cyber security companies | penetration testing | managed security service provider | cyber security consultant
August 2, 2021

Dumping Active Directory Credentials

All Active Directory user account password hashes are stored inside the ntds.dit database file on the Domain Controllers. However, if you have ever tried copying the file, you’ll probably have received the following error message. Well as it turns out, the LSASS process has already opened the file, and when it called CreateFileW to open… Continue reading Dumping Active Directory Credentials

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cyber security companies | penetration testing | managed security service provider | cyber security consultant
June 22, 2021

Bypassing LSA Protection (aka Protected Process Light) without Mimikatz on Windows 10

Starting with Windows 8.1 (and Server 2012 R2) Microsoft introduced a feature termed LSA Protection. This feature is based on the Protected Process Light (PPL) technology which is a defense-in-depth security feature that is designed to “prevent non-administrative non-PPL processes from accessing or tampering with code and data in a PPL process via open process… Continue reading Bypassing LSA Protection (aka Protected Process Light) without Mimikatz on Windows 10

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cyber security companies | penetration testing | managed security service provider | cyber security consultant
July 6, 2020

Bypassing CrowdStrike Endpoint Detection and Response

In a recent engagement I had to compromise a hardened desktop running CrowdStrike and Symantec Endpoint Protection. The initial code execution method was my reliable favourite MSBuild (C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe) which could be leveraged to execute C# code as an inline task. Initially I wrote a very basic loader that used a bruteforce decryption algorithm to run… Continue reading Bypassing CrowdStrike Endpoint Detection and Response

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cyber security companies | penetration testing | managed security service provider | cyber security consultant
May 14, 2020

Capturing and Relaying NTLM Authentication: Methods and Techniques

This blog post will provide an overview of the methods available to force NTLM authentication to a rogue server, and capture or relay the credential material. These attacks can be leveraged to escalate privileges within an Active Directory domain environment. I like to look at these attacks as having 3 stages which are: Positioning a… Continue reading Capturing and Relaying NTLM Authentication: Methods and Techniques

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cyber security companies | penetration testing | managed security service provider | cyber security consultant
May 11, 2020

Game Over Privileges

On Windows a privilege is the right of an account, such as a user or group account, to perform various system-related operations on the local computer. There are 36 privileges defined in the Privilege Constants although a number are used internally by the operating system. There are a number of privileges that are considered game over, in… Continue reading Game Over Privileges

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