Hadi999 / Nxcrypt
NXcrypt - 'python backdoor' framework
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python
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NXcrypt
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NXcrypt is a polymorphic 'python backdoors' crypter written in python by Hadi Mene (h4d3s) . The output is fully undetectable .
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NXcrypt can inject malicious python file into a normal file with multi-threading system .
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Run it with superuser's permissions .
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NXcrypt output is Fully undetectable .
Backdooring Module :
Encryption Module
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 .
Test with Virustotal
Before :
SHA256: e2acceb6158cf406669ab828d338982411a0e5c5876c2f2783e247b3e01c2163 File name: facebook.py Detection ratio: 2 / 54
After :
SHA256: 362a4b19d53d1a8f2b91491b47dba28923dfec2d90784961c46213bdadc80add File name: facebook_encrypted.py Detection ratio: 0 / 55
Credits
All Credits go to Suspicious Shell Activity team
Video Tutorial
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