0x41414141 2021

CTFtime official repo

0x41414141 CTF is a cybersecurity capture the flag event consisting of the main challenge categories plus some solidity hacking.

This event event is sponsored by Offshift a new crypto protocol for storing your digital assets privately, you can read more about them on https://offshift.io

Pwn 7

Challenge	Has
Babyheap	files
echo #srop #sigreturn-oriented-programming	files wu 3
external #syscall-rop #got-overwrite	files wu 3
faking_till_you_are_making	files
moving-signals #srop #buffer-overflow	files wu 3
ret-of-the-rops	files
the_pwn_inn	files wu 3

Reverse 8

Challenge	Has
Backupkeys	files
Cage	files
Ware #upx-unpacking #reverse-engineering	files wu 2
WrongDownload	files
battleroad	files
cliBrowser #golang-reverse-engineering	files wu 1
hash #upx-unpacking #golang-reversing	files wu 2
x-and-or #xor-decrypted-self-modifying-code #mmap	files wu 3

Crypto 10

Challenge	Has
Delegate-wallet #lcg-prng-prediction #weak-randomness	files wu 2
RICH-CLUB	files wu 1
Soul-Permutation-Network	files src
crackme.sol #solidity-smart-contract-reversing #xor	files wu 1
crypto-casino #predictable-on-chain-randomness #keccak-prng #weak-seed	files wu 1
eazy-RSA #rsa #e-and-phi-not-coprime #modular-square-root #crt	files wu 3
factorize	files wu 3
sanity-check	files wu 1
secure-enclave #on-chain-secret-exposure #transaction-input-data-disclosure	files wu 1
staple-AES #aes-ecb #block-shuffling	files wu 2

Misc 3

Challenge	Has
Pyjail	files
File Reader	files
Shjail	files