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yaklang/401-403-우회-기법

401/403 우회 플레이북입니다. 관리자 패널, API 엔드포인트 또는 제한된 경로에서 접근 거부 응답을 마주쳤을 때 사용합니다. 경로 조작, HTTP 메서드 변조, 헤더 주입, 프로토콜 다운그레이드 및 자동화된 우회 도구를 다룹니다.

401-403-우회-기법란 무엇인가요?

이 스킬은 웹 애플리케이션 보안 테스트 중 401(Unauthorized) 및 403(Forbidden) 오류를 우회해야 할 때 사용하는 종합 플레이북입니다. 관리자 패널, API 엔드포인트, 또는 접근이 제한된 경로에서 권한 부족으로 인해 차단된 경우 이 스킬을 활용할 수 있습니다. 주요 우회 기법으로는 경로 조작(예: URL 인코딩, 경로 탐색), HTTP 메서드 변조(GET을 POST로 변경 등), 헤더 주입(X-Forwarded-For, X-Original-URL 등), 프로토콜 다운그레이드(HTTPS를 HTTP로), 그리고 자동화된 도구(예: 403bypasser, bypass-403) 사용을 다룹니다. 이 스킬은 yaklang 생태계에서 사용되며, 보안 연구원이나 침투 테스터가 접근 제어 우회를 체계적으로 시도할 수 있도록 지원합니다.

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npx skills add https://github.com/yaklang/hack-skills/tree/main/skills/401-403-bypass-techniques

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문서

401-403-우회-기법은(는) 무엇을 하나요?

401/403 우회 플레이북입니다. 관리자 패널, API 엔드포인트 또는 제한된 경로에서 접근 거부 응답을 마주쳤을 때 사용합니다. 경로 조작, HTTP 메서드 변조, 헤더 주입, 프로토콜 다운그레이드 및 자동화된 우회 도구를 다룹니다.

개요

이 플레이북은 401(Unauthorized) 또는 403(Forbidden) HTTP 상태 코드를 우회하기 위한 다양한 기술을 제공합니다.

필수 조건

  • yak 바이너리 설치
  • 대상 URL 또는 엔드포인트 정보

사용법

yak run bypass-403.yak --target https://example.com/admin

기술 목록

1. 경로 조작

  • URL 인코딩 (%2e → .)
  • 경로 탐색 (..;/ 또는 ;/)
  • 대소문자 변조 (/AdMin)
  • 와일드카드 사용 (*)

2. HTTP 메서드 변조

  • GET → POST
  • HEAD 메서드 사용
  • OPTIONS 메서드 사용
  • 사용자 정의 메서드 (XMETHOD)

3. 헤더 주입

  • X-Forwarded-For: 127.0.0.1
  • X-Original-URL: /admin
  • X-Rewrite-URL: /admin
  • X-Custom-IP-Authorization: 127.0.0.1
  • Referer: https://example.com/admin

4. 프로토콜 다운그레이드

  • https:// → http://

5. 자동화 도구

예시

# 기본 우회 시도
yak run bypass-403.yak --target https://target.com/admin --method all

# 특정 헤더만 사용
yak run bypass-403.yak --target https://target.com/admin --headers X-Forwarded-For

참고

  • 항상 합법적인 권한 하에 테스트를 수행하십시오.
  • 이 플레이북은 교육 및 승인된 보안 테스트 목적으로만 사용해야 합니다.

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

yaklang/active-directory-acl-abuse

Active Directory ACL abuse playbook. Use when exploiting misconfigured AD permissions including GenericAll, WriteDACL, DCSync rights, shadow credentials, LAPS reading, GPO abuse, and BloodHound-guided attack paths.

yaklang/active-directory-certificate-services

AD Certificate Services attack playbook. Use when targeting misconfigured AD CS for privilege escalation via ESC1-ESC13 template abuse, NTLM relay to enrollment, CA officer abuse, and certificate-based persistence.

yaklang/active-directory-kerberos-attacks

Kerberos attack playbook for Active Directory. Use when targeting AD authentication via AS-REP roasting, Kerberoasting, golden/silver/diamond tickets, delegation abuse, or pass-the-ticket attacks.

