RAR files in technical challenges are frequently password-protected.
If you find .js , .vbs , or .ps1 files, they likely contain encoded commands (Base64 or Hex) that need to be "de-obfuscated" to find a hidden flag or URL. 1HGWOSBW rar
Check the source of the file for "hints." Often, the password is hidden in a related image (steganography) or a text file. or .ps1 files