Individual skill
hunt-write-gap
Hunt read-protected write-gaping endpoints. PATCH/POST/DELETE without authorization while GET is protected. Agnostic: Supabase, Firebase, REST, GraphQL.
redteam/hunt-write-gap/SKILL.md
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- Last checked
- Nov 9, 2026
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- Repository last updated
- Nov 7, 2026
- License
- MIT
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- bug-bounty Repository topic
- cloud-security Repository topic
- firebase-hacking Repository topic
- hermes-agent Repository topic
- jwt-attacks Repository topic
- offensive-security Repository topic
- penetration-testing Repository topic
- reconnaissance Repository topic
- red-team Repository topic
- security-automation Repository topic
- write-gap Declared skill tag
- hunt Declared skill tag
- redteam Declared skill tag
- engineering Derived category
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## When to Use
You have authenticated access to a target and can READ your own data (profile, settings, records), but need to test if you can MODIFY data beyond your authorization level. This is the #1 pattern in Supabase-backed SaaS and increasingly common in Firebase, custom REST APIs, and GraphQL backends.
**The pattern**: `GET /resource` returns only your data (RLS/auth working). `PATCH /resource` lets you change anything including tier, role, balance, and subscription status.
---
## Phase 1 — Identify Writeable Endpoints
From prior recon (schema enumeration, JS bundle analysis), build a list of endpoints that accept write methods:
```bash
TARGET="https://api.target.com"