stegoeasy

Palo Arto

volgactf

Task: webpage with base64-encoded PNG image using 256-entry palette with near-identical color pairs. Solution: palette index LSB steganography — each pixel's palette index LSB encodes a hidden bit, reading all bits sequentially reveals the flag.

$ ls tags/ techniques/
steganographybase64lsbpngpalettecolormappalette_steganographyindex_lsb
palette_index_lsb_steganographybase64_image_extractionpalette_pair_analysis
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