About

About

Name: Jimin Jeong

Nickname: mini-chip

Contact

Education

Korea University (2022.04 ~ ) — Department of Cyber Defense

Affiliation

CyKor — KU hacking club and hacking team

Career

  • Theori — Dreamhack Content Intern Researcher (2025.03 ~)

CTF Achievements

Highlights

  • DEFCON 32 — Finalist (Team Cold Fusion)
  • DEFCON 33 — Finalist (Team Cold Fusion)
  • DEFCON 34 — Finalist (Team Cold Fusion)
  • HITCON 2025 — 4th (Team CTF Demon Hunter)
  • Blue Water CTF 2024 — 2nd (Team CyKor)

Placements

  • CCE 2025 — 2nd, General Division (Team 초코민트 요리모 미니칩)
  • Whitehat Contest 2025 — 1st, University Division (Team 무관탈출넘버원)
  • LG Uplus CTF 2024 — 2nd (Team roKyC)
  • Hacktheon Sejong 2026, Advanced — 4th (Team 02vs04)
  • Lake CTF 24-25 — Finalist (Team CyKor)
  • Lake CTF 25-26 — Finalist (Team CyKor)
  • R3CTF 2025 — 7th (Team CyKor)
  • UIUCTF 2025 — 7th (Team CyKor)

Focus

I primarily study reverse engineering, with a strong interest in game hacking, software obfuscation, and code-concealment techniques. I am particularly interested in how programs can be made more difficult to understand, analyze, and reconstruct, as well as how hidden execution mechanisms can be designed outside conventional control-flow and code representations.

I also occasionally study system exploitation and vulnerability-driven behavior, especially when unintended program or system behaviors can be repurposed as building blocks for obfuscation, anti-analysis, or code-hiding techniques. My broader interests include binary analysis, runtime internals, low-level program behavior, and the design of unconventional execution mechanisms.

I enjoy wargaming, mostly on a site called Dreamhack. Here is my Dreamhack profile.