I haven't test this but this should work at private servers, Since when you are creating account the information must be send into server, SO the registering page has the password and other information for the SQL database, If there just would be easy way to get the orginal file players could login into the SQL database and edit their character information
Some servers require special made exploit and into others you can get with simply using FTP to download the account creating page.
After you have got the information you need SQL client to login and edit the information at the SQL database, Now this part requires knowenge from the spefic server so you know where is your character information, You can add items to your character, edit your character or make it even gm if needed - but if you don't want to get caught you probably don't want to do this.
Remember to use proxy so they cannot track you if you use exploit to get the
SQL information.
Using common sense while doing this is required, you don't want to run around in the game yelling that you have the SQL server password.
Some servers require special made exploit and into others you can get with simply using FTP to download the account creating page.
After you have got the information you need SQL client to login and edit the information at the SQL database, Now this part requires knowenge from the spefic server so you know where is your character information, You can add items to your character, edit your character or make it even gm if needed - but if you don't want to get caught you probably don't want to do this.
Remember to use proxy so they cannot track you if you use exploit to get the
SQL information.
Using common sense while doing this is required, you don't want to run around in the game yelling that you have the SQL server password.