BaseCrack
Decoder For Base Encoding Schemes
BaseCrack is a tool written in Python that can decode all alphanumeric base encoding schemes. This tool can accept single user input, multiple inputs from a file, input from argument, multi-encoded bases, bases in image EXIF data, bases on images with OCR and decode them incredibly fast.
For a basic demo, try the Web Interface that uses BaseCrack's API.
Fun Fact!
I initially made this after being fed up with lame CTF challenges with multi-encoded bases. Now some of them started doing that in Steganography challenges so I automated that too smh!
Table of Contents
Features
- Decode multi-encoded bases of any pattern.
- Decode bases in image EXIF data.
- Decode bases on images with OCR detection.
- Can decode multiple base encodings from a file.
- Generate a wordlist/output with the decoded bases.
- Predicts the type of encoding scheme.
Supported Encoding Schemes
Installation
$ git clone https://github.com/mufeedvh/basecrack.git
$ cd basecrack
$ pip3 install -r requirements.txt
$ python3 basecrack.py -h
NOTE: Python3 is recommended to use!
Linux:
$ sudo apt-get update
$ sudo apt-get install tesseract-ocr libtesseract-dev
MacOS:
$ brew install tesseract
Windows:
OCR Detection is implemented with Tesseract and Windows requires installation of the Tesseract executable. Installing the dependencies from requirements.txt which includes pytesseract should install it. If in case it doesn't, here's how you can set it up:
- First check whether you have it installed or not in the
Program Files/Program Files (x86)under theTesseract-OCRdirectory. - If there is, give that path in the
config.jsonand you're all set! If you don't have it, install it from here and set the path inconfig.json.
Tesseract Docs: https://tesseract-ocr.github.io/
NOTE: I haven't completely tested this tool on Windows so if you stumble upon any issues, please open an issue.
Usage
Get a list of all the arguments:
python3 basecrack.py -h
To decode a single base encoding from user input:
python3 basecrack.py
To decode a single base encoding from argument (-b/--base):
python3 basecrack.py -b SGVsbG8gV29ybGQh
To decode multiple base encodings from a file (-f/--file):
python3 basecrack.py -f file.txt
Magic Mode: To decode multi-encoded base of any pattern (-m/--magic):
python3 basecrack.py --magic
To input an image for EXIF/OCR detection mode (-i/--image):
python3 basecrack.py -i image.jpg (--exif/--ocr)
EXIF Data: To decode bases in image EXIF data (-e/--exif):
python basecrack.py -i image.jpg --exif
OCR Base Detection: To decode bases on image with OCR detection (-c/--ocr):
python basecrack.py -i image.jpg --ocr
To generate a wordlist/output with the decoded bases (-o/--output):
python basecrack.py -f file.txt -o output-wordlist.txt
Magic Mode
Now you can decode multi-encoded bases of any pattern in a single shot.
Have you ever stumbled upon that one lame CTF challenge that gives you an encoded string which is just encoded over and over with Base64, Base91, Base85 and so on? Just give that to BaseCrack and you're done with it! ;)
Want to test it out? Just give it this input:
IX(Fp@nNG6ef<,*TFE]IT^zdINAb9EVbp,e
<*[Nv+T8
and see for yourself! :)
BaseCrack API
BaseCrack can now be used as a library! Just import the BaseCrack() class and call the decode() function.
See API.
API
Want to use BaseCrack as a library? We got you covered!
Just put basecrack in your project's directory and you're ready to go!
Example:
# import the BaseCrack class from basecrack.py
from basecrack import BaseCrack
# calling the api function decode() with the encoded base
result = BaseCrack().decode('c3BhZ2hldHRp')
# printing the output
"""
result is tuple where:
result[0] = DECODED STRING
result[1] = ENCODING SCHEME
"""
print('Decoded String: {}'.format(result[0]))
print('Encoding Scheme: {}'.format(result[1]))
Output:
Decoded String: spaghetti
Encoding Scheme: Base64
Contribution
Ways to contribute
- Suggest a feature
- Report a bug
- Fix something and open a pull request
- Help me document the code
- Spread the word
Before you open a PR, make sure everything's good by running the tests:
Unit Tests: (Thanks @FavasM)
python3 -m unittest discover -v -s tests
License
Licensed under the MIT License, see LICENSE for more information.
Liked the project?
Support the author by buying him a coffee!
And to avoid this mistake is to give "!" with "", but then it will not be decoded properly
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