109 lines
3.7 KiB
C#
109 lines
3.7 KiB
C#
/*
|
|
Copyright (C) 2011-2012 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 dot10.DotNet;
|
|
using de4dot.blocks;
|
|
|
|
namespace de4dot.code.deobfuscators.Eazfuscator_NET {
|
|
class ResourceMethodsRestorer : MethodCallRestorerBase {
|
|
TypeDef getManifestResourceStreamType;
|
|
EmbeddedResource getManifestResourceStreamTypeResource;
|
|
|
|
public TypeDef Type {
|
|
get { return getManifestResourceStreamType; }
|
|
}
|
|
|
|
public Resource Resource {
|
|
get { return getManifestResourceStreamTypeResource; }
|
|
}
|
|
|
|
public ResourceMethodsRestorer(ModuleDefinition module)
|
|
: base(module) {
|
|
}
|
|
|
|
public void find(ISimpleDeobfuscator simpleDeobfuscator, IDeobfuscator deob) {
|
|
foreach (var type in module.Types) {
|
|
if (type.Fields.Count != 1)
|
|
continue;
|
|
if (type.HasNestedTypes || type.HasGenericParameters || type.IsValueType)
|
|
continue;
|
|
if (DotNetUtils.getField(type, "System.Reflection.Assembly") == null)
|
|
continue;
|
|
if (DotNetUtils.getMethod(type, ".cctor") == null)
|
|
continue;
|
|
|
|
var getStream2 = getTheOnlyMethod(type, "System.IO.Stream", "(System.Reflection.Assembly,System.Type,System.String)");
|
|
var getNames = getTheOnlyMethod(type, "System.String[]", "(System.Reflection.Assembly)");
|
|
var bitmapCtor = getTheOnlyMethod(type, "System.Drawing.Bitmap", "(System.Type,System.String)");
|
|
var iconCtor = getTheOnlyMethod(type, "System.Drawing.Icon", "(System.Type,System.String)");
|
|
if (getStream2 == null && getNames == null && bitmapCtor == null && iconCtor == null)
|
|
continue;
|
|
|
|
var resource = findGetManifestResourceStreamTypeResource(type, simpleDeobfuscator, deob);
|
|
if (resource == null && getStream2 != null)
|
|
continue;
|
|
|
|
getManifestResourceStreamType = type;
|
|
createGetManifestResourceStream2(getStream2);
|
|
createGetManifestResourceNames(getNames);
|
|
createBitmapCtor(bitmapCtor);
|
|
createIconCtor(iconCtor);
|
|
getManifestResourceStreamTypeResource = resource;
|
|
break;
|
|
}
|
|
}
|
|
|
|
EmbeddedResource findGetManifestResourceStreamTypeResource(TypeDef type, ISimpleDeobfuscator simpleDeobfuscator, IDeobfuscator deob) {
|
|
foreach (var method in type.Methods) {
|
|
if (!method.IsPrivate || !method.IsStatic || method.Body == null)
|
|
continue;
|
|
if (!DotNetUtils.isMethod(method, "System.String", "(System.Reflection.Assembly,System.Type,System.String)"))
|
|
continue;
|
|
simpleDeobfuscator.deobfuscate(method);
|
|
simpleDeobfuscator.decryptStrings(method, deob);
|
|
foreach (var s in DotNetUtils.getCodeStrings(method)) {
|
|
var resource = DotNetUtils.getResource(module, s) as EmbeddedResource;
|
|
if (resource != null)
|
|
return resource;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
static MethodDef getTheOnlyMethod(TypeDef type, string returnType, string parameters) {
|
|
MethodDef foundMethod = null;
|
|
|
|
foreach (var method in type.Methods) {
|
|
if (!method.IsStatic || method.Body == null || method.HasGenericParameters)
|
|
continue;
|
|
if (method.IsPrivate)
|
|
continue;
|
|
if (!DotNetUtils.isMethod(method, returnType, parameters))
|
|
continue;
|
|
|
|
if (foundMethod != null)
|
|
return null;
|
|
foundMethod = method;
|
|
}
|
|
|
|
return foundMethod;
|
|
}
|
|
}
|
|
}
|