96 lines
2.5 KiB
C#
96 lines
2.5 KiB
C#
/*
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Copyright (C) 2011-2015 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 dnlib.DotNet;
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using dnlib.DotNet.Emit;
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using de4dot.blocks;
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namespace de4dot.code.deobfuscators.Eazfuscator_NET {
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static class EfUtils {
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public static int FindOpCodeIndex(MethodDef method, int index, Code code) {
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for (; index < method.Body.Instructions.Count; index++) {
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var instr = method.Body.Instructions[index];
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if (instr.OpCode.Code != code)
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continue;
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return index;
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}
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return -1;
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}
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public static int FindOpCodeIndex(MethodDef method, int index, Code code, string operandString) {
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while (index < method.Body.Instructions.Count) {
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index = FindOpCodeIndex(method, index, code);
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if (index < 0)
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break;
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var instr = method.Body.Instructions[index];
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if (instr.Operand.ToString() == operandString)
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return index;
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index++;
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}
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return -1;
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}
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public static Instruction GetNextStore(MethodDef method, ref int index) {
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for (; index < method.Body.Instructions.Count; index++) {
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var instr = method.Body.Instructions[index];
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switch (instr.OpCode.Code) {
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case Code.Starg:
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case Code.Starg_S:
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case Code.Stelem:
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case Code.Stelem_I:
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case Code.Stelem_I1:
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case Code.Stelem_I2:
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case Code.Stelem_I4:
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case Code.Stelem_I8:
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case Code.Stelem_R4:
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case Code.Stelem_R8:
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case Code.Stelem_Ref:
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case Code.Stfld:
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case Code.Stind_I:
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case Code.Stind_I1:
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case Code.Stind_I2:
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case Code.Stind_I4:
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case Code.Stind_I8:
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case Code.Stind_R4:
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case Code.Stind_R8:
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case Code.Stind_Ref:
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case Code.Stloc:
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case Code.Stloc_0:
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case Code.Stloc_1:
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case Code.Stloc_2:
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case Code.Stloc_3:
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case Code.Stloc_S:
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case Code.Stobj:
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case Code.Stsfld:
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return instr;
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}
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if (instr.OpCode.FlowControl != FlowControl.Next)
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break;
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}
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return null;
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}
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}
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}
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