[Hardware Hacking General] mpmc:
Glad I'm not the only one still playing with this box.

I did have a go at working out the protocol used between the box and the software, I got as far as understanding how they find each other. The software makes a UDP broadcast to 255.255.255.255 on port 8086 with the message "HS602". The box then sends a UDP message ("YES") back, direct to the caller on the same port. The box then opens tcp port 8087 to which the software connects & they converse..

Sample of their conversation goes like this..

Client to box..

00000000 38 01 af 00 8c e0 af 00 68 54 d1 6b ff ff ff 8....... hT.k...
0000000F 32 01 af 00 00 00 00 00 50 df af 00 8c e0 af 2....... P......
0000001E 01 00 03 00 4c d5 af 00 8c e0 af 00 68 54 d1 ....L... ....hT.
0000002D 32 01 db 02 7c df af 00 3e ee 73 6a 00 00 00 2...|... >.sj...
0000003C 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
0000004B 0f 01 00 00 f0 e6 af 00 bc e8 af 00 68 54 d1 ........ ....hT.
0000005A 04 01 00 00 0c e7 af 00 bc e8 af 00 68 54 d1 ........ ....hT.
00000069 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000078 0f 01 ec 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000087 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000096 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000000A5 0f 01 ee 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000000B4 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000000C3 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000000D2 0f 01 ef 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000000E1 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000000F0 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000000FF 0f 01 f0 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000010E 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000011D 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
0000012C 0f 01 f2 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000013B 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000014A 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000159 0f 01 f3 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000168 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000177 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000186 0f 01 f4 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000195 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000001A4 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000001B3 0f 01 f5 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000001C2 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000001D1 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000001E0 0f 01 f6 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000001EF 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000001FE 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
0000020D 0f 01 f7 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000021C 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000022B 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
0000023A 0f 01 f8 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000249 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000258 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000267 0f 01 f9 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000276 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000285 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000294 0f 01 fa 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000002A3 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000002B2 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000002C1 0f 01 fb 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000002D0 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000002DF 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000002EE 0f 01 fe 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000002FD 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000030C 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
0000031B 0f 01 ff 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000032A 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000339 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000348 0f 01 00 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000357 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000366 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000375 0f 01 01 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000384 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000393 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000003A2 0f 01 02 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000003B1 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000003C0 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000003CF 0f 01 03 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000003DE 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000003ED 32 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 2....... H...O.t
000003FC 0f 01 ec 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000040B 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000041A 32 01 d9 02 b8 f0 e6 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000429 0f 01 ed 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000438 04 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000447 32 01 d9 02 b8 f0 e6 02 48 e7 af 00 4f e7 74 2....... H...O.t
00000456 0f 01 ee 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......

box to client

00000000 38 01 af 00 8c e0 af 00 68 54 d1 6b ff ff ff 8....... hT.k...
0000000F 01 01 af 00 00 00 00 00 50 df af 00 8c e0 af ........ P......
0000001E 01 00 03 1b 4c d5 af 00 8c e0 af 00 68 54 d1 ....L... ....hT.
0000002D 01 01 db 02 7c df af 00 3e ee 73 6a 00 00 00 ....|... >.sj...
0000003C 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
0000004B 00 01 00 00 f0 e6 af 00 bc e8 af 00 68 54 d1 ........ ....hT.
0000005A 1b 01 00 00 0c e7 af 00 bc e8 af 00 68 54 d1 ........ ....hT.
00000069 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000078 00 01 ec 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000087 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000096 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000000A5 00 01 ee 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000000B4 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000000C3 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000000D2 00 01 ef 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000000E1 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000000F0 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000000FF 00 01 f0 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000010E 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000011D 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
0000012C 00 01 f2 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000013B 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000014A 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000159 00 01 f3 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000168 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000177 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000186 00 01 f4 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000195 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000001A4 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000001B3 00 01 f5 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000001C2 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000001D1 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000001E0 00 01 f6 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000001EF 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000001FE 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
0000020D 00 01 f7 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000021C 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000022B 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
0000023A 00 01 f8 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000249 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000258 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000267 00 01 f9 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000276 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000285 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000294 00 01 fa 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000002A3 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000002B2 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000002C1 00 01 fb 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000002D0 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000002DF 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000002EE 00 01 fe 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000002FD 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000030C 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
0000031B 00 01 ff 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000032A 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000339 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000348 00 01 00 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000357 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000366 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000375 00 01 01 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000384 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000393 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000003A2 00 01 02 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000003B1 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000003C0 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000003CF 00 01 03 03 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
000003DE 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
000003ED 01 01 d9 02 14 10 e7 02 48 e7 af 00 4f e7 74 ........ H...O.t
000003FC 00 01 ec 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
0000040B 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
0000041A 01 01 d9 02 b8 f0 e6 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000429 00 01 ed 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......
00000438 1b 01 d9 02 98 84 d9 02 00 00 00 00 00 00 00 ........ .......
00000447 01 01 d9 02 b8 f0 e6 02 48 e7 af 00 4f e7 74 ........ H...O.t
00000456 00 01 ee 02 e4 00 0b 00 01 00 00 00 00 00 00 ........ .......

I have no clue as to what this is! Hopefully you'll have better luck trying to decode it!