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.

Challenge writeups for BuckeyeCTF 2021 by The Ohio State University's Cyber Security Club from 23 October - 25 October.

Special guest writeup by drome for Challenge 10 of Flare-On 8 2021! This contest is organised by the FireEye Labs Advanced Reverse Engineering (FLARE) team from 10 September - 22 October.

Special guest writeup by drome for Challenge 6 of Flare-On 8 2021! This contest is organised by the FireEye Labs Advanced Reverse Engineering (FLARE) team from 10 September - 22 October.

Only completed 2 of the easiest challenges in pbctf 2021 by perfect blue from 9 October - 11 October, but here are the writeups anyway!

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

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