Challenge Author: Mubarak Mikail
Difficulty: Easy
Description
How about some hide and seek?
Process / Notes
- wget the download
- zip file, unzip to reveal a jpg
fileandexiftoolon it also show it’s a jpgdisplayto view it through ImageMagick shows a dark, celestial room with shadowed figures- Checked Hint 1
- Tried to
hexdump - Checked hint 2
- I’ve got a feeling it’s about using a tool or recognizing something I don’t know, checking a walk-through at 12:03
- The “Attribution URL” seen in the meta-data is in base64!
- Decoding with
base64 -dreveals the flag
14 minutes 33 seconds to complete
Hints
- How can you view the information about the picture?
- If something isn’t in the expected form, maybe it deserves attention?
Core Lessons
- Look carefully at all the pieces you have access to. I saw the metadata with
exiftoolbut did not recognize that there was something there to decode