2022-06-03 11-32-03~2.png 🌟 🚀

: Locate the IHDR section (usually starts at offset 0x0C ). The four bytes following IHDR are the width, and the four after that are the height.

: Use binwalk -e 2022-06-03 11-32-03~2.png to see if another file (like a .zip or .txt ) is embedded inside the image data. 5. Final Flag Extraction

If repairing the header doesn't reveal the flag, the next step is checking for hidden data: 2022-06-03 11-32-03~2.png

: Use the file command in Linux to confirm it is indeed a PNG image.

The first step in any forensics challenge is to verify the file type and examine basic metadata. : Locate the IHDR section (usually starts at offset 0x0C )

: Run exiftool 2022-06-03 11-32-03~2.png . This often reveals interesting timestamps or software tags, though in this specific case, the metadata is usually clean or points toward a Windows screenshot. 2. Visual Inspection and Strings

After repairing the height or running StegSolve on the "Gray Bits" or "Red 0" planes, a text string (the flag) typically appears at the bottom of the image or in a separate output window. It usually follows the format CTF{...} or FLAG{...} . : Run exiftool 2022-06-03 11-32-03~2

: Open the image in a viewer. If the image appears truncated or shows "noise" at the bottom, it suggests a resolution or chunk error. 3. PNG Chunk Repair (The "Core" Step)