CTFs I built
Capture The Flag challenges I designed at Cymulate and Matrix.
A forensics and cryptography challenge I authored on the CTFlearn platform.
A recruiting CTF blending virtual and physical space: candidates raced a real bomb timer in the office (webcam-monitored), defusing it through escalating challenges across reversing, pwn, mobile, cryptography and forensics.
Matrix CTF (2022)
The 2022 recruiting edition, expanded with a new Misc category and an approachable Warmup tier to ease players in, alongside pwn, reversing, mobile and crypto challenges.
Binushka
A reverse-engineering CTF built around nested "matryoshka"-style binaries (bin + ushka), run at Cymulate's Black Hat USA 2022 booth.
A multi-stage CTF on attacking and securing the Model Context Protocol (MCP) and AI-driven systems — filesystem, database, API and tool abuse — built on real MCP vulnerabilities disclosed by Cymulate. Five stages, with the final stage at Black Hat USA 2025.
CTF background
Over five years competing in CTFs with the CamelRiders team, excelling in Reversing, Pwn, Mobile, Cryptography and Forensics.
Public challenge write-ups (CTFLearn and more): github.com/EladBeber/CTFlearn-Writeups
CTF and reversing videos: YouTube (@EladBeber)