Chepy - A Python Lib/Cli Equivalent Of The Awesome CyberChef Tool. - Hacking Land

Chepy is a python library with a handy cli that is aimed to mirror some of the capabilities of CyberChef. A reasonable amount of effort was put behind Chepy to make it compatible to the various functionalities that CyberChef offers, all in a pure Pythonic manner. There are some key advantages and disadvantages that Chepy has over Cyberchef. The Cyberchef concept of stacking different modules is kept alive in Chepy.
There is still a long way to go for Chepy as it does not offer every single ability of Cyberchef.

Docs
Refer to the docs for full usage information

Example
For all usage and examples, see the docs.
Chepy has a stacking mechanism similar to Cyberchef. For example, this in Cyberchef:

This is equivalent to

from chepy import Chepy
 
 file_path = "/tmp/demo/encoding"
 
 print(
     Chepy(file_path)
     .load_file()
     .reverse()
     .rot_13()
     .base64_decode()
     .base32_decode()
     .hexdump_to_str()
     .o
 )

Chepy vs Cyberchef

Advantages

Chepy is pure python with a supporting and accessible python api
Chepy has a CLI
Chepy CLI has full autocompletion.
Supports pe, elf, and other various file format specific parsing.
Extendable via plugins
Infinitely scalable as it can leverage the full Python library.
Chepy can interface with the full Cyberchef web app to a certain degree. It is easy to move from Chepy to Cyberchef if need be.
The Chepy python library is significantly faster than the Cyberchef Node library.
Works with HTTP/S requests without CORS issues.

Disadvantages

Chepy is not a web app (at least for now).
Chepy does not offer every single thing that Cyberchef does
Chepy does not have the magic method (at the moment)

Installation
Chepy can be installed in a few ways.

Pypi

pip3 install chepy
 # optionally with extra requirements
 pip3 install chepy[extras]

Git

git clone --recursive https://github.com/securisec/chepy.git
 cd chepy
 pip3 install -e .
 # I use -e here so that if I update later with git pull, I dont have it install it again (unless dependencies have changed)

Docker

docker run --rm -ti -v $PWD:/data securisec/chepy "some string" [somefile, "another string"]

Standalone binary
One can build Chepy to be a standalone binary also. This includes packaging all the dependencies together.

git clone https://github.com/securisec/chepy.git
 cd chepy
 pip install .
 pip install pyinstaller
 pyinstaller cli.py --name chepy --onefile

The binary will be in the dist/ folder.

Plugins
Check here for plugins docs

.. toctree::     :maxdepth: 3     :caption: Contents:       usage.md     examples.md     cli.rst     chepy.md     core.md     modules.rst     extras.rst     plugins.md     pullrequest.md     config.md     faq.md      Indices and tables  ==================    * :ref:`genindex`  * :ref:`modindex`  * :ref:`search`

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