how to change password after BO deployment w/o using CMC

Hi, guys.

we are in process of deploying BO solution on customer site by customer folks and we don't want them to know password for administrator because it violate IP issues and etc.

Is any way to modify admin's password using SDK or directly accessing MySQL as a part of post-installation activity, for example.

Step 1: instal BO by default with admin and empty password

Step 2: run some script or exe to setup password

May be somebody has seen such use case and got solution to share

thanks for help