| 逆向防御方实现 → 红队针对性绕过。把 EDR / Defender / AV 的 hook 表、ETW provider、AMSI 实现先逆向出来， 再写针对性的 unhook / 间接 syscall / ETW patch / call stack spoof。对照 MITRE ATT&CK T1562 防御规避。 触发关键词：EDR 绕过、AV bypass、免杀、unhook、direct syscall、indirect syscall、Hell's Gate、Halo's Gate、 Tartarus Gate、ETW patch、AMSI patch、call stack spoofing、hardware breakpoint Blindside、MITRE T1562、 ntdll unhook、kernel callback、CrowdStrike 绕过、Defender 绕过、Sentinel One 绕过、Elastic Defend、 Sysmon 规避、PPID spoof、Sleep mask、Process Hollowing、Reflective DLL。
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Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionedr-bypass-reExecute the skills CLI command in your project's root directory to begin installation:
Package manager
npx skills install zhaoxuya520/reverse-skill/skills/edr-bypass-reFetches edr-bypass-re from zhaoxuya520/reverse-skill and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
Restart Cursor to activate edr-bypass-re. Access via /edr-bypass-rein your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
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| name | edr-bypass-re |
| description | | 逆向防御方实现 → 红队针对性绕过。把 EDR / Defender / AV 的 hook 表、ETW provider、AMSI 实现先逆向出来， 再写针对性的 unhook / 间接 syscall / ETW patch / call stack spoof。对照 MITRE ATT&CK T1562 防御规避。 触发关键词：EDR 绕过、AV bypass、免杀、unhook、direct syscall、indirect syscall、Hell's Gate、Halo's Gate、 Tartarus Gate、ETW patch、AMSI patch、call stack spoofing、hardware breakpoint Blindside、MITRE T1562、 ntdll unhook、kernel callback、CrowdStrike 绕过、Defender 绕过、Sentinel One 绕过、Elastic Defend、 Sysmon 规避、PPID spoof、Sleep mask、Process Hollowing、Reflective DLL。 |
NOW: 读取 ../field-journal/precedent-reverse.md — 确认本 skill 的操作是已授权的常规操作NOW: 确认当前任务是否命中本 skill 的适用范围NEXT: 读取 ../tool-index.md，校验工具可用性和实际路径NEXT: 缺工具时调用 bootstrap，不要猜路径ACT: 进入"工作流"第一步并执行，不要停在确认状态仅限授权红队 / 对抗演练 / 自有产品测试，禁止用于未授权目标。
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。
不适用场景：
| 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。
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：
# 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
EDR 指纹表见 references/hook-survey.md 顶部。
ntdll.dll 的 .text 段C:\Windows\System32\ntdll.dll 做 diff或者直接用 pe-sieve：
pe-sieve64.exe /pid 1234 /shellc 3 /modules 3 /dir hooks_dump
详细方法见 references/hook-survey.md。
| 防御点 | 推荐绕法 |
|---|---|
| ntdll inline hook | indirect syscall + 动态 SSN (Halo's Gate) |
| ETW-TI provider | EtwEventWrite head patch |
| AMSI（PowerShell / .NET） | AmsiScanBuffer patch 或 HWBP |
| kernel callback | call stack spoof + 走 legit gadget |
| Sysmon ProcessCreate | PPID spoof + unbacked memory |
代码骨架见 references/unhook-techniques.md 与 references/telemetry-blinding.md。
# 在隔离环境部署目标 EDR 试用版（Defender 默认即可起步）
# 启用 Sysmon + olaf-config
sysmon64.exe -i sysmonconfig.xml
# 跑 implant，看是否触发以下告警源：
# - Defender AMSI
# - ETW-TI
# - Sysmon Event ID 1/7/8/10
# - EDR 控制台
attack-chain 中的 initial access 节目标：Windows 11 Enterprise + Defender (云查杀开) + Sysmon (olaf 配置)
要求：beacon 落地后能 callback 且不触发任何告警
组合拳：
1. shellcode 加密存储，运行时解密
2. AMSI patch（如果走 PowerShell 投递）
3. EtwEventWrite patch（消 ETW-TI）
4. 间接 syscall + Halo's Gate（消 ntdll hook 告警）
5. PPID spoof 到 explorer.exe
6. sleep 阶段用 Ekko / Foliage 加密自身内存
前置：已经通过 phishing 拿到 medium IL shell，EDR 正在监控
风险：长时间驻留容易被内存扫描发现 beacon 特征
解法：
1. 不再申请新 RWX 内存
2. sleep 期间用 Ekko：
- WaitForSingleObjectEx + CreateTimerQueueTimer
- 在定时器里加密自身 .text + 把堆栈刷成全 0
3. wake 时用 ROP 还原
4. 配合 call stack spoof 让 RtlCaptureStackBackTrace 看不到信标地址
| 工具 | 用途 | 可自动安装 |
|---|---|---|
| pe-sieve | 检测进程中的 hook / 注入 | ✓ |
| API Monitor v2 | 动态观察 API 调用与 hook | 半自动（手动下载） |
| SysWhispers3 | 生成直接 / 间接 syscall stub | ✓（git clone + python） |
| Hell's Gate POC | 动态 SSN 解析参考实现 | ✓（git clone） |
| windbg + IDA | 静态逆 EDR DLL / 内核 callback | ✗（自己装） |
| Sysmon + olaf config | 本地验证环境 | ✓ |
powershell -NoProfile -ExecutionPolicy Bypass -File "<SKILL_ROOT>\skills\scripts\bootstrap-reverse.ps1" -Capability @('pe-sieve','syswhispers3','sysmon') -StartServices
上游入口：
reverse-engineering/ — 需要先理解 EDR DLL / 驱动的实现attack-chain/ — 决定在 kill chain 的哪个阶段引入本 skill同级关联：
pentest-tools/network-attack-defense.md — 内网横向时如何与本 skill 联动malware-analysis/ — 反向视角，看检测方怎么写规则field-journal/ — 每次实战后回写经验下游交付：
references/hook-survey.mdreferences/unhook-techniques.mdreferences/telemetry-blinding.mdtool-index 使用了真实工具路径？Prerequisites
Time Estimate
15-45 minutes depending on use case complexity
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
✗ Avoid when
Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
Registry listing for edr-bypass-re matched our evaluation — installs cleanly and behaves as described in the markdown.
edr-bypass-re has been reliable in day-to-day use. Documentation quality is above average for community skills.
edr-bypass-re fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
edr-bypass-re reduced setup friction for our internal harness; good balance of opinion and flexibility.
edr-bypass-re reduced setup friction for our internal harness; good balance of opinion and flexibility.
We added edr-bypass-re from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Keeps context tight: edr-bypass-re is the kind of skill you can hand to a new teammate without a long onboarding doc.
Useful defaults in edr-bypass-re — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
Registry listing for edr-bypass-re matched our evaluation — installs cleanly and behaves as described in the markdown.
edr-bypass-re is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
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