Ghetto Anti-Network Capture Protection:

Use what you learned to "fix" this packet:

0000000: 4F 4B 41 59 xx xx xx xx 09 61 73 64 66 67 68 6A  OKAY.....asdfghj
0000010: 6B 6C                                            kl

Calculate the SHA-512 hash of the fixed packet and xor with the data below:

0000000: F7 C0 D1 AE DF 02 F4 FD 19 BC 50 EA 74 18 74 D1  ..........P.t.t.
0000010: D2 97 1B 7C 34 44 DE F1 05 B7 63 43 88 28 A0 66  ...|4D....cC.(.f
0000020: EE 77 7B D3 51 99 96 6E BE 08 3A 40 AA 5B 81 03  .w{.Q..n..:@.[..
0000030: 7C 2F 33 9C 93 7D FE AC C4 4F C2 49 55 76 BE B2  |/3..}...O.IUv..

DO NOT TRANSMIT THIS PACKET TO THE SERVER! Network traffic is unencrypted,
and you could help other teams get the flag. You don't want that, do you?

(use `xxd -g 1 -u -r` to quickly turn these hexdumps back into binary)