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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

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12. Other Books You May Enjoy

Certificate theft

This section will focus on certificate theft at the endpoint. If AD CS is deployed in the environment, chances are high that certificates are being used for domain authentication. Windows uses a certificate in .pfx format, which contains the certificate itself and the corresponding private key. However, private keys can be stored separately – for example, on specialized hardware such as Trusted Platform Modules (TPMs), Hardware Security Modules (HSMs), or smart cards. Most companies do not introduce hardware elements, and keys are stored in the operating system. Windows protects keys with the help of the Data Protection Application Programming Interface (DPAPI). For the demonstration, let us issue the khal.drogo user certificate with a non-exportable private key. We can do it via the Certificates snap-in in Microsoft Management Console (MMC). Now, we are ready to start with the practice.

THEFT1 – Exporting certificates using the CryptoAPI

There...

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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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