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Detect ILProtector version

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This commit is contained in:
de4dot 2013-11-16 20:04:23 +01:00
parent 5d308cc5df
commit 50eb86acfd
4 changed files with 204 additions and 9 deletions
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1
de4dot.code/de4dot.code.csproj
View File

@ -237,6 +237,7 @@
<Compile Include="deobfuscators\ILProtector\MainType.cs" />
<Compile Include="deobfuscators\ILProtector\MethodReader.cs" />
<Compile Include="deobfuscators\ILProtector\MethodsDecrypterBase.cs" />
<Compile Include="deobfuscators\ILProtector\RuntimeFileInfo.cs" />
<Compile Include="deobfuscators\ILProtector\StaticMethodsDecrypter.cs" />
<Compile Include="deobfuscators\InitializedDataCreator.cs" />
<Compile Include="deobfuscators\InlinedMethodsFinder.cs" />

25
de4dot.code/deobfuscators/ILProtector/Deobfuscator.cs
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@ -94,8 +94,17 @@ namespace de4dot.code.deobfuscators.ILProtector {
if (mainType.Detected && !staticMethodsDecrypter.Detected)
dynamicMethodsRestorer = new DynamicMethodsRestorer(module, mainType);
if (mainType.Detected && staticMethodsDecrypter.Detected && staticMethodsDecrypter.Version != null)
obfuscatorName += " " + staticMethodsDecrypter.Version;
if (mainType.Detected) {
if (staticMethodsDecrypter.Detected)
UpdateObfuscatorNameWith(staticMethodsDecrypter.Version);
else
UpdateObfuscatorNameWith(mainType.GetRuntimeVersionString());
}
}
void UpdateObfuscatorNameWith(string version) {
if (!string.IsNullOrEmpty(version))
obfuscatorName += " " + version;
}
public override void DeobfuscateBegin() {
@ -107,6 +116,14 @@ namespace de4dot.code.deobfuscators.ILProtector {
RemoveObfuscatorJunk(staticMethodsDecrypter);
}
else if (dynamicMethodsRestorer != null) {
Logger.v("Runtime file versions:");
Logger.Instance.Indent();
foreach (var info in mainType.RuntimeFileInfos) {
var version = info.GetVersion();
Logger.v("Version: {0} ({1})", version == null ? "UNKNOWN" : version.ToString(), info.PathName);
}
Logger.Instance.DeIndent();
dynamicMethodsRestorer.Decrypt();
RemoveObfuscatorJunk(dynamicMethodsRestorer);
}
@ -120,8 +137,8 @@ namespace de4dot.code.deobfuscators.ILProtector {
AddResourceToBeRemoved(methodsDecrypter.Resource, "Encrypted methods resource");
AddTypeToBeRemoved(mainType.InvokerDelegate, "Invoker delegate type");
AddFieldToBeRemoved(mainType.InvokerInstanceField, "Invoker delegate instance field");
foreach (var pm in mainType.ProtectMethods)
AddMethodToBeRemoved(pm, "Obfuscator 'Protect' init method");
foreach (var info in mainType.RuntimeFileInfos)
AddMethodToBeRemoved(info.ProtectMethod, "Obfuscator 'Protect' init method");
mainType.CleanUp();
}

23
de4dot.code/deobfuscators/ILProtector/MainType.cs
View File

@ -25,12 +25,12 @@ using de4dot.blocks;
namespace de4dot.code.deobfuscators.ILProtector {
class MainType {
ModuleDefMD module;
List<MethodDef> protectMethods;
List<RuntimeFileInfo> runtimeFileInfos;
TypeDef invokerDelegate;
FieldDef invokerInstanceField;
public IEnumerable<MethodDef> ProtectMethods {
get { return protectMethods; }
public List<RuntimeFileInfo> RuntimeFileInfos {
get { return runtimeFileInfos; }
}
public TypeDef InvokerDelegate {
@ -42,7 +42,7 @@ namespace de4dot.code.deobfuscators.ILProtector {
}
public bool Detected {
get { return protectMethods != null; }
get { return runtimeFileInfos != null; }
}
public MainType(ModuleDefMD module) {
@ -81,7 +81,9 @@ namespace de4dot.code.deobfuscators.ILProtector {
if (!GetDelegate(type, out invokerInstanceField, out invokerDelegate))
return false;
protectMethods = methods;
runtimeFileInfos = new List<RuntimeFileInfo>(methods.Count);
foreach (var method in methods)
runtimeFileInfos.Add(new RuntimeFileInfo(method));
return true;
}
@ -109,6 +111,17 @@ namespace de4dot.code.deobfuscators.ILProtector {
return list;
}
public string GetRuntimeVersionString() {
if (runtimeFileInfos == null)
return null;
foreach (var info in runtimeFileInfos) {
var version = info.GetVersion();
if (version != null)
return version.ToString();
}
return null;
}
public void CleanUp() {
var cctor = DotNetUtils.GetModuleTypeCctor(module);
if (cctor != null) {

