Jst - Hacking, Learning, and Writing

SekaiCTF 2026

2026-07-05

SekaiCTF 2026

ctf

/

sekaictf

/

blockchain

/

solidity

/

reentrancy

/

delegatecall

/

storage-collision

/

rev

/

windows

/

kernel-driver

/

hmac-sha256

/

bcrypt

/

wine

Selected writeups: the two-part PP Farming smart-contract series and the Chibile anti-cheat reversing challenge.

2256 words

|

11 minutes

BYU CTF 2026

2026-05-31

BYU CTF 2026

ctf

/

byuctf

/

crypto

/

aes-gcm

/

nonce-reuse

/

pwn

/

stack-leak

/

hmac-forgery

/

git

/

forensics

Selected writeups: AES Scissor Co 3, Bytecoin, and the Gitastic git-forensics series.

2390 words

|

12 minutes

UMDCTF 2026

2026-04-29

UMDCTF 2026

ctf

/

umdctf

/

pwn

/

vulkan

/

lavapipe

/

descriptor-set

/

misc

/

quantum

/

grover

Selected writeups: vkexchange and quant?.

1579 words

|

8 minutes

b01lers CTF 2026

2026-04-24

b01lers CTF 2026

ctf

/

b01lers

/

pwn

/

jail

/

python

/

micropython

/

type-confusion

/

sandbox-escape

Selected writeups: micromicromicropython and build-a-builtin.

1612 words

|

8 minutes

UMassCTF 2026

2026-04-16

UMass Cybersecurity 2026

ctf

/

umass

/

pwn

/

stack-overflow

/

rop

/

orw

/

pwntools

/

pie

Factory Monitor writeup.

1466 words

|

7 minutes

VishwaCTF 2026

2026-04-08

VishwaCTF 2026

ctf

/

vishwactf

/

web

/

xxe

/

race-condition

/

business-logic

/

pwn

/

format-string

Selected writeups: Keymaster Secrets, Flag Market, and TinyLang.

2010 words

|

10 minutes

PolyU FYP 2026

2026-03-24

PolyU FYP 2026

ctf

/

polyu

/

fyp

/

web

/

xss

/

firefox

/

pwn

/

format-string

Selected writeups: File Uploader, Themes Lover 2, and Logging Lover.

1848 words

|

9 minutes

TAMUctf 2026

2026-03-23

TAMUctf 2026

ctf

/

tamuctf

/

forensics

/

git

/

github

/

osint

/

pwn

/

heap

/

tcache

Selected writeups: Phantom, Phantom 2, and military-system.

1446 words

|

7 minutes