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test

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This commit is contained in:
bird_egop 2025-04-12 16:42:44 +03:00
parent a6057bf072
commit f5bacc018c
9 changed files with 1313 additions and 5 deletions
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13
ParkanPlayground.sln
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@ -1,4 +1,3 @@

Microsoft Visual Studio Solution File, Format Version 12.00
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ParkanPlayground", "ParkanPlayground\ParkanPlayground.csproj", "{7DB19000-6F41-4BAE-A904-D34EFCA065E9}"
EndProject
@ -27,6 +26,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ScrLib", "ScrLib\ScrLib.csp
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VarsetLib", "VarsetLib\VarsetLib.csproj", "{0EC800E2-1444-40D5-9EDD-93276F4D1FF5}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Visualisator", "Visualisator\Visualisator.csproj", "{667A7E03-5CAA-4591-9980-F6C722911A35}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "X86Disassembler", "X86Disassembler\X86Disassembler.csproj", "{B5C2E94A-0F63-4E09-BC04-F2518E2CC1F0}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@ -77,5 +80,13 @@ Global
{0EC800E2-1444-40D5-9EDD-93276F4D1FF5}.Debug|Any CPU.Build.0 = Debug|Any CPU
{0EC800E2-1444-40D5-9EDD-93276F4D1FF5}.Release|Any CPU.ActiveCfg = Release|Any CPU
{0EC800E2-1444-40D5-9EDD-93276F4D1FF5}.Release|Any CPU.Build.0 = Release|Any CPU
{667A7E03-5CAA-4591-9980-F6C722911A35}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{667A7E03-5CAA-4591-9980-F6C722911A35}.Debug|Any CPU.Build.0 = Debug|Any CPU
{667A7E03-5CAA-4591-9980-F6C722911A35}.Release|Any CPU.ActiveCfg = Release|Any CPU
{667A7E03-5CAA-4591-9980-F6C722911A35}.Release|Any CPU.Build.0 = Release|Any CPU
{B5C2E94A-0F63-4E09-BC04-F2518E2CC1F0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{B5C2E94A-0F63-4E09-BC04-F2518E2CC1F0}.Debug|Any CPU.Build.0 = Debug|Any CPU
{B5C2E94A-0F63-4E09-BC04-F2518E2CC1F0}.Release|Any CPU.ActiveCfg = Release|Any CPU
{B5C2E94A-0F63-4E09-BC04-F2518E2CC1F0}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal

11
ParkanPlayground.sln.DotSettings.user Normal file
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@ -0,0 +1,11 @@
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4
ParkanPlayground/ParkanPlayground.csproj
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@ -13,4 +13,8 @@
<ProjectReference Include="..\VarsetLib\VarsetLib.csproj" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="SharpDisasm" Version="1.1.11" />
</ItemGroup>
</Project>

95
ParkanPlayground/Program.cs
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@ -1,4 +1,9 @@
using VarsetLib;
using System.Buffers.Binary;
using System.Numerics;
using System.Text.Json;
using ScrLib;
using SharpDisasm;
using VarsetLib;
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS\\default.scr";
@ -6,7 +11,7 @@
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS\\scream.scr";
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS\\scream1.scr";
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS";
var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS\\varset.var";
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS\\varset.var";
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\preload.lda";
//
// var fs = new FileStream(path, FileMode.Open);
@ -24,6 +29,88 @@ var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MISSIONS\\SCRIPTS\\v
// fs.Position == fs.Length
// );
var items = VarsetParser.Parse(path);
// var items = VarsetParser.Parse(path);
Console.WriteLine(items.Count);
// Console.WriteLine(items.Count);
// Span<byte> flt = stackalloc byte[4];
// flt[0] = 0x7f;
// flt[1] = 0x7f;
// flt[2] = 0xff;
// flt[3] = 0xff;
// var f = BinaryPrimitives.ReadSingleBigEndian(flt);
//
// Console.WriteLine(f);
// return;
// var path = "C:\\Program Files (x86)\\Nikita\\Iron Strategy\\MisLoad.dll";
var path = "C:\\ParkanUnpacked\\Land.msh\\2_03 00 00 00_Land.bin";
var fs = new FileStream(path, FileMode.Open);
var outputFs = new FileStream("Land.obj", FileMode.Create);
var sw = new StreamWriter(outputFs);
List<Vector3D> points = [];
var count = 0;
while (fs.Position < fs.Length)
{
var x = fs.ReadFloatLittleEndian();
var y = fs.ReadFloatLittleEndian();
var z = fs.ReadFloatLittleEndian();
var vertex = new Vector3D(x, y, z);
sw.WriteLine($"v {x} {y} {z}");
var seenIndex = points.FindIndex(vec => vec == vertex);
if (seenIndex != -1)
{
vertex.Duplicates = seenIndex;
}
points.Add(vertex);
count++;
}
File.WriteAllText("human-readable.json", JsonSerializer.Serialize(points, new JsonSerializerOptions()
{
WriteIndented = true
}));
Console.WriteLine($"Total vertices: {count}");
// for (int i = 0; i < count / 4; i++)
public record Vector3D(float X, float Y, float Z)
{
public int Duplicates { get; set; }
}
// var indices = string.Join(" ", Enumerable.Range(1, count));
//
// sw.WriteLine($"l {indices}");
//
// fs.Seek(0x1000, SeekOrigin.Begin);
//
// byte[] buf = new byte[34];
// fs.ReadExactly(buf);
//
// var disassembler = new SharpDisasm.Disassembler(buf, ArchitectureMode.x86_32);
// foreach (var instruction in disassembler.Disassemble())
// {
// Console.WriteLine($"{instruction.PC - instruction.Offset}: {instruction}");
//
// new Instruction()
// {
// Action = instruction.Mnemonic.ToString(),
// Arguments = {instruction.Operands[0].ToString()}
// };
// }
public class Instruction
{
public string Action { get; set; } = "";
public List<string> Arguments { get; set; } = [];
}

180
Visualisator/Program.cs Normal file
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@ -0,0 +1,180 @@
// Configure window options
using System.Buffers.Binary;
using System.Numerics;
using Silk.NET.OpenGL;
using Silk.NET.Windowing;
public static class Program
{
private static string vertexShaderSource = @"
#version 330 core
layout (location = 0) in vec3 aPos;
uniform mat4 uMVP;
void main()
{
gl_Position = uMVP * vec4(aPos, 1.0);
gl_PointSize = 8.0;
}
";
private static string fragmentShaderSource = @"
#version 330 core
out vec4 FragColor;
void main()
{
FragColor = vec4(1.0, 1.0, 1.0, 1.0); // White points
}
";
private static IWindow? window;
private static GL? gl = null;
private static uint shaderProgram = uint.MaxValue;
private static uint vao = uint.MaxValue;
private static uint vbo = uint.MaxValue;
private