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## YubitSec CTF - File - Forensic
### Problem

Challenge's link

https://drive.google.com/open?id=0B\_jBF_ZqfxnBd0tKcDJMVkw1Njg

What is this file ?
Can you find hidden flag ?

Flag format: YUBITSEC{}

### Solution

Using [binwalk](https://github.com/devttys0/binwalk) to analyse the downloaded [file](https://github.com/kipyegonmark/ctfs/blob/master/YubitSec-2017/File/File) reveals a collection of zip files.

Running __binwalk -e__ to extract gives another zip file. Repeating the extraction process eventually leads to folder labelled __last__ that contains [flag.png](https://github.com/kipyegonmark/ctfs/blob/master/YubitSec-2017/File/flag.png) which has the text __C0MPR3SS10N_1S_G00D__.

FLAG: __YUBITSEC{C0MPR3SS10N_1S_G00D}__

Original writeup (https://gospelofmark.ch/yubitsec-ctf-file-forensic.html).