st4rlight (aka. Ainsetin) 🌟

Think positive, Stay healthy, Be the best
“We are what we repeatedly do. Excellence, then, is not an act, but a habit.” - Will Durant

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Hi, I’m from Republic of Korea. 🇰🇷
I’m trying to research Browser Exploitation and study Mathematics, etc.

Doing something nobody tried before is fun and considerable these days.
Collecting awesome bug’s CVE in crbug is my short term goal. 💪

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Profile

🚹 RN : Wonuk Bae (male)
🏢 STEALIEN Team Mobile Research
🚩 cat :flag_kr: / World Wide Flags / RubiyaLab CTF Player
🚩 Cold Fusion (Union Team with Koreans)
🏫 SecurityFactorial (alias S!) in sejong univ.

School 🏫

| 2019 - 2021 | Korea Digital Media High School 18th, Hacking Defense |
| 2022 - | Sejong Univ. InfoSec 22 🔎 |

Awards ✨

Algorithm & PS

• 2016-2018 Korea Olympiad of Informatics Bronze Award 🥉
• 2018 EDAILY Coding Challenge Finalist
• 2019 Kyunghee Univ. Algorithm Competition Finalist
• 2019-2020 Korea Olympiad of Informatics 4th Award
• 2020 Kookmin Univ. Algorighm Competition Finalist, 4th Award

Hacking

• The Hacking Championship Junior 2020 8th 🥉 [₩200,000]
• 2020 Youth Information Security Festival 1st 🥇
• 2021 Shakticon CTF 4th
• 2021 TRUST CTF Bronze Award 3th 🥉
• 2021 Hspace CTF 5th
• 2021 Korea High school Security Competition 2nd 🥇 [₩500,000]
• 2021 Incognito CTF 4th
• 2021 Whitehat Contest 3rd 🥉 [₩2,000,000]
• The Hacking Championship Junior 2021 🥈 2nd [₩500,000]
• 2021 Layer7 CTF 1st 🥇
• 2022 Hacktheon Sejong 3rd 🥉 [₩3,000,000]
• 2022 BISC open CTF 3rd 🥉
• 2022 Whitehat Contest general Finalist, ranked 6th
• 2022 Layer7 CTF 1st 🥇
• CODEGATE 2023 univ Finalist
• 2023 Crypto Analysis Contest, Excellence Award
• 2023 Whitehat Contest general Finalist, ranked 6th
• 2023 BISC open CTF 1st 🥇
• Hack The Drone 2024 Finals Special Award 6th
• 2024/2025 Dreamhack Invitational CTF Finalist
• CODEGATE 2025 general Finalist

CTF Results

2023 🏴‍☠️

• 2023 SSTF Hacker’s Playground 3rd 🥉
• CODEGATE 2023 local univ Finals 6th
• 2023 Whitehat Contest general Finals 6th
• 2023 HITCON CTF Finals 4th (✈️ 🇹🇼)
• 2023 BISC (BoB Information Security Conference) OpenCTF 1st 🥇

2024 🏴‍☠️

• 2024 DEFCON 32 Finals 9th (Las Vegas, USA) / Cold Fusion
• 2024 Blackhat MEA CTF Finals Qualified (Riyadh, KSA) / wanttogosauna
• 2024 Hack The Drone CTF Finals 6th / supersonic
• 2024 HITCON CTF Finals 6th (November, Taipei) / Cold Fusion

2025 🏴‍☠️

• 2025 CODEGATE general 9th, Qualified✅ / 경희로운세종대왕 (경희대 + 세종대 S! 연합) / Link
• 2025 DEFCON 33 Quals 8th, Qualified (✈️🇺🇸) / Cold Fusion / Link

Speaker 🎤

• 2021.05.15 Hspace HackTheBox Write-Up Seminar (Explaining Pwn 3, Rev 1)
• 2021.10.30 TeamH4C Hacking-note for Students Conference (학생용 해킹노트)
  : 해킹에 “관심”만 많던 내가 보안계에 이름을 알릴 수 있었던 3가지 이유
• 2022.11.02 Samsung SDS 정보보안연구회 정기 Seminar
  : As a CTF Player, As a Security Researcher

Contributions 💪

• 2021 Dreamhack UCC Featured Prob Author
• 2023 SSL(Stealien Security Leader) Mentor for Deep Understanding for Capture The Flag (CTF)
• 2023/2024 ACS CTF Quals/Finals Author
• 2025 RubiyaLabCTF Pwnable Study Mentor

Contact

Email : bww9641[@]naver.com / bww9643[@]gmail.com
Discord : st4rlight_exp (st4rlight)
Twitter(X) : @st4rlight_exp