information security & capture the flag
I’ve participated in several information security competitions, sometimes under
teams /bad or mushroom 🍄. Cryptography and reverse engineering puzzles are
my sort of thing.
See a list of my writeups here.
2023
- ACSC 2023 (writeups) - 5th overall, 4th among eligible participants, 🥇 Individual 1st in Singapore
2022
- Hack-A-Sat 3 Qualifiers - Played with Tea MSG, Team 13th place
- SEETF 2022 (writeups) - Played with claypot RCE, Team 4th place
- ENISA International Cybersecurity Challenge 2022 (writeup) - Played with ACSC Team, 🥇 Team 1st place for Attack & Defence and 🥈 Team 2nd place overall
- Google CTF 2022 - Category writeup prize for misc: OCR
- ImaginaryCTF 2022 (writeups) - Writeup prize for Secure Encoding: Base64
- TISC 2022 by CSIT - 5/10 challenge tiers cleared, Individual 13th place
- STACK the Flags 2022 by Govtech (writeups) - Participated solo and got Team 9th place in Open Category and fastest Crypto full solve
- Writeup prizes for UIUCTF and ImaginaryCTF
- CTFTime 2022 Season - Played solo in many online competitions and reached 4th in Singapore
2021
- DSO-NUS CTF 2021 (writeups) - 21st place, participated solo
- CDDC 2021 by DSTA - 🥇 Team 1st place, but it’s a long story…
- ACSC 2021 (writeups) - 9th overall, 🥈 Individual 2nd in Singapore
- STANDCON CTF - Played with team Eridanus, Team 6th place
- ASEAN Cyber SEA Games 2021 - Represented 🇸🇬 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
- Cybersecurity Challenge Singapore 2018 by CSA - 🥇 Top 6 indivdual + Top Team prize
- Cybersecurity Challenge UK 2018 - ✈️ Part of Singapore delegation
2017
- CDDC 2017 (DSTA) - 🥉 3rd place, JC/IP category
- Cybersecurity Challenge Singapore 2017 by CSA - 🥇 Top 6 indivdual + Top Team prize