pwn writeups
ret2thumb
12/03/2023
I can't figure out the difference between ARM and Thumb...
hopscotch
12/03/2023
These one byte write challenges have been all the rage recently, so I decided to write one too!These one byte write challenges have been all the rage recently, so I decided to write one too!
armbox
12/03/2023
We don't have enough compute to run full system emulation for seccomp D: You'll have to make do with this budget seccomp implementation.
flag-sharing
10/08/2023
cache side channel
simpleOS
07/18/2023
simple-heap-v1
07/18/2023
permissions
07/18/2023
Every programmer should read the Intel Software Developer Manuals at least once.
perfect-sandbox
07/18/2023
i-love-ffi
07/18/2023
I love ffi, don't you?
frog-math
07/18/2023
ELFcrafting-v2
07/18/2023
ELFcrafting-v1
07/18/2023
Unlucky
05/04/2023
Luck won't save you here. Have fun trying to get the flag!
Sea Shells
05/04/2023
Sally sold some seashells by the seashore. Try to guess how many she sold, I bet you will never be able to!
Randomness
05/04/2023
I made this program to test how srand and rand work, but it keeps segfaulting. I don't read compiler warnings so I can't figure out why it's broken.
Pwnme
05/04/2023
pwn me. that's it.
Pointers
05/04/2023
I've been messing with pointers lately which never goes wrong, right?
Inspector Gadget
05/04/2023
Inspector Gadget gave me this binary with one goal. pwn.
Encryptinator
05/04/2023
I have made this super secure encryption engine. I'll encrypt any message and no one will ever be able to read it. Not even me!
Contrived Shellcode
05/04/2023
There's a 0% chance this has any real world application, but sometimes it's just fun to test your skills.
Bank
05/04/2023
I came up with this banking system that lets you deposit as much as you want. I'm not sure why, but my friend said it was a terrible idea...
two-sum
05/04/2023
compilers are too smart
tic-tac
05/04/2023
TOCTOU
hijacking
05/04/2023
privilege escalation
babygame02
05/04/2023
Break the game and get the flag.
babygame01
05/04/2023
Get the flag and reach the exit.
VNE
05/04/2023
We've got a binary that can list directories as root, try it out !!
Horsetrack
05/04/2023
I'm starting to write a game about horse racing, would you mind testing it out?
widget
05/04/2023
I seem to have lost my gadgets.
slack
05/04/2023
Join the ångstromCTF slack!
Sailor's Revenge
05/04/2023
First blockchain pwn!
queue
05/04/2023
I just learned about stacks and queues in DSA!
leek
05/04/2023
No leaks here...
gaga
05/04/2023
Easy beginner pwn
Parity
05/12/2022
Check your parity.
Dreams
05/11/2022
Sometimes I want to just stay in my dreams.
Secure Horoscope
05/08/2022
Our horoscope developers have pivoted to a more security-focused approach to predicting the future. You won’t find breaking into this one quite so easy!
Oil Spill
05/08/2022
Darn, these oil spills are going crazy nowadays. It looks like there's a little bit more than oil coming out of this program though...