$ ctf42

#upx CTF challenges

5 CTF challenges using upx from 5 CTFs (2017–2025), 5 with writeups. Mostly Reverse (80%) and Pwn (20%).

Reverse · 4 Pwn · 1

Often combined with

#unpacking 3 #golang 1 #xor 1 #heap-overflow 1

Challenges

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Challenge CTF Weight Category Has
effortless
#upx#unpacking
 NexHunt 2025 – Reverse files wu 1
Packed_Full_Of_Surprises
#upx#unpacking
 PatriotCTF 2024 31.83 Reverse files wu 1
Parcel
#upx#unpacking
 GreyCatTheFlag 2022 24.50 Reverse files wu 1
Minesweeper
#upx#heap-overflow
 CSAW 2017 Quals 24.61 Pwn files src wu 1
Lets-a-Go
#upx#golang#xor
 SunshineCTF 2022 24.10 Reverse files wu 1