Agent Skills: WebAssessment Skill

Customization

Before executing, check for user customizations at: ~/.opencode/skills/PAI/USER/SKILLCUSTOMIZATIONS/WebAssessment/

If this directory exists, load and apply any PREFERENCES.md, configurations, or resources found there. These override default behavior. If the directory does not exist, proceed with skill defaults.

🚨 MANDATORY: Voice Notification (REQUIRED BEFORE ANY ACTION)

You MUST send this notification BEFORE doing anything else when this skill is invoked.

1. Send voice notification:

   curl -s -X POST http://localhost:8888/notify \
     -H "Content-Type: application/json" \
     -d '{"message": "Running the WORKFLOWNAME workflow in the WebAssessment skill to ACTION"}' \
     > /dev/null 2>&1 &
   

2. Output text notification:

   Running the **WorkflowName** workflow in the **WebAssessment** skill to ACTION...
   

This is not optional. Execute this curl command immediately upon skill invocation.

WebAssessment Skill

Security assessment infrastructure integrating reconnaissance, threat modeling, and vulnerability testing.

Workflow Routing

| Trigger | Workflow | |---------|----------| | "understand application", "what does this app do", "map the application" | UnderstandApplication | | "threat model", "attack scenarios", "how would I attack" | CreateThreatModel | | "pentest", "security assessment", "test for vulnerabilities" | Pentest/MasterMethodology | | "fuzz with ffuf", "directory fuzzing", "content discovery" | Ffuf/FfufGuide | | "OSINT", "reconnaissance", "open source intelligence" | Osint/MasterGuide | | "test web app", "Playwright", "browser automation" | Webapp/TestingGuide | | "bug bounty", "bounty programs" | BugBounty/Programs | | "vulnerability analysis with AI", "Gemini analysis" | VulnerabilityAnalysisGemini3 |

Skill Integration

WebAssessment coordinates with specialized skills:

| Phase | Skill | Purpose | |-------|-------|---------| | Scope Definition | Recon | Corporate structure, domain enumeration | | Target Discovery | Recon | Subdomains, endpoints, ports | | Understanding | WebAssessment | App narrative, user flows, sensitive data | | Threat Modeling | WebAssessment | Attack scenarios, test prioritization | | Injection Testing | PromptInjection | LLM-specific attacks | | Intelligence | OSINT | People, companies, social media |

Assessment Workflow

1. Corporate Structure (Recon) → Define scope and targets
2. Subdomain Enumeration (Recon) → Find all domains
3. Endpoint Discovery (Recon) → Extract JS endpoints
4. Understand Application → Build app narrative
5. Create Threat Model → Prioritize attack scenarios
6. Execute Testing → Test against identified threats
7. Report Findings → Document with PoCs

Recon Skill Tools

WebAssessment uses tools from the Recon skill:

# Corporate structure for scope
bun ~/.opencode/skills/Recon/Tools/CorporateStructure.ts target.com

# Subdomain enumeration
bun ~/.opencode/skills/Recon/Tools/SubdomainEnum.ts target.com

# Endpoint discovery from JavaScript
bun ~/.opencode/skills/Recon/Tools/EndpointDiscovery.ts https://target.com

# Port scanning
bun ~/.opencode/skills/Recon/Tools/PortScan.ts target.com

# Path discovery
bun ~/.opencode/skills/Recon/Tools/PathDiscovery.ts https://target.com

UnderstandApplication Output

Produces structured narrative including:

• Summary: Purpose, industry, user base, critical functions
• User Roles: Access levels and capabilities
• User Flows: Step-by-step processes with sensitive data
• Technology Stack: Frontend, backend, auth, third-party
• Attack Surface: Entry points, inputs, file uploads, websockets

CreateThreatModel Output

Generates prioritized attack plan:

• Threats: OWASP/CWE mapped with risk scores
• Attack Paths: Multi-step attack scenarios
• Test Plan: Prioritized with tool suggestions
• Effort Estimates: Quick/medium/extensive per threat

Threat Categories

| Category | Triggers On | |----------|-------------| | Authentication | Auth mechanisms detected | | Access Control | Multiple user roles | | Injection | All web apps | | Data Exposure | Sensitive data identified | | File Upload | Upload functionality | | API Security | API endpoints | | WebSocket | WebSocket detected | | Business Logic | All web apps | | Payment Security | Payment flows |

6-Phase Pentest Methodology

Phase 0: Scoping & Preparation Phase 1: Reconnaissance (Recon skill) Phase 2: Mapping (content discovery) Phase 3: Vulnerability Analysis Phase 4: Exploitation Phase 5: Reporting

Key Principles

1. Authorization first - Never test without explicit permission
2. Understand before testing - Build app narrative first
3. Threat model guides testing - Don't test blindly
4. Breadth then depth - Wide recon, focused exploitation
5. Document everything - Notes, screenshots, commands

Workflow Index

Core Assessment:

• Workflows/UnderstandApplication.md - Application reconnaissance
• Workflows/CreateThreatModel.md - Attack scenario generation

Penetration Testing:

• Workflows/Pentest/MasterMethodology.md - 6-phase methodology
• Workflows/Pentest/ToolInventory.md - Security tools reference
• Workflows/Pentest/Reconnaissance.md - Asset discovery
• Workflows/Pentest/Exploitation.md - Vulnerability testing

Web Fuzzing:

• Workflows/Ffuf/FfufGuide.md - FFUF fuzzing guide
• Workflows/Ffuf/FfufHelper.md - Automated fuzzing helper

Bug Bounty:

• Workflows/BugBounty/Programs.md - Program tracking
• Workflows/BugBounty/AutomationTool.md - Bounty automation

Web App Testing:

• Workflows/Webapp/TestingGuide.md - Playwright testing
• Workflows/Webapp/Examples.md - Testing patterns

OSINT:

• Workflows/Osint/MasterGuide.md - OSINT methodology
• Workflows/Osint/Reconnaissance.md - Domain recon
• Workflows/Osint/SocialMediaIntel.md - SOCMINT
• Workflows/Osint/Automation.md - SpiderFoot/Maltego
• Workflows/Osint/MetadataAnalysis.md - ExifTool analysis

AI-Powered:

• Workflows/VulnerabilityAnalysisGemini3.md - Gemini deep analysis

Examples

Example 1: Full assessment workflow

User: "Security assessment on app.example.com"
→ Run UnderstandApplication to build narrative
→ Run CreateThreatModel to prioritize testing
→ Follow MasterMethodology with threat model guidance
→ Report findings with OWASP/CWE references

Example 2: Quick threat model

User: "How would I attack this app?"
→ Run CreateThreatModel on target
→ Get prioritized attack paths
→ Get test plan with tool suggestions

Example 3: Integrate with Recon

User: "Assessment on target.com including all subdomains"
→ CorporateStructure (Recon) → Find parent/child companies
→ SubdomainEnum (Recon) → Find all subdomains
→ EndpointDiscovery (Recon) → Extract JS endpoints
→ UnderstandApplication → Build app narrative
→ CreateThreatModel → Generate attack plan