abandoned place - ctflearn.com
2025-05-29
Author: Aaron 'theHastyOne' Hasty
Download the file.
steghide on the file will produce this error
Corrupt JPEG data: 220696 extraneous bytes before marker 0xd9 steghide: could not extract any data with that passphrase!
Open the file in a hex editor, locate the Start of File (SOF) marker. FF C0
the structure is
FF C0 [Length] [Precision] [Height (2 bytes)] [Width (2 bytes)] [Components]edit the height bit to be much longer. In this example I went to 1400 05 78
save the edits and open the image.
ctflearn{urban_exploration}