This is some of the scripts I used to get the flag for the CSCG2020 challenge Captcha.
The idea of the challenge is that the service requests you to solve 4 stages:
Stage 1: 1 captcha, 30 seconds
Stage 2: 3 captchas, 30 seconds
Stage 3: 10 captchas, 30 seconds
Stage 4: 100 captchas, 30 seconds
Pretty clever -- the captchas are flawwed enough that machines can solve them with a bit of work, so you basically have the opposite of a captcha: one that only a machine can solve given the time constraints.
Scripts:
get_training_data.pyscrapes tagged imagestrain.pytrains on the imagesrunner.pyruns the trained model against the website
Credit where credit is due:
- keras-ocr project