Reverse Engineering looking for help in file Decompression

Question

This is the first time i write a post looking for help after so so many years watch at StackOverflow. I started everythings from 0 to my current level with great works. I can't get it withou StackOverflow. This time i really need help for a file Decompression... It's start with

AF 1B B1 FA 10 00 00 00

after take a look to discover i found this file type

1. GLS_BINARY_LSB_FIRST
2. application/octet-stream

More info ... i can look some small files in it *.dll

• Assembly-CSharp-firstpass.dll
• Assembly-UnityScript-firstpass.dll
• zlib.net.dll (These file i can look in 010 editor by hex in plain text i think there are no encryption) .... and alot more ...

Yes i'm looking for help that what compression type it is How to decompress and recompress it ...

You can take a demo file at: https://mega.nz/#!K8Rm3CxD!O6dDHyLwbr6OdG18b9-1R6foBibbbQnRkMimyDdhJb0

Thank you commnunity ! Love you all. Great StackOverflow.

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p/s: for more detail: this file name is global-metadata.dat it's stored at

AppName\Payload\qjmu.app\Data\Managed\Metadata

This application for iOS, i changed file extension of iOS app to .zip and extracted these files. In another version of this iOS application there are no file pack or compression that i found these child files:

Assembly-CSharp.dll Assembly-CSharp-firstpass.dll Assembly-UnityScript.dll Assembly-UnityScript-firstpass.dll Boo.Lang.dll ICSharpCode.SharpZipLib.dll Ionic.Zlib.CF.dll Mono.Security.dll mscorlib.dll NSpeex.dll System.Core.dll System.dll System.Xml.dll System.Xml.Linq.dll UMGameAnalyticsLibForiOS.dll UnityEngine.dll UnityScript.Lang.dll zlib.net.dll

Answer 1

That file compresses by a factor of four, so it is not already compressed. Also a search showed no embedded deflate (zlib) compressed data.