CrossCTF_2017: Go Deep

Category: Cryptography Points: 15 Description:

We intercepted this mystery message. Could you figure out what it is?

Write-up

A classic rabbit hole challenge where the organizers run out of ideas and decide to encode the flag behind layers of encodings.

Solution

$ ./solve.py 
CrossCTF{I_5h@11_h1v3_70_90_d33p}

Therefore, the flag is CrossCTF{I_5h@11_h1v3_70_90_d33p}.