CAPTCHaBreak

Showcase of an attack on CAPTCHaStar.

RUNNING:

1. Close all Chrome windows and re-run it with --allow-file-access-from-files flag
2. Open star.html
3. Open console, execute find_min_fill_ratio()

options:

• to load some other captcha, use the function load(), e.g.:

      load("getter3.php");  // "getter.php", "getter1.php", ... "getter19.php" will work

• you can also specify the total number of bins per row/column:

      find_min_fill_ratio(30);   // default is 20