Reversing.kr
Crack programs for Windows, Linux, .NET, Java and more
Reversing.kr is a set of reverse engineering challenges. You download a program, study how it works, and find the hidden key or password. The challenges cover many environments: Windows, Linux, .NET, Flash, Java, Python and mobile.
Free · Desktop · Intermediate
About Reversing.kr
It trains cracking and code analysis across different platforms and file types. Some challenges are simple, and others need real reverse engineering experience, so it suits people who have used a disassembler before.
The site is still online, but the latest notice dates from 2014, so do not expect new challenges. It asks you to log in or join to take part.
On Breakpoint since 23 Oct 2026.