Support latest Eazfuscator.NET
This commit is contained in:
parent
83e3cc0f57
commit
511a061f64
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@ -159,7 +159,8 @@
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<Compile Include="deobfuscators\DeobUtils.cs" />
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<Compile Include="deobfuscators\DeobUtils.cs" />
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<Compile Include="deobfuscators\Dotfuscator\Deobfuscator.cs" />
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<Compile Include="deobfuscators\Dotfuscator\Deobfuscator.cs" />
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<Compile Include="deobfuscators\Dotfuscator\StringDecrypter.cs" />
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<Compile Include="deobfuscators\Dotfuscator\StringDecrypter.cs" />
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<Compile Include="deobfuscators\Eazfuscator_NET\Dynocode.cs" />
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<Compile Include="deobfuscators\Eazfuscator_NET\DynamicDynocodeIterator.cs" />
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<Compile Include="deobfuscators\Eazfuscator_NET\DynocodeService.cs" />
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<Compile Include="deobfuscators\MyPEImage.cs" />
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<Compile Include="deobfuscators\MyPEImage.cs" />
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<Compile Include="deobfuscators\dotNET_Reactor\v3\AntiStrongName.cs" />
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<Compile Include="deobfuscators\dotNET_Reactor\v3\AntiStrongName.cs" />
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<Compile Include="deobfuscators\dotNET_Reactor\v3\ApplicationModeDecrypter.cs" />
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<Compile Include="deobfuscators\dotNET_Reactor\v3\ApplicationModeDecrypter.cs" />
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@ -159,6 +159,8 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
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AddTypesToBeRemoved(stringDecrypter.DynocodeTypes, "Dynocode type");
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AddTypesToBeRemoved(stringDecrypter.DynocodeTypes, "Dynocode type");
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AddResourceToBeRemoved(stringDecrypter.Resource, "Encrypted strings");
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AddResourceToBeRemoved(stringDecrypter.Resource, "Encrypted strings");
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}
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}
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stringDecrypter.CloseServer();
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AddTypeToBeRemoved(assemblyResolver.Type, "Assembly resolver type");
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AddTypeToBeRemoved(assemblyResolver.Type, "Assembly resolver type");
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AddTypeToBeRemoved(assemblyResolver.OtherType, "Assembly resolver other type");
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AddTypeToBeRemoved(assemblyResolver.OtherType, "Assembly resolver other type");
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AddTypeToBeRemoved(resourceResolver.Type, "Resource resolver type");
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AddTypeToBeRemoved(resourceResolver.Type, "Resource resolver type");
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@ -214,6 +216,14 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
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DotNetUtils.RestoreBody(cctor, allInstructions, allExceptionHandlers);
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DotNetUtils.RestoreBody(cctor, allInstructions, allExceptionHandlers);
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}
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}
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protected override void Dispose(bool disposing) {
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if (disposing) {
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if (stringDecrypter != null)
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stringDecrypter.Dispose();
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}
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base.Dispose(disposing);
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}
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public override IEnumerable<int> GetStringDecrypterMethods() {
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public override IEnumerable<int> GetStringDecrypterMethods() {
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var list = new List<int>();
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var list = new List<int>();
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if (stringDecrypter.Method != null)
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if (stringDecrypter.Method != null)
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@ -0,0 +1,109 @@
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/*
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Copyright (C) 2011-2013 de4dot@gmail.com
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This file is part of de4dot.