164
de4dot.code/deobfuscators/ILProtector/RuntimeFileInfo.cs Normal file
View File

@ -0,0 +1,164 @@
/*
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.IO;
using System.Security.Cryptography;
using dnlib.DotNet;
namespace de4dot.code.deobfuscators.ILProtector {
class RuntimeFileInfo {
const uint HASH_FILE_OFFSET = 0x00040000;
const int HASH_SIZE = 0x1000;
public MethodDef ProtectMethod { get; private set; }
public string PathName { get; private set; }
public string Name { get; private set; }
Version runtimeVersion;
bool runtimeVersionInitialized;
class VersionInfo {
public Version Version { get; private set; }
public uint FileOffset { get; private set; }
public byte[] Hash { get; private set; }
public VersionInfo(Version version, byte[] hash) {
this.Version = version;
this.Hash = hash;
}
}
static readonly VersionInfo[] versionInfo32 = new VersionInfo[] {
new VersionInfo(new Version(1, 0, 7, 1), new byte[] { 0x8D, 0xCE, 0xAB, 0x0C, 0xA6, 0xA9, 0x4A, 0xA2, 0xCE, 0x43, 0xDE, 0x38, 0xEA, 0xDE, 0x0D, 0x3A }),
new VersionInfo(new Version(1, 0, 8, 0), new byte[] { 0x44, 0x09, 0x33, 0xCE, 0x90, 0x43, 0xF9, 0xC2, 0x2F, 0x11, 0x40, 0x1D, 0x18, 0xDA, 0x63, 0x3B }),
new VersionInfo(new Version(2, 0, 0, 0), new byte[] { 0xFD, 0x1D, 0x2B, 0x73, 0x2F, 0xD8, 0x27, 0x5F, 0xA3, 0x83, 0x76, 0x36, 0x29, 0x8E, 0x51, 0xA9 }),
new VersionInfo(new Version(2, 0, 1, 0), new byte[] { 0x0D, 0x5E, 0xC2, 0xA5, 0x0D, 0x7C, 0xE1, 0x8B, 0x57, 0x9F, 0xC8, 0x16, 0x25, 0x95, 0x70, 0xEB }),
new VersionInfo(new Version(2, 0, 2, 0), new byte[] { 0x9C, 0xED, 0x53, 0x3A, 0x97, 0x4B, 0x9E, 0xC7, 0xF4, 0x82, 0xE9, 0x84, 0xB4, 0x9A, 0xEB, 0xA6 }),
new VersionInfo(new Version(2, 0, 3, 0), new byte[] { 0x0C, 0xDD, 0xCF, 0x04, 0x20, 0x6E, 0x7A, 0x48, 0x26, 0x8B, 0x97, 0x8E, 0x58, 0x17, 0x9B, 0x51 }),
new VersionInfo(new Version(2, 0, 4, 0), new byte[] { 0x1D, 0x41, 0xE7, 0x6D, 0x17, 0xED, 0x51, 0x37, 0xA0, 0xFC, 0x98, 0x5F, 0x19, 0x97, 0xEF, 0x9D }),
new VersionInfo(new Version(2, 0, 5, 0), new byte[] { 0x60, 0xD8, 0x1D, 0x1C, 0x0C, 0xBF, 0x46, 0x82, 0x9C, 0xE3, 0x73, 0x8D, 0x88, 0x2E, 0x0E, 0xBA }),
new VersionInfo(new Version(2, 0, 6, 0), new byte[] { 0x85, 0x89, 0x66, 0x39, 0xC3, 0x04, 0x3D, 0x3F, 0xFD, 0xBC, 0xFA, 0x70, 0x1D, 0x04, 0x59, 0x89 }),
new VersionInfo(new Version(2, 0, 7, 0), new byte[] { 0x16, 0x5C, 0xE1, 0xA4, 0x30, 0xF7, 0x55, 0x26, 0x45, 0xB8, 0x43, 0x99, 0x2A, 0xC9, 0x6F, 0xD9 }),
new VersionInfo(new Version(2, 0, 7, 5), new byte[] { 0x11, 0x50, 0x25, 0x2C, 0x26, 0x03, 0x8B, 0xDA, 0xBC, 0x98, 0x7E, 0x81, 0x97, 0x3E, 0xCE, 0x31 }),
