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mukul975/anthropic-cybersecurity-skills

conducting-pass-the-ticket-attack

Perform Pass-the-Ticket (PtT) lateral movement by extracting Kerberos TGT/TGS tickets from LSASS memory on a compromised host and injecting them into another session to impersonate the ticket owner without knowing their password.

First seen Mar 15, 2026

Installation

$ npx skills add mukul975/anthropic-cybersecurity-skills --skill conducting-pass-the-ticket-attack
View on skills.sh ↗ GitHub repository ↗

Summary

  • Perform Pass-the-Ticket (PtT) lateral movement by extracting Kerberos TGT/TGS tickets from LSASS memory on a compromised host and injecting them into another session to impersonate the ticket owner without knowing their password.
  • Use during authorized post-exploitation to move laterally or escalate access via stolen Kerberos tickets, or to validate detections for Kerberos ticket theft and reuse.

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More details

Agent compatibility

Declared targets from SKILL.md / docs. Unmarked agents are not listed — the skill may still install via the CLI.

Claude Code Not declared
Cursor Not declared
Codex Not declared
GitHub Copilot Not declared
Windsurf Not declared
Gemini CLI Not declared
Cline Not declared
OpenCode Not declared

Repository health

Stars 32.4K
License LICENSE
Default branch main
Open issues 20
Status Active

Skill metadata

Parsed from SKILL.md frontmatter.

Version1.0
LicenseApache-2.0

Package contents

Files included with this skill beyond the listing page.

  • skill md SKILL.md 4,056 B
  • docs SUMMARY.md 439 B

History

  1. First seen on skills.sh
  2. First recorded snapshot · 147 installs

SKILL.md

Conducting Pass-the-Ticket Attack

Legal Notice: This skill is for authorized security testing and educational purposes only. Unauthorized use against systems you do not own or have written permission to test is illegal and may violate computer fraud laws.

Overview

Pass-the-Ticket (PtT) is a lateral movement technique that uses stolen Kerberos tickets (TGT or TGS) to authenticate to services without knowing the user's password. By extracting Kerberos tickets from memory (LSASS) on a compromised host, an attacker can inject those tickets into their own session to impersonate the ticket owner and access resources as that user.

When to Use

  • When conducting security assessments that involve conducting pass the ticket attack
  • When following incident response procedures for related security events
  • When performing scheduled security testing or auditing activities
  • When validating security controls through hands-on testing

Prerequisites

  • Familiarity with red teaming concepts and tools
  • Access to a test or lab environment for safe execution
  • Python 3.8+ with required dependencies installed
  • Appropriate authorization for any testing activities

MITRE ATT&CK Mapping

  • T1550.003 - Use Alternate Authentication Material: Pass the Ticket
  • T1003.001 - OS Credential Dumping: LSASS Memory
  • T1558 - Steal or Forge Kerberos Tickets
  • T1021.002 - Remote Services: SMB/Windows Admin Shares

Workflow

Phase 1: Ticket Extraction

  1. Gain local admin access on target workstation
  2. Dump Kerberos tickets from LSASS memory using Mimikatz or Rubeus
  3. Export tickets in .kirbi format (Mimikatz) or base64 (Rubeus)
  4. Identify high-value tickets (Domain Admin TGTs, service tickets to critical systems)

Phase 2: Ticket Injection

  1. Purge existing Kerberos tickets from attacker session
  2. Import/inject stolen ticket into current session
  3. Verify ticket is loaded and valid
  4. Access target resources using injected ticket

Phase 3: Lateral Movement

  1. Access remote systems using the stolen ticket identity
  2. Perform actions as the impersonated user
  3. Collect additional credentials from accessed systems
  4. Document evidence of successful lateral movement

Tools and Resources

Tool Purpose Command
Mimikatz Ticket export/import sekurlsa::tickets /export, kerberos::ptt
Rubeus Ticket dumping and injection dump, ptt, tgtdeleg
Impacket ticketConverter Convert between formats ticketConverter.py ticket.kirbi ticket.ccache
Impacket psexec/smbexec Remote execution with ticket KRB5CCNAME=ticket.ccache psexec.py

Detection Indicators

  • Event ID 4768 with unusual client addresses
  • Event ID 4769 service ticket requests from unexpected hosts
  • TGT usage from different IP than the TGT was issued to
  • Multiple authentications from same ticket across different workstations

Validation Criteria

  • Kerberos tickets extracted from compromised host
  • Tickets injected into attacker session
  • Lateral movement demonstrated using stolen tickets
  • Evidence captured for reporting