HackSkills is an organized knowledge base of installable skills that gives AI agents practical security knowledge across areas such as web security, privilege escalation, reverse engineering, and digital forensics. It is intended for bug bounty work, penetration testing, CTF competitions, and authorized security research. The catalogue entries are the project's own master, category, and topic skills.
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 yaklang/hack-skills --skill active-directory-certificate-servicesgit clone --depth 1 https://github.com/yaklang/hack-skillsWrote 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/yaklang/hack-skills/active-directory-certificate-services)<a href="https://agentmods.dev/skills/yaklang/hack-skills/active-directory-certificate-services"><img src="https://agentmods.dev/badge/skills/yaklang/hack-skills/active-directory-certificate-services/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/yaklang/hack-skills/active-directory-certificate-services"><img src="https://agentmods.dev/badge/skills/yaklang/hack-skills/active-directory-certificate-services.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket warn
- Snyk fail
- NVIDIA SkillSpector pass
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 | $0.00047 | $0.02626 |
| Opus 5 | $0.00023 | $0.01313 |
| Sonnet 5 | $0.00009 | $0.00525 |
| Haiku 4.5 | $0.00005 | $0.00263 |
Grade A, and why
active-directory-certificate-services 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 9d 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.
Copies of this mod
4 near-identical copies found in the catalogue:
- active-directory-certificate-services — 100% identical, 0 lines differ
- active-directory-certificate-services — 100% identical, 0 lines differ
- active-directory-certificate-services — 100% identical, 0 lines differ
- active-directory-certificate-services — 95% identical, 4 lines differ
How it starts
The opening of the file, as written. The whole thing — 304 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: AD CS Attack Playbook — Expert Guide
AI LOAD INSTRUCTION: Expert AD CS (Active Directory Certificate Services) attack techniques. Covers ESC1 through ESC13, certificate-based persistence, NTLM relay to enrollment endpoints, and CA misconfigurations. Base models miss enrollment prerequisite chains and ESC condition combinations.
0. RELATED ROUTING
Before going deep, consider loading:
- active-directory-acl-abuse for ACL-based attacks that enable ESC4 (template modification)
- active-directory-kerberos-attacks for Kerberos techniques after obtaining certificates
- ntlm-relay-coercion for ESC8 (relay to HTTP enrollment endpoint)
- windows-lateral-movement for using obtained certificates for lateral movement
Advanced Reference
Also load ADCS_ESC_MATRIX.md when you need:
- ESC1–ESC13 quick reference table with conditions, impact, and tool commands
- One-liner exploitation commands per ESC variant
- Detection indicators per technique
1. AD CS ARCHITECTURE OVERVIEW
Certificate Authority (CA)
│
├── Enterprise CA (AD-integrated, issues certs based on templates)
│ ├── Certificate Templates (define who can enroll, what EKUs, subject settings)
│ ├── Enrollment endpoints: HTTP (certsrv), RPC, DCOM
│ └── Published in AD: CN=Public Key Services,CN=Services,CN=Configuration
│
├── Template Key Settings:
│ ├── Subject Alternative Name (SAN): who the cert represents
│ ├── Extended Key Usage (EKU): what the cert allows
│ ├── Enrollment permissions: who can request
│ └── Issuance requirements: manager approval, authorized signatures
│
└── Certificate → Kerberos Auth Flow:
User presents cert → PKINIT → KDC verifies → issues TGT
2. ENUMERATION
# Certipy (recommended — comprehensive)
certipy find -u [email protected] -p password -dc-ip DC_IP -stdout
certipy find -u [email protected] -p password -dc-ip DC_IP -vulnerable -stdout
# Certify (from Windows)
Certify.exe find
Certify.exe find /vulnerable
Certify.exe cas # Enumerate CAs
# Manual LDAP query for templates
ldapsearch -H ldap://DC_IP -D "[email protected]" -w password \
-b "CN=Certificate Templates,CN=Public Key Services,CN=Services,CN=Configuration,DC=domain,DC=com" \
"(objectClass=pKICertificateTemplate)" cn msPKI-Certificate-Name-Flag pKIExtendedKeyUsage
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.
- 9d ago First seen · 304 lines · 47 tokens per session scan A c065e6bf5006
active-directory-certificate-services is a skill published in the GitHub repository yaklang/hack-skills (2,133 stars, last pushed 2mo ago), licensed MIT. It adds 47 tokens to every session and 2,626 once invoked, about $0.0002 per session on Opus 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 2026-08-30.
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