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de4dot is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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de4dot is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with de4dot. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using AssemblyData;
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using de4dot.code.AssemblyClient;
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using dnlib.DotNet;
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namespace de4dot.code.deobfuscators.Eazfuscator_NET {
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class DynamicDynocodeIterator : IDisposable, IEnumerable<int> {
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IAssemblyClient assemblyClient;
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List<TypeDef> dynocodeTypes = new List<TypeDef>();
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public List<TypeDef> Types {
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get { return dynocodeTypes; }
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}
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class MyEnumerator : IEnumerator<int> {
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DynamicDynocodeIterator ddi;
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public MyEnumerator(DynamicDynocodeIterator ddi) {
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this.ddi = ddi;
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}
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public int Current {
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get {
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return (int)ddi.assemblyClient.GenericService.SendMessage(DynocodeService.MSG_CALL_GET_CURRENT, null);
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}
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}
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public void Dispose() {
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}
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object System.Collections.IEnumerator.Current {
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get { return Current; }
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}
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public bool MoveNext() {
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return (bool)ddi.assemblyClient.GenericService.SendMessage(DynocodeService.MSG_CALL_MOVE_NEXT, null);
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}
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public void Reset() {
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throw new NotImplementedException();
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}
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}
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public void Dispose() {
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if (assemblyClient != null)
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assemblyClient.Dispose();
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assemblyClient = null;
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}
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public void Initialize(ModuleDef module) {
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if (assemblyClient != null)
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return;
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var serverVersion = NewProcessAssemblyClientFactory.GetServerClrVersion(module);
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assemblyClient = new NewProcessAssemblyClientFactory(serverVersion).Create(AssemblyServiceType.Generic);
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assemblyClient.Connect();
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assemblyClient.WaitConnected();
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assemblyClient.GenericService.LoadUserService(typeof(DynocodeService), null);
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assemblyClient.GenericService.LoadAssembly(module.Location);
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}
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public void CreateEnumerable(MethodDef ctor, object[] args) {
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var type = ctor.DeclaringType;
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while (type.DeclaringType != null)
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type = type.DeclaringType;
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dynocodeTypes.Add(type);
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assemblyClient.GenericService.SendMessage(DynocodeService.MSG_CREATE_ENUMERABLE,
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new object[] { ctor.MDToken.ToUInt32(), args });
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}
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public void WriteEnumerableField(uint fieldToken, object value) {
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assemblyClient.GenericService.SendMessage(DynocodeService.MSG_WRITE_ENUMERABLE_FIELD,
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new object[] { fieldToken, value });
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}
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public void CreateEnumerator() {
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assemblyClient.GenericService.SendMessage(DynocodeService.MSG_CREATE_ENUMERATOR, null);
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}
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public IEnumerator<int> GetEnumerator() {
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return new MyEnumerator(this);
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}
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System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
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return new MyEnumerator(this);
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}
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}
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}
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@ -1,289 +0,0 @@
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/*
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Copyright (C) 2011-2013 de4dot@gmail.com
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This file is part of de4dot.
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de4dot is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation, either version 3 of the License, or
|
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(at your option) any later version.
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de4dot is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
|
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|
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You should have received a copy of the GNU General Public License
|
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along with de4dot. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System.Collections.Generic;
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using dnlib.DotNet;
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using dnlib.DotNet.Emit;
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using de4dot.blocks;
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namespace de4dot.code.deobfuscators.Eazfuscator_NET {
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interface IDynocodeGenerator {
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IEnumerable<int> GetValues(int input);
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}
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// Something added in EF 3.5 which they call Dynocode. The string decrypter can now
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// call some iterator classes that will return some integers that it will use to
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// XOR some key.
