picoCTF 2024 — Forensics: Glory of the Garden

MTienNg
Aug 22, 2024

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Description

This garden contains more than it seems.

Steps

1: Downloading the Image

The challenge provided a link to download an image file.

2. Analyzing the Image Metadata

I started by using ExifTool to inspect the image’s metadata, but unfortunately, there wasn’t any useful information to be found.

3: Searching for Hidden Text with Strings

Next, I decided to use the strings command to search for any hidden text strings within the image file. This tool is useful for uncovering embedded flags or hints that might be hidden as plain text within files.

4: Discovering the Flag

To my surprise, the flag appeared in the very last line of the output:

The flag is picoCTF{more_than_m33ts_the_3y3eBdBd2cc}

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MTienNg

Student of Ho Chi Minh City University of Industry and Trade (HUIT), majoring in Information Security