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adcs-esc1

Exploit Active Directory Certificate Services ESC1 — vulnerable template allows arbitrary SAN, enabling user impersonation up to domain admin.

packages/decepticon/decepticon/skills/standard/ad/adcs-esc1/SKILL.md

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Nov 2, 2026

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Repository last updated
Nov 7, 2026
License
Apache-2.0

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# ADCS ESC1 Exploitation

ESC1 is the most common ADCS misconfig: a certificate template with
**ENROLLEE_SUPPLIES_SUBJECT** set, allowing any enrollee to request a
cert for any user. Pair with **Client Authentication** EKU → authenticate
as that user via PKINIT → instant domain admin.

## 1. Enumerate templates
```bash
# Certipy (preferred)
certipy find -u USER@DOM -p 'PASS' -dc-ip DC_IP \
  -output /tmp/adcs -text -stdout > /tmp/adcs.txt

# Or check JSON