[OT]Re: Accessing program counter registers from within C or Aseembler.

[Jim Nelson]

A M wrote:
> Hello, 
>
> Does anybody know how to access the address of the
> current executing instruction in C while the program
> is executing? 
>
> Also, is there a method to load a program image from
> memory not a file (an exec that works with a memory
> address)? Mainly I am looking for a method that brings
> a program image into memory modify parts of it and
> start the in-memory modified version. 
>
> Can anybody think of a method to replace a thread
> image without replacing the whole process image? 
>
> Thanks, 
>
> Ali

The Shellcoder's Handbook is probably the best book out there on the kind of stuff 
you're talking about.  Just be prepared - it's written on a rather advanced level.
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