085

• Description: Format:HMV{}

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🔎 Solution

I started by checking the metadata of the image. Using exiftool, I noticed a reference to a ZIP file named hidden, which suggested that the PNG file might contain embedded compressed data.

> exiftool flag.png 
ExifTool Version Number         : 13.25
File Name                       : flag.png
...
Zip File Name                   : hidden/
Warning                         : [minor] Use the Duplicates option to extract tags for all 2 files

Since the metadata hinted at a hidden archive, I used binwalk to extract any embedded files stored inside the image.

> binwalk -e flag.png

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             Zip archive data, at least v2.0 to extract, name: hidden/
37            0x25            Zip archive data, at least v2.0 to extract, compressed size: 2633, uncompressed size: 2784, name: hidden/flag.png

binwalk successfully detected and extracted a directory named hidden. Inside that directory was another PNG file, which contained the flag.

🚩Flag

HMV{F0r3N51C_3xP3rT_1N_7H3_R00M}