An multi-layer obfuscated powershell script
De-obfuscating powershell and craving data out of EVTX files
An obfuscated VBScript with an interesting way of encoding data
Yet another obfuscated python code, but now in a binary
A multi-stage payload that mimics some actual malware
A lot of rabbit holes in this ones
One obscure encoding, and an entirely novel encoding of data
A simple questionnaire based challenge on linux basics
A wild goose hunt in a web server
A simulation of time-based side channel attack. Quite interesting.