edr-bypass-re

edr-bypass-re is a skill for Claude Code, Codex from 2233admin/reverse-skill-evolver. It costs 195 tokens per session (2,547 once invoked), scanned A, a copy of edr-bypass-re, MIT.

A security-testing guide for studying how endpoint defenses such as EDR, Defender, and antivirus monitor Windows systems, then testing ways to avoid those detections in authorized exercises.

In plain words
What is it for?
Use it to study defense hooks and telemetry, test defensive coverage, and assess implant delivery on Windows hosts during approved red-team or purple-team work.
Why use it?
It gives red teams a focused way to assess whether a defense can detect a known implant or test payload. It is intended only for authorized testing, product evaluation, CTFs, and owned systems.

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/2233admin/reverse-skill-evolver/edr-bypass-re
Any agent
npx skills add 2233admin/reverse-skill-evolver --skill edr-bypass-re
Clone the repo
git clone --depth 1 https://github.com/2233admin/reverse-skill-evolver

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 edr-bypass-re

README.md
[![agentmods](https://agentmods.dev/badge/skills/2233admin/reverse-skill-evolver/edr-bypass-re.svg)](https://agentmods.dev/skills/2233admin/reverse-skill-evolver/edr-bypass-re)
Your own site
<a href="https://agentmods.dev/skills/2233admin/reverse-skill-evolver/edr-bypass-re"><img src="https://agentmods.dev/badge/skills/2233admin/reverse-skill-evolver/edr-bypass-re.svg" alt="Measured on agentmods" height="20"></a>
Per session 195 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,547 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 92% copy Near-identical to another mod 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 $0.00195 $0.02547
Opus 5 $0.00097 $0.01273
Sonnet 5 $0.00039 $0.00509
Haiku 4.5 $0.00019 $0.00255

Measured 5d ago against content hash 5648511c9733, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

edr-bypass-re 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 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.

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.

Origin

This is a copy

92% identical to edr-bypass-re — 16 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/edr-bypass-re/SKILL.md · 219 lines

How it starts

The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.

EDR 绕过:从防御方实现逆向到红队绕过

仅限授权红队 / 对抗演练 / 自有产品测试,禁止用于未授权目标。

适用范围

红队 / 对抗模拟在已获授权的目标主机投递 implant 并躲避现代 EDR 时使用本 skill。

  1. 红队 / Purple team / 对抗演练 — 客户希望评估 SOC 与 EDR 的真实检测能力
  2. 自研 implant / C2 框架研发 — 开发针对自家产品测试的载荷,需要绕过自家或目标 EDR
  3. EDR 产品评估 — 在合规边界已确认的前提下,客观评测某款 EDR 的检测覆盖
  4. CTF / 攻防演练的 Windows 端突破 — 比赛中需要在加固主机上稳定执行

不适用场景

  • 杀毒厂商对自家产品做完整 RE 给客户出商业评估报告(找厂商正式合作)
  • 未授权目标的免杀对抗(违法)
  • 普通病毒木马的免杀(本 skill 关注红队 OPSEC,不教恶意代码写法)

与其他 skill 的分工

场景 用什么
全链路攻防(从外网打到域控) attack-chain/
内网横向 / AD 攻击 pentest-tools/network-attack-defense.md
在某个特定主机上要过 EDR 投递 implant 本 skill
单纯静态免杀(混淆 / 加壳) malware-analysis/(反向视角)

attack-chain 关注完整 kill chain,本 skill 只聚焦 EDR 这一个对手 的内部机制和针对性绕法。

核心原理

EDR 的四个主要监控面               红队的对策
─────────────────────              ─────────────────────
用户态 ntdll hook       ◄──►   unhook (Peruns Fart / fresh ntdll)
                                  间接 syscall / Hell's Gate
                                  hardware breakpoint Blindside

kernel callback         ◄──►   call stack spoof
(Ps/Cm/Ob 系列)                   走合法触发链(不直接绕,配合上游隐身)

ETW telemetry           ◄──►   EtwEventWrite patch
(Microsoft-Windows-Threat-          NtTraceControl 关 provider
 Intelligence 等)                  AmsiContext 同步处理

AMSI 扫描               ◄──►   AmsiScanBuffer patch (mov eax,0x80070057; ret)
(amsi.dll)                       hardware breakpoint 旁路
                                  reflective 加载副本 amsi.dll

关键认知:

  • EDR 不是黑盒 — 关键 hook / callback / provider 都能用 IDA + windbg 逆出来
  • 绕过技术要组合使用 — 单独一个 unhook 解决不了 ETW 告警,单独 AMSI patch 解决不了 syscall hook
  • 顺序很重要 — 先 ETW patch → 再 AMSI patch → 再 unhook;顺序错了 EDR 先收到 unhook 告警
  • 现代 EDR 已经把 ETW + kernel callback 当主战场,单纯用户态 unhook 早已不够

工作流

Step 1:识别目标主机的 EDR

# 列出常见 EDR / AV 驱动
Get-Service | Where-Object {$_.Name -match 'CSAgent|SentinelAgent|elasticendpoint|esets|ekrn|MsMpEng|wdsvc|cyserver|sysmon|aswbidsagent'}

# 列出加载的 minifilter
fltmc filters

# 列出已注册的内核 callback(需 windbg + 内核调试 / 或用 PChunter / DRVHV)
# !object \Callback
# !pnpcallback / Process / Thread / Image

Read the full file on GitHub · 219 lines

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. 5d ago First seen · 219 lines · 195 tokens per session scan A 5648511c9733

Subscribe to this mod's changes

edr-bypass-re is a skill published in the GitHub repository 2233admin/reverse-skill-evolver (13 stars, last pushed 24d ago), licensed MIT. It adds 195 tokens to every session and 2,547 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to edr-bypass-re, differing in 16 lines, and is treated as a copy.

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