So Meta (picoCTF2019)

21 Nov 2019

Description

Solution

In this task we get some .png file. The name of the task say that we probably need to find something in meta data. I found 2 ways to get flag in this task:

We can open the image in hex editor and search for flag. We can easy find it:

We can also do it in linux console. We use:

identify --verbose pico_img.png

This command will show us many data (characteristic) about image. Here we can find flag in “Properties” section as an “Artist”:

Of course we can also add grep to last command to find flag quickerŁ

identify --verbose pico_img.png | grep "picoCTF"

picoCTF{s0_m3ta_3d6ced35}