competition-linux-credential-pivot

competition-linux-credential-pivot is a skill for Codex from Saprophytic-seattle561/reverse-skill. It costs 110 tokens per session (572 once invoked), scanned B, a copy of competition-linux-credential-pivot, MIT.

A specialized security-analysis guide for capture-the-flag exercises involving Linux credentials and access between systems.

In plain words
What is it for?
Use it to trace SSH keys, tokens, agent sockets, cloud or container secrets, and other Linux authentication paths in an authorized sandbox.
Why use it?
It helps separate where authentication material is stored from which service accepts it, reducing confusion between local privilege increases and movement to another host.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Use it to trace SSH keys, tokens, agent sockets, cloud or container secrets, and other Linux authentication paths in an authorized sandbox.

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Install with agentmods
npx agentmods add skills/saprophytic-seattle561/reverse-skill/competition-linux-credential-pivot
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Saprophytic-seattle561/reverse-skill --skill competition-linux-credential-pivot
Clone the repo
git clone --depth 1 https://github.com/Saprophytic-seattle561/reverse-skill

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for competition-linux-credential-pivot

README.md
[![agentmods](https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-linux-credential-pivot.svg)](https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-linux-credential-pivot)
Your own site
<a href="https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-linux-credential-pivot"><img src="https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-linux-credential-pivot.svg" alt="Measured on agentmods" height="20"></a>
Per session 110 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 572 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00110 $0.00572
Opus 5 $0.00055 $0.00286
Sonnet 5 $0.00022 $0.00114
Haiku 4.5 $0.00011 $0.00057

Measured 7d ago against content hash f00c32a3361c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

competition-linux-credential-pivot scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

description: Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for Linux credential artifacts, service tokens, SSH material, cloud and container secrets, socket-level trust, and host-to-host pi
Origin

This is a copy

100% identical to competition-linux-credential-pivot — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CTF-Sandbox-Orchestrator/competition-linux-credential-pivot/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Linux Credential 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 edge is Linux credential material and where that material is accepted.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Separate credential storage from accepted privilege.
  2. Record user, process, namespace, socket, key file, and service trust boundary before conclusions.
  3. Keep artifact recovery, replay path, and resulting capability in one chain.
  4. Distinguish local escalation from lateral host pivot.
  5. Reproduce one minimal artifact-to-accepted-access path.

Workflow

1. Map Credential And Trust Artifacts

  • Record SSH keys, agent sockets, kubeconfigs, cloud tokens, service-account secrets, env vars, config files, and process memory clues.
  • Note sudoers rules, capabilities, setuid binaries, systemd unit context, and namespace boundaries.
  • Keep each artifact tied to owner, scope, and expected accepting service.

2. Prove Replay And Pivot

  • Show where key, token, socket, or secret is accepted: SSH, API, Unix socket, container runtime, or control-plane endpoint.
  • Record host target, protocol, principal, and resulting session or privilege.
  • Distinguish authentication success from useful capability gain.

3. Reduce To Decisive Linux Pivot Chain

  • Compress to: recovered artifact -> accepted replay path -> pivot host or privilege transition -> resulting capability.
  • State whether root cause is weak key handling, token leakage, socket trust, sudo or capability abuse, or namespace crossover.
  • If the chain pivots into kernel exploit boundaries, hand off to kernel container escape skill.

Read This Reference

  • Load references/linux-credential-pivot.md for artifact checklists, replay matrix, and evidence packaging.

Read the full file on GitHub · 51 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 51 lines · 110 tokens per session scan B f00c32a3361c

Subscribe to this mod's changes

competition-linux-credential-pivot is a skill published in the GitHub repository Saprophytic-seattle561/reverse-skill (1 stars, last pushed yesterday), licensed MIT. It adds 110 tokens to every session and 572 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). It is 100% identical to competition-linux-credential-pivot, differing in 0 lines, and is treated as a copy.

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