Buffer overflows in packed code

[arnix]

>>Or am I wrong somehow?
No, you are right, "packing does not complicate the exploitation of buffer overflows".

This is a rather strange question, where did you hear that simple packing may prevent buffer overflow exploitation? You can read about some existing protection types at wikipedia:

hxxp://en.wikipedia.org/wiki/Buffer_overflow_protection
hxxp://en.wikipedia.org/wiki/Executable_space_protection