URL Fuzzer 401/403 Bypass

Fuzz the URL with all available ASCII characters to identify parser inconsistencies. Based on the work of Rafael da Costa Santos (https://rafa.hashnode.dev/exploiting-http-parsers-inconsistencies) and Orange Tsai (https://youtu.be/28xWcRegncw?si=t6BcScfQsz-2wFap).

Demo

https://github.com/akenofu/URL_Fuzzer_403_Bypass/assets/44447755/611dc8bb-e538-4984-b91d-029f353d33b7

How it works

Inserts all ASCII characters (0-255) at pre-defined insertion points in the URL. For the path /admin/dashboard, the following transformations are done:

• 0x85/admin/dashboard
• /0x85/admin0x85/dashboard
• /admin0x85/dashboard
• /admin/dashboard0x85
• /admin/dashboard/0x85/

etc...