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.
npx agentmods add skills/zhaoxuya520/reverse-skill/competition-linux-credential-pivotnpx skills add zhaoxuya520/reverse-skill --skill competition-linux-credential-pivotgit clone --depth 1 https://github.com/zhaoxuya520/reverse-skillWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00110 | $0.00572 |
| Opus 5 | $0.00055 | $0.00286 |
| Sonnet 5 | $0.00022 | $0.00114 |
| Haiku 4.5 | $0.00011 | $0.00057 |
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 yesterday.
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 Copies of this mod
4 near-identical copies found in the catalogue:
- competition-linux-credential-pivot — 100% identical, 0 lines differ
- competition-linux-credential-pivot — 100% identical, 0 lines differ
- competition-linux-credential-pivot — 100% identical, 0 lines differ
- competition-linux-credential-pivot — 100% identical, 0 lines differ
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
- Separate credential storage from accepted privilege.
- Record user, process, namespace, socket, key file, and service trust boundary before conclusions.
- Keep artifact recovery, replay path, and resulting capability in one chain.
- Distinguish local escalation from lateral host pivot.
- 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.mdfor artifact checklists, replay matrix, and evidence packaging.
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.
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.
- yesterday First seen · 51 lines · 110 tokens per session scan B f00c32a3361c
competition-linux-credential-pivot is a skill published in the GitHub repository zhaoxuya520/reverse-skill (31,677 stars, last pushed 5d ago), 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). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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