private static void DecryptMethods(MethodDef methodDef, MethodBase invokeMethod, object fieldInstance)
{
var instructions = methodDef.Body.Instructions;
if (instructions.Count < 9)
{
return;
}
if (instructions[0].OpCode != OpCodes.Ldsfld)
{
return;
}
if (((FieldDef)instructions[0].Operand).FullName != "i <Module>::Invoke")
{
return;
}
ToRemove.Add(instructions[3].Operand);
int index = instructions[1].GetLdcI4Value();
var dynamicMethodBodyReader = new DynamicMethodBodyReader(methodDef.Module, invokeMethod.Invoke(fieldInstance, new object[] { index }));
dynamicMethodBodyReader.Read();
methodDef.FreeMethodBody();
methodDef.Body = dynamicMethodBodyReader.GetMethod().Body;
}
//TODO: Move this method
public static void FreeMethodBody(MethodDef method)
{
if (method != null) {
if (!MethodAnnotations.Instance.IsBodyModified(method))
method.FreeMethodBody();
}
}
void IndexCil(MethodDef md)
{
var mid = (int)md.MDToken.Raw;
var mcil = ExtractCil(md);
Claim.yea(CilIndex.TryAdd(mid, mcil));
md.FreeMethodBody();
}
//TODO: Move this method
public static void FreeMethodBody(MethodDef method)
{
if (method != null)
{
if (!MethodAnnotations.Instance.IsBodyModified(method))
{
method.FreeMethodBody();
}
}
}
internal void WriteMethod(MethodDef oldMethodDef, MethodDef newMethodDef)
{
if (oldMethodDef == null)
{
Console.WriteLine("[!] Failed to write " + newMethodDef);
return;
}
oldMethodDef.FreeMethodBody();
oldMethodDef.Body = newMethodDef.Body;
}
internal void WriteMethod(MethodDef methodDef)
{
MethodDef executingMethod = Script.currentMethod;
if (executingMethod == null)
{
Console.WriteLine("[!] Failed to write " + methodDef);
return;
}
Script.currentMethod = null;
executingMethod.FreeMethodBody();
executingMethod.Body = methodDef.Body;
}
internal void WriteMethod(MethodDef methodDef)
{
MethodDef method = Program._executingMethod;
if (method == null)
{
Console.WriteLine("Failed to write " + methodDef);
return;
}
Program._executingMethod = null;
method.FreeMethodBody();
method.Body = methodDef.Body;
}
private static void DecryptMethods(MethodDef methodDef, MethodBase invokeMethod, object fieldInstance)
{
if (!methodDef.HasBody)
{
return;
}
var instructions = methodDef.Body.Instructions;
if (instructions.Count > 2 &&
instructions[0].OpCode.Code == Code.Ldsfld &&
instructions[0].Operand.ToString().Contains("Invoke") &&
instructions[1].IsLdcI4())
{
try
{
var mdToken = ((IType)methodDef.Body.Instructions[3].Operand).MDToken.ToInt32();
JunkTypes.Add(methodDef.DeclaringType.NestedTypes.FirstOrDefault(net => net.MDToken.ToInt32() == mdToken));
Hooks.MethodBase = Assembly.ManifestModule.ResolveMethod(methodDef.MDToken.ToInt32());
var index = instructions[1].GetLdcI4Value();
var method = invokeMethod.Invoke(fieldInstance, new object[] { index });
var reader = new DynamicMethodBodyReader(Module, method);
reader.Read();
methodDef.FreeMethodBody();
methodDef.Body = reader.GetMethod().Body;
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}{Environment.NewLine}Method: {methodDef.FullName}{Environment.NewLine}MDToken: 0x{methodDef.MDToken}{Environment.NewLine}");
}
}
}