Hello, I'm Ethan Cho.

Summary

Cybersecurity-focused student with strong experience in C/C++, Node.js, and server administration. Passionate about systems programming and ethical hacking with hands-on experience in reverse engineering, web security, and low-level Linux tooling.

Skills

Languages: C, C++, Rust (learning), JavaScript (Node.js), Python, HTML/CSS
Tools & Tech: Docker, Nginx, MySQL, MongoDB, GDB, pwndbg, Bettercap
Concepts: Reverse engineering, System programming, Web security (XSS, SQLi, IDOR), Networking (WOL, SSH, DNS)

Projects

devutil - CLI Developer Toolkit

C, Linux - 2025

Built a terminal-based tool with Unix time converter, Base64 encoder/decoder, JWT parser, QR generator, and more.
Designed for simple installation in `/bin` and supports auto-update via own server fetch.

rule-breaker - Discord Gambling Bot

Node.js - 2025

Developed a gambling bot with coin flips, lottery logic, and user stats tracking via SQLite.
Handled Discord interactions and secure input validation.

Education

Korea Digital Media High School - Hacking Defense

2025 - Present

Specialized in cybersecurity, system programming, and Capture The Flag (CTF) challenges.

CTF & Activities

Participated in Dreamhack, picoCTF, and school-wide CTFs with a focus on web, reversing, and pwn.
Notable exploits include bypassing filters via prototype pollution and exploiting ARP spoofing using Bettercap.

Ethan Won Cho

Summary

Skills

Projects

Education

CTF & Activities