blackSquare [easy]: HackTheBox Stego Challenge (morse code)

Video walkthrough for retired @HackTheBox (HTB) Stego challenge "blackSquare" [easy]: "Is Malevich’s Black Square so simple?" - Hope you enjoy 🙂

Sign up for HackTheBox: https://htb-signup.cryptocat.me

↢HackTheBox↣
https://app.hackthebox.eu/challenges/105

↢Video-Specific Resources↣
https://0xrick.github.io/lists/stego
https://github.com/DominicBreuker/stego-toolkit
https://stegonline.georgeom.net
https://medium.com/write-ups-hackthebox/blacksquare-stego-writeup-745a63d6bdd0

👷‍♂️Resources🛠
https://cryptocat.me/resources

↢Chapters↣
Start - 0:00
Basic file checks - 0:56
Extract data with StegSolve - 1:45
Investigate PGP key - 5:24
Move on to other techniques - 8:58
Check out StegOnline - 10:15
Extract data planes with StegSolve - 16:08
Inverse images with ImageMagick - 17:55
Make backgrounds transparent - 19:16
Overlay images - 20:55
Try to decode morse code manually - 22:11
Not working - refer to online walkthrough - 23:43
Remove all non black pixels - 25:54
Tryout existing script - 28:35