Speaker

Valdemar Carøe

Valdemar Carøe

Security Researcher @ SpecterOps

Copenhagen, Denmark

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Security researcher with a passion for dissecting software to understand its inner workings as well as an odd habit of optimizing proof-of-concept code for no apparent reason.

Area of Expertise

  • Information & Communications Technology
  • Physical & Life Sciences

Topics

  • Cybersecurity
  • Offensive Security
  • Red Teaming
  • Reverse Engineering
  • Binary Exploitation

Compromising Entra ID from the on-premises Active Directory in hybrid environments.

Ever more companies are getting acquainted with the cloud, and Entra ID (previously Azure AD) is gaining traction as an alternative to hosting on-premises Active Directory environments. In many cases, companies are not ready to make a definitive jump from on-premises to the cloud, so they opt-in for a hybrid setup, in which both the on-premises Active Directory and the cloud-based Entra ID are intertwined.

As red teamers and penetration testers, it is our duty to keep up with the ever-evolving market of technologies, but unfortunately, techniques and procedures for compromising an Entra ID environment (in a hybrid setup) are scarce and often poorly documented.

In this talk, I will shed light on how the on-premises Active Directory environment in a hybrid setup can often lead to a compromise of the Entra ID cloud environment.

I will demonstrate various Entra ID misconfigurations and attacks that I have personally seen and used in real engagements.

Catching Credential Guard Off Guard

Dive into the nitty gritty of how NTLM, Kerberos, Credential Guard and various security protocols for RDP works - and learn how to weaponize this information to bypass Credential Guard and accomplish credential dumping on modern systems with contemporary security features enabled.

Valdemar Carøe

Security Researcher @ SpecterOps

Copenhagen, Denmark

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