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deobfuscating ios dll


Andre3414

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I am just starting out my journey with modding IAP files. I use dnSPY to find the offsets of the methods I want to change and then use an arm64 to hex converter to then apply these changes.

I have been stumped with this code shown in the picture. (cmSzP.png) I have not found any useful methods for the past couple days of searching which leads me to believe they lie within the gibberish labels of methods. Some quick reasearch leads me to believe these methods have been obfuscated.

So far I have tried using de4dot to deobfuscate the code but it showed no difference after completing. Has anyone seen this style of obfuscation or know/have a tool that can tackle this.

The game in question is Survivor.io and I am happy to provide the decrypted dll files if it would help.

Many thanks,

A noob trying to learn modding

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11 minutes ago, Laxus said:

Dont think there is such tool for this

Ahh I see. Is there a method to make sense of the obfuscated code? All I could think of was trial and error but even then I have no idea what to trial lol.
 

how do modders here work around it? 

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6 minutes ago, Andre3414 said:

Ahh I see. Is there a method to make sense of the obfuscated code? All I could think of was trial and error but even then I have no idea what to trial lol.
 

how do modders here work around it? 

Your best bet is to download an older version of the app to see if it’s decrypted. Then save the hex code in a function, check it on newest version and test it that way. Only the developers have their own decryption tools.

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1 hour ago, Puddin said:

Your best bet is to download an older version of the app to see if it’s decrypted. Then save the hex code in a function, check it on newest version and test it that way. Only the developers have their own decryption tools.

Ok thanks I’ll try this! 
 

so I would find what function the offset is located at, then try and match it with the updated one?

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