PikesPeak

Pay attention to those strings!

PikesPeak.jpg

We can use the strings utility in order to view all the strings present in the image with length more than 4 characters.

$ strings PikesPeak.jpg
JFIF
CTFLEARN{PikesPeak}
CTFLearn{Colorado}
%ctflearn{MountainMountainMountain}
#cTfLeArN{CTFMountainCTFmOUNTAIN}
CTF{AsPEN.Vail}
CTFlearn{Gandalf}
ctflearning{AUCKLAND}
ctfLEARN{MtDoom}
6ctflearninglearning{Mordor.TongariroAlpineCrossing}
+CTFLEARN{MountGedePangrangoNationalPark}
$ctflearncTfLeARN{MountKosciuszko}
-- snip --;

Only one of the flags present are in the correct format.

Flag

CTFlearn{Gandalf}