forensicsPromedium
Старый боец (Old Fighter)
hackerlab
Task: a DOOM PWAD file (my.wad, 238 lumps) hides a flag. Solution: parse the WAD directory, spot two duplicate PANBOOK3 lumps with an anomalous size, validate they are not real DOOM patches, carve them by PNG magic bytes, and read the flag rendered as text on a bookshelf image.
$ ls tags/ techniques/
wad_directory_parsingduplicate_lump_name_detectionlump_size_anomaly_detectiondoom_patch_format_validationpng_magic_byte_carvingimage_upscaling
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