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Network Services Pentesting
PNG tricks
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PNG files, in particular, are popular in CTF challenges, probably for their lossless compression suitable for hiding non-visual data in the image. PNG files can be dissected in Wireshark. To verify correcteness or attempt to repair corrupted PNGs you can use pngcheckโ€‹
You can try to repair corrupted PNGs using online tools like: https://online.officerecovery.com/pixrecovery/โ€‹
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