Parade_buster-final.7z -

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

: Standard extraction and concatenation of the junk files failed to yield a valid binary. The file Parade_Buster-Final

Concatenating these extracted bytes from all files produced a final, valid image file named , which contained the flag for the challenge. CTFtime.org / TastelessCTF 2020 / 7/12 / Writeup valid image file named