About#

High school student interested in Web2 CTFs and Bug bounty.
Usually participates CTFs with Team Fermion

Contact#

Email: itznullbyte@gmail.com
Discord: itznullbyte
Dreamhack: nullbyte_

Bug Bounty#

Hall of Fame#

2023 Kakao Bug Bounty Hall of Fame + Special Contributor
2025 Kakao Bug Bounty Hall of Fame
2025 Patchday Dreamhack Hall of Fame

Kakao#

KV-2023-91
KV-2024-156
KV-2025-163
KV-2025-176
KV-2026-234

NASA#

488dafcb-9ee2-48e7-8938-895833f13cf5 (P5)

KERIS#

EDU PASS, NEIS PLUS Vulunerability

PatchDay#

Patchday #823 (Dreamhack)
Patchday #924 (Dreamhack)
Patchday #806 (Goorm)
Patchday #809 (Goorm)

CVE#

CVE-2025-50938

KVE#

KVE-2025-0379

Private#

REDACTED

CTF#

2025 아주대학교 데이터보안·활용융합 해킹방어대회 (COSS) - Finalist (Team 참치김치찌개)
2025 순천향대학교 정보보호 페스티벌 (YISF) - Finalist
2025 Cyber Conflict Exercise (CCE) - Finalist (Team 해킹의 정석)
2025 KAIST HackQuest - Finalist, 4th
2025 LG Uplus Security Hackathon - Finalist (Team 대성없는대성팀)
2025 Whitehat Contest - Finalist (Team Zerobyte)
2025 SCA CTF - 4th (Team ‘혜성’처럼 빛날 ‘Null’ 응원해!)
2026 Unifox CTF (UNICON) - 1st

Author#

Dreamhack - Letter Cloud (web)
Dreamhack - My Best Friend (web)
Dreamhack - Dream protocol (misc)

Code With#