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

Product typeBook
Published inNov 2023
PublisherPackt
ISBN-139781804611364
Edition1st Edition
Concepts
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Author (1)
Denis Isakov
Denis Isakov
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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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Clear-text credentials in the domain

In this section, we will discuss different ways to obtain credentials in clear text. However, we will not touch on things such as the password.txt file left on the share, the default set of credentials for some applications, and pushing the WDigest parameter so a password can be dumped in clear text from memory. We also will not discuss Internal Monologue attack[1] that allows to obtain credentials without touching LSASS[1]. Our focus is solely on Active Directory. We may find a very old pre-Windows 2000 computer in the domain or the domain may be vulnerable to MS14-025 with the local administrator password encrypted in a Group Policy file. We can try our luck with password spraying or by searching for a password in an Active Directory user’s comment field.

Old, but still worth trying

Recently, I came across some intriguing research published by Oddvar Moe regarding pre-created computer accounts[2]. Apparently, checking the Assign this...

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Pentesting Active Directory and Windows-based Infrastructure
Published in: Nov 2023Publisher: PacktISBN-13: 9781804611364

Author (1)

author image
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.
Read more about Denis Isakov