yaklang/ai-ml-security

AI/ML security playbook. Use when assessing model supply chain attacks (pickle RCE, poisoned weights), adversarial examples, model poisoning, model stealing, data privacy attacks (membership inference, model inversion), and autonomous agent security risks.

yaklang/android-pentesting-tricks

Android pentesting playbook. Use when testing Android applications for SSL pinning bypass, exported component abuse, WebView vulnerabilities, intent redirection, root detection bypass, tapjacking, and backup extraction during authorized mobile security assessments.

yaklang/anti-debugging-techniques

Anti-debugging detection and bypass playbook. Use when reversing protected binaries that detect debuggers via ptrace, PEB flags, timing checks, or signal/exception handlers on Linux and Windows.

yaklang/api-auth-and-jwt-abuse

API authentication and JWT abuse playbook. Use when testing bearer tokens, API keys, claim trust, header spoofing, rate limits, and API auth boundary weaknesses.

yaklang/api-authorization-and-bola

API authorization and BOLA testing playbook. Use when APIs expose object identifiers, nested resources, hidden writable fields, or weak function-level authorization.

yaklang/api-recon-and-docs

API reconnaissance and documentation review playbook. Use when discovering endpoints, schemas, versions, OpenAPI specs, hidden docs, and surface area for API testing.

yaklang/api-sec

Entry P1 category router for API security. Use when choosing between API recon, authorization, token abuse, and hidden-parameter workflows before any deeper API topic skill.

yaklang/arbitrary-write-to-rce

Arbitrary write to RCE playbook. Use when you have an arbitrary write primitive (from heap exploitation, format string, or OOB write) and need to convert it into code execution by targeting GOT, hooks, _IO_FILE vtable, exit_funcs, TLS_dtor_list, modprobe_path, .fini_array, or C++ vtables.

yaklang/authbypass-authentication-flaws

Authentication bypass testing playbook. Use when assessing login flows, password reset logic, account recovery, MFA bypass, token predictability, brute-force resistance, and session boundary flaws.

yaklang/auth-sec

Entry P1 category router for authentication and authorization. Use when testing login flows, sessions, object authorization, JWT, OAuth, CORS, CSRF, and enterprise SSO weaknesses before any deeper auth topic skill.

yaklang/binary-protection-bypass

Binary protection bypass playbook. Use when identifying and bypassing ASLR, PIE, NX/DEP, stack canary, RELRO, FORTIFY_SOURCE, CET, and MTE protections in ELF binaries to enable exploitation.

yaklang/browser-exploitation-v8

Browser and V8 exploitation playbook. Use when exploiting JavaScript engine vulnerabilities including JIT type confusion, incorrect bounds elimination, and V8 sandbox bypass to achieve renderer RCE and sandbox escape in Chrome/Chromium.

yaklang/business-logic-vuln

Entry P1 category router for business logic testing. Use when workflow abuse, race conditions, pricing flaws, or multi-step state attacks matter more than parser-level input injection.

yaklang/business-logic-vulnerabilities

Business logic vulnerability playbook. Use when reasoning about workflows, race conditions, price manipulation, coupon abuse, state machines, and multi-step authorization gaps.

yaklang/classical-cipher-analysis

Classical cipher analysis playbook. Use when encountering substitution ciphers, Vigenere, transposition, XOR, or encoded text in CTF challenges that requires frequency analysis, Kasiski examination, or known-plaintext cryptanalysis.

yaklang/clickjacking

Clickjacking playbook. Use when testing whether target pages can be framed, whether X-Frame-Options or CSP frame-ancestors are properly configured, and whether UI redress attacks can trigger sensitive actions.

yaklang/cmdi-command-injection

Command injection playbook. Use when user input may reach shell commands, process execution, converters, import pipelines, or blind out-of-band command sinks.

관련 스킬

steipete/bluebubbles

Send and manage iMessages via BlueBubbles, including attachments, tapbacks, edits, replies, and groups.

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steipete/eightctl

Control Eight Sleep pods (status, temperature, alarms, schedules).

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steipete/blucli

BluOS CLI (blu) for discovery, playback, grouping, and volume.

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steipete/bear-notes

Create, search, and manage Bear notes via grizzly CLI.

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steipete/camsnap

Capture frames or clips from RTSP/ONVIF cameras.

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steipete/gifgrep

Search GIF providers with CLI/TUI, download results, and extract stills/sheets.

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