PoC-Validator Skill

Validates vulnerability exploitability through controlled payload generation, sandboxed execution, and success verification.

Quick Start

Generate and validate a PoC for SQL injection:

from scripts.payload_generator import PayloadGenerator
from scripts.sandbox_executor import SandboxExecutor
from scripts.verify_exploit import ExploitVerifier

# Generate payload
gen = PayloadGenerator()
payload = gen.generate_sql_payload(
    target_url="http://target.com/login",
    parameter="username",
    technique="error_based"
)

# Execute in sandbox
executor = SandboxExecutor()
result = await executor.execute_sqlmap(
    target="http://target.com/login",
    payload=payload,
    risk_level=2
)

# Verify success
verifier = ExploitVerifier()
is_exploitable = await verifier.verify_sql_injection(result)

Workflow

1. Payload Generation

Use scripts/payload_generator.py for:

• CVE-based exploits: Lookup known payloads from vulnerability_mapping.json
• SQL Injection: Error-based, Union-based, Time-based, Boolean-based
• Command Injection: System command payloads with evasion techniques
• Path Traversal: Directory traversal sequences
• XXE/XML Injection: External entity payloads

See references/payload_patterns.md for complete payload library.

2. Sandbox Execution

Use scripts/sandbox_executor.py for isolated exploit testing:

• Docker container isolation with resource limits
• Network isolation (no egress to private ranges)
• Execution timeouts (default: 300s)
• Read-only filesystem with tmpfs for output
• Automatic cleanup post-execution

Critical: All exploit execution MUST use sandbox. Never run exploits directly on host.

3. Success Verification

Use scripts/verify_exploit.py to confirm exploitation:

• SQL Injection: Detect database version extraction, table enumeration
• RCE: Verify command output in response
• Auth Bypass: Confirm session token/admin access
• Data Exfiltration: Detect sensitive data patterns in responses
• File Upload: Verify file presence/execution

Risk Levels

Level	Payload Type	Tools	Use Case
0	Passive detection	None	Vulnerability confirmation only
1	Safe payloads	SQLMap --risk 1	Non-destructive testing
2	Active exploitation	SQLMap --risk 2, Metasploit	Controlled exploitation
3	Aggressive	All tools with full payloads	Full PoC validation

Integration with Zen-AI-Pentest

# Integration with ExploitAgent
from autonomous.exploit_validator import ExploitValidator

def validate_poc(self, vulnerability: dict) -> dict:
    """Validate vulnerability with PoC execution."""
    validator = ExploitValidator(
        sandbox_enabled=True,
        risk_level=vulnerability.get("risk", 1)
    )

    return validator.validate(
        vuln_type=vulnerability["type"],
        target=vulnerability["target"],
        evidence=vulnerability["evidence"]
    )

Safety Controls

Before any exploit execution:

1. Validate target is not in private ranges (guardrails/ip_validator.py)
2. Confirm explicit authorization in database
3. Set execution timeout
4. Enable Docker sandbox
5. Log all actions to audit trail

See references/safety_requirements.md for complete safety checklist.

Error Handling

Error	Cause	Solution
Sandbox timeout	Payload too slow	Increase timeout or use faster technique
Container crash	Resource exhaustion	Reduce threads, increase memory limit
Network blocked	Egress filtering	Verify allowed outbound in config
Verification failed	WAF/IPS blocking	Try evasion techniques from payload_patterns.md

Output Format

{
  "poc_id": "uuid",
  "vulnerability_id": "vuln-123",
  "status": "verified|failed|inconclusive",
  "exploit_type": "sql_injection|rce|xxe|...",
  "payload_used": "...",
  "sandbox_logs": "...",
  "evidence": {
    "before": "...",
    "after": "...",
    "extracted_data": "..."
  },
  "risk_level": 2,
  "timestamp": "2026-03-20T14:46:00Z",
  "verified_by": "exploit_agent_v3"
}

References

• Payload Patterns Library - Complete payload collection
• Sandbox Setup Guide - Docker configuration details
• Safety Requirements - Mandatory safety checks
• CVE Database Schema - CVE lookup structure

Scripts

• scripts/payload_generator.py - Generate tailored exploit payloads
• scripts/sandbox_executor.py - Execute exploits in Docker sandbox
• scripts/verify_exploit.py - Verify exploitation success
• scripts/cleanup_sandbox.py - Clean up sandbox resources