97 lines
2.8 KiB
C#
97 lines
2.8 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.IO;
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namespace de4dot.PE {
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class Cor20Header : IFileLocation {
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public uint cb;
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public ushort majorRuntimeVersion;
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public ushort minorRuntimeVersion;
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public DataDirectory metaData;
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public uint flags;
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public uint entryPointToken;
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public DataDirectory resources;
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public DataDirectory strongNameSignature;
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public DataDirectory codeManagerTable;
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public DataDirectory vtableFixups;
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public DataDirectory exportAddressTableJumps;
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public DataDirectory managedNativeHeader;
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uint mdOffset, mdHeaderLength;
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public uint MetadataOffset {
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get { return mdOffset; }
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}
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public uint MetadataHeaderLength {
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get { return mdHeaderLength; }
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}
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uint offset;
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public uint Offset {
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get { return offset; }
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}
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public uint Length {
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get { return 18 * 4; }
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}
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public Cor20Header(BinaryReader reader) {
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offset = (uint)reader.BaseStream.Position;
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cb = reader.ReadUInt32();
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majorRuntimeVersion = reader.ReadUInt16();
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minorRuntimeVersion = reader.ReadUInt16();
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metaData.read(reader);
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flags = reader.ReadUInt32();
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entryPointToken = reader.ReadUInt32();
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resources.read(reader);
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strongNameSignature.read(reader);
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codeManagerTable.read(reader);
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vtableFixups.read(reader);
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exportAddressTableJumps.read(reader);
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managedNativeHeader.read(reader);
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}
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public void initMetadataTable(BinaryReader reader) {
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if (reader.ReadUInt32() != 0x424A5342)
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return;
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mdOffset = (uint)reader.BaseStream.Position - 4;
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reader.ReadUInt16(); // major version
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reader.ReadUInt16(); // minor version
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reader.ReadUInt32(); // reserved
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int slen = reader.ReadInt32();
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reader.BaseStream.Position += slen;
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reader.ReadUInt16(); // flags
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int streams = reader.ReadUInt16();
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for (int i = 0; i < streams; i++) {
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uint offset = reader.ReadUInt32();
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uint size = reader.ReadUInt32();
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skipString(reader);
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}
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mdHeaderLength = (uint)reader.BaseStream.Position - mdOffset;
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}
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void skipString(BinaryReader reader) {
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while (reader.ReadByte() != 0) {
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// nothing
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}
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reader.BaseStream.Position = (reader.BaseStream.Position + 3) & ~3;
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}
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}
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}
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