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Jonas Bülow Knudsen

Jonas Bülow Knudsen
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Posts By SpecterOps Team Members

ADCS Attack Paths in BloodHound — Part 2

In this blog post, we will cover how we have incorporated the Golden Certificates and the ADCS ESC3 abuse technique in BloodHound.

May 1

ADCS Attack Paths in BloodHound — Part 2

May 1

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

Pwned by the Mail Carrier

How MS Exchange on-premises compromises Active Directory and what organizations can do to prevent that

Mar 20

Pwned by the Mail Carrier

Mar 20

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

ADCS ESC14 Abuse Technique

The altSecurityIdentities attribute of Active Directory (AD) computers and users allows you to specify explicit certificate mappings. An…

Feb 28

ADCS ESC14 Abuse Technique

Feb 28

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

ADCS ESC13 Abuse Technique

It is possible to configure an Active Directory Certificate Services (ADCS) certificate template with an issuance policy having an OID…

Feb 14

ADCS ESC13 Abuse Technique

Feb 14

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

ADCS Attack Paths in BloodHound — Part 1

Since Will Schroeder and Lee Christensen published the Certified Pre-Owned whitepaper, the BloodHound Enterprise team at SpecterOps has…

Jan 24

ADCS Attack Paths in BloodHound — Part 1

Jan 24

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

What is Tier Zero — Part 2

Round 2!

Sep 14, 2023

What is Tier Zero — Part 2

Sep 14, 2023

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

What is Tier Zero — Part 1

Tier Zero is a crucial group of assets in Active Directory (AD) and Azure. Its purpose is to protect the most critical components by…

Jun 22, 2023

What is Tier Zero — Part 1

Jun 22, 2023

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

FOSS BloodHound 4.3.1 release

We are excited to share the release of BloodHound version 4.3.1. We have accepted a lot of pull requests made by BloodHound users for bug…

May 23, 2023

FOSS BloodHound 4.3.1 release

May 23, 2023

Jonas Bülow Knudsen
in
Posts By SpecterOps Team Members

Establish security boundaries in your on-prem AD and Azure environment

Preventing escalation from initial access in your Active Directory (AD) environment to Domain Admins can feel impossible, especially after…

Jun 20, 2022

Establish security boundaries in your on-prem AD and Azure environment

Jun 20, 2022

Jonas Bülow Knudsen

Setup RDP to DC from jumphost/PAW only — with IPSec

Also published on: https://improsec.com/tech-blog/setup-rdp-dc-jumphost-paw-ipsec

Apr 1, 2020

Setup RDP to DC from jumphost/PAW only — with IPSec

Apr 1, 2020

Jonas Bülow Knudsen

Jonas Bülow Knudsen

Product Architect @ SpecterOps

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