Hi! I currently do Mobile Security @ Riscure, specifically in the area of mobile payments. In general, I am interested in the following areas:

• Software Engineering (C++, Rust, Java, ...)
• Software Security
• Reverse Engineering
• Malware Analysis
• Game Hacking & Modding

Education

• MSc Computer Security @ Vrije Universiteit
  • Thesis: Environmental Fuzzing for Malware Evasion
• BSc Computer Science @ University of Crete
  • Thesis: Reverse Engineering Federated Learning Models through Side Channels

Challenges

I enjoy writing CTF challenges as much as I enjoy playing them, so here is a list of some of my reverse engineering challenges that were used in various HackTheBox CTFs:

• [Insane] License Generator (Malware w obfuscated shellcode, C2 traffic, anti-debug, API hash resolving, custom multi layer encryption)
  • A university presentation a player made on the challenge: https://slides.com/d/QAYzZig/live
• [Hard] Vessel Cartographer (Malware w anti-debug, API hash resolving, shellcode AES)
• [Medium] Alien Saboteur (Virtual-Machine obfuscated crackme)
• [Easy] Intelligence Service (Control flow obfuscation through indirect calls, return address obfuscation)

Contact

GitHub: https://github.com/verd1c