How to execute a method with elevated rights?

 Well, let's start with the question: What are elevated rights?

We focus on Windows only for this. Elevated rights are otherwise called Windows UAC control, which is formerly known as "Admin Rights."

Sometimes you will need this to install something in Windows or get permission to change the Registry in some parts.

So how can your application get these rights? 

You can (Shell)execute your application again with "RunAs" to get these rights from the user. But in this case, you must overcome your complete startup procedure, and perhaps a window will be shown. 

At this point it is much easier to put your code into a DLL - the only thing that you need on top of that is a small application to load your DLL.

You can write this in Delphi - piece of cake. 

I like to include everything my application needs in resource so you just need to copy my exe and dll's into on your drive and execute it.

Bad news: Your virus scanners really don't like applications embedded into other applications and I would like to keep the size to a minimum. 

So my Idea was a really small application written in ASM.

How do we write applications this small these days? We ask Chat-GPT. Easy task isn't it?
The last time I wrote ASM by hand it was for the Z80 CPU... So my knowledge is a bit rusty on how to assemble and link with modern tools. And to be honest - this was an even bigger challenge than expected.

To make this story short - with a friend (he wrote his own assembler and linker) it took 2h to find the right tool... FASM every other Assembler / Links did not do the job. 

The resulting application has 2048 bytes - as a packed resource I'm down to 384 bytes... This application can load one of my DLL's execute a procedure and the Exit-Code is the result.