Depending on the specific CTF platform, the "flag" is usually hidden in one of the following ways:
After following the breadcrumbs through the metadata and hidden files, you will typically find the flag formatted as CTF... or FLAG... .
binwalk , strings , Autopsy or FTK Imager , Wireshark (if PCAPs are included), and ExifTool . 2. Initial Analysis
If the zip contains a disk image (like a .dd or .ad1 file), load it into Autopsy to recover "deleted" files that might contain sensitive logs or password hints.
Run binwalk -e Kill.The.Plumber.zip to see if there are images or documents hidden within other files (a file within a file).
The file is commonly associated with a digital forensics or Capture The Flag (CTF) challenge. In this scenario, you are usually tasked with investigating a simulated "incident" involving a file that parodies the Mario franchise.
If a traffic.pcap file is included, filter for HTTP or DNS traffic to see where the "Plumber" (the attacker/victim) was communicating. 5. Conclusion & Flag
The first step is verifying the file type and checking for "easy" wins.