competition-pcap-protocol SKILL.md skillA

competition-pcap-protocol from novaestellar/novahaku is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add novaestellar/novahaku/competition-pcap-protocol@git:20260925.9330cc6

Pins git:20260925.9330cc6 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
novaestellar/novahaku
Path
testing/ctf-sandbox/competition-pcap-protocol/SKILL.md
Versions recorded
1
Latest version
git:20260925.9330cc6, committed Sep 25, 2026
Size
3,509 bytes
Repository stars
28
License
MIT

Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for packet capture analysis, session reconstruction, application-protocol decoding, stream reassembly, beacon timing, and packet-to-process correlation. Use when the user asks to analyze a PCAP, rebuild TCP or UDP sessions, decode HTTP, WebSocket, DNS, custom C2, or binary protocols, extract transferred artifacts, or tie packet sequences to host or malware behavior. Use only after `$ctf-sandbox-orchestrator` has…

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

# Competition PCAP Protocol

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 evidence sits inside packet order, protocol framing, or stream reconstruction rather than a single IOC or host log.

Reply in Simplified Chinese unless the user explicitly requests English.

## Quick Start

1. Establish the capture boundaries first: hosts, time span, interfaces, missing packets, retransmits, and stream count.
2. Group traffic into sessions before decoding payload semantics.
3. Record protocol framing, sequence, timing, and transferred artifacts together instead of as isolated packets.
4. Correlate packet evidence with host, malware, or app behavior only after the session is reconstructed.
5. Reproduce the smallest decoded stream or transferred artifact that proves the challenge path.

## Workflow

### 1. Build The Session Map

- Identify endpoints, protocols, ports, TLS handshakes, DNS lookups, websocket upgrades, and long-lived streams.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add novaestellar/novahaku/competition-pcap-protocol@sha256:ee2fa48f8661fffb

The line at the top of this page pins the label git:20260925.9330cc6, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_g4w3vl3y6lbep6sl.svg)](https://markdownregistry.com/a/art_g4w3vl3y6lbep6sl)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 25, 2026.

versioncommittedcommitsizeaudit
git:20260925.9330cc6 latest2026-09-25 9330cc6 3,509 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (3509 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

novaestellar/novahaku · 28 stars · license MIT · pushed 2026-09-28 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_g4w3vl3y6lbep6sl
GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/competition-pcap-protocol
GET https://markdownregistry.com/api/v1/blob/ee2fa48f8661fffbb0b6bb35eaddaaf31adcbfce483e5aab02ad966789333511

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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