ABOUT
ABOUT
ABOUT
ABOUT
ABOUT
ABOUT
ABOUT
About me

Hello! This is Shirajuki, a fullstack software developer and CTF player from Lillehammer, Norway.

X (Twitter): @shirajukii
Github: @shirajuki
Developer portfolio: jonny.ngoluong.no

Capture-the-flag

I occasionally play CTF with my friends and teammates at @Iku-toppene , @bootplug , @corax and @RumbleInTheJungle . I am especially interested in web, misc, pwn and jails. Outside from cybersecurity and hacking, I usually do web and mobile development.

2025

NNS CTF 2025 | 🥈 (Team: Iku-toppene)
Sikkerhetsfestivalen 2025 CTF | Challenge Author
NahamCon CTF 2025 | 🥇 (Team: dugnad)
Cyberlandslaget (NCSC) 2025 Semi-Finals (senior) | 🥇 (individual)
x3CTF 2025 (feat. mvm) | 🥈 (Team: Carixo nr. 1)

2024

Blue Water CTF 2024 | 6th (Team: Iku-toppene)
DefCamp Capture the Flag (D-CTF) 2024 Finals | 12th (Team: Iku-toppene)
Equinor CTF 2024 | 8th (Team: Iku-toppene)
Telia Cyber Battle of Nordic-Baltics 2024 Finals | 🥈 (Team: Iku-toppene)
Telia Cyber Battle of Nordic-Baltics 2024 Quals | 🥇 (Team: Iku-toppene)
DefCamp Capture the Flag (D-CTF) 2024 Quals | 8th (Team: Iku-toppene)
idekCTF 2024 | 10th (Team: Iku-toppene)
WaniCTF 2024 | 🥇 (Team: Iku-toppene)
RITSEC CTF 2024 | 🥇 (Team: Iku-toppene)
UNbreakable International 2024 | 🥇 (Team: Iku-toppene)
1753CTF 2024 | 🥈 (Team: Iku-toppene)
Pearl CTF | 🥈 (Team: Iku-toppene)
Sikkerhetsfestivalen 2024 CTF | Challenge Author
Cyberlandslaget (NCSC) 2024 Semi-Finals | 🥇 (Individual)
DEF CON 32 CTF Quals | 15th (Team: NorseCode)

2023

DefCamp Capture the Flag (D-CTF) 2023 Finals | 5th (Team: Iku-toppene)
Equinor CTF 2023 | 🥈 (Team: Iku-toppene)
DefCamp Capture the Flag (D-CTF) 2023 Quals | 12th (Team: Iku-toppene)
ISITDTU CTF 2023 Quals | 10th (Team: Iku-toppene)
Internet Festival 2023 CTF finals | 🥉 (Team: Iku-toppene)
Crowdsec's Alpaca Odyssey 2023 | 🥇 (Team: NTNU S2G)
DEF CON 31 CTF | 6th (Team: NorseCode)
Cyberlandslaget (NCSC) 2023 Semi-Finals | 🥈 (Individual)
TG:Hack23 | 🥉 (Team: Corax)
ZeroDays CTF 2023 | 🥇 (Team: NTNU S2G)

2022