simon.jones.p (3/4/2016)
Hello, I know your post is a bit old so I'm working with a 'better late than never' approach to this.Passwords can now be extracted. Anyone who arrives here while looking for the solution, please be aware that with a bit of powershell knowledge, access to the DAC and administrative access to the local machine; you can use the following scripts (explained in the URL and downloadable from github) to get some of the passwords.
https://blog.netspi.com/decrypting-mssql-database-link-server-passwords/
Simon
It seems to work. I was wondering if it would be a security issue, but that's probably not the root cause of the problem. I can't understand why are people still using mixed Authentication.