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Education

2025.03 - Current
KYUNGHEE UNIVERSITY

M.S. in Department of Computer Engineering

PWNLAB (Lab Leader) · Advisor: Prof. Daehee Jang

2019.03 - 2025.02
KYUNGHEE UNIVERSITY

B.S. in Department of Software Convergence

Experience

2024.01 - Current
PWNLAB Lab Leader

Kyung Hee University Dept. of Computer Engineering

  • macOS kernel Bluetooth chipset firmware analysis and mitigation bypass research Details →
  • Microsoft Exchange Server vulnerability research Details →
  • Windows kernel local privilege escalation research and exploit development
    Concurrent LLM / MCP prompt-engineering for offensive tooling
    Details →
  • Android kernel MTE (Memory Tagging Extension) bypass research Details →
  • Satellite signal reception (X/S/UHF/VHF SDR) and commercial ground station vulnerability research Details →
  • Drone (DJI / PX4) firmware vulnerability analysis and security tooling Details →
  • Open-source ground station vulnerability research with live SDR validation Details →
2025.07 - 2025.08
GMO CyberSecurity by Ierae Internship
  • Co-developed CCSDS protocol firewall prototype for the satellite ground station and OBC uplink.
    Live-demoed at DEFCON 33 Aerospace Village (Las Vegas, Bahrain).
    Details →
  • Submitted "CCSDS based Firewall for Modern Satellite System" to Computers & Security (SCI), currently under review. Details →
2022.03 - 2023.12
HAYYIM SECURITY Security Researcher
  • WinAFL-based fuzzing harness for Office document parser dll. Details →
  • Browser vulnerability research targeting renderer / IPC attack surfaces. Details →
  • Antivirus exploit and bypass research. Details →
  • RDP protocol vulnerability research and exploitation. Details →
  • Disclosed two RCEs to KISA Bug Bounty — KVE-2023-0095, KVE-2023-5125. Details →

Publications

리뷰중
"CCSDS based Firewall for Modern Satellite System"

Computers & Security (SCI)

Woohyeop Im, Gyeongje Oh, Shinichi Kan, Kosuke Ito, Hikohiro Lin, Sayeon Kim, Jinwoo Jeong, Sangbom Yun, Daehee Jang

2026.05
"인공위성 RF 신호 생성을 통한 오픈소스 지상국 시스템 취약점 연구"

정보보호학회 (KCI) · PDF

오경제, 장대희

Bug Bounty

KVE-2023-0095, KVE-2023-5125

Remote Code Execution via Heap Overflow in Viewer ($3,100)

Talks

2026.05 / 2026.07
정보보호학회 2026 · 코드엔진 2026

"인공위성 RF 신호 생성을 통한 오픈소스 지상국 시스템 취약점 연구"

2025.08 / 2025.11
DEFCON 33 Aerospace Village (Las Vegas, Bahrain)

"CCSDS based Firewall for Modern Satellite System"

Remarks

2020.04 - 2022.01
Republic of Korea Air Force

MOS: Information Security

2018.03 - 2019.02
Best of the Best 7th

KITRI · Vulnerability Analysis Track · Certificate

CTF Challenge Author / Organizer: International Drone CTF (2023 / 2024)

Wargame: Reversing.kr (All Clear) · xcz.kr (All Clear)

*****
Contact: ogj0824@gmail.com