Mr Bin

binwalk extracted two files from image.jpg, bin, which was empty and D0F0.zip.

Decompressed D0F0.zip with 7z, it asked for password. Revisited image.jpg and found password mr_b1n.

$ vim image.jpg
...pass:<89>mr_b1n...

After decompression, bin file contained 360001 bytes. According to hint from image.jpg, bin is a 600x600 ascii picture.

$ strings image.jpg |head
JFIF
NjAweDYwMF9waWN0dXJl
QA%C
(%-B
 B)X
k&v+
!`BB
%d @)
KBABXX0
L^W*Pd
$ base64 -d <<< NjAweDYwMF9waWN0dXJl
600x600_picture

The line was too long to read even reshaped it to matrix of 600x600. Trimed additional 0s from top, bottom, left and right, read it vertically the flag was CTFlearn{y0u_n4i13d_it}