active-directory-attack

A guide for testing the security of Active Directory, the Windows system used to manage users, computers, permissions, and sign-ins across an organization. It covers common attacks against domain accounts, Kerberos authentication, Windows credentials, and movement between machines.

In plain words
What is it for?
Use it during an authorized internal security test to map hosts and users, find risky permissions, test Kerberos and NTLM weaknesses, investigate lateral movement, and assess domain-level compromise.
Why use it?
It provides an ordered approach for finding attack paths and testing how an attacker could gain higher privileges in a Windows domain. It also identifies tools used for account discovery, credential testing, and domain takeover checks.

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/jessefmoore/offensive-claude-code/active-directory-attack
Any agent
npx skills add jessefmoore/offensive-claude-code --skill active-directory-attack
Clone the repo
git clone --depth 1 https://github.com/jessefmoore/offensive-claude-code

Made for: Claude Code, Codex.

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,366 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original 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 $0.00045 $0.05366
Opus 5 $0.00023 $0.02683
Sonnet 5 $0.00009 $0.01073
Haiku 4.5 $0.00005 $0.00537

Measured 2d ago against content hash 2b6861e437e6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

active-directory-attack 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 2d 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.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

When the engagement Kali has no passwordless sudo (common on shared lab boxes) and the AD realm doesn't resolve via DNS, normal `nxc -k --use-kcache` fails with `[Errno -2] Name or service not known` on the `<REALM>:88`

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

skills/active-directory-attack/SKILL.md · 517 lines

How it starts

The opening of the file, as written. The whole thing — 517 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Active Directory Attacks

When to Activate

  • Attacking Windows domain environments
  • Kerberos exploitation (Kerberoasting, AS-REP roasting, tickets)
  • NTLM relay and lateral movement
  • BloodHound enumeration and attack path discovery
  • Domain privilege escalation and persistence
  • DCSync and credential extraction

Essential Tools

Tool Purpose
BloodHound AD attack path visualization
Impacket Python AD attack suite
Mimikatz Credential extraction
Rubeus Kerberos attacks
NetExec (nxc) Network exploitation — see skills/netexec/SKILL.md for the canonical reference
PowerView AD enumeration
Responder LLMNR/NBT-NS poisoning
Kerbrute User enumeration & password spray

Engagement Spine — Default Playbook (run in order, not just on-demand)

Every authorized internal AD engagement should walk these phases. Each step has a "must-run" check and a callout for the easy-to-miss anti-patterns we've burned ourselves on in past engagements.

Phase 0 — Unauthenticated recon (no creds yet)

# Live-host discovery
nmap -sn <subnet> -oA hosts
nxc smb <subnet>                              # SMB banner sweep, signing posture, NetBIOS names

# LDAP signing + channel binding posture (relay-target detection)
nxc ldap <subnet>                             # banner shows signing:None and channel binding state

# Anonymous SMB + RID brute + password policy disclosure
nxc smb <subnet> -u '' -p '' --shares
nxc smb <dc-ip> -u '' -p '' --pass-pol
nxc smb <dc-ip> -u '' -p '' --rid-brute 10000

# Guest fallback (Critical anti-pattern — often forgotten)
nxc smb <subnet> -u guest -p ''               # Per-host: success here = F08-class Guest fallback
nxc smb <dc-ip> -u guest -p '' --rid-brute 10000   # Guest can enumerate users when fallback is on

# Kerberos user-enum (no preauth → no logon noise)
kerbrute userenum -d <domain> --dc <dc-ip> /usr/share/seclists/Usernames/xato-net-10-million-usernames-dup.txt

Read the full file on GitHub · 517 lines

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. 2d ago First seen · 517 lines · 45 tokens per session scan A 2b6861e437e6

Subscribe to this mod's changes

active-directory-attack is a skill published in the GitHub repository jessefmoore/offensive-claude-code (2 stars, last pushed 3mo ago), licensed MIT. It adds 45 tokens to every session and 5,366 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens

chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

microsoft/vscode · 51 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens