non-process-terminating shellcode

["Sanjay R" <2sanjayr () gmail com>]

Hi:
I am looking for some references for creating a shellcode that will
not terminate the exploited application (process that being exploited)
and on the same time, inject the payload that, for example, opens a
shell. I shall be obliged for any help and further readings on this.

thanks
-Sanjay
--
Postdoc, DIT, University of Trento, Italy