new VersionInfo(new Version(2, 0, 7, 6), new byte[] { 0x6F, 0x9C, 0xF2, 0xDB, 0x83, 0x76, 0x92, 0x6A, 0xC4, 0xAA, 0xAE, 0xFA, 0x3D, 0xB3, 0x69, 0x59 }),
new VersionInfo(new Version(2, 0, 8, 0), new byte[] { 0x96, 0x84, 0xA0, 0x32, 0x3A, 0xB5, 0xAD, 0x89, 0xD7, 0xCD, 0x69, 0x34, 0xF1, 0x5D, 0xF3, 0x3A }),
new VersionInfo(new Version(2, 0, 8, 5), new byte[] { 0xB8, 0xCF, 0xEA, 0xBA, 0xB6, 0xAD, 0xE5, 0xCC, 0xFB, 0xA4, 0xE4, 0xFE, 0x1A, 0x83, 0xE5, 0x85 }),
new VersionInfo(new Version(2, 0, 9, 0), new byte[] { 0xA4, 0x68, 0x70, 0xA2, 0x1E, 0xBB, 0x99, 0xAB, 0xDD, 0x8C, 0xCA, 0x55, 0x32, 0x12, 0x95, 0xB5 }),
new VersionInfo(new Version(2, 0, 10, 0), new byte[] { 0xC5, 0xDC, 0x27, 0x22, 0x8F, 0x09, 0xFB, 0x56, 0x84, 0x6E, 0x07, 0x62, 0x4E, 0xBF, 0x71, 0xA6 }),
new VersionInfo(new Version(2, 0, 11, 0), new byte[] { 0x57, 0xAD, 0xBC, 0xB0, 0x7F, 0x80, 0xEF, 0xEA, 0xC3, 0xB7, 0x9F, 0x27, 0x87, 0x0A, 0x4B, 0xFF }),
};
static readonly VersionInfo[] versionInfo64 = new VersionInfo[] {
new VersionInfo(new Version(1, 0, 7, 1), new byte[] { 0x68, 0x4C, 0xC0, 0xC2, 0x55, 0x75, 0x72, 0x09, 0x12, 0x10, 0xA4, 0xF3, 0xFE, 0x95, 0x4D, 0x7A }),
new VersionInfo(new Version(1, 0, 8, 0), new byte[] { 0x99, 0xAF, 0x3D, 0x39, 0x16, 0xC2, 0xD6, 0x10, 0x6E, 0x09, 0x64, 0xDE, 0xA4, 0xB3, 0x30, 0xE5 }),
new VersionInfo(new Version(2, 0, 0, 0), new byte[] { 0x02, 0x90, 0xDA, 0xBD, 0x37, 0xEE, 0x20, 0x86, 0xA7, 0x30, 0x31, 0x6D, 0x92, 0xEF, 0xB3, 0x01 }),
new VersionInfo(new Version(2, 0, 1, 0), new byte[] { 0xE8, 0xE7, 0x11, 0x6B, 0x52, 0x60, 0x5A, 0x4D, 0x5A, 0xC6, 0x76, 0xF5, 0xD3, 0x64, 0xB1, 0x03 }),
new VersionInfo(new Version(2, 0, 2, 0), new byte[] { 0xD3, 0x37, 0xA1, 0x69, 0xF4, 0x25, 0x86, 0x19, 0xC6, 0x89, 0x70, 0x82, 0x9A, 0x3E, 0xCC, 0x04 }),
new VersionInfo(new Version(2, 0, 3, 0), new byte[] { 0xB1, 0xF8, 0xCB, 0xFD, 0x2D, 0x47, 0x36, 0xF1, 0x8A, 0x1D, 0xEF, 0xA7, 0x07, 0x0C, 0xD9, 0x74 }),
new VersionInfo(new Version(2, 0, 4, 0), new byte[] { 0x53, 0xC7, 0xA8, 0x3F, 0xD8, 0x9D, 0xA1, 0x85, 0x04, 0x50, 0x1D, 0x19, 0xF4, 0x1F, 0xF4, 0x44 }),
new VersionInfo(new Version(2, 0, 5, 0), new byte[] { 0x32, 0x82, 0x4B, 0xC7, 0xBB, 0x32, 0xBF, 0x9F, 0xB7, 0x9B, 0x06, 0x90, 0x7B, 0xB0, 0x7B, 0x7C }),
new VersionInfo(new Version(2, 0, 6, 0), new byte[] { 0x4F, 0x02, 0x86, 0xA6, 0xCA, 0xFD, 0xC1, 0x47, 0xA1, 0xDB, 0x2F, 0x73, 0x94, 0x38, 0x2B, 0xA7 }),
new VersionInfo(new Version(2, 0, 7, 0), new byte[] { 0x43, 0xA4, 0xC1, 0xA8, 0xC7, 0x36, 0x55, 0xEB, 0x3F, 0xFF, 0xA0, 0xB3, 0x85, 0x00, 0x21, 0x99 }),
new VersionInfo(new Version(2, 0, 7, 5), new byte[] { 0x6A, 0xA8, 0x2B, 0x28, 0x0B, 0xEE, 0x4C, 0xF0, 0x57, 0x3F, 0x43, 0xD4, 0xFB, 0xBC, 0x5E, 0x8C }),
