新增InstinctPass,将 ObfuscationInstincts::FullNameOf和NameOf函数转为混淆前的原始类全名和类名
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fileFormatVersion: 2
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guid: bb4f71e54c6a07341883ba0c642505c1
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folderAsset: yes
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DefaultImporter:
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externalObjects: {}
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userData:
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using dnlib.DotNet;
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using dnlib.DotNet.Emit;
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using Obfuz.Editor;
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using Obfuz.Emit;
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using Obfuz.Settings;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.Security;
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using System.Text;
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using UnityEngine.Assertions;
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namespace Obfuz.ObfusPasses.Instinct
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{
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public class InstinctPass : InstructionObfuscationPassBase
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{
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public override ObfuscationPassType Type => ObfuscationPassType.None;
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protected override bool ForceProcessAllAssembliesAndIgnoreAllPolicy => true;
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public InstinctPass()
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{
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}
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public override void Start()
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{
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var ctx = ObfuscationPassContext.Current;
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}
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public override void Stop()
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{
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}
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protected override bool NeedObfuscateMethod(MethodDef method)
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{
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return true;
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}
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private string GetTypeName(TypeSig type)
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{
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type = type.RemovePinnedAndModifiers();
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switch(type.ElementType)
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{
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case ElementType.Class:
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case ElementType.ValueType:
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{
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return type.ReflectionName;
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}
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case ElementType.GenericInst:
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{
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type = ((GenericInstSig)type).GenericType;
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return type.ReflectionName;
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}
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default: return type.ReflectionName;
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}
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}
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private string GetTypeFullName(TypeSig type)
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{
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type = type.RemovePinnedAndModifiers();
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switch (type.ElementType)
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{
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case ElementType.Class:
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case ElementType.ValueType:
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{
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return type.ReflectionFullName;
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}
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case ElementType.GenericInst:
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{
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GenericInstSig genericInstSig = (GenericInstSig)type;
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var typeName = new StringBuilder(genericInstSig.GenericType.ReflectionFullName);
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typeName.Append("<").Append(string.Join(",", genericInstSig.GenericArguments.Select(GetTypeFullName))).Append(">");
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return typeName.ToString();
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}
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default: return type.ReflectionFullName;
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}
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}
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protected override bool TryObfuscateInstruction(MethodDef callingMethod, Instruction inst, IList<Instruction> instructions, int instructionIndex, List<Instruction> outputInstructions, List<Instruction> totalFinalInstructions)
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{
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Code code = inst.OpCode.Code;
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if (!(inst.Operand is IMethod method) || !method.IsMethod)
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{
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return false;
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}
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MethodDef methodDef = method.ResolveMethodDef();
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if (methodDef == null || methodDef.DeclaringType.FullName != "Obfuz.ObfuscationInstincts" || methodDef.DeclaringType.DefinitionAssembly.Name != ConstValues.ObfuzRuntimeAssemblyName)
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{
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return false;
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}
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string methodName = methodDef.Name;
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switch (methodName)
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{
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case "FullNameOf":
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case "NameOf":
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{
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MethodSpec methodSpec = (MethodSpec)method;
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GenericInstMethodSig gims = methodSpec.GenericInstMethodSig;
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Assert.AreEqual(1, gims.GenericArguments.Count, "FullNameOf should have exactly one generic argument");
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TypeSig type = gims.GenericArguments[0];
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switch (methodName)
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{
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case "FullNameOf":
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{
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string typeFullName = GetTypeFullName(type);
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outputInstructions.Add(Instruction.Create(OpCodes.Ldstr, typeFullName));
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break;
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}
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case "NameOf":
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{
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string typeName = GetTypeName(type);
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outputInstructions.Add(Instruction.Create(OpCodes.Ldstr, typeName));
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break;
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}
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default: throw new NotSupportedException($"Unsupported instinct method: {methodDef.FullName}");
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}
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break;
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}
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default: throw new NotSupportedException($"Unsupported instinct method: {methodDef.FullName}");
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}
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//Debug.Log($"memory encrypt field: {field}");
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return true;
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}
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}
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}
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@ -0,0 +1,11 @@
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fileFormatVersion: 2
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guid: 08027d16e09664c40b561715ef9326fc
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MonoImporter:
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externalObjects: {}
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serializedVersion: 2
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defaultReferences: []
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executionOrder: 0
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icon: {instanceID: 0}
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userData:
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assetBundleName:
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assetBundleVariant:
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@ -3,6 +3,7 @@ using Obfuz.Data;
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using Obfuz.Emit;
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using Obfuz.EncryptionVM;
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using Obfuz.ObfusPasses.CleanUp;
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using Obfuz.ObfusPasses.Instinct;
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using Obfuz.ObfusPasses.SymbolObfus;
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using Obfuz.Unity;
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using Obfuz.Utils;
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@ -42,6 +43,7 @@ namespace Obfuz
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_assemblyResolver = new CombinedAssemblyResolver(new PathAssemblyResolver(_coreSettings.assemblySearchPaths.ToArray()), new UnityProjectManagedAssemblyResolver(_coreSettings.buildTarget));
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_passPolicy = new ConfigurablePassPolicy(_coreSettings.assembliesToObfuscate, _coreSettings.enabledObfuscationPasses, _coreSettings.obfuscationPassRuleConfigFiles);
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_pipeline1.AddPass(new InstinctPass());
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foreach (var pass in _coreSettings.obfuscationPasses)
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{
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if (pass is SymbolObfusPass symbolObfusPass)
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@ -0,0 +1,31 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Obfuz
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{
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public static class ObfuscationInstincts
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{
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/// <summary>
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/// Returns the original full name before obfuscated of the type T
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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public static string FullNameOf<T>()
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{
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return typeof(T).FullName;
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}
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/// <summary>
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/// Returns the original name before obfuscated of the type T
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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public static string NameOf<T>()
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{
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return typeof(T).Name;
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}
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}
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}
|
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@ -0,0 +1,11 @@
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|||
fileFormatVersion: 2
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||||
guid: 84320ab4adc4cbc49bf5e8f4009b4a96
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MonoImporter:
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externalObjects: {}
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serializedVersion: 2
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defaultReferences: []
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executionOrder: 0
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icon: {instanceID: 0}
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userData:
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assetBundleName:
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assetBundleVariant:
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