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class Dynocode {
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ISimpleDeobfuscator simpleDeobfuscator;
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Dictionary<TypeDef, IDynocodeGenerator> typeToDCGen = new Dictionary<TypeDef, IDynocodeGenerator>();
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class DCGen1 : IDynocodeGenerator {
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public int magic1;
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public int magic2;
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public int magic3;
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public int magic4;
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public int magic5;
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public int magic6;
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public int magic7;
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public IEnumerable<int> GetValues(int input) {
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yield return magic1;
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yield return magic2;
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yield return input ^ magic3;
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yield return magic4;
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yield return magic5;
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yield return magic6;
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yield return input ^ magic7;
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}
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}
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class DCGen2 : IDynocodeGenerator {
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public int magic1;
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public IEnumerable<int> GetValues(int input) {
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int x = 0;
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int y = 1;
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while (true) {
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yield return y;
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if (--input == 0)
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break;
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int tmp = y;
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y = (x + y + input) ^ magic1;
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x = tmp;
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}
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}
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}
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class DCGen3 : IDynocodeGenerator {
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public int magic1;
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public int magic2;
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public DCGen2 dc2;
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public IEnumerable<int> GetValues(int input) {
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int i = 7;
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foreach (var val in dc2.GetValues(input)) {
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int x = val ^ input;
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if ((x % 4) == 0)
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x ^= magic1;
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if ((x % 16) == 0)
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x ^= magic2;
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yield return x;
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if (--i == 0)
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break;
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}
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}
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}
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public IEnumerable<TypeDef> Types {
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get {
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foreach (var type in typeToDCGen.Keys)
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yield return type.DeclaringType;
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}
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}
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public Dynocode(ISimpleDeobfuscator simpleDeobfuscator) {
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this.simpleDeobfuscator = simpleDeobfuscator;
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}
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public IDynocodeGenerator GetDynocodeGenerator(TypeDef type) {
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if (type == null)
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return null;
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var dt = type.DeclaringType;
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if (dt == null)
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return null;
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IDynocodeGenerator dcGen;
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if (typeToDCGen.TryGetValue(type, out dcGen))
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return dcGen;
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if (dt.NestedTypes.Count == 1)
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dcGen = GetDCGen1(type);
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else if (dt.NestedTypes.Count == 2)
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dcGen = GetDCGen3(type);
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typeToDCGen[type] = dcGen;
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return dcGen;
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}
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DCGen1 GetDCGen1(TypeDef type) {
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var method = GetMoveNext(type);
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if (method == null)
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return null;
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simpleDeobfuscator.Deobfuscate(method);
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var swLabels = GetSwitchLabels(method);
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if (swLabels == null || swLabels.Count < 7)
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return null;
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var dcGen = new DCGen1();
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if (!GetMagicDC1(method, swLabels[0], out dcGen.magic1))
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return null;
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if (!GetMagicDC1(method, swLabels[1], out dcGen.magic2))
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return null;
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if (!GetMagicXorDC1(method, swLabels[2], out dcGen.magic3))
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return null;
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if (!GetMagicDC1(method, swLabels[3], out dcGen.magic4))
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return null;
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if (!GetMagicDC1(method, swLabels[4], out dcGen.magic5))
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return null;
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if (!GetMagicDC1(method, swLabels[5], out dcGen.magic6))
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return null;
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if (!GetMagicXorDC1(method, swLabels[6], out dcGen.magic7))
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return null;
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return dcGen;
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}
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static IList<Instruction> GetSwitchLabels(MethodDef method) {
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foreach (var instr in method.Body.Instructions) {
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||||||
