## Codefest CTF 2017 - SimplyBlack - Steganography### Problem
Black is not the only black. There are 50 shades of grey.
Flag is 'flag{secret}'.
[https://ctf.codefest.tech/data/attachments/SimplyBlack_b0c707a6fdf259e468663cebafb84451.png](https://github.com/kipyegonmark/ctfs/blob/master/Codefest%20CTF%202017/SimplyBlack_b0c707a6fdf259e468663cebafb84451.png)
### Solution
The problem statement hints at colour inversion. Opening the image using StegSolve and applying Colour Inversion(Xor) returns the flag
FLAG: __flag{LETHAL}__