Parade_buster-final.7z (TESTED | REPORT)

The file Parade_Buster-Final.7z was the concluding challenge in the series from TastelessCTF 2020 . This write-up details the process of identifying a hidden PNG file embedded across hundreds of separate archives. Challenge Overview

The PNG file was striped and hidden in the trailing bytes of the 7z archives, just before the footer. Parade_Buster-Final.7z

: To solve this, a script was used to loop through all 376 files, extract a specific block of bytes (typically 0x11 bytes) from each, and concatenate them. Final Result The file Parade_Buster-Final

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