information security & capture the flag

I’ve participated in several information security competitions, sometimes under teams /bad or mushroom πŸ„. Cryptography and reverse engineering puzzles are my sort of thing.

See a list of my writeups here.

2023

  • ACSC 2023 (writeups) - Played as roastedgarlicsummersausage, 5th overall, 4th among eligible participants, πŸ₯‡ Individual 1st in Singapore
  • Hack-A-Sat 4 Qualifiers (writeups) - Played with Tea MSG, Team 14th place
  • GreyCTF 2023 Qualifiers - Played solo as γƒ¨γƒŸγƒ“γƒˆγ‚·γƒ©γ‚Ί, 25th place overall and 5th place among Singaporean teams, qualifying for finals
  • GreyCTF 2023 Finals (writeups) - Played as γƒ¨γƒŸγƒ“γƒˆγ‚·γƒ©γ‚Ί, 8th place overall and 4th place among Singaporean teams
  • TISC 2023 by CSIT - 8/10 challenge tiers cleared in 28h, Individual 10th place
  • NSUCRYPTO 2023 - Individual Bronze in University category
  • Writeup prize for SekaiCTF
  • CTFTime 2023 Season - Played solo in many online competitions and reached 10th in Singapore

2022

2021

  • DSO-NUS CTF 2021 (writeups) - 21st place, participated solo
  • CDDC 2021 by DSTA - πŸ₯‡ Team 1st place, but it’s a long story…
  • ACSC 2021 (writeups) - 9th overall, πŸ₯ˆ Individual 2nd in Singapore
  • STANDCON CTF - Played with team Eridanus, Team 6th place
  • ASEAN Cyber SEA Games 2021 - Represented πŸ‡ΈπŸ‡¬ Singapore, Team 3rd place
  • TISC 2021 by CSIT - 5/10 challenges cleared, Individual 7th place
  • CTFTime 2021 Season - Played solo in many online competitions and reached 11th in Singapore

2020

  • STACK the Flags 2020 by Govtech (writeups) - Team 8th place, Tertiary category

2018

2017