2013-11-08 18:05:17 +08:00
|
|
|
|
/*
|
2014-03-12 05:15:43 +08:00
|
|
|
|
Copyright (C) 2011-2014 de4dot@gmail.com
|
2013-11-08 18:05:17 +08:00
|
|
|
|
|
|
|
|
|
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.IO;
|
|
|
|
|
using dnlib.DotNet;
|
|
|
|
|
using dnlib.DotNet.Emit;
|
|
|
|
|
|
|
|
|
|
namespace de4dot.code.deobfuscators.Agile_NET.vm.v2 {
|
|
|
|
|
class CsvmToCilMethodConverter : CsvmToCilMethodConverterBase {
|
|
|
|
|
VmOpCodeHandlerDetector opCodeDetector;
|
|
|
|
|
|
|
|
|
|
public CsvmToCilMethodConverter(IDeobfuscatorContext deobfuscatorContext, ModuleDefMD module, VmOpCodeHandlerDetector opCodeDetector)
|
|
|
|
|
: base(deobfuscatorContext, module) {
|
|
|
|
|
this.opCodeDetector = opCodeDetector;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
protected override List<Instruction> ReadInstructions(MethodDef cilMethod, CsvmMethodData csvmMethod) {
|
|
|
|
|
var reader = new BinaryReader(new MemoryStream(csvmMethod.Instructions));
|
|
|
|
|
var instrs = new List<Instruction>();
|
2014-05-10 15:00:43 +08:00
|
|
|
|
var gpContext = GenericParamContext.Create(cilMethod);
|
|
|
|
|
var handlerInfoReader = new OpCodeHandlerInfoReader(module, gpContext);
|
2013-11-08 18:05:17 +08:00
|
|
|
|
|
|
|
|
|
int numVmInstrs = reader.ReadInt32();
|
|
|
|
|
var vmInstrs = new ushort[numVmInstrs];
|
|
|
|
|
for (int i = 0; i < numVmInstrs; i++)
|
|
|
|
|
vmInstrs[i] = reader.ReadUInt16();
|
|
|
|
|
|
|
|
|
|
uint offset = 0;
|
|
|
|
|
for (int vmInstrIndex = 0; vmInstrIndex < numVmInstrs; vmInstrIndex++) {
|
|
|
|
|
var composite = opCodeDetector.Handlers[vmInstrs[vmInstrIndex]];
|
2013-11-24 05:00:13 +08:00
|
|
|
|
IList<HandlerTypeCode> handlerInfos = composite.HandlerTypeCodes;
|
2013-11-08 18:05:17 +08:00
|
|
|
|
if (handlerInfos.Count == 0)
|
2013-11-24 05:00:13 +08:00
|
|
|
|
handlerInfos = new HandlerTypeCode[] { HandlerTypeCode.Nop };
|
2013-11-08 18:05:17 +08:00
|
|
|
|
for (int hi = 0; hi < handlerInfos.Count; hi++) {
|
2013-11-24 05:00:13 +08:00
|
|
|
|
var instr = handlerInfoReader.Read(handlerInfos[hi], reader);
|
2013-11-08 18:05:17 +08:00
|
|
|
|
instr.Offset = offset;
|
|
|
|
|
offset += (uint)GetInstructionSize(instr);
|
|
|
|
|
SetCilToVmIndex(instr, vmInstrIndex);
|
|
|
|
|
if (hi == 0)
|
|
|
|
|
SetVmIndexToCil(instr, vmInstrIndex);
|
|
|
|
|
instrs.Add(instr);
|
|
|
|
|
}
|
|
|
|
|
}
|
2013-11-24 05:00:13 +08:00
|
|
|
|
|
2013-11-08 18:05:17 +08:00
|
|
|
|
return instrs;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|