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iii23
 Post subject: PK obb file
PostPosted: Tue Oct 20, 2020 7:52 pm 

Joined: Tue Oct 20, 2020 7:48 pm
Posts: 1
So, I found an obb to a tower defense game on android, and after using a hex editor on it, the header is "PK". I can simply rename it to .zip and extract, but is PK any special kind of compression? When u revompile it the obb is missing 200 out of 700 kilobytes approximately. I hope its something bms can handle.
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LolHacksRule
 Post subject: Re: PK obb file
PostPosted: Tue Oct 20, 2020 8:15 pm 
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Joined: Fri Apr 20, 2018 12:41 am
Posts: 760
Send the file

_________________
Hacking Angry Birds since 2016
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aluigi
 Post subject: Re: PK obb file
PostPosted: Thu Oct 22, 2020 4:54 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 12011
It's all normal. ZIP archives are compressed and therefore their new size may differ than the one you extracted the content from, even if the content is the same.
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Shokoniraya
 Post subject: Re: PK obb file
PostPosted: Fri Oct 23, 2020 9:37 am 
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Joined: Sat Sep 15, 2018 5:22 am
Posts: 390
aluigi wrote:
It's all normal. ZIP archives are compressed and therefore their new size may differ than the one you extracted the content from, even if the content is the same.

note that making or importng files by zip tools, archibve details will change too, such as partion flag or time stamp or comment, as far as I know, some games checking that flags, so that could be the problem and game can't read modifieded obb
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aluigi
 Post subject: Re: PK obb file
PostPosted: Sun Oct 25, 2020 4:55 pm 
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@Shokoniraya
I guess iii23 meant he edited the ZIP (OBB) by using a normal archiver, not quickbms obviously
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