I finally overcame my addiction to Conquer Online and finished this tool.
It lets you log outgoing packets, edit and send them.
To avoid any misunderstanding, it encrypts the packets for you in an indirect way.
Usage: Start Conquer Online, run the COPACldr.exe from anywhere, but remember the COPACdll.dll file must be in the same directory as COPACldr.exe. Now log in or move a bit with your character so that it captures 1 packet and can get the send class. You are now able to send or log packets.
Feautures:
- Easy to use.
- High stability. (...

)
- It only modifies 5 bytes in the client, makes it easy to update when new patches come out.
- Multiple clients compatibility.
WARNING: Sending bad packets will get you immediately disconnected, and abusing bugs might get you jailed/banned.
Any suggestions/feedback/critics/bug reports are welcome.
v1.11:
- Added support for Conquer Online 2.
- Changed garbage packets a bit.
v1.10: (445 downloads)
- Added option to log incoming packets aswell.
v1.02:
- Instead of using Log / Edit radio boxes, there is only one Log checkbox.
- Added function to ignore 03F1/03F3/03F4 packets which are most of times annoying.
v1.01:
- Added an option to save changes of current logged packet.
- Added checks when sending packets with a size of 0.
- Added a warning message when the packet being sent has an invalid size.
- Fixed a small memory leak when sending a packet.
- By standard, it uses now around 400KB less memory.
- Ascii part in packet view is showing more characters.
- Added icon to main window.