2011-12-21 03:11:05 +08:00
|
|
|
|
/*
|
|
|
|
|
Copyright (C) 2011 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.Collections.Generic;
|
|
|
|
|
using Mono.Cecil;
|
|
|
|
|
using Mono.Cecil.Cil;
|
|
|
|
|
|
|
|
|
|
namespace de4dot.blocks.cflow {
|
|
|
|
|
public class CflowDeobfuscator : ICflowDeobfuscator {
|
|
|
|
|
BlocksCflowDeobfuscator cflowDeobfuscator = new BlocksCflowDeobfuscator();
|
|
|
|
|
|
|
|
|
|
public bool InlineMethods { get; set; }
|
|
|
|
|
public bool InlineInstanceMethods { get; set; }
|
|
|
|
|
|
|
|
|
|
public CflowDeobfuscator() {
|
|
|
|
|
InlineMethods = true;
|
|
|
|
|
InlineInstanceMethods = false;
|
|
|
|
|
}
|
|
|
|
|
|
2011-12-26 06:10:17 +08:00
|
|
|
|
public void deobfuscate(MethodDefinition method) {
|
2011-12-21 03:11:05 +08:00
|
|
|
|
deobfuscate(method, (blocks) => {
|
|
|
|
|
cflowDeobfuscator.InlineMethods = InlineMethods;
|
|
|
|
|
cflowDeobfuscator.InlineInstanceMethods = InlineInstanceMethods;
|
|
|
|
|
cflowDeobfuscator.init(blocks);
|
|
|
|
|
cflowDeobfuscator.deobfuscate();
|
|
|
|
|
});
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool hasNonEmptyBody(MethodDefinition method) {
|
|
|
|
|
return method.Body != null && method.Body.Instructions.Count > 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void deobfuscate(MethodDefinition method, Action<Blocks> handler) {
|
|
|
|
|
if (hasNonEmptyBody(method)) {
|
|
|
|
|
var blocks = new Blocks(method);
|
|
|
|
|
|
|
|
|
|
handler(blocks);
|
|
|
|
|
|
|
|
|
|
IList<Instruction> allInstructions;
|
|
|
|
|
IList<ExceptionHandler> allExceptionHandlers;
|
|
|
|
|
blocks.getCode(out allInstructions, out allExceptionHandlers);
|
|
|
|
|
DotNetUtils.restoreBody(method, allInstructions, allExceptionHandlers);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|