if (instr.OpCode.Code != Code.Switch)
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||||||
continue;
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||||||
return instr.Operand as IList<Instruction>;
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}
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return null;
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||||||
}
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||||||
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||||||
static bool GetMagicDC1(MethodDef method, Instruction target, out int magic) {
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magic = 0;
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||||||
var instrs = method.Body.Instructions;
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||||||
int index = instrs.IndexOf(target);
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||||||
if (index < 0)
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||||||
return false;
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||||||
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||||||
for (int i = index; i < instrs.Count - 3; i++) {
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||||||
var instr = instrs[i];
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||||||
if (instr.OpCode.FlowControl != FlowControl.Next)
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||||||
return false;
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||||||
if (instr.OpCode.Code != Code.Stfld)
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||||||
continue;
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||||||
if (instrs[i + 1].OpCode.Code != Code.Ldarg_0)
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||||||
continue;
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||||||
var ldci4 = instrs[i + 2];
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||||||
if (!ldci4.IsLdcI4())
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||||||
continue;
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||||||
if (instrs[i + 3].OpCode.Code != Code.Stfld)
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||||||
continue;
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||||||
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|
||||||
magic = ldci4.GetLdcI4Value();
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|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
return false;
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|
||||||
}
|
|
||||||
|
|
||||||
static bool GetMagicXorDC1(MethodDef method, Instruction target, out int magic) {
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|
||||||
magic = 0;
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||||||
var instrs = method.Body.Instructions;
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||||||
int index = instrs.IndexOf(target);
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||||||
if (index < 0)
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||||||
return false;
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||||||
|
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||||||
for (int i = index; i < instrs.Count - 2; i++) {
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||||||
var instr = instrs[i];
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|
||||||
if (instr.OpCode.FlowControl != FlowControl.Next)
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||||||
return false;
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||||||
if (!instr.IsLdcI4())
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||||||
continue;
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||||||
if (instrs[i + 1].OpCode.Code != Code.Xor)
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continue;
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if (instrs[i + 2].OpCode.Code != Code.Stfld)
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continue;
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||||||
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||||||
magic = instr.GetLdcI4Value();
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||||||
return true;
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||||||
}
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||||||
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|
||||||
return false;
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||||||
}
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|
||||||
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|
||||||
DCGen3 GetDCGen3(TypeDef type) {
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|
||||||
var method = GetMoveNext(type);
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|
||||||
if (method == null)
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|
||||||
return null;
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|
||||||
simpleDeobfuscator.Deobfuscate(method);
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|
||||||
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|
||||||
var dcGen = new DCGen3();
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|
||||||
int index = 0;
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|
||||||
if (!GetMagicDC3(method, ref index, out dcGen.magic1))
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||||||
return null;
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|
||||||
if (!GetMagicDC3(method, ref index, out dcGen.magic2))
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|
||||||
return null;
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|
||||||
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|
||||||
var dt = type.DeclaringType;
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|
||||||
dcGen.dc2 = GetDCGen2(dt.NestedTypes[0] == type ? dt.NestedTypes[1] : dt.NestedTypes[0]);
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||||||
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|
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return dcGen;
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|
||||||
}
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||||||
|
|
||||||
static bool GetMagicDC3(MethodDef method, ref int index, out int magic) {
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|
||||||
var instrs = method.Body.Instructions;
|
|
||||||
for (int i = index; i < instrs.Count - 2; i++) {
|
|
||||||
var ldci4 = instrs[i];
|
|
||||||
if (!ldci4.IsLdcI4())
|
|
||||||
continue;
|
|
||||||
if (instrs[i + 1].OpCode.Code != Code.Xor)
|
|
||||||
continue;
|
|
||||||
if (instrs[i + 2].OpCode.Code != Code.Stfld)
|
|
||||||
continue;
|
|
||||||
|
|
||||||
index = i + 3;
|
|
||||||
magic = ldci4.GetLdcI4Value();
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
magic = 0;
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
DCGen2 GetDCGen2(TypeDef type) {
|
|
||||||
var method = GetMoveNext(type);
|
|
||||||
if (method == null)
|
|
||||||
return null;
|
|
||||||
simpleDeobfuscator.Deobfuscate(method);
|
|
||||||
|
|
||||||
var dcGen = new DCGen2();
|
|
||||||
int index = 0;
|
|
||||||
if (!GetMagicDC3(method, ref index, out dcGen.magic1))
|
|
||||||
return null;
|
|
||||||
|
|
||||||
return dcGen;
|
|
||||||
}
|
|
||||||
|
|
||||||
static MethodDef GetMoveNext(TypeDef type) {
|
|
||||||
foreach (var m in type.Methods) {
|
|
||||||
if (!m.IsVirtual)
|
|
||||||
continue;
|
|
||||||
foreach (var mo in m.Overrides) {
|
|
||||||
if (mo.MethodDeclaration.FullName == "System.Boolean System.Collections.IEnumerator::MoveNext()")
|
|
||||||
return m;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
foreach (var m in type.Methods) {
|
|
||||||
if (!m.IsVirtual)
|
|
||||||
continue;
|
|
||||||
if (m.Name != "MoveNext")
|
|
||||||
continue;
|
|
||||||
if (!DotNetUtils.IsMethod(m, "System.Boolean", "()"))
|
|
||||||
continue;
|
|
||||||
return m;
|
|
||||||
}
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
100
de4dot.code/deobfuscators/Eazfuscator_NET/DynocodeService.cs
Normal file
100
de4dot.code/deobfuscators/Eazfuscator_NET/DynocodeService.cs
Normal file
|
@ -0,0 +1,100 @@
|
||||||
|
/*
|
||||||
|
Copyright (C) 2011-2013 de4dot@gmail.com
|
||||||
|
|
||||||
|
This file is part of de4dot.
