Debugging Meterpreter(s)

Windows C Meterpreter

#define DEBUGTRACE 1

Add that to whatever file you would like to debug, then use dprintf([format string]) For more information, see the code responsible for it in common.h by searching for the DEBUGTRACE macro.

Python Meterpreter

When setting up the handler for the connection in msfconsole: set PythonMeterpreterDebug True