Competition Ssrf Metadata Pivot
Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for SSRF reachability, internal route probing, metadata-service access, credential pivoting, and token-to-accepted-privilege chains. Use when the user asks to trace SSRF sources, internal hosts, metadata endpoints, link-local tokens, service-account credentials, or explain how a server-side fetch edge turns into accepted…
Install
$ agentstack add skill-zhaoxuya520-reverse-skill-competition-ssrf-metadata-pivot ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
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Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-zhaoxuya520-reverse-skill-competition-ssrf-metadata-pivot) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Competition SSRF Metadata Pivot
Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.
Use this skill when the decisive path runs through server-side request capability, internal service reachability, or metadata-derived credentials.
Reply in Simplified Chinese unless the user explicitly requests English.
Quick Start
- Separate the SSRF source, forwarding layer, reachable target, and accepted downstream credential edge.
- Record request method, URL construction, header behavior, redirects, DNS or host overrides, and response shaping before mutation.
- Map internal host, metadata endpoint, token extraction, and accepting service as one chain.
- Distinguish read-only reachability from credential-bearing access.
- Reproduce the smallest SSRF-to-accepted-access path.
Workflow
1. Map SSRF Reachability
- Record source primitive: URL parameter, webhook, image fetcher, importer, proxy endpoint, or backend callback.
- Note normalization steps: scheme filtering, host allowlists, redirects, DNS resolution, path rewrite, and header injection.
- Keep target host, protocol, and response behavior tied to the exact SSRF source.
2. Trace Metadata And Credential Pivot
- Show whether metadata endpoints, internal control APIs, or workload identity services are reachable.
- Record token fields, role scope, service account, expiration, and where the token is accepted.
- Distinguish credential extraction success from accepted privilege at a downstream service.
3. Reduce To Decisive SSRF Chain
- Compress to: SSRF source -> internal or metadata target -> credential or sensitive response -> accepted replay or API access.
- State whether the decisive edge is parser bypass, allowlist bypass, redirect abuse, header confusion, or metadata trust.
- If the task becomes mostly cloud identity policy analysis, hand off to the tighter cloud metadata skill.
Read This Reference
- Load
references/ssrf-metadata-pivot.mdfor SSRF checklists, metadata pivots, and evidence packaging.
What To Preserve
- SSRF source point, URL construction rules, reachable hosts, and response deltas
- Extracted token or credential fields, scope, and accepting service
- One minimal SSRF-to-accepted-access replay path
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: zhaoxuya520
- Source: zhaoxuya520/reverse-skill
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.