At WithSecure we often encounter binary payloads that are generated from compiled Python. These are usually generated with tools such as py2exe or PyInstaller to create a Windows executable.
Occasionally, the main Python file, which contains the main logic for the program, can’t be decompiled. Usually, this is because it’s missing the magic bytes for the Python version number within the Python bytecodes. The “prepend” option in this script can be used to overcome this. T...
As there are no .py file, we need to focus on the magic number. Before starting to search about magic numbers, I tried compiling the .pyc file with various version’s of python interpreter ( an insane idea ), but all those versions (1,2,2.1,2.2,2.5,2.7,3,3.1..etc) gave the same...