Identify the archive's contents and retrieve the hidden flag or "secret" data. 1. Initial Identification
If the archive is empty or the extracted file seems useless: POST-09.rar
Run file POST-09.rar to confirm it is a valid RAR archive. Identify the archive's contents and retrieve the hidden
If the file list is hidden, the are encrypted (RAR 5.0 standard). 3. Cracking & Extraction (If Encrypted) POST-09.rar
The first step is to verify the file integrity and type to ensure it isn't a "polyglot" (a file that acts as two different formats at once).
Check for appended data (files hidden after the end of the archive) using binwalk -e POST-09.rar . Hex Editing: Open the file in HxD or Ghex . Check for: