A Greek Tale of Sky-Traboda-Cryptography-CTF-Write-up
CHALLENGE DESCRIPTION
I once heard a story, about the great Sky of the Greek. And all I can tell you is: “The cipher is what you are seeking for”
P.S, the ciphertext is hex encoded.
Flag Format: inctfj{...}
As given in challenge description the ciphertext is hex encoded. Using
online-hex decoder, decrypt the ciphertext.
On decrypting we get a flag like result. But it’s not the flag. So, we need to look for some other methods. Looking for hints, found a cipher which sounds similar to our challenge Title. YES, I am talking about “Scytale Cipher”.
Scytale cipher is one of the transposition ciphers.
The encryption key is the number of characters that can be written in one round of the scytale
By initiating brute-force attack on scytale cipher, we will get our flag..
Challenge flag: inctfj{pl3ase_d0n7_us3_d3c0d3.fr}
