SabreTools/SabreTools.Serialization
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Placeholder for section table trailer data

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This commit is contained in:
Matt Nadareski
2025-09-11 12:24:56 -04:00
parent 2c22924239
commit 1d6fa06e97
2 changed files with 49 additions and 5 deletions
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5
SabreTools.Serialization/Deserializers/PortableExecutable.cs
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@@ -103,11 +103,6 @@ namespace SabreTools.Serialization.Deserializers
pex.SectionTable[i] = ParseSectionHeader(data);
}
// TODO: Figure out a way to determine the end of the data here
// to find hidden things between the end of the section table and
// the beginning of the next data block. Some packers and protections
// can hide things here, e.g. ActiveMark
#endregion
#region COFF Symbol Table and COFF String Table

49
SabreTools.Serialization/Wrappers/PortableExecutable.cs
View File

@@ -390,6 +390,45 @@ namespace SabreTools.Serialization.Wrappers
/// <inheritdoc cref="Models.PortableExecutable.Executable.SectionTable"/>
public Models.PortableExecutable.SectionHeader[]? SectionTable => Model.SectionTable;
/// <summary>
/// Data after the section table, if it exists
/// </summary>
public byte[] SectionTrailerData
{
get
{
lock (_sectionTrailerDataLock)
{
// If we already have cached data, just use that immediately
if (_sectionTrailerData != null)
return _sectionTrailerData;
if (Stub?.Header?.NewExeHeaderAddr == null)
{
_sectionTrailerData = [];
return _sectionTrailerData;
}
if (COFFFileHeader == null)
{
_sectionTrailerData = [];
return _sectionTrailerData;
}
// Get the offset from the end of the section table
long endOfSectionTable = Stub.Header.NewExeHeaderAddr
+ 24 // Signature size + COFF file header size
+ COFFFileHeader.SizeOfOptionalHeader
+ (COFFFileHeader.NumberOfSections * 40); // Size of a section header
// TODO: Figure out how to determine the end of the extra data
_sectionTrailerData = [];
// Cache and return the stub executable data, even if null
return _sectionTrailerData;
}
}
}
/// <inheritdoc cref="Models.PortableExecutable.Executable.Stub"/>
public Models.MSDOS.Executable? Stub => Model.Stub;
@@ -745,6 +784,16 @@ namespace SabreTools.Serialization.Wrappers
/// </summary>
private readonly object _sectionStringDataLock = new();
/// <summary>
/// Data after the section table, if it exists
/// </summary>
private byte[]? _sectionTrailerData = null;
/// <summary>
/// Lock object for <see cref="_sectionTrailerData"/>
/// </summary>
private readonly object _sectionTrailerDataLock = new();
/// <summary>
/// Stub executable data, if it exists
/// </summary>