Top 5 anti-debugging open source projects

Advanced usermode anti-anti-debugger. Forked from https://bitbucket.org/NtQuery/scyllahide

Public malware techniques used in the wild: Virtual Machine, Emulation, Debuggers, Sandbox detection.

ProTecT is an MS-DOS packer. While this packer is outdated, it uses a number of interesting anti-analysis techniques that are still relevant today.

A collection of c++ programs that demonstrate common ways to detect the presence of an attached debugger.

ice9 - is anticheat based on usermode tricks and undocumented methods , builded as dll for loading trought the shibari framework