Fixed error with mifare_autopwn where keys were reversed, see http://www.proxmark.org/forum/viewtopic.php?pid=8494#p8494

client/scripting.c

@@ -151,7 +151,11 @@ static int l_nonce2key(lua_State *L){
     //Push the retval on the stack
     lua_pushinteger(L,retval);
     //Push the key onto the stack
-    lua_pushlstring(L,(const char *) &key,sizeof(key));
+	uint8_t dest_key[8];
+	num_to_bytes(key,sizeof(dest_key),&dest_key);
+
+	//printf("Pushing to lua stack: %012"llx"\n",key);
+	lua_pushlstring(L,(const char *) &dest_key,sizeof(dest_key));
 
     return 2; //Two return values
 }
@@ -173,9 +177,14 @@ static int l_foobar(lua_State *L)
     lua_settop(L, 0);
     printf("Arguments discarded, stack now contains %d elements", lua_gettop(L));
     UsbCommand response =  {CMD_MIFARE_READBL, {1337, 1338, 1339}};
-    printf("Now returning a UsbCommand as a string");
-    lua_pushlstring(L,(const char *)&response,sizeof(UsbCommand));
-    return 1;
+	printf("Now returning a uint64_t as a string");
+	uint64_t x = 0xDEADBEEF;
+	uint8_t destination[8];
+	num_to_bytes(x,sizeof(x),&destination);
+	lua_pushlstring(L,(const char *)&x,sizeof(x));
+	lua_pushlstring(L,(const char *)&destination,sizeof(destination));
+
+	return 2;
 }
 
 

client/scripts/mifare_autopwn.lua

@@ -171,7 +171,12 @@ function main(args)
 			local key, cnt
 			res,err = mfcrack()
 			if not res then return oops(err) end
-			_,key = bin.unpack("H6",res)
+			-- The key is actually 8 bytes, so a 
+			-- 6-byte key is sent as 00XXXXXX
+			-- This means we unpack it as first
+			-- two bytes, then six bytes actual key data
+			-- We can discard first and second return values
+			_,_,key = bin.unpack("H2H6",res)
 			print("Key ", key)
 
 			-- Use nested attack
@@ -182,5 +187,6 @@ function main(args)
 	end
 end
 
+end
 -- Call the main 
 main(args)