71 lines
2.6 KiB
C#
71 lines
2.6 KiB
C#
/*
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Copyright (C) 2011 de4dot@gmail.com
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This file is part of de4dot.
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de4dot is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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de4dot is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with de4dot. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System.Collections.Generic;
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using Mono.Cecil;
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using Mono.Cecil.Cil;
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using de4dot.blocks;
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namespace de4dot.code.deobfuscators.dotNET_Reactor {
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class BoolValueInliner : MethodReturnValueInliner {
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Dictionary<MethodReferenceAndDeclaringTypeKey, Func<MethodDefinition, object[], bool>> boolDecrypters = new Dictionary<MethodReferenceAndDeclaringTypeKey, Func<MethodDefinition, object[], bool>>();
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class MyCallResult : CallResult {
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public MethodReferenceAndDeclaringTypeKey methodKey;
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public MyCallResult(Block block, int callEndIndex, MethodReference method)
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: base(block, callEndIndex) {
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this.methodKey = new MethodReferenceAndDeclaringTypeKey(method);
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}
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}
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public bool HasHandlers {
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get { return boolDecrypters.Count != 0; }
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}
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public void add(MethodDefinition method, Func<MethodDefinition, object[], bool> handler) {
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if (method != null)
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boolDecrypters[new MethodReferenceAndDeclaringTypeKey(method)] = handler;
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}
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protected override void inlineReturnValues(IList<CallResult> callResults) {
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foreach (var callResult in callResults) {
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var block = callResult.block;
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int num = callResult.callEndIndex - callResult.callStartIndex + 1;
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block.replace(callResult.callStartIndex, num, DotNetUtils.createLdci4((bool)callResult.returnValue ? 1 : 0));
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Log.v("Decrypted boolean: {0}", callResult.returnValue);
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}
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}
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protected override void inlineAllCalls() {
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foreach (var tmp in callResults) {
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var callResult = (MyCallResult)tmp;
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var handler = boolDecrypters[callResult.methodKey];
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callResult.returnValue = handler((MethodDefinition)callResult.methodKey.MethodReference, callResult.args);
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}
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}
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protected override CallResult createCallResult(MethodReference method, Block block, int callInstrIndex) {
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if (!boolDecrypters.ContainsKey(new MethodReferenceAndDeclaringTypeKey(method)))
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return null;
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return new MyCallResult(block, callInstrIndex, method);
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}
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}
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}
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