Asklemmy

This can be easily done using PowerShell, and rar.exe which is part of WinRAR. Just edit the first three variables below according to your needs and run the script. You don't even need to save it as a script, just copy-paste the code into a PowerShell window, you can use the arrow keys to edit the variables (or edit it using notepad if you like) and then press enter when you're ready to run the script.

$winrar = "C:\Program Files\WinRAR\Rar.exe"
$passlist = @("pass1", "pass2", "pass3", "pass4")
$folder = "C:\Path\To\Folder"

cd "$folder"
foreach($file in (dir *.rar).Name) { "Checking $file..."; foreach($pass in $passlist) { .$winrar t -p"$pass" "$file" *>$null ; if($LASTEXITCODE -eq 0){ " → Password for $file is $pass"; break }}""}

This would give you an output which looks like:

Checking file1.rar...
 → Password for file1.rar is pass1

Checking file2.rar...
 → Password for file2.rar is pass2

Checking file3.rar...
 → Password for file3.rar is pass3

If there's something you don't understand in the code above, lemme know - happy to explain further. :)

Is there a way to call the unrar command via command line and pass the password as a parameter? There should be.

If there is not with winrar, try the 7zip commandlet for powershell, that should definitely be able to do what you want.

Write a quick skript that reads your passwords from a text file into a variable, use a foreach-object loop to iterate over the variable and each time call the unrar command and use the current password.

Not sure if this is elegant, but that's the first thing that comes to my mind.

7zip module documentation

This is a great time to learn about hashcat.