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 skills add Miosa-osa/OSA --skill offensive-edr-evasiongit clone --depth 1 https://github.com/Miosa-osa/OSAWrote 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.
[](https://agentmods.dev/skills/miosa-osa/osa/offensive-edr-evasion)<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-edr-evasion"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-edr-evasion/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.
<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-edr-evasion"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-edr-evasion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00073 | $0.02847 |
| Opus 5.5 | $0.00029 | $0.01139 |
| Sonnet 5.5 | $0.00015 | $0.00569 |
| Haiku 4.5 | $0.00007 | $0.00285 |
Grade A, and why
offensive-edr-evasion 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.
How it starts
The opening of the file, as written. The whole thing — 354 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: Endpoint Detection and Response
Metadata
- Skill Name: edr-evasion
- Folder: offensive-edr-evasion
- Source: https://github.com/SnailSploit/offensive-checklist/blob/main/edr.md
Description
EDR evasion offensive checklist: hook unhooking (user/kernel), direct syscalls, PPID spoofing, process injection variants, AMSI bypass, ETW patching, memory encryption, and behavior-based evasion. Use when planning EDR bypass during red team engagements or researching AV/EDR evasion techniques.
Trigger Phrases
Use this skill when the conversation involves any of:
EDR evasion, EDR bypass, hook unhooking, direct syscalls, PPID spoofing, process injection, AMSI bypass, ETW patch, memory encryption, AV evasion, behavioral evasion, red team evasion
Full Methodology
Endpoint Detection and Response
Fundamentals
AV vs EDR
Antivirus (preventive approach):
- Static Analysis: Matching known signatures in files
- Dynamic Analysis: Limited behavioral monitoring/sandboxing
- Effective against known threats, weaker against advanced attacks
EDR (proactive & investigative approach):
- Continuous endpoint monitoring
- Behavioral analysis at kernel level
- Anomaly detection and post-compromise visibility
- Prioritizes incident response and investigation
Windows Execution Flow
Windows program execution follows a hierarchical flow:
- Applications - User programs like firefox.exe
- DLLs - Libraries providing Windows functionality without direct low-level access
- Kernel32.dll - Core DLL for memory management, process/thread creation
- Ntdll.dll - Lowest user-mode DLL that exposes the NT API interface to the kernel
- Kernel - Core OS component with unrestricted hardware access
Example operation flow (creating a file):
- Application invokes
CreateFilefunction - CreateFile forwards to
NtCreateFile - Ntdll.dll triggers
NtCreateFilesyscall - Kernel creates the file and returns a handle
EDR Visibility
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.
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.
- 1mo ago First seen · 354 lines · 73 tokens per session scan A 43132dec182e
offensive-edr-evasion is a skill published in the GitHub repository Miosa-osa/OSA (78 stars, last pushed 11d ago), licensed Apache-2.0. It adds 73 tokens to every session and 2,847 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.
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