offensive-rce

offensive-rce is a skill for Claude Code, Codex from Miosa-osa/OSA. It costs 67 tokens per session (542 once invoked), scanned A, original, Apache-2.0.

A checklist for testing remote code execution, where an attacker may cause a server or application to run commands or code they supplied.

In plain words
What is it for?
Use it during authorised web application penetration tests to investigate command injection, unsafe deserialization, file uploads, template flaws, and related patterns.
Why use it?
It helps security testers examine several paths that could turn an input flaw, unsafe file, or vulnerable dependency into server control.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it during authorised web application penetration tests to investigate command injection, unsafe deserialization, file uploads, template flaws, and related patterns.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/miosa-osa/osa/offensive-rce
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 Miosa-osa/OSA --skill offensive-rce
Clone the repo
git clone --depth 1 https://github.com/Miosa-osa/OSA

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 offensive-rce

README.md
[![agentmods](https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-rce/github.svg)](https://agentmods.dev/skills/miosa-osa/osa/offensive-rce)
Your own site
<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-rce"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-rce/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for offensive-rce

Your own site · 80×15
<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-rce"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-rce.svg" alt="Reviewed on agentmods" width="80" 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 542 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.
Origin original 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 $0.00542
Opus 5.5 $0.00027 $0.00217
Sonnet 5.5 $0.00013 $0.00108
Haiku 4.5 $0.00007 $0.00054

Measured 1mo ago against content hash fb0c9920751e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

offensive-rce 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 1mo 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.

priv/skills/offensive-rce/SKILL.md · 52 lines

What it actually says

SKILL: Remote Code Execution

Metadata

Description

Remote Code Execution testing checklist: OS command injection, SSTI-to-RCE, deserialization RCE, file upload RCE, XXE with SSRF to RCE, RCE via dependency confusion, and CVE-based RCE patterns. Use for web app pentests and bug bounty RCE discovery.

Trigger Phrases

Use this skill when the conversation involves any of: RCE, remote code execution, command injection, OS injection, SSTI RCE, deserialization RCE, file upload RCE, XXE RCE, dependency confusion, code execution

Methodology references

Read the relevant sections below before following a technique. Read them in order for the complete original methodology. Confirm the target and testing scope with the user before performing any active checks.

Files

What ships with it

5 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. 1mo ago Changed · -1,049 lines scan E → A fb0c9920751e
  2. 1mo ago First seen · 1,101 lines · 67 tokens per session scan E 70e122a63d7e

Subscribe to this mod's changes

offensive-rce is a skill published in the GitHub repository Miosa-osa/OSA (78 stars, last pushed 11d ago), licensed Apache-2.0. It adds 67 tokens to every session and 542 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-14.