How to pack back data.pak?

I'm just wondering, if there's an unpacker, y isn't there any packer? Coz if we can change spider larva's exp into 500k, that'll be freakingly high. And VGMs don't know if we're hacking coz we're hacking the mob's exp. They'll just think that we've almost reached 100% and we want to lv by killing spider larva right? Plz reply ASAP.

winhex

just search for repacker on google. But changing the xp on a mob is server side.

There's no reason to have a repacker unless you know and understand how data.hd works. To my knowledge, data.hd provides dekaron.exe with certain offsets to extract certain data.

we are talking about data.PAK!

-.- I know. But Data.hd holds the offsets dekaron.exe uses to look in data.pak. Dekaron.exe doesn't simply search throughout data.pak for the needed information (loading would take years that way). Yes, you could repack data.pak, but if you actually went through the trouble to repack it, you most likely changed some offsets. Then, dekaron.exe couldn't run the game properly. If you didn't add or subtract any characters, why the hell wouldn't you use WinHex? You see, if you could just repack it and dekaron.exe would accept it, you could even get the pre-BMR data.pak and use that instead. But, it won't work.