Nxcrypt - Python Backdoor Framework

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 .


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


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 .