misceasy
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hackerlab
Task: PNG file with hidden data after IEND chunk containing 7744 concatenated ZIP archives. Solution: Extract trailer data, parse ZIPs, interpret empty files as white pixels and non-empty as black to reconstruct a QR code.
$ ls tags/ techniques/
png_trailer_extractionmultiple_zip_parsingempty_file_encodingqr_code_generation
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