Fix smbexec.py decode error

Author: mpgn

cme/protocols/smb/smbexec.py

@@ -69,7 +69,7 @@ def execute(self, command, output=False):
         return self.__outputBuffer
 
     def output_callback(self, data):
-        self.__outputBuffer += data.decode("utf-8") 
+        self.__outputBuffer += data
 
     def execute_fileless(self, data):
         self.__output = gen_random_string(6)