NXcrypt

  • NXcrypt is a polymorphic ‘python backdoors’ crypter written in python by Hadi Mene (h4d3s) . The output is fully undetectable.
  • NXcrypt can inject malicious python file into a normal file with multi-threading system.
  • Run it with superuser’s permissions.
  • NXcrypt output is Fully undetectable.

How it work ?

  • Encryption module:
  • NXcrypt add some junkcode.
  • NXcrypt use a python internal module ‘py_compile’ who compile the code into bytecode to a .pyc file .
  • NXcrypt convert .pyc file into normal .py file .
  • And in this way we can obfuscate the code
  • The md5sum will change too
  • Injection module :
  • it inject a malicious python file into a normal file with multi-threading system .

Installation

git clone https://github.com/Hadi999/NXcrypt.git

Usage :

  • sudo ./NXcrypt.py –file=backdoor.py –output=output_backdoor.py # encrypt backdoor.py and output file is output_backdoor.py
  • sudo ./NXcrypt.py –file=shell.py # encrypt shell.py and default output file is backdoor.py but you can edit it in source code
  • sudo ./NXcrypt.py –help # NXcrypt help
  • sudo ./NXcrypt.py –backdoor-file=payload.py –file=test.py –output=hacked.py # inject payload.py with test.py into hacked.py with multi-threading system

Source: Github