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Spooky Authentication at a Distance

Tamás Jos

Tamás Jos presents a post-exploitation technique to proxy Windows authentication protocols remotely without elevated privileges, enabling full domain takeover.

Summary

Remote Authentication Proxying in Windows

Traditional credential harvesting requires dumping memory or executing high-privilege code on target machines, often triggering immediate EDR detections.

Unprivileged Post-Exploitation Relay Techniques

Tamás Jos introduces an unprivileged post-exploitation technique that proxies native Windows authentication protocols across remote network connections directly to an operator's workstation.

Complete User Impersonation Without Local Elevated Access

By establishing an authentication bridge, red-team operators can execute actions with the target user's identity across Active Directory services without touching local system credentials.

Zero-Interaction Domain Takeover via Malicious Peripherals

A live demonstration illustrates full domain takeover using a plug-and-play malicious hardware peripheral in a restricted environment without requiring user interaction.

Related talks

Main Stage·21 min

  • DEF CON
  • Red Team
  • Date: Aug 2025
  • Location: Las Vegas

Antoine Goichot

Discloses subtle logic and authorization bypasses in Microsoft Windows Local Administrator Password Solution (LAPS) that enable credential theft.

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