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Pentesting Active Directory and Windows-based Infrastructure

You're reading from Pentesting Active Directory and Windows-based Infrastructure

Product type Book

Published in Nov 2023

Publisher Packt

ISBN-13 9781804611364

Pages 360 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Denis Isakov

Table of Contents (13) Chapters

Preface

1. Chapter 1: Getting the Lab Ready and Attacking Exchange Server

2. Chapter 2: Defense Evasion

3. Chapter 3: Domain Reconnaissance and Discovery

4. Chapter 4: Credential Access in Domain

5. Chapter 5: Lateral Movement in Domain and Across Forests

6. Chapter 6: Domain Privilege Escalation

7. Chapter 7: Persistence on Domain Level

8. Chapter 8: Abusing Active Directory Certificate Services

9. Chapter 9: Compromising Microsoft SQL Server

10. Chapter 10: Taking Over WSUS and SCCM

11. Index

Why subscribe?

12. Other Books You May Enjoy

DCSync

DCSync uses the domain controller’s API to emulate the replication process from a remote domain controller. DCSync, in a nutshell, performs a DsGetNCChanges operation from a domain controller via an RPC request to the Directory Replication Service API (DRSUAPI). This attack requires extended privileges, DS-Replication-Get-Changes and DS-Replication-Get-Changes-All, which are assigned by default only to the “Domain Controllers”, “Domain Admins”, “Administrators”, and “Enterprise Admins” groups in the domain.

If we were able to compromise the user with extended privileges, we could run secretsdump to obtain all hashes in the domain:

/usr/bin/impacket-secretsdump -outputfile 'something' 'essos'/'daenerys.targaryen':'BurnThemAll!'@'192.168.56.12'

The output produced by the preceding command is shown in the following screenshot:

Figure...

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Authors (1)

Denis Isakov

Denis Isakov is a passionate security professional with 10+ years of experience ranging from incident response to penetration testing. He worked in various industries, including banking and consultancy. Denis is specialized in offensive security with particular focus on Active Directory and adversary malware. He has earned a Master's degree in Information Systems and Technologies in 2012. Additionally, Denis has achieved an array of industry certifications ranging from OSCP to GXPN. Outside of computers, Denis enjoys sports and discovering new places.

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