$ ctf42

#integer-underflow CTF challenges

3 CTF challenges using integer-underflow from 3 CTFs (2018–2023), 3 with writeups. Mostly Pwn (67%) and Misc (33%).

Pwn · 2 Misc · 1

Often combined with

#uint64-wraparound 1 #pie-leak 1 #stack-pivot 1 #arbitrary-write 1

Challenges

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Challenge CTF Weight Category Has
heap_hell Hack.lu 2018 72.75 Misc files wu 2
Over_The_Edge 1337UP 2023 24.23 Pwn files wu 1
memsafed zer0pts 2022 35.97 Pwn files wu 1