Writeups
A collection of some writeups written by TJCSC
Brian Ho
picoGym - Specialer
2/20/2024 — 1 minute read
Reading files in a sandboxed environment
Darin Mao
ASIS CTF Finals 2021 - cuuurl
1/7/2022 — 2 minute read
Arbitrary curl to RCE
Darin Mao
TetCTF 2022 - ezflag 2
1/7/2022 — 4 minute read
Simple ROP through a socket
Darin Mao
TetCTF 2022 - magicbox
1/7/2022 — 3 minute read
Reversing a NOR machine
Darin Mao
redpwnCTF 2021 - gelcode-2 (pwn)
7/12/2021 — 2 minute read
Shellcode golfing
Darin Mao
redpwnCTF 2021 - devnull-as-a-service (pwn)
7/12/2021 — 7 minute read
ret2dlresolve on 64-bit binaries with huge pages
Darin Mao
picoMini by redpwn 2021 - Darin's Challenges
6/21/2021 — 8 minute read
Author writeups for picoMini by redpwn
Diana Lin
picoMini by redpwn 2021 - not-crypto (rev)
5/12/2021 — 1 minute read
Writeup for not-crypto (rev)
Diana Lin
picoMini by redpwn 2021 - notepad (web)
5/12/2021 — 3 minute read
Writeup for notepad (web)
Anna Hsu
picoMini by redpwn 2021 - advanced-potion-making (forensics)
5/11/2021 — 1 minute read
Fixing a corrupt PNG file
Anna Hsu
picoMini by redpwn 2021 - login (web)
5/11/2021 — 1 minute read
Client side login seems like a bad idea
Darin Mao
ångstromCTF 2021 - wallstreet (pwn)
4/15/2021 — 2 minute read
An unusual trick for format string exploitation
Darin Mao
ångstromCTF 2021 - Jar/Snake/Ekans
4/15/2021 — 8 minute read
Exploiting heavily restricted pickle deserialization
Darin Mao and Daniel Wang
picoCTF 2021 - BitHug (web)
4/5/2021 — 2 minute read
Exploiting SSRF in a complex web application
Darin Mao
picoCTF 2021 - Stonk Market (pwn)
3/31/2021 — 4 minute read
Tricky format string exploitation
Darin Mao
picoCTF 2021 - Bizz Fuzz (pwn)
3/30/2021 — 2 minute read
Automated analysis of a large binary
Darin Mao
justCTF 2020 - Pinata (pwn)
1/30/2021 — 10 minute read
Blind exploitation of nginx from justCTF 2020
Darin Mao, Saigautam Bonam, and Autin Mitra
TJCSC Winter Contest 2020
12/16/2020 — 14 minute read
Solutions to selected problems from the 2020 Winter Contest
Darin Mao and Stephen Huan
NACTF 2020
11/4/2020 — 2 minute read
Required writeups for winning teams.
Darin Mao
CSAW CTF 2020 Qualifier - blox (rev/pwn)
11/3/2020 — 6 minute read
This was a two-part series from the 2020 CSAW CTF Qualifier involving a small Tetris-like game.
Darin Mao
DamCTF 2020 - guess (pwn)
10/12/2020 — 1 minute read
This is my writeup for the challenge "guess" in the pwn category from OSUSEC's DamCTF 2020.
Darin Mao
CSAW RED 2020 Qualifier (crypto)
9/29/2020 — 2 minute read
Solutions for crypto challenges from the CSAW RED 2020 Qualification Round.
Darin Mao
CSAW RED 2020 Qualifier (misc)
9/29/2020 — 5 minute read
Solutions for misc challenges from the CSAW RED 2020 Qualification Round.
Darin Mao
CSAW RED 2020 Qualifier (pwn)
9/29/2020 — 6 minute read
Solutions for pwn challenges from the CSAW RED 2020 Qualification Round.
Darin Mao
CSAW RED 2020 Qualifier (web)
9/29/2020 — 1 minute read
Solutions for web challenges from the CSAW RED 2020 Qualification Round.
Darin Mao
CSAW RED 2020 Qualifier (rev)
9/29/2020 — 7 minute read
Solutions for rev challenges from the CSAW RED 2020 Qualification Round.