It seems this has to be sended right after the connection has been made with the client.
[Packet]
Packet(0): 19
Packet(1): CC
Packet(2): CD
Packet(3): 73
Packet(4): CA
Packet(5): 5A
Packet(6): AE
Packet(7): CE
Packet(8): FD
Packet(9): F0
Packet(10): 33
Packet(11): 5A
Packet(12): 41
Packet(13): BC
Packet(14): 57
Packet(15): F6
Packet(16): F5
Packet(17): 98
Packet(18): B
Packet(19): 22
Packet(20): 39
Packet(21): 64
Packet(22): 6F
Packet(23): 3E
Packet(24): 6D
[Packet (Decimal version)]
Packet(0): 25
Packet(1): 204
Packet(2): 205
Packet(3): 115
Packet(4): 204
Packet(5): 85
Packet(6): 183
Packet(7): 220
Packet(8): 253
Packet(9): 240
Packet(10): 51
Packet(11): 90
Packet(12): 65
Packet(13): 188
Packet(14): 87
Packet(15): 246
Packet(16): 245
Packet(17): 152
Packet(18): 11
Packet(19): 34
Packet(20): 57
Packet(21): 100
Packet(22): 111
Packet(23): 62
Packet(24): 109
Figure out what to do with it.