Challenge writeups for Grey Cat The Flag Qualifiers 2022 by NUS Greyhats and the National Cybersecurity R&D Lab (NCL) of Singapore. Also abbreviated as GreyCTF. This ran from 6 June - 10 June.

Writeups for the HTX Investigators' Challenge (HTX IC) 2021 by the Home Team Science and Technology Agency of Singapore. This 12 hour competition took place on 20 December.

Challenge writeups for The InfoSecurity Challenge (TISC) 2021 by the Centre for Strategic Infocomm Technologies (CSIT). This challenge ran from 29 October to 14 November.

Writeups for solving all web challenges during STANDCON CTF 2021 by N0H4TS on 24 July.

Writeups for challenges I solved during BrainHack CDDC 2021 (Junior Category) by DSTA from 23 June - 25 June.

2 web challenges for Zh3r0 CTF V2 2021 hosted from 4 June - 6 June.

Just a few challenge writeups for the unique NorzhCTF 2021 hosted from 21 May - 23 May.

Writeups on the challenges I solved for UMDCTF 2021 hosted by UMDCSEC from 16 April - 18 April.