(adsbygoogle = window.adsbygoogle || []).push({}); I've managed to sniff packets (I mean ALL not just the 'proxied' ones on the web server)

by making my PS3 connect via Ethernet cable connected directly to my PC on one Ethernet port and the other Ethernet is connected to router, and the connections are bridged, I've able to see every packet (almost all the packets appear decrypted, or 'unreadable' using WireShark) But I'm trying to find out is there a packet editor that sniffs network packets that will allow me to modify packets instead of just sniffing them? Wireshark doesn't allow this so I'm wondering if there's another program

You mean once you find the packet data and mod it you are wondering to inject it? Well if thats the case go to Google and search "Colasoft Packet Builder" It is 100% free and allows you to inject packets.

Hmm, I can't use WireShark to copy the packets I need into the Packet Builder, I'll try to find another sniffer

you DON'T copy the packets, you HAVE to save the captured data from wireshark as a .cap file(capture) then import it into the builder.