NewFinderWindow.scpt

set targetFolder to path to home folder

-- See if active window is a Terminal window
tell application "System Events"
    set frontApp to name of (first application process whose frontmost is true)
    if frontApp is "iTerm2" then
        -- If so, set target folder to the current terminal's `pwd`
        tell application "iTerm"
            tell current session of current window
                set targetFolder to ((variable named "session.path") as POSIX file)
            end tell
        end tell
    end if
end tell

-- Open the new Finder window
tell application "Finder"
    set target of (make new Finder window) to targetFolder
end tell