0xBugatti

0xBugatti / 400OK

Public

When "403 Forbidden" stands between you and your target, 400OK breaks through with 22 bypass techniques and 4,400+ payloads.

403 403-bypass bugbounty evasion htb
22
1
69% credibility
Found Feb 01, 2026 at 18 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
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AI Summary

400OK is a security testing tool that automates various creative techniques to check if 'forbidden' web pages can be accessed differently.

How It Works

1
🔍 Discover 400OK

You learn about 400OK, a handy tool that helps test ways around website 'access denied' blocks.

2
💻 Get it ready

Download the tool and set it up on your computer so it's easy to use.

3
🌐 Enter the website

Type in the web address that's blocking you, like a page saying 'forbidden'.

4
🛠️ Choose test tricks

Pick simple tricks like changing words or paths to try sneaking past the block.

5
🚀 Run the tests

Hit start and watch as it quickly tries dozens of clever ways to get through.

6
📊 Review results

See colorful reports of what worked, with success codes and different responses.

✅ Find breakthroughs

Celebrate discovering open doors or weak spots you can explore further!

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Star Growth

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AI-Generated Review

What is 400OK?

400OK is a Go CLI tool for smashing through 403 Forbidden errors using 22 bypass techniques and 4,400+ payloads. When 403 forbidden hits during web scraping, API calls like headbucket operations, or VPN-blocked requests, it runs concurrent modified HTTP requests—verb tampering, header swaps, path encoding, IPv6 tricks—to detect breakthroughs via status codes and content length diffs. Output includes colored tables, summaries, JSON exports, and auto-calibration baselines.

Why is it gaining traction?

It bundles pro moves like host header manipulation, Unicode overlongs, WAF payloads, and Wayback snapshot checks into one fast runner with concurrency controls, proxy support, and rate-limit detection—beating manual curl chains or basic scripts. Devs hook on the "when 403 error occurs" firepower without building from scratch, plus unique filtering cuts noise from repetitive responses.

Who should use this?

Pentesters auditing WAFs for 403 when web scraping or when 403 forbidden error occurs on internal paths. Bug bounty hunters chaining bypasses on stubborn endpoints, and ops teams debugging error 400ok blocks during API integrations or GitHub Actions deploys.

Verdict

Grab it for targeted 403 bypass testing—solid CLI ergonomics make it practical despite 20 stars and 0.7% credibility score signaling early maturity. Pair with manual verification; lacks broad tests but shines in niche "when 403 comes" hunts.

(198 words)

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