persist-maintain

persist-maintain is a skill for Claude Code, Codex from wgpsec/AboutSecurity. It costs 67 tokens per session (764 once invoked), scanned A, original, no licence file.

A post-compromise guide to keeping access to Linux and Windows systems, including through web applications. It describes methods involving scheduled tasks, services, startup settings, SSH keys, registry entries, WMI, and web shells.

In plain words
What is it for?
Use it to review persistence through cron jobs, SSH keys, web shells, Windows tasks, services, registry settings, and WMI.
Why use it?
It helps security testers assess whether access remains after a system is restarted or an initial entry point is removed.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to review persistence through cron jobs, SSH keys, web shells, Windows tasks, services, registry settings, and WMI.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wgpsec/aboutsecurity/persist-maintain
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 wgpsec/AboutSecurity --skill persist-maintain
Clone the repo
git clone --depth 1 https://github.com/wgpsec/AboutSecurity

Made for: Claude Code, 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 persist-maintain

README.md
[![agentmods](https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/persist-maintain.svg)](https://agentmods.dev/skills/wgpsec/aboutsecurity/persist-maintain)
Your own site
<a href="https://agentmods.dev/skills/wgpsec/aboutsecurity/persist-maintain"><img src="https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/persist-maintain.svg" alt="Measured on agentmods" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 764 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to critical

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • critical YARA Match · line 26
    YARA rule matched a known webshell pattern (PHP, Python, JSP, or ASPX webshell).
    Fix: Remove the webshell code immediately. Webshells provide unauthorized remote command execution. Audit the skill for additional backdoors or persistence mechanisms.
How audits are shown
Origin unknown No closer match found 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 $0.00067 $0.00764
Opus 5 $0.00034 $0.00382
Sonnet 5 $0.00013 $0.00153
Haiku 4.5 $0.00007 $0.00076

Measured 4d ago against content hash a0bb2adf9b43, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

persist-maintain scanned grade A with 0 findings 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 4d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/postexploit/persist-maintain/SKILL.md · 67 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 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. 4d ago First seen · 67 lines · 67 tokens per session scan A a0bb2adf9b43

Subscribe to this mod's changes

persist-maintain is a skill published in the GitHub repository wgpsec/AboutSecurity (1,725 stars, last pushed 8d ago), with no licence file. It adds 67 tokens to every session and 764 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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