|
||||||
|
|
||||||
|
de4dot is free software: you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation, either version 3 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
de4dot is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with de4dot. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
using System.Reflection;
|
||||||
|
using AssemblyData;
|
||||||
|
|
||||||
|
namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
|
class DynocodeService : IUserGenericService {
|
||||||
|
public const int MSG_CREATE_ENUMERABLE = 0;
|
||||||
|
public const int MSG_WRITE_ENUMERABLE_FIELD = 1;
|
||||||
|
public const int MSG_CREATE_ENUMERATOR = 2;
|
||||||
|
public const int MSG_CALL_GET_CURRENT = 3;
|
||||||
|
public const int MSG_CALL_MOVE_NEXT = 4;
|
||||||
|
|
||||||
|
Module reflObfModule;
|
||||||
|
IEnumerable<int> ienumerable = null;
|
||||||
|
IEnumerator<int> ienumerator = null;
|
||||||
|
|
||||||
|
[CreateUserGenericService]
|
||||||
|
public static IUserGenericService Create() {
|
||||||
|
return new DynocodeService();
|
||||||
|
}
|
||||||
|
|
||||||
|
public void AssemblyLoaded(Assembly assembly) {
|
||||||
|
this.reflObfModule = assembly.ManifestModule;
|
||||||
|
}
|
||||||
|
|
||||||
|
public object HandleMessage(int msg, object[] args) {
|
||||||
|
switch (msg) {
|
||||||
|
case MSG_CREATE_ENUMERABLE:
|
||||||
|
CreateEnumerable((uint)args[0], args[1] as object[]);
|
||||||
|
return true;
|
||||||
|
|
||||||
|
case MSG_WRITE_ENUMERABLE_FIELD:
|
||||||
|
WriteEnumerableField((uint)args[0], args[1] as object);
|
||||||
|
return true;
|
||||||
|
|
||||||
|
case MSG_CREATE_ENUMERATOR:
|
||||||
|
CreateEnumerator();
|
||||||
|
return true;
|
||||||
|
|
||||||
|
case MSG_CALL_GET_CURRENT:
|
||||||
|
return CallGetCurrent();
|
||||||
|
|
||||||
|
case MSG_CALL_MOVE_NEXT:
|
||||||
|
return CallMoveNext();
|
||||||
|
|
||||||
|
default:
|
||||||
|
throw new ApplicationException(string.Format("Invalid msg: {0:X8}", msg));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void CreateEnumerable(uint ctorToken, object[] args) {
|
||||||
|
var ctor = reflObfModule.ResolveMethod((int)ctorToken) as ConstructorInfo;
|
||||||
|
if (ctor == null)
|
||||||
|
throw new ApplicationException(string.Format("Invalid ctor with token: {0:X8}", ctorToken));
|
||||||
|
ienumerable = (IEnumerable<int>)ctor.Invoke(args);
|
||||||
|
}
|
||||||
|
|
||||||
|
void WriteEnumerableField(uint fieldToken, object value) {
|
||||||
|
var field = reflObfModule.ResolveField((int)fieldToken);
|
||||||
|
if (field == null)
|
||||||
|
throw new ApplicationException(string.Format("Invalid field: {0:X8}", fieldToken));
|
||||||
|
field.SetValue(ienumerable, value);
|
||||||
|
}
|
||||||
|
|
||||||
|
void CreateEnumerator() {
|
||||||
|
ienumerator = ienumerable.GetEnumerator();
|
||||||
|
}
|
||||||
|
|
||||||
|
int CallGetCurrent() {
|
||||||
|
return ienumerator.Current;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool CallMoveNext() {
