[Request Help] Packets

[boever]

Hello,

I am new on this forum, so greetings to u all.

I have a question about the packets sniffed by WPE.
While capturing packets i noticed that there is a difference between 2 packets who do the same action

For example :
say Hello first time : 19 2A 53 D4 4C 98 00 00 00 00 01 00 00 00 68 65 6C 6C 6F 00
say Hello second time : E9 06 CF 12 C4 35 00 00 00 00 01 00 00 00 68 65 6C 6C 6F 00

I notice that the last part (wich makes u say "Hello") remains the same.
But the first part is somehow coded.

So my question to u people is : How can i figure out this code?
Does it has someth to do with socket numbering?

Any suggestion is welcome !!
Regards