macos-process-injection

macos-process-injection is a skill for Claude Code, Codex from Prohao42/aimy-skill. It costs 53 tokens per session (3,496 once invoked), scanned A, original, no licence file.

A macOS security-testing guide about injecting code into running processes, with a focus on the `DYLD_INSERT_LIBRARIES` mechanism and its requirements and restrictions.

In plain words
What is it for?
It is for investigating process-injection behavior through `DYLD_INSERT_LIBRARIES`, including when the technique works and what limits it.
Why use it?
It helps assess whether a macOS process can be made to load an unexpected library, which may expose weaknesses in application or system protections.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/prohao42/aimy-skill/macos-process-injection
Any agent
npx skills add Prohao42/aimy-skill --skill macos-process-injection
Clone the repo
git clone --depth 1 https://github.com/Prohao42/aimy-skill

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 macos-process-injection

README.md
[![agentmods](https://agentmods.dev/badge/skills/prohao42/aimy-skill/macos-process-injection.svg)](https://agentmods.dev/skills/prohao42/aimy-skill/macos-process-injection)
Your own site
<a href="https://agentmods.dev/skills/prohao42/aimy-skill/macos-process-injection"><img src="https://agentmods.dev/badge/skills/prohao42/aimy-skill/macos-process-injection.svg" alt="Measured on agentmods" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,496 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00053 $0.03496
Opus 5 $0.00026 $0.01748
Sonnet 5 $0.00011 $0.00699
Haiku 4.5 $0.00005 $0.00350

Measured 5d ago against content hash 117045a93bf2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

macos-process-injection scanned grade A 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 5d 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

"require('child_process').execSync('id').toString()"
ai-mian/hack-skills/skills/macos-process-injection/SKILL.md · 385 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

1 file 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. 5d ago First seen · 385 lines · 53 tokens per session scan A 117045a93bf2

Subscribe to this mod's changes

macos-process-injection is a skill published in the GitHub repository Prohao42/aimy-skill (135 stars, last pushed 11d ago), with no licence file. It adds 53 tokens to every session and 3,496 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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