|
||||||
|
return ienumerator.MoveNext();
|
||||||
|
}
|
||||||
|
|
||||||
|
public void Dispose() {
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
|
@ -50,9 +50,11 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
|
|
||||||
var getStream2 = GetTheOnlyMethod(type, "System.IO.Stream", "(System.Reflection.Assembly,System.Type,System.String)");
|
var getStream2 = GetTheOnlyMethod(type, "System.IO.Stream", "(System.Reflection.Assembly,System.Type,System.String)");
|
||||||
var getNames = GetTheOnlyMethod(type, "System.String[]", "(System.Reflection.Assembly)");
|
var getNames = GetTheOnlyMethod(type, "System.String[]", "(System.Reflection.Assembly)");
|
||||||
|
var getRefAsms = GetTheOnlyMethod(type, "System.Reflection.AssemblyName[]", "(System.Reflection.Assembly)");
|
||||||
var bitmapCtor = GetTheOnlyMethod(type, "System.Drawing.Bitmap", "(System.Type,System.String)");
|
var bitmapCtor = GetTheOnlyMethod(type, "System.Drawing.Bitmap", "(System.Type,System.String)");
|
||||||
var iconCtor = GetTheOnlyMethod(type, "System.Drawing.Icon", "(System.Type,System.String)");
|
var iconCtor = GetTheOnlyMethod(type, "System.Drawing.Icon", "(System.Type,System.String)");
|
||||||
if (getStream2 == null && getNames == null && bitmapCtor == null && iconCtor == null)
|
if (getStream2 == null && getNames == null && getRefAsms == null &&
|
||||||
|
bitmapCtor == null && iconCtor == null)
|
||||||
continue;
|
continue;
|
||||||
|
|
||||||
var resource = FindGetManifestResourceStreamTypeResource(type, simpleDeobfuscator, deob);
|
var resource = FindGetManifestResourceStreamTypeResource(type, simpleDeobfuscator, deob);
|
||||||
|
@ -62,6 +64,7 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
getManifestResourceStreamType = type;
|
getManifestResourceStreamType = type;
|
||||||
CreateGetManifestResourceStream2(getStream2);
|
CreateGetManifestResourceStream2(getStream2);
|
||||||
CreateGetManifestResourceNames(getNames);
|
CreateGetManifestResourceNames(getNames);
|
||||||
|
CreateGetReferencedAssemblies(getRefAsms);
|
||||||
CreateBitmapCtor(bitmapCtor);
|
CreateBitmapCtor(bitmapCtor);
|
||||||
CreateIconCtor(iconCtor);
|
CreateIconCtor(iconCtor);
|
||||||
getManifestResourceStreamTypeResource = resource;
|
getManifestResourceStreamTypeResource = resource;
|
||||||
|
|
|
@ -27,7 +27,7 @@ using de4dot.blocks;
|
||||||
using de4dot.blocks.cflow;
|
using de4dot.blocks.cflow;
|
||||||
|
|
||||||
namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
class StringDecrypter {
|
class StringDecrypter : IDisposable {
|
||||||
ModuleDefMD module;
|
ModuleDefMD module;
|
||||||
TypeDef stringType;
|
TypeDef stringType;
|
||||||
MethodDef stringMethod;
|
MethodDef stringMethod;
|
||||||
|
@ -47,7 +47,7 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
EfConstantsReader stringMethodConsts;
|
EfConstantsReader stringMethodConsts;
|
||||||
bool isV32OrLater;
|
bool isV32OrLater;
|
||||||
int? validStringDecrypterValue;
|
