About

Interests

• Binary Analysis
• Computer Architecture
• Game Security

Work Experiences

• S2W
  • Threat Analysis Team (BLKSMTH)
  • Senior Researcher
  • 2023.04 ~ Present
  • Threat Intelligence, Focusing on Malware Analysis
    • Detailed Analysis of DarkGate; Investigating new top-trend backdoor malware
    • RustDoor and GateDoor: A New Pair of Weapons Disguised as Legitimate Software by Suspected Cybercriminal

Education

• Korea Advanced Institute of Science and Technology (KAIST)
  • M.S. Graduate School of Information Security
  • SoftSec Lab (Advisor : Sang Kil Cha)
  • 2021.03 ~ 2023.02
  • was student leader of SoftSec Lab
    • 2021.03 ~ 2023.02
• Korea Advanced Institute of Science and Technology (KAIST)
  • B.S. Advanced major on Computer Science
  • 2016.03 ~ 2020.08
• Jeonbuk Science High School
  • 2014.03 ~ 2016.02

Experiences

• Member of KAIST GoN
  • 2016.03 ~ Present
  • was leader of KAIST GoN
    • 2018.03 ~ 2019.02
• Member of Super Guesser
  • 2021.07 ~ Present
• KITRI BoB 5th - 취약점분석 트랙
  • 2016.07 ~ 2016.12
• Student Senior, KAIST Computer Emergency Response Team (CERT)
  • 2017.07 ~ 2020.01

Publication

1. BotScreen: Trust Everybody, but Cut the Aimbots Yourself (link)
   • Minyeop Choi, Gihyuk Ko, and Sang Kil Cha
   • USENIX Security ‘23 Distinguished Paper Award
   • Posted in KAIST Breakthroughs Spring 2024 Vol. 22
2. Secrets of Gosu: Understanding Physical Combat Skills of Professional Players in First-Person Shooters (link)
   • Eunji Park, Sangyoon Lee, Auejin Ham, Minyeop Choi, Sunjun Kim, and Byungjoo Lee
   • ACM CHI 2021 Honorable Mention Award

Capture The Flag

Only wrote noteworthy CTFs which I contributed to.

Participated

• DEFCON 32 CTF
  • Finalist, Hypeboy
• DEFCON 27 CTF
  • Finalist, KaisHack GoN
• DEFCON 26 CTF
  • Finalist, KaisHack PLUS GoN
• Plaid CTF 2024
  • 1st, Hypeboy
• Plaid CTF 2018
  • 4th, KaisHack+PLUS+GoN
• SECCON CTF 2023 International Finals
  • 5th, Super Guesser
• SECCON CTF 2022 International Finals
  • 5th, Super Guesser
• SECCON 2020 OnlineCTF
  • 1st, HangulSarang
• SECCON CTF 2016
  • Finalist, KAIST GoN
• CODEGATE CTF 2022 General Division
  • 3rd, 본선 온라인 기원
• CODEGATE CTF 2019 University Division
  • 3rd, KAIST GoN
• CODEGATE CTF 2018 University Division
  • 1st, KAIST GoN
• zer0pts CTF 2021
  • 2nd, K-Students
• TokyoWesterns CTF 6th 2020
  • 1st, D0G$
• LINE CTF 2022
  • 2nd, Super HexaGoN
• BLACKHAT MEA CTF 2022 Final
  • 2nd, {{7*7}}
• Midnight Sun CTF 2020
  • Finalist, GoN x zer0pts

Organized

• WACON 2023
• WACON 2022
• Cyber Operation Contest 2020
• CODEGATE CTF 2020
• Cyber Operation Contest 2019
• Samsung CTF 2018

Contributions

• ICSE 2020
  • Committee Member in Live! Team Korea within the Virtualization-track

etc

• Operating private game clan “백병원”
  • Joined 2018.10
  • Currently clan leader since 2020.06