Packet coding help

[sobapi]

English isn't my main language so i try to be as short as possible:

Server protection is packet morphing constantly. I believe the API from the client is GetTickCount and increases from there.

So, for example, if i open bag 3 times, phx reads 3 diferent packets:

Size 3 -> 1+2
78
7E
AA

But the same packages, but reading with wireshark are:

Size 3
03 00 d4
03 00 d2
03 00 4c

So the packet is actually constant, NOT variable as seen in phk.

My question is: How can i make pkh to read packets, i believe, backward?