InCTF Jr Qualifiers 2021
Starts 6PM, 28th Dec
InCTF Jr

Corrupt

Medium Forensics

Author: Arya Arun

The given zip file is corrupted. On opening the file in a hex editor, we can find the corrupted header. Correct the file header from 70 4B 05 06 to 50 4B 03 04

Then, on unzipping we get a qr code.

Scanning the qr code will give a b64 encoded text: aW5jdGZqe3k0eXlfaEVyRSdzX3kwdXJfZkxhR30=

Decoding it will give the flag.