Individual skill
pentesting-kerberos
Testing the Kerberos authentication service (88/tcp and 88/udp) in Active Directory during authorized engagements. Covers username enumeration (kerbrute, nmap krb5-enum-users), AS-REP roasting of accounts without pre-auth, Kerberoasting service accounts (GetUserSPNs), password spraying, TGT acquisition (kinit) for Kerberos-only environments, krb5.conf generation, clock-skew handling, and MS14-068 ticket forgery.
internal/tools/skills/data/network-services-pentesting/pentesting-kerberos/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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Repository context
- Repository stars (not skill ratings)
- 1,329
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- network-services Declared skill tag
- kerberos Declared skill tag
- active-directory Declared skill tag
- as-rep-roast Declared skill tag
- kerberoast Declared skill tag
- security Derived category
- testing Derived category
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# Pentesting Kerberos (port 88)
## When to Use
- During authorized Active Directory assessments when TCP/UDP 88 is open (a domain controller)
- When you need to enumerate valid usernames without authentication
- When testing for AS-REP roastable accounts (no Kerberos pre-auth) and Kerberoastable service accounts
- When NTLM is disabled and you must authenticate to SMB/WinRM/etc. via Kerberos (ccache TGT)
- When validating credentials via password spraying with low lockout risk
## Quick Enumeration
```bash
# Confirm Kerberos / identify the DC