Individual skill
ad-coercer
Authentication coercion against Windows / AD — PetitPotam (MS-EFSR), PrinterBug (MS-RPRN), DFSCoerce (MS-DFSNM), ShadowCoerce (MS-FSRVP), Coercer.py meta-tool. Force a Windows machine to NTLM-authenticate to attacker, then relay or crack offline.
packages/decepticon/decepticon/skills/standard/ad/coercer/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
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- Last checked
- Nov 8, 2026
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- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
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- agent Repository topic
- ai Repository topic
- cybersecurity Repository topic
- hacking Repository topic
- langchain Repository topic
- langgraph Repository topic
- llm Repository topic
- generative-ai Repository topic
- pentesting Repository topic
- pentest Repository topic
- ad,-coercion,-ntlm-relay,-petitpotam Declared skill tag
- security Derived category
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# Authentication Coercion (PetitPotam family)
Force a Windows machine — usually a Domain Controller — to send an NTLM authentication to an attacker-controlled host. Then either relay the auth (via `ntlmrelayx`) or crack it offline.
## The family of coercion vulnerabilities
| Vector | Protocol | RPC | Mitigated by |
|---|---|---|---|
| **PetitPotam** | MS-EFSR (Encrypting File System Remote) | `EfsRpcOpenFileRaw` | KB5005413 (Aug 2021) — partial; bypasses persist via other Efs* methods |
| **PrinterBug** | MS-RPRN (Print System Remote) | `RpcRemoteFindFirstPrinterChangeNotificationEx` | Disable Print Spooler |
| **DFSCoerce** | MS-DFSNM (Distributed File System) | `NetrDfsGetVersion`, `NetrDfsRemoveStdRoot` | Restrict DFSN to admins |
| **ShadowCoerce** | MS-FSRVP (File Server Remote VSS) | `IsPathSupported` | KB5015527 (Jul 2022) |
| **CheeseOunce / WebDavCoerce** | WebDAV WebClient | (various) | Disable WebClient service |
