Download the Duck.png for the challenge.
Use strings on de Duck.png, where you can see the string in Base64:``` nUE0pUZ6Yl93q3phoJIxnJSznKWyYzAioF9znJkyY3E3AwHjoGM6BGW1oGDjpP9RqJAerF5dpTpiMzyfMD== ```
Decode from Base64 and get the mediafire link:
[https://www.mediafire.com/file/tw650m6z92um40p/Ducky.jpg/file ](http://).
Then use the text in the image you got (``` DON'T DUCK WITH ME ```) as a passphrase in steghide with the Ducky.jpg, something like this should do:
``` steghide extract -sf Ducky.jpg -p "DON'T DUCK WITH ME" ```  , you can use other tools, tho .
With this you get a zip named Gooooooose.zip, now you can extract it, and get a image named Gooooooose.jpeg, then just use the strings with the grep command to get the flag. Like this ``` strings Gooooooose.jpeg | grep 'CTF.*' ```.