Metin2client.bin bypass Question

I have a question about metin2client.bin file
I want someone who knows to explain to me, how to edit the metin2client.bin to bypass checking index file .
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But this only work with private servers and i want to make one for official server.
Please if anyone know help me

I think its difficult because on most Private Server you havent got a Hackshield but on officials for sure they do.
So, you should be some kind of specialist to make a Bypass or some kind of Tool.