new VersionInfo(new Version(2, 0, 7, 6), new byte[] { 0xE5, 0xD7, 0x81, 0xBD, 0x85, 0x02, 0x10, 0xAC, 0x92, 0x4A, 0xF0, 0x35, 0xD2, 0x4C, 0x50, 0xA5 }),
new VersionInfo(new Version(2, 0, 8, 0), new byte[] { 0x14, 0x44, 0xD1, 0x34, 0x69, 0x4D, 0xC7, 0xB7, 0x4D, 0x91, 0x0E, 0x6C, 0x4C, 0x9B, 0x46, 0x8E }),
new VersionInfo(new Version(2, 0, 8, 5), new byte[] { 0x5C, 0xEE, 0x47, 0x36, 0x2B, 0x10, 0xAD, 0x5F, 0x66, 0x6D, 0x3F, 0xD4, 0xF4, 0x4A, 0xFF, 0xA1 }),
new VersionInfo(new Version(2, 0, 9, 0), new byte[] { 0x2B, 0x80, 0x93, 0x78, 0x22, 0x29, 0x8C, 0xA1, 0xED, 0xE4, 0x59, 0x1A, 0xEC, 0x5B, 0xAF, 0xA7 }),
new VersionInfo(new Version(2, 0, 10, 0), new byte[] { 0xE3, 0x56, 0xB4, 0x98, 0x38, 0x27, 0x29, 0x27, 0x56, 0x87, 0x88, 0xAD, 0xA3, 0x50, 0x61, 0x24 }),
new VersionInfo(new Version(2, 0, 11, 0), new byte[] { 0x08, 0xDD, 0x40, 0x28, 0x08, 0x61, 0xDA, 0xD3, 0xD1, 0x38, 0x2F, 0x8A, 0xE0, 0x21, 0x0E, 0xE9 }),
};
public RuntimeFileInfo(MethodDef protectMethod) {
this.ProtectMethod = protectMethod;
Name = !protectMethod.HasImplMap ? "<<UNKNOWN_NAME>>" : protectMethod.ImplMap.Module.Name.String;
PathName = Path.Combine(Path.GetDirectoryName(Utils.GetFullPath(protectMethod.Module.Location)), Name);
}
public Version GetVersion() {
if (runtimeVersionInitialized)
return runtimeVersion;
runtimeVersion = GetVersion2();
runtimeVersionInitialized = true;
return runtimeVersion;
}
Version GetVersion2() {
try {
var hash = GetHash(PathName);
var info = GetVersionInfo(hash, versionInfo32);
if (info != null)
return info.Version;
info = GetVersionInfo(hash, versionInfo64);
if (info != null)
return info.Version;
}
catch {
}
return null;
}
static VersionInfo GetVersionInfo(byte[] hash, VersionInfo[] infos) {
foreach (var info in infos) {
if (Equals(hash, info.Hash))
return info;
}
return null;
}
static byte[] GetHash(string fullPath) {
try {
using (var reader = new BinaryReader(new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read))) {
reader.BaseStream.Position = HASH_FILE_OFFSET;
var bytes = reader.ReadBytes(HASH_SIZE);
if (bytes.Length != HASH_SIZE)
return null;
using (var hasher = MD5.Create()) {
using (var outStream = new NullStream()) {
using (var csStream = new CryptoStream(outStream, hasher, CryptoStreamMode.Write))
new BinaryWriter(csStream).Write(bytes);
}
return hasher.Hash;
}
}
}
catch {
}
return null;
}
static bool Equals(byte[] a, byte[] b) {
if (a == null && b == null)
return true;
if (a == null || b == null)
return false;
if (a.Length != b.Length)
return false;
for (int i = 0; i < a.Length; i++) {
if (a[i] != b[i])
return false;
}
return true;
}
public override string ToString() {
return PathName;
}
}
}