint8_t b1, b2;
-      for (j = 0; j < (len - 1); j++) {
-        // gives problems... search for the reason..
-        /*if(frame[j] == 0xAA) {
-          switch(frame[j+1]) {
-            case 0x01:
-              crc = "[1] Two drops close after each other";
-            break;
-            case 0x02:
-              crc = "[2] Potential SOC with a drop in second half of bitperiod";
-              break;
-            case 0x03:
-              crc = "[3] Segment Z after segment X is not possible";
-              break;
-            case 0x04:
-              crc = "[4] Parity bit of a fully received byte was wrong";
-              break;
-            default:
-              crc = "[?] Unknown error";
-              break;
-          }
-          break;
-        }*/
-      }
-
-      if (strlen(crc)==0) {
-	if(!isResponse && len == 4) {
-		// Rough guess that this is a command from the reader
-		// For iClass the command byte is not part of the CRC
-	        ComputeCrc14443(CRC_ICLASS, &frame[1], len-3, &b1, &b2);
-	}
-	else {
-		// For other data.. CRC might not be applicable (UPDATE commands etc.)
-	        ComputeCrc14443(CRC_ICLASS, frame, len-2, &b1, &b2);
-	}
-	//printf("%1x %1x",(unsigned)b1,(unsigned)b2);
-        if (b1 != frame[len-2] || b2 != frame[len-1]) {
-          crc = (isResponse & (len < 8)) ? "" : " !crc";
-        } else {
-          crc = "";
-        }
-      }
-    } else {
-      crc = ""; // SHORT
-    }
-
-    char metricString[100];
-    if (isResponse) {
-      sprintf(metricString, "%3d", metric);
-    } else {
-      strcpy(metricString, "   ");
-    }
-
-    PrintAndLog(" +%7d: %s: %s %s %s",
-      (prev < 0 ? 0 : (timestamp - prev)),
-      metricString,
-      (isResponse ? "TAG" : "   "), line, crc);
-
-    prev = timestamp;
-    i += (len + 9);
-  }
-  return 0;
-}
-
 int CmdHFiClassSnoop(const char *Cmd)
 {
   UsbCommand c = {CMD_SNOOP_ICLASS};
   SendCommand(&c);
   return 0;
 }
-
+#define NUM_CSNS 15
 int CmdHFiClassSim(const char *Cmd)
 {
   uint8_t simType = 0;
@@ -340,10 +90,10 @@ int CmdHFiClassSim(const char *Cmd)
 
 	if(simType == 2)
 	{
-		UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,63}};
+		UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}};
 		UsbCommand resp = {0};
 
-		uint8_t csns[64] = {
+		/*uint8_t csns[8 * NUM_CSNS] = {
 			 0x00,0x0B,0x0F,0xFF,0xF7,0xFF,0x12,0xE0 ,
 			 0x00,0x13,0x94,0x7e,0x76,0xff,0x12,0xe0 ,
 			 0x2a,0x99,0xac,0x79,0xec,0xff,0x12,0xe0 ,
@@ -352,8 +102,26 @@ int CmdHFiClassSim(const char *Cmd)
 			 0x4b,0x5e,0x0b,0x72,0xef,0xff,0x12,0xe0 ,
 			 0x00,0x73,0xd8,0x75,0x58,0xff,0x12,0xe0 ,
 			 0x0c,0x90,0x32,0xf3,0x5d,0xff,0x12,0xe0 };
-
-		memcpy(c.d.asBytes, csns, 64);
+*/
+      
+       uint8_t csns[8*NUM_CSNS] = {
+        0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0,
+        0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 };
+
+		memcpy(c.d.asBytes, csns, 8*NUM_CSNS);
 
 		SendCommand(&c);
 		if (!WaitForResponseTimeout(CMD_ACK, &resp, -1)) {
@@ -362,9 +130,9 @@ int CmdHFiClassSim(const char *Cmd)
 		}
 
 		uint8_t num_mac_responses  = resp.arg[1];
-		PrintAndLog("Mac responses: %d MACs obtained (should be 8)", num_mac_responses);
+		PrintAndLog("Mac responses: %d MACs obtained (should be %d)", num_mac_responses,NUM_CSNS);
 
-		size_t datalen = 8*24;
+		size_t datalen = NUM_CSNS*24;
 		/*
 		 * Now, time to dump to file. We'll use this format:
 		 * <8-byte CSN><8-byte CC><4 byte NR><4 byte MAC>....
@@ -378,7 +146,7 @@ int CmdHFiClassSim(const char *Cmd)
 		void* dump = malloc(datalen);
 		memset(dump,0,datalen);//<-- Need zeroes for the CC-field
 		uint8_t i = 0;
-		for(i = 0 ; i < 8 ; i++)
+		for(i = 0 ; i < NUM_CSNS ; i++)
 		{
 			memcpy(dump+i*24, csns+i*8,8); //CSN
 			//8 zero bytes here...
@@ -410,7 +178,11 @@ int CmdHFiClassReader(const char *Cmd)
             uint8_t * data  = resp.d.asBytes;
 
