hofill / aes-ctf-tool

AES CTF Tool

This is an all-in-one solution designed to automate various block cipher (e.g. AES) challenges typically encountered in Capture The Flag (CTF) competitions.

It has the following features:

• Detect Block Cipher Mode used
• Detect Padding Method
• Detect IV Reuse
• Detect Block Size
• Attack using common attacks (e.g. Chosen Plaintext or Padding Oracle)
• Easily extendible

Usage

A file similar to main.py must be created. init_server and encrypt must be implemented.

init_server

This method must return an object/process/handle that can be used to encrypt/decrypt data.

encrypt

This method must be implemented such that it uses the process returned from init_server and encrypts it. It must return a hex string that is the result of the encryption.

decrypt

This method is not necessary to be implemented, unless you're running a Padding Oracle attack.

After these methods have been implemented, you start the detector by running begin() on the newly created instance of BCDetector