130n@calvinlai.com
  • About Calvin Lai (fkclai)
  • My Work
  • Cyber Security
    • Cyber Security Centre (CSC)
      • Why we need a CSC
      • CSC Team Structure: Roles, Functions, and Tools
        • Key Function & Role
        • Tools & Platforms
        • People
        • Outsource Strategy
      • HRMC Executive Paper
  • Detection and Response
    • Playbook: Threat Prioritization & Automated Response Strategies
      • Scenario: Detecting and Mitigating a Ransomware Attack
      • Scenario: DC Sync Attack Detected and Mitigated
      • Scenario: Pass-the-Hash (PtH) Attack Detected and Contained
      • Scenario: Phishing Campaign with Malware / Credential Theft Detected and Mitigated
  • Application Architecture
    • Comparison of MVC , N-tier and Microservice Architecture
  • Application Security
    • OAuth, SAML, and OpenID Connect: Key Differences and Use Cases
    • Secure Coding Principles
    • HTTP Header Security Principles
    • Mitigating Broken Object Level Authorization (BOLA)
    • Spring Boot Validation
    • Output Encoding in JavaServer Faces (JSF)
    • Session Management Security Issues
    • Common API Security Problems
      • Broken Authentication
      • Excessive Data Exposure
      • Lack of Resources & Rate Limiting
      • Broken Function Level Authorization
      • Unsafe Consumption of APIs
    • JAVA Exception Handling
    • File Upload Validation
    • OAuth 2.0 Security
      • Insecure Storage of Access Tokens
    • Microservice Security
      • Sample Coding Demo
        • Service Implementation
        • Client Interaction
      • Security Solution for Microservices Architecture
    • Modifying and Protecting Java Class Files
      • Modify a Class File Inside a WAR File
      • Direct Bytecode Editing
        • Steps to Directly Edit a Java Class File
          • Update: Java Bytecode Editing Tools
      • Techniques to Protect Java Class Files
        • Runtime Decryption in WebLogic
    • JAVA Program
      • Secure, Concurrent Web Access Using Java and Tor
      • Creating a Maven Java project in Visual Studio Code
  • Exploit/CVE PoC
    • ZeroLogon Exploit
    • Remote Retrieved Chrome saved Encrypted Password
    • Twitter Control an RCE attack
  • Hacking Report (HTB)
    • Hits & Summary
      • Tools & Cheat Sheet
    • Windows Machine
      • Love 10.10.10.239
      • Blackfield 10.10.10.192
      • Remote 10.10.10.180
      • Sauna 10.10.10.175
      • Forest 10.10.10.161
      • Sniper
      • Json
      • Heist
      • Blue
      • Legacy
      • Resolute
      • Cascade
    • Linux Machine
      • Photobomb 10.10.11.182
      • Pandora 10.10.11.136
      • BountyHunter 10.10.11.100
      • CAP 10.10.10.245
      • Spectra 10.10.10.229
      • Ready 10.10.10.220
      • Doctor 10.10.10.209
      • Bucket 10.10.10.212
      • Blunder 10.10.10.191
      • Registry 10.10.10.159
      • Magic
      • Tabby
  • Penetration Testing
    • Web Application PenTest
    • Network/System PenTest
    • Mobile Penetration Test
      • Certificate Pinning
        • Certificate Pinning Bypass (Android)
          • Root a Android Device
          • Setup Proxy Tool - Burp Suite
      • Checklist
  • Threat Intelligence
    • Advanced Persistent Threat (APT) groups
      • North Korean APT Groups
      • Chinese APT Groups
      • Russian APT Groups
      • Other APT
  • Red Team (Windows)
    • 01 Reconnaissance
    • 02 Privileges Escalation
    • 03 Lateral Movement
    • 04 AD Attacks
      • DCSync
    • 05 Bypass-Evasion
    • 06 Kerberos Attack
    • 99 Basic Command
  • Exploitation Guide
    • 01 Reconnaissance
    • 02 Port Enumeration
    • 03 Web Enumeration
    • 04 Windows Enum & Exploit
      • Windows Credential Dumping
        • Credential Dumping: SAM
        • Credential Dumping: DCSync
      • Kerberos Attack
      • RDP
    • 05 File Enumeration
    • 06 Reverse Shell Cheat Sheet
      • Windows Reverse Shell
      • Linux Reverse Shell
    • 07 SQL Injection
    • 08 BruteForce
    • 09 XSS Bypass Checklist
    • 10 Spring Boot
    • 11 WPA
    • 12 Payload list
  • Vuln Hub (Writeup)
    • MrRobot
    • CYBERRY
    • MATRIX 1
    • Node-1
    • DPwwn-1
    • DC7
    • AiWeb-2
    • AiWeb-1
    • BrainPan
  • CTF (Writeup & Tips)
    • CTF Tools & Tips
    • Hacker One
    • CTF Learn
    • P.W.N. University - CTF 2018
    • HITCON
    • Pwnable
      • 01 Start
  • Useful Command/Tools
    • Kali
    • Windows
    • Linux
  • Offensive Security Lab & Exam
    • Lab
    • Tools for an Offensive Certification
      • Strategy for an Offensive Exam Certification
        • CVEs
        • Privilege Escalation
        • Commands
        • Impacket
  • ISO 27001
    • Disclaimer
    • What is ISO 27001
      • Implementation
    • Documentation
    • Common Mistake
    • Q&A
      • Can internal audit to replace the risk assessment
      • Is it sufficient for only the IT department head to support the ISO 27001 program
      • Does the Business Continuity Plan (BCP) and a Disaster Recovery Plan (DRP) are the same?
    • ISO 27001 Controls and Domains
      • 1. Information Security Policies
      • 2. Organization of Information Security
      • 3. Human Resource Security
      • 4. Asset Management
      • 5. Access Control
      • 6. Cryptographic Controls
      • 7. Physical and Environmental Security
      • 8: Operational Security
      • 9. Communications Security
      • 10. System Acquisition, Development, and Maintenance
      • 11. Supplier Relationships
      • 12: Information Security Incident Management
      • 13. Information Security Aspects of Business Continuity Management
      • 14. Compliance
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On this page
  • What is DCSync
  • How DCSync Attack Minchanism
  • Walkthrough on DCSYNC Attack

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  1. Exploitation Guide
  2. 04 Windows Enum & Exploit
  3. Windows Credential Dumping

Credential Dumping: DCSync

May 2022

What is DCSync

DCSync is used to replicate the Active Directory (AD) Objects among the AD Servers to maintain the data consistency at the organization if there are multiple Domain Controllers (DC) of their AD Servers. Microsoft feature Directory Replication Service (DRS) Remote (MS-DRSR) Protocol that is used to replicate user's data from one DC to another.

How DCSync Attack Minchanism

Walkthrough on DCSYNC Attack

PreviousCredential Dumping: SAMNextKerberos Attack

Last updated 3 years ago

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