int? validStringDecrypterValue;
|
||||||
Dynocode dynocode;
|
DynamicDynocodeIterator dynocode;
|
||||||
|
|
||||||
class StreamHelperType {
|
class StreamHelperType {
|
||||||
public TypeDef type;
|
public TypeDef type;
|
||||||
|
@ -228,7 +228,7 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
}
|
}
|
||||||
|
|
||||||
bool FindConstants(ISimpleDeobfuscator simpleDeobfuscator) {
|
bool FindConstants(ISimpleDeobfuscator simpleDeobfuscator) {
|
||||||
dynocode = new Dynocode(simpleDeobfuscator);
|
dynocode = new DynamicDynocodeIterator();
|
||||||
simpleDeobfuscator.Deobfuscate(stringMethod);
|
simpleDeobfuscator.Deobfuscate(stringMethod);
|
||||||
stringMethodConsts = new EfConstantsReader(stringMethod);
|
stringMethodConsts = new EfConstantsReader(stringMethod);
|
||||||
|
|
||||||
|
@ -671,7 +671,11 @@ done: ;
|
||||||
if (index + 4 >= instrs.Count)
|
if (index + 4 >= instrs.Count)
|
||||||
return false;
|
return false;
|
||||||
var ldloc = instrs[index + 3];
|
var ldloc = instrs[index + 3];
|
||||||
if (!ldloc.IsLdloc() || instrs[index + 4].OpCode.Code != Code.Stfld)
|
var stfld = instrs[index + 4];
|
||||||
|
if (!ldloc.IsLdloc() || stfld.OpCode.Code != Code.Stfld)
|
||||||
|
return false;
|
||||||
|
var enumerableField = stfld.Operand as FieldDef;
|
||||||
|
if (enumerableField == null)
|
||||||
return false;
|
return false;
|
||||||
|
|
||||||
var initValue = emu.GetLocal(ldloc.GetLocal(stringMethod.Body.Variables)) as Int32Value;
|
var initValue = emu.GetLocal(ldloc.GetLocal(stringMethod.Body.Variables)) as Int32Value;
|
||||||
|
@ -692,19 +696,46 @@ done: ;
|
||||||
if (initValue2 == null || !initValue2.AllBitsValid())
|
if (initValue2 == null || !initValue2.AllBitsValid())
|
||||||
return false;
|
return false;
|
||||||
|
|
||||||
var dcGen = dynocode.GetDynocodeGenerator(ctor.DeclaringType);
|
int loopStart = GetIndexOfCall(instrs, index, leaveIndex, "System.Int32 System.Collections.Generic.IEnumerator`1<System.Int32>::get_Current()");
|
||||||
if (dcGen == null)
|
int loopEnd = GetIndexOfCall(instrs, loopStart, leaveIndex, "System.Boolean System.Collections.IEnumerator::MoveNext()");
|
||||||
|
if (loopStart < 0 || loopEnd < 0)
|
||||||
return false;
|
return false;
|
||||||
int loopLocalValue = initValue2.value;
|
loopStart++;
|
||||||
foreach (var val in dcGen.GetValues(initValue.value))
|
loopEnd--;
|
||||||
loopLocalValue ^= val;
|
|
||||||
|
dynocode.Initialize(module);
|
||||||
|
var ctorArg = emu.Pop() as Int32Value;
|
||||||
|
if (ctorArg == null || !ctorArg.AllBitsValid())
|
||||||
|
return false;
|
||||||
|
dynocode.CreateEnumerable(ctor, new object[] { ctorArg.value });
|
||||||
|
dynocode.WriteEnumerableField(enumerableField.MDToken.ToUInt32(), initValue.value);
|
||||||
|
dynocode.CreateEnumerator();
|
||||||
|
foreach (var val in dynocode) {
|
||||||
|
emu.Push(new Int32Value(val));
|
||||||
|
for (int i = loopStart; i < loopEnd; i++)
|
||||||
|
emu.Emulate(instrs[i]);
|
||||||
|
}
|
||||||
|
|
||||||
