$ ctf42

#wasm CTF challenges

3 CTF challenges using wasm from 3 CTFs (2020–2025), 3 with writeups. Mostly Pwn (33%) and Web (33%).

Pwn · 1 Web · 1 Misc · 1

Often combined with

#web 1 #use-after-free 1 #xss 1 #rust 1 #sandbox-escape 1 #prototype-pollution 1

Challenges

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Challenge CTF Weight Category Has
chessrs
#wasm#rust#use-after-free (uaf)#xss#web
 DiceCTF 2023 36.70 Pwn files wu 2
merry_cemetery
#wasm
 HackTM 2020 Quals 24.02 Misc files wu 1
Captivating_Canvas_Contraption
#prototype-pollution#wasm#sandbox-escape
 SekaiCTF 2025 55.00 Web files wu 1