59 lines
2.8 KiB
C#
59 lines
2.8 KiB
C#
|
using dnlib.DotNet;
|
|||
|
|
using dnlib.DotNet.Emit;
|
|||
|
|
using Obfuz.Data;
|
|||
|
|
using Obfuz.Emit;
|
|||
|
|
using Obfuz.Settings;
|
|||
|
|
using Obfuz.Utils;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
|
|||
|
|
namespace Obfuz.ObfusPasses.CallObfus
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
public class DispatchProxyObfuscator : ObfuscatorBase
|
|||
|
|
{
|
|||
|
|
private readonly EncryptionScopeProvider _encryptionScopeProvider;
|
|||
|
|
private readonly ConstFieldAllocator _constFieldAllocator;
|
|||
|
|
private readonly DispatchProxyAllocator _proxyCallAllocator;
|
|||
|
|
private readonly GroupByModuleEntityManager _moduleEntityManager;
|
|||
|
|
|
|||
|
|
public DispatchProxyObfuscator(EncryptionScopeProvider encryptionScopeProvider, ConstFieldAllocator constFieldAllocator, GroupByModuleEntityManager moduleEntityManager, CallObfuscationSettingsFacade settings)
|
|||
|
|
{
|
|||
|
|
_encryptionScopeProvider = encryptionScopeProvider;
|
|||
|
|
_constFieldAllocator = constFieldAllocator;
|
|||
|
|
_moduleEntityManager = moduleEntityManager;
|
|||
|
|
_proxyCallAllocator = new DispatchProxyAllocator(encryptionScopeProvider, moduleEntityManager, settings);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public override void Done()
|
|||
|
|
{
|
|||
|
|
_proxyCallAllocator.Done();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public override bool Obfuscate(MethodDef callerMethod, IMethod calledMethod, bool callVir, List<Instruction> obfuscatedInstructions)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
MethodSig sharedMethodSig = MetaUtil.ToSharedMethodSig(calledMethod.Module.CorLibTypes, MetaUtil.GetInflatedMethodSig(calledMethod, null));
|
|||
|
|
ProxyCallMethodData proxyCallMethodData = _proxyCallAllocator.Allocate(callerMethod.Module, calledMethod, callVir);
|
|||
|
|
DefaultMetadataImporter importer = _moduleEntityManager.GetDefaultModuleMetadataImporter(callerMethod.Module, _encryptionScopeProvider);
|
|||
|
|
|
|||
|
|
//if (needCacheCall)
|
|||
|
|
//{
|
|||
|
|
// FieldDef cacheField = _constFieldAllocator.Allocate(callerMethod.Module, proxyCallMethodData.index);
|
|||
|
|
// obfuscatedInstructions.Add(Instruction.Create(OpCodes.Ldsfld, cacheField));
|
|||
|
|
//}
|
|||
|
|
//else
|
|||
|
|
//{
|
|||
|
|
// obfuscatedInstructions.Add(Instruction.CreateLdcI4(proxyCallMethodData.encryptedIndex));
|
|||
|
|
// obfuscatedInstructions.Add(Instruction.CreateLdcI4(proxyCallMethodData.encryptOps));
|
|||
|
|
// obfuscatedInstructions.Add(Instruction.CreateLdcI4(proxyCallMethodData.salt));
|
|||
|
|
// obfuscatedInstructions.Add(Instruction.Create(OpCodes.Call, importer.DecryptInt));
|
|||
|
|
//}
|
|||
|
|
|
|||
|
|
FieldDef cacheField = _constFieldAllocator.Allocate(callerMethod.Module, proxyCallMethodData.index);
|
|||
|
|
obfuscatedInstructions.Add(Instruction.Create(OpCodes.Ldsfld, cacheField));
|
|||
|
|
obfuscatedInstructions.Add(Instruction.Create(OpCodes.Call, proxyCallMethodData.proxyMethod));
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|