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competition-browser-persistence

Inspect browser storage and caches in a CTF sandbox to explain changes in authentication, page rendering, or requests. Compare clean and modified states, then document the smallest sequence that reproduces the relevant behavior.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

원문원문 설명 보기

Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for browser cookies, localStorage, sessionStorage, IndexedDB, Cache Storage, service workers, offline caches, and client-side session persistence. Use when the user asks to inspect browser state, replay cached auth or session behavior, explain why a page behaves differently after load, or trace how stored client state changes requests, rendering, or access. Use only after `$ctf-sandbox-orchestrator` has already established sandbox assumptions and routed here.

zhaoxuya520/reverse-skill
설치 방법 보기

이럴 때 유용합니다

  • Investigating login behavior affected by stored browser state
  • Explaining page differences caused by caches
  • Reproducing behavior with clean and modified storage
  • Tracing service worker effects on offline behavior

포함된 파일(3)

  • SKILL.md3.1 KB
  • agents/openai.yaml407 B
  • references/browser-persistence.md1.1 KB

SKILL.md(원문)

설치하기 전에 에이전트에게 전달되는 지시 내용을 확인할 수 있습니다.

Competition Browser Persistence

Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.

Use this skill when the decisive branch lives in browser-held state rather than only in visible HTML or backend source.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Identify the active persistence surface first: cookie jar, localStorage, sessionStorage, IndexedDB, Cache Storage, or service worker.
  2. Record origin, scope, domain, path, expiry, and key names before mutating state.
  3. Tie stored state to one concrete effect: request header, rendered branch, cached response, offline behavior, or hidden route access.
  4. Separate boot-time state from runtime-mutated state.
  5. Reproduce the smallest stateful sequence that reaches the decisive branch.

Workflow

1. Map Browser State Surfaces

  • Inspect cookies, storage buckets, service worker registrations, cache entries, and transient globals exposed during boot.
  • Record which origin, host, route, or feature flag each state item actually applies to.
  • Keep auth tokens, refresh material, CSRF state, cached responses, and feature toggles in separate evidence blocks.

2. Tie State To Runtime Behavior

  • Show how stored state becomes request headers, role derivation, route visibility, cached API data, or offline fallback behavior.
  • Compare clean-state and mutated-state runs with one variable changed at a time.
  • Distinguish UI-only state from backend-accepted state.

3. Reduce To The Decisive Persistence Chain

  • Compress the result to the smallest chain: initial page or login -> state persisted -> subsequent request or render branch -> resulting capability.
  • Keep extracted storage, service worker scripts, and replay steps tied to the same origin and route.
  • If the problem broadens into general web routing or worker behavior outside browser persistence, switch back to the broader web-runtime skill.

Read This Reference

  • Load references/browser-persistence.md for the browser-state checklist, service-worker checklist, and evidence packaging.

What To Preserve

  • Cookie attributes, storage keys, database names, cache keys, service worker scopes, and origin boundaries
  • The exact request or render effect caused by each decisive state item
  • Clean-state vs mutated-state reproduction steps for the smallest working path

리뷰

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