Parade_buster-final.7z -

: Opening the first archive ( part2_0.7z ) in a hex editor revealed a PNG header ( 89 50 4E 47 ) and an IHDR chunk buried within the file structure itself, rather than in the extracted contents. The Pattern :

The first file contained the start of the PNG, while the last file ( part2_375.7z ) contained the . Parade_Buster-Final.7z

The PNG file was striped and hidden in the trailing bytes of the 7z archives, just before the footer. : Opening the first archive ( part2_0

The offset for the hidden PNG data could be calculated by comparing the reported "Packed Size" from the 7z -slt l command with the actual file structure. The offset for the hidden PNG data could

The challenge provided a set of 376 individual 7zip archives (e.g., part2_0.7z through part2_375.7z ). Inside these archives were multiple "junk" files (e.g., junk_0.bin ), which initially appeared to be the primary data for extraction. Analysis & Solution

: Standard extraction and concatenation of the junk files failed to yield a valid binary.