Cracks the Captcha at VIT University's Academics Portal
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Blog Post
JavaScript Js parser refactor Sep 20, 2018
Python Added bitmaps script Sep 20, 2018
.gitignore Added gitignore, moved README Sep 20, 2018
LICENSE.MD Create LICENSE.MD Aug 10, 2017 Update Jan 4, 2019

Captcha Cracker

Holds the source for the algorithm that used to crack the captcha at VIT University's Academic Portal. Now, they use ReCaptcha by Google. This is how it looked like, earlier.

Related Chrome Extension

Maintained in a seperate repository

Related Blog Post

Present on the DEV website.

Running the Python Script

  • Install the PIL Library(Pillow)
pip install pillow
  • Enter the Python Directory
cd Python
  • Run the command for the test image
python algorithm/
  • For a performance measure, run
  • For the preprocessing, run the following after deleting all folders execpt downloaded captchas
cd Python/preprocessing
  • Pick a character from the best ones as per the alphanumeric set and rename it after placing in library-chars.
  • Run the following to generate your bitmaps