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Naive Proof of Concept Crypter for GNU/Linux ELF64

pocrypt 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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PoCrypt. Proof Of Concept Crypter
-------------------------------------

This repository contains the code for a simple Proof of Code to demonstrate how
to crypt parts of a binary. The modified binary is extended with a small function 
that decrypts the secured parts of the file at run-time to enable its execution.

Still under investigation, but it looks like this works just like this thanks to
the naive XOR encoding. A more secure cryptographic algorithm won't work... If anybody
tries, please let me know.

HOW TO TRY IT
--------------------
Compile with 'make'

Try to run the target binary. it will crash as it has not been crypted. The application
tried to decrypt a code that has not been encrypted. The application will dump the content
of the memory in the .secure segment

Then encrypt the binary with a command like this

./pocrypter PASSWORD .secure ./target

Now you can run again the target binary and verify that the secure function gets executed

./target PASSWORD

TODO
--------------------
Add a flag to know if the binary is encoded or no and avoid the crash on non-encoded binaries

pocrypt

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