I have try with x64dbg but its first time im using this program and i dont know how to use it sorry.
I have problem here:
bool L2Server :: RequestInvite (int nType, User * pInviter, User * pInvited, int nTimeout)
{
// Type - 0 - pledge, 2- party, 5 - friend, 6- alliance, 9 - MPCC...