Links
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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

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.

~# ls -la 2023

CTF Name
Type
Position
​hxp CTF 2022​
Jeopardy
​🥇​
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
Jeopardy
​🥉​
LakeCTF Finals
Jeopardy
6th
​LakeCTF Qualifiers​
Jeopardy
7th
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
Jeopardy
​🥉 (SG) 4th (Overall)
Jeopardy
26th
Jeopardy
4th
​NahamCon CTF 2022​
Jeopardy
13th
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
Jeopardy
Top of Scoreboard
idekCTF 2021
Jeopardy
13th
Hack Quest
7th
​MetaCTF CyberGames​
Jeopardy
24th
Jeopardy
16th
Jeopardy (Individual)
23rd
BuckeyeCTF 2021
Jeopardy
7th
Jeopardy
37th
pbCTF 2021
Jeopardy
32nd
DeconstruCT.F
Jeopardy
14th
Jeopardy (Individual)
​🥉 (SG)
33rd (Overall)
Jeopardy
23rd
​YauzaCTF 2021​
Jeopardy
9th
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%
Jeopardy
10th
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.