Security Bsides Las Vegas 2024

Ryan O'Donnell

Ryan O'Donnell is a Red Team Operator at Altus Consulting. Over the last 12+ years, Ryan has been performing Penetration Tests, Red Team assessments, and Incident Response investigations. Ryan has conducted workshops at Hack Space Con and Bsides Nova. Ryan has a Masters in Computer Forensics from GMU and the following Certifications: OSCP, OSEP, CRTO, GREM, GCFE, GCIH, CRTO.


Session

08-06
10:30
240min
Modifying Impacket for Better OpSec
Ryan O'Donnell

Operational security (OpSec) is a cornerstone in red teaming, necessitating continuous refinement of tools and techniques to avoid detection. This workshop is designed for penetration testers, aspiring red teamers, and individuals seeking to enhance their offensive capabilities. It focuses on customizing the Impacket toolset to improve OpSec during engagements.

Impacket tools such as wmiexec, smbexec, and secretsdump are staples in the toolkit of any red teamer due to their versatility and flexibility in Windows environments. However, their detectability has increased as defensive measures have become more sophisticated. This session proposes modifications to these tools to avoid default IOCs and detections.

Participants will explore various customization strategies, including changing default settings, altering network signatures, and integrating stealthier execution methods. Practical exercises will guide attendees through the process of modifying the Impacket scripts, demonstrating how these changes can significantly enhance operational security in simulated environments.

Attendees will gain hands-on experience modifying the Impacket tool set to remove common IOCs. The workshop aims to foster a deeper understanding of both the tools and the underlying network protocols, enabling participants to tailor their approaches to specific operational contexts and defensive landscapes.

Training Ground
Diamond