unboundcompute/security-agent-skills · skills/hunting-dns-rebinding-and-ssrf-pivots/SKILL.md

hunting-dns-rebinding-and-ssrf-pivots skillA

hunting-dns-rebinding-and-ssrf-pivots is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt server-side request forgery and DNS rebinding that turn a server into a proxy for the internal network: a URL or hostname a caller controls that the server fetches, a validation that checks the hostname once but connects later so a rebinding answer swaps it for an internal address, a redirect the fetcher follows into internal space, and a reached internal service (metadata endpoint, admin port, database) that trusts callers by network position. Covers server-side fetchers, webhooks, importe.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/hunting-dns-rebinding-and-ssrf-pivots@git:20260829.b60f9b2
Exact content
mdr add unboundcompute/security-agent-skills/hunting-dns-rebinding-and-ssrf-pivots@sha256:b931a3d5099a90a0

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_sl3u64uiod63abha.svg)](https://markdownregistry.com/a/art_sl3u64uiod63abha)

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Versions

versioncommittedcommitsizeaudit
git:20260829.b60f9b2 latest2026-08-29 b60f9b2 10,101 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10101 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_sl3u64uiod63abha
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-dns-rebinding-and-ssrf-pivots
GET https://markdownregistry.com/api/v1/blob/b931a3d5099a90a022a4d8b1fa03ecb34a921ca92c958a5d9b495df69ff21a83

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.