🚩Zeyu's CTF Writeups

Here you can find writeups from various CTFs that I've participated in.

~# man CTFs

In case you don't know what CTFs are, here's a nice definition:

A capture the flag (CTF) contest is a special kind of cybersecurity competition designed to challenge its participants to solve computer security problems and/or capture and defend computer systems.

~# groups

I play CTFs with Social Engineering Experts and Water Paddler.

Social Engineering Experts is a Singapore-based team founded by a group of friends. We're always looking for active players to join us — check out the recruitment form in our CTFtime profile.

CTFtime.org / Social Engineering ExpertsCTFtime

~# ls -la 2023

CTF Name	Type	Position
DEF CON CTF 2023 Qualifiers	Jeopardy	🥇
hxp CTF 2022	Jeopardy	🥇
HackTM CTF Qualifiers	Jeopardy	6th
Insomni'hack Teaser	Jeopardy	11th
IrisCTF 2023	Jeopardy	1st
TetCTF 2023	Jeopardy	4th

~# ls -la 2022

CTF Name	Type	Position
ASIS CTF Finals 2022	Jeopardy	🥈
niteCTF 2022	Jeopardy	13th
STACK the Flags 2022	Jeopardy	🥉
LakeCTF Finals	Jeopardy	6th
LakeCTF Qualifiers	Jeopardy	7th
The InfoSecurity Challenge 2022	Jeopardy	Challenge Author
Midnight Sun CTF Finals	Jeopardy	7th
Midnight Sun CTF Quals	Jeopardy	6th
BalsnCTF 2022	Jeopardy	8th
HITB SECCONF CTF 2022	Attack-Defense	11th
BSidesTLV 2022 CTF	Jeopardy	7th
Grey Cat The Flag 2022 Qualifiers	Jeopardy	🥉 (SG) 4th (Overall)
DEF CON CTF 2022 Qualifiers	Jeopardy	26th
Securinets CTF Finals 2022	Jeopardy	4th
NahamCon CTF 2022	Jeopardy	13th
Securinets CTF Quals 2022	Jeopardy	4th
LINE CTF 2022	Jeopardy	19th
CTF.SG CTF	Jeopardy	🥉
YaCTF 2022	Jeopardy (Individual)	13th
DiceCTF 2022	Jeopardy	33rd
TetCTF 2022	Jeopardy	7th

~# ls -la 2021

CTF Name	Type	Position
hxp CTF 2021	Jeopardy	48th
HTX Investigator's Challenge 2021	Jeopardy	Top of Scoreboard
idekCTF 2021	Jeopardy	13th
Metasploit Community CTF	Hack Quest	7th
MetaCTF CyberGames	Jeopardy	24th
CyberSecurityRumble CTF	Jeopardy	16th
The InfoSecurity Challenge (TISC) 2021	Jeopardy (Individual)	23rd
BuckeyeCTF 2021	Jeopardy	7th
SPbCTF's Student CTF 2021 Quals	Jeopardy	37th
pbCTF 2021	Jeopardy	32nd
DeconstruCT.F	Jeopardy	14th
Asian Cyber Security Challenge (ACSC) 2021	Jeopardy (Individual)	🥉 (SG) 33rd (Overall)
CSAW CTF Qualification Round 2021	Jeopardy	23rd
YauzaCTF 2021	Jeopardy	9th
InCTF International	Jeopardy	22nd
DEF CON 29 Red Team Village CTF (Finals)	Hack Quest	18th
DEF CON 29 Red Team Village CTF (Quals)	Jeopardy	16th
UIUCTF 2021	Jeopardy	18th
Securebug Loki CTF	Jeopardy	5th
Google CTF 2021	Jeopardy	< 20%
TyphoonCon CTF 2021	Jeopardy	10th
DSTA BrainHack CDDC21	Jeopardy	🥉
BCACTF 2.0	Jeopardy	43rd
Zh3ro CTF V2	Jeopardy	37th
Pwn2Win CTF	Jeopardy	62nd
NorzhCTF	Hack Quest	29th
DawgCTF	Jeopardy	13th
UMDCTF	Jeopardy	8th
Midnight Sun CTF	Jeopardy	< 20%
picoCTF	Jeopardy	< 5%
DSO-NUS CTF	Jeopardy	< 20%

~# cat LICENSE

All original code is licensed under the MIT license.