Hacking Others il2cppdumper

[wolforedark]

Hello I am very new to this, and I have learned some things along the way. I want to decompile a PS4 game made in Unity, so any program like AssetRipper can extract the files from the fpkg I have. Doing this got me the binaries and the metadata, which I couldn't use right away, as I had to transform the Il2CppUserAssemblies.prx to Il2CppUserAssemblies.elf with the unfself.exe tool. This allowed me to use both files in programs like il2cppdumper or cpp2il, but inspecting the generated .dlls leads me to very little readable code (everything else: signatures, types, returns are fine, but I want method bodies).

Doing everything again with Il2cppdumper, I noticed that it gave me this "ERROR: This file may be protected." and "Detected this may be a dump file." Now I don't know if there's any further step I have to take in order to dump the code, or maybe I am using the program wrong or I messed up somwhere (maybe I have to dump the game while the PS4 is running? I would need to jailbreak it for that no?). Thank you so much in advance.

 

[The Real Jdbye]

Hello I am very new to this, and I have learned some things along the way. I want to decompile a PS4 game made in Unity, so any program like AssetRipper can extract the files from the fpkg I have. Doing this got me the binaries and the metadata, which I couldn't use right away, as I had to transform the Il2CppUserAssemblies.prx to Il2CppUserAssemblies.elf with the unfself.exe tool. This allowed me to use both files in programs like il2cppdumper or cpp2il, but inspecting the generated .dlls leads me to very little readable code (everything else: signatures, types, returns are fine, but I want method bodies).

Doing everything again with Il2cppdumper, I noticed that it gave me this "ERROR: This file may be protected." and "Detected this may be a dump file." Now I don't know if there's any further step I have to take in order to dump the code, or maybe I am using the program wrong or I messed up somwhere (maybe I have to dump the game while the PS4 is running? I would need to jailbreak it for that no?). Thank you so much in advance.

il2cppdumper only generates stubs, the actual code is C/C++ and can't really be decompiled back into C# code, you can decompile it into C/C++ code with Ghidra but making any sense of the obfuscated code is not an easy task.

 

[wolforedark]

il2cppdumper only generates stubs, the actual code is C/C++ and can't really be decompiled back into C# code, you can decompile it into C/C++ code with Ghidra but making any sense of the obfuscated code is not an easy task.

Thank you for the fast response! What about cpp2IL? similar program whose output I can view in ILspy, in C#, but I face the same problem, very little info for method bodies.

 

[The Real Jdbye]

Thank you for the fast response! What about cpp2IL? similar program whose output I can view in ILspy, in C#, but I face the same problem, very little info for method bodies.

Same thing I believe. There aren't any tools that can decompile il2cpp fully into C# code. The conversion only works one way.

 

[wolforedark]

Sorry for reviving this, I was wondering if getting the files from the game with tools like this github/codemasterv/PS4Dumper which get the info on runtime and therefore, as I understand, decrypted could be done any other way? Perhaps with an emulator? Because doing it with a fpkg will not yield the same results right?
EDIT: is this a tutorial i should follow? guide-how-to-decrypt-dump-usermodules-by-grass-skeu.11396/