403Bypasser is a next-generation security tool written in Go, designed to automate the evasion of 403 Forbidden and 401 Unauthorized restrictions during Red Team operations and Bug Bounty hunting.

Unlike standard fuzzers, 403Bypasser employs offensive header manipulation (e.g., X-Forwarded-For, X-Original-URL) and aggressive path normalization techniques to bypass strictly configured Access Control Mechanisms.

Key Features:

• Smart Calibration: Features a built-in algorithm that measures 404 and Root page sizes to effectively filter out noise and eliminate False Positives.
• Deep Scan Mode: Performs nested fuzzing for comprehensive coverage.
• Protocol Intelligence: Automatically handles protocol checks and connection stability.
• High Performance: Written in Go for concurrency and speed.

Source Code & Repository: https://github.com/alperenkesk/403Bypasser