emu.SetLocal(loopLocal, new Int32Value(loopLocalValue));
|
|
||||||
emu.Emulate(instr);
|
|
||||||
index = newIndex - 1;
|
index = newIndex - 1;
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static int GetIndexOfCall(IList<Instruction> instrs, int startIndex, int endIndex, string fullMethodName) {
|
||||||
|
if (startIndex < 0 || endIndex < 0)
|
||||||
|
return -1;
|
||||||
|
for (int i = startIndex; i < endIndex; i++) {
|
||||||
|
var instr = instrs[i];
|
||||||
|
if (instr.OpCode.Code != Code.Call && instr.OpCode.Code != Code.Callvirt)
|
||||||
|
continue;
|
||||||
|
var method = instr.Operand as IMethod;
|
||||||
|
if (method == null || method.FullName != fullMethodName)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
return i;
|
||||||
|
}
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
Local GetDCLoopLocal(int start, int end) {
|
Local GetDCLoopLocal(int start, int end) {
|
||||||
var instrs = stringMethod.Body.Instructions;
|
var instrs = stringMethod.Body.Instructions;
|
||||||
for (int i = start; i < end - 1; i++) {
|
for (int i = start; i < end - 1; i++) {
|
||||||
|
@ -980,5 +1011,15 @@ done: ;
|
||||||
|
|
||||||
return false;
|
return false;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
public void Dispose() {
|
||||||
|
CloseServer();
|
||||||
|
}
|
||||||
|
|
||||||
|
public void CloseServer() {
|
||||||
|
if (dynocode != null)
|
||||||
|
dynocode.Dispose();
|
||||||
|
dynocode = null;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -722,7 +722,7 @@ namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
||||||
decryptStringMethod.Body.ExceptionHandlers.Count >= 2 &&
|
decryptStringMethod.Body.ExceptionHandlers.Count >= 2 &&
|
||||||
new LocalTypes(decryptStringMethod).All(locals35) &&
|
new LocalTypes(decryptStringMethod).All(locals35) &&
|
||||||
CheckTypeFields2(fields35)) {
|
CheckTypeFields2(fields35)) {
|
||||||
return "3.5 - 3.6";
|
return "3.5 - 4.0";
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -71,6 +71,15 @@ namespace de4dot.code.deobfuscators {
|
||||||
Add(oldMethod, newMethod, OpCodes.Callvirt);
|
Add(oldMethod, newMethod, OpCodes.Callvirt);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
public void CreateGetReferencedAssemblies(MethodDef oldMethod) {
|
||||||
|
if (oldMethod == null)
|
||||||
|
return;
|
||||||
|
var assemblyType = builder.Type("System.Reflection", "Assembly", builder.CorLib);
|
||||||
|
var asmNameArray = builder.Array(builder.Type("System.Reflection", "AssemblyName", builder.CorLib));
|
||||||
|
var newMethod = builder.InstanceMethod("GetReferencedAssemblies", assemblyType.TypeDefOrRef, asmNameArray);
|
||||||
|
Add(oldMethod, newMethod, OpCodes.Callvirt);
|
||||||
|
}
|
||||||
|
|
||||||
public void CreateBitmapCtor(MethodDef oldMethod) {
|
public void CreateBitmapCtor(MethodDef oldMethod) {
|
||||||
if (oldMethod == null)
|
if (oldMethod == null)
|
||||||
return;
|
return;
|
||||||
|
|
Loading…
Reference in New Issue
Block a user