This challenge was a very simple crypto, there was a file called “ciphertext.txt” with some values in hexadecimal, binary, decimal and octal:
Our aim was read this file and decode each values.
For this purpose we have written a script in python that read the file and decode each value in integer and then in hexadecimal for get the ascii value. Below there is our script:
Run the script and get the flag:
Interessant Security/Hacking books: