Because the server likely has an vulnerability or allows the use of PHP wrappers, you can call the file inside the archive without extracting it manually.
Which of these scenarios matches the you are working with? BG.zip
The application might be using ZipArchive in PHP to bundle files before storing them in an /uploads/ directory. Step 2: Exploitation (Webshell Upload) Because the server likely has an vulnerability or
The server executes the command whoami , confirming Remote Code Execution. Alternative Interpretations Step 2: Exploitation (Webshell Upload) The server executes
Discovery often starts with identifying an upload form. In many "Zipper" style challenges, you find a PHP-based upload page that generates a download link for your compressed files.
Create a file named cmd.php containing . Upload: Submit the file through the web interface.
Determine if the server executes files based on their extension or if it filters specific dangerous strings.