Hi all together.
During the past 6 weeks I had numerous request for resetting the admin password on Joomla 1.5.x installations. Clients came up hacked with no backups to restore their site. So I now decided to publish my pwReset on joomlakom.de.
Download the ZIP package and extract it to a local folder.
Upload the PHP script pwreset.php via FTP, SFTP or FTPS to the root folder of your Joomla! installation.
Call it one time from the browser.
Ready to login with the password admin.
If you need to reset the password for another username than "admin", open the PHP script and change the definition of the constant USERNAME to fit your needs.
Delete the script directly after resetting your admin's password!