Add support for versions v35-v39

[roytu]

This is mostly working except for DummyAssemblyGenerator.cs, where custom attribute-related code is disabled. I also make some assumptions in StructGenerator.cs regarding how IL2CPP_TYPE_VAR and IL2CPP_TYPE_MVAR are treated.

Version 35

Metadata changes:

• [REMOVED] Il2CppTypeDefinition.elementTypeIndex
• [REMOVED] Il2CppStringLiteral.length

Version 38

Metadata changes:

• [REMOVED] Metadata.interfaceIndices replaced with interfaceOffsetPairs
• [CHANGED] Metadata.constraintIndices is a uint16_t, not a uint32_t

Instead of having separate offset/size fields in Metadata, we now have Il2CppSectionMetadata objects which hold an offset/size/count triplet. Additionally, this version introduced three variable-sized types:

• TypeIndex
• TypeDefinitionIndex
• GenericContainerIndex

which can be 1, 2, or 4 bytes depending on the number of each object type we need to store.

Version 39

Introduced ParamIndex. No other changes.

[roytu]

#887 #891 #892 #894 #898 #900

Mentioning issues where this may be relevant.

[Madiha1441nora]

I just tested your fork, got this error :

Initializing metadata...
Metadata Version: 39
Initializing il2cpp file...
Il2Cpp Version: 39
Searching...
CodeRegistration : x
MetadataRegistration : x
Dumping...
Done!
Generate struct...
Done!
Generate dummy dll...
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at Il2CppDumper.DummyAssemblyGenerator.CreateGenericParameter(Il2CppGenericParameter param, IGenericParameterProvider iGenericParameterProvider) in C:\Users\x\Desktop\Il2CppDumper-39\Il2CppDumper\Utils\DummyAssemblyGenerator.cs:line 655
at Il2CppDumper.DummyAssemblyGenerator..ctor(Il2CppExecutor il2CppExecutor, Boolean addToken) in C:\Users\x\Desktop\Il2CppDumper-39\Il2CppDumper\Utils\DummyAssemblyGenerator.cs:line 139
at Il2CppDumper.DummyAssemblyExporter.Export(Il2CppExecutor il2CppExecutor, String outputDir, Boolean addToken) in C:\Users\x\Desktop\Il2CppDumper-39\Il2CppDumper\Outputs\DummyAssemblyExporter.cs:line 14
at Il2CppDumper.Program.Dump(Metadata metadata, Il2Cpp il2Cpp, String outputDir) in C:\Users\x\Desktop\Il2CppDumper-39\Il2CppDumper\Program.cs:line 271
at Il2CppDumper.Program.Main(String[] args) in C:\Users\x\Desktop\Il2CppDumper-39\Il2CppDumper\Program.cs:line 99

I can send you the game assembly + metadata, do you have Discord ?

[roytu]

Hey @Madiha1441nora , thanks for testing. I actually managed to recreate the bug with another sample, I pushed a fix.

The critical change is that constraintIndices was also changed to be a TypeIndex instead of an int32_t, so we deserialize it as such below:

constraintIndices = Version < 38
    ? ReadMetadataClassArray<Il2CppConstraintIndex>(header.genericParameterConstraintsOffset, header.genericParameterConstraintsSize)
   : ReadMetadataClassArray<Il2CppConstraintIndex>(header.genericParameterConstraints.offset, (int)header.genericParameterConstraints.size);

This fixed my sample, let me know if it fixes yours.

[Zepp7289]

could you please provide prebuilt binary in your fork, thx

[danielhm96]

is this work fine and can do it automatic ?

[bsskk7]

saved my day, tysm

[qaqFei]

unitypy cannot read typetree using the dummydll
libil2cpp.zip
global-metadata.zip

metadata wasn't protected

[ghostwwwwrr]

how 2 run?

[johmarjac]

Awesome it worked
i hope @Perfare will merge at some point

[Cheve-Chelios]

Thank you very much! Very helpful! It's working!

[johmarjac]

@roytu Can you check whether Enums get disassembled correctly? Idk if its the game that changed a specific enum to be a class now, but before it switched to a later unity version now with v39 dumper the same enum is now put as a class in the dummy dll, missing the values of each enum member ... :(

[vjshah7]

this change worked great for me, appreciate your work!

[govno2222]

Initializing metadata...
System.ArgumentOutOfRangeException: Stream length must be non-negative and less than 2^31 - 1 - origin. (Parameter 'value')
at System.IO.MemoryStream.set_Position(Int64 value)
at Il2CppDumper.BinaryStream.set_Position(UInt64 value) in C:\Users\niley\Downloads\Il2CppDumper-39\Il2CppDumper-39\Il2CppDumper\IO\BinaryStream.cs:line 89
at Il2CppDumper.BinaryStream.ReadClassArray[T](UInt64 addr, Int64 count) in C:\Users\niley\Downloads\Il2CppDumper-39\Il2CppDumper-39\Il2CppDumper\IO\BinaryStream.cs:line 360
at Il2CppDumper.Metadata.ReadMetadataClassArray[T](UInt32 addr, Int32 count) in C:\Users\niley\Downloads\Il2CppDumper-39\Il2CppDumper-39\Il2CppDumper\Il2Cpp\Metadata.cs:line 247
at Il2CppDumper.Metadata..ctor(Stream stream) in C:\Users\niley\Downloads\Il2CppDumper-39\Il2CppDumper-39\Il2CppDumper\Il2Cpp\Metadata.cs:line 117
at Il2CppDumper.Program.Init(String il2cppPath, String metadataPath, Metadata& metadata, Il2Cpp& il2Cpp) in C:\Users\niley\Downloads\Il2CppDumper-39\Il2CppDumper-39\Il2CppDumper\Program.cs:line 123
at Il2CppDumper.Program.Main(String[] args) in C:\Users\niley\Downloads\Il2CppDumper-39\Il2CppDumper-39\Il2CppDumper\Program.cs:line 97
Press any key to exit...

#global-metadata.dat

#libil2cpp.so

[alshauzbek]

топчик