             PrintAndLog("isOk:%02x", isOK);
-
+            if( isOK == 0){
+                //Aborted
+                PrintAndLog("Quitting...");
+                return 0;
+            }
             if(isOK > 0)
             {
                 PrintAndLog("CSN: %s",sprint_hex(data,8));
@@ -495,73 +267,115 @@ int CmdHFiClassReader_Dump(const char *Cmd)
 
   }
 
+  UsbCommand resp;
+  uint8_t key_sel[8] = {0};
+  uint8_t key_sel_p[8] = { 0 };
 
   UsbCommand c = {CMD_READER_ICLASS, {0}};
-  c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE;
-
+  c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC;
   SendCommand(&c);
   
-  UsbCommand resp;
-  uint8_t key_sel[8] = {0};
-  uint8_t key_sel_p[8] = { 0 };
 
-  if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
-        uint8_t isOK    = resp.arg[0] & 0xff;
-        uint8_t * data  = resp.d.asBytes;
 
-        memcpy(CSN,data,8);
-        memcpy(CCNR,data+8,8);
+  if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+  {
+	  PrintAndLog("Command execute timeout");
+	  return 0;
+  }
 
-        PrintAndLog("isOk:%02x", isOK);
+	uint8_t isOK    = resp.arg[0] & 0xff;
+	uint8_t * data  = resp.d.asBytes;
 
-        if(isOK > 0)
-        {
-            PrintAndLog("CSN: %s",sprint_hex(CSN,8));
-        }
-        if(isOK > 1)
-        {
-            if(elite)
-            {
-                //Get the key index (hash1)
-                uint8_t key_index[8] = {0};
-
-                hash1(CSN, key_index);
-                printvar("hash1", key_index,8);
-                for(i = 0; i < 8 ; i++)
-                    key_sel[i] = keytable[key_index[i]] & 0xFF;
-                printvar("k_sel", key_sel,8);
-                //Permute from iclass format to standard format
-                permutekey_rev(key_sel,key_sel_p);
-                used_key = key_sel_p;
-            }else{
-                //Perhaps this should also be permuted to std format?
-                // Something like the code below? I have no std system
-                // to test this with /Martin
+	memcpy(CSN,data,8);
+	memcpy(CCNR,data+8,8);
 
-                //uint8_t key_sel_p[8] = { 0 };
-                //permutekey_rev(KEY,key_sel_p);
-                //used_key = key_sel_p;
+	PrintAndLog("isOk:%02x", isOK);
 
-                used_key = KEY;
+	if(isOK > 0)
+	{
+		PrintAndLog("CSN: %s",sprint_hex(CSN,8));
+	}
+	if(isOK <= 1){
+		PrintAndLog("Failed to obtain CC! Aborting");
+		return 0;
+	}
+	//Status 2 or higher
+
+	if(elite)
+	{
+		//Get the key index (hash1)
+		uint8_t key_index[8] = {0};
+
+		hash1(CSN, key_index);
+		printvar("hash1", key_index,8);
+		for(i = 0; i < 8 ; i++)
+			key_sel[i] = keytable[key_index[i]] & 0xFF;
+		PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:");
+		printvar("k_sel", key_sel,8);
+		//Permute from iclass format to standard format
+		permutekey_rev(key_sel,key_sel_p);
+		used_key = key_sel_p;
+	}else{
+		used_key = KEY;
+	}
+
+	PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:");
+	printvar("Used key",used_key,8);
+	diversifyKey(CSN,used_key, div_key);
+	PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
+	printvar("Div key", div_key, 8);
+	printvar("CC_NR:",CCNR,12);
+	doMAC(CCNR,12,div_key, MAC);
+	printvar("MAC", MAC, 4);
+
+	uint8_t iclass_data[32000] = {0};
+	uint8_t iclass_datalen = 0;
+	uint8_t iclass_blocksFailed = 0;//Set to 1 if dump was incomplete
+
+	UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
+	memcpy(d.d.asBytes, MAC, 4);
+	clearCommandBuffer();
+	SendCommand(&d);
+	PrintAndLog("Waiting for device to dump data. Press button on device and key on keyboard to abort...");
+	while (true) {
+		printf(".");
+		if (ukbhit()) {
+			getchar();
+			printf("\naborted via keyboard!\n");
+			break;
+		}
+		if(WaitForResponseTimeout(CMD_ACK,&resp,4500))
+		{
+			uint64_t dataLength = resp.arg[0];
+			iclass_blocksFailed |= resp.arg[1];
+
+			if(dataLength > 0)
+			{
+				memcpy(iclass_data, resp.d.asBytes,dataLength);
+				iclass_datalen += dataLength;
+			}else
+			{//Last transfer, datalength 0 means the dump is finished
+				PrintAndLog("Dumped %d bytes of data from tag. ", iclass_datalen);
+				if(iclass_blocksFailed)
+				{
+					PrintAndLog("OBS! Some blocks failed to be dumped correctly!");
+				}
+				if(iclass_datalen > 0)
+				{
+					char filename[100] = {0};
+					//create a preferred filename
+					snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
+							 CSN[0],CSN[1],CSN[2],CSN[3],
+							 CSN[4],CSN[5],CSN[6],CSN[7]);
+					saveFile(filename,"bin",iclass_data, iclass_datalen );
+
+				}
+				//Aaaand we're finished
+				return 0;
+			}
+		}
+	}
 
-            }
-            printvar("Used key",used_key,8);
-            diversifyKey(CSN,used_key, div_key);
-            printvar("Div key", div_key, 8);
-            printvar("CC_NR:",CCNR,12);
-            doMAC(CCNR,12,div_key, MAC);
-            printvar("MAC", MAC, 4);
-
-            UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
-            memcpy(d.d.asBytes, MAC, 4);
-            SendCommand(&d);
-
-        }else{
-            PrintAndLog("Failed to obtain CC! Aborting");
-        }
-    } else {
-        PrintAndLog("Command execute timeout");
-    }
 
   return 0;
 }
@@ -643,19 +457,64 @@ int CmdHFiClass_iso14443A_write(const char *Cmd)
   }
   return 0;
 }
+int CmdHFiClass_loclass(const char *Cmd)
+{
+	char opt = param_getchar(Cmd, 0);
+
+	if (strlen(Cmd)<1 || opt == 'h') {
+		PrintAndLog("Usage: hf iclass loclass [options]");
+		PrintAndLog("Options:");
+		PrintAndLog("h             Show this help");
+		PrintAndLog("t             Perform self-test");
+		PrintAndLog("f <filename>  Bruteforce iclass dumpfile");
+		PrintAndLog("                   An iclass dumpfile is assumed to consist of an arbitrary number of");
+		PrintAndLog("                   malicious CSNs, and their protocol responses");
+		PrintAndLog("                   The the binary format of the file is expected to be as follows: ");
+		PrintAndLog("                   <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+		PrintAndLog("                   <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+		PrintAndLog("                   <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+		PrintAndLog("                  ... totalling N*24 bytes");
+		return 0;
+	}
+	char fileName[255] = {0};
+	if(opt == 'f')
+	{
+			if(param_getstr(Cmd, 1, fileName) > 0)
+			{
+				return bruteforceFileNoKeys(fileName);
+			}else
+			{
+				PrintAndLog("You must specify a filename");
+			}
+	}
+	else if(opt == 't')
+	{
+		int errors = testCipherUtils();
+		errors += testMAC();
+		errors += doKeyTests(0);
+		errors += testElite();
+		if(errors)
+		{
+			prnlog("OBS! There were errors!!!");
+		}
+		return errors;
+	}
 
+	return 0;
+}
 
 static command_t CommandTable[] = 
 {
-  {"help",	CmdHelp,			1,	"This help"},
-  {"list",	CmdHFiClassList,	0,	"List iClass history"},
-  {"snoop",	CmdHFiClassSnoop,	0,	"Eavesdrop iClass communication"},
-  {"sim",	CmdHFiClassSim,		0,	"Simulate iClass tag"},
-  {"reader",CmdHFiClassReader,	0,	"Read an iClass tag"},
-  {"replay",CmdHFiClassReader_Replay,	0,	"Read an iClass tag via Reply Attack"},
-  {"dump",	CmdHFiClassReader_Dump,	0,		"Authenticate and Dump iClass tag"},
-  {"write",	CmdHFiClass_iso14443A_write,	0,	"Authenticate and Write iClass block"},
-  {NULL, NULL, 0, NULL}
+	{"help",	CmdHelp,			1,	"This help"},
+	{"list",	CmdHFiClassList,	0,	"[Deprecated] List iClass history"},
+	{"snoop",	CmdHFiClassSnoop,	0,	"Eavesdrop iClass communication"},
+	{"sim",	CmdHFiClassSim,		0,	"Simulate iClass tag"},
+	{"reader",CmdHFiClassReader,	0,	"Read an iClass tag"},
+	{"replay",CmdHFiClassReader_Replay,	0,	"Read an iClass tag via Reply Attack"},
+	{"dump",	CmdHFiClassReader_Dump,	0,		"Authenticate and Dump iClass tag"},
+	{"write",	CmdHFiClass_iso14443A_write,	0,	"Authenticate and Write iClass block"},
+	{"loclass",	CmdHFiClass_loclass,	1,	"Use loclass to perform bruteforce of reader attack dump"},
+	{NULL, NULL, 0, NULL}
 };
 
 int CmdHFiClass(const char *Cmd)