Hack.lu 2017 Let’s Play with WinDBG & .NET by Paul Rascagneres

Let’s Play with WinDBG & .NET by Paul Rascagneres .NET is an increasingly important component of the Microsoft ecosystem providing a shared framework. Many Microsoft tools, such as PowerShell, rely on the .NET platform for their functionality. Obviously, this makes .NET an enticing language for malware developers too. Hence, malware researchers must also be familiar with the language and have the necessary skills to analyse malicious software that runs on the platform. During the presentation, I will explain how to automate .NET analysis with WinDBG the Microsoft debugger. To illustrate my talk, I will show how to analyse PowerShell scripts with WinDBG and how to automatically unpack a .NET packer family discovered recently. The presentation includes several live demo on WinDBG usage in this specific context. Bio: Paul Rascagneres Paul is a security researcher within Talos, Cisco’s threat intelligence and research organization. As a researcher, he performs investigations to identify new threats and presents his findings as publications and at international security conferences throughout the world. He has been involved in security research for 7 years, mainly focusing on malware analysis, malware hunting and more specially on Advanced Persistence Threat campaigns and rootkit capabilities. He previously worked for several incident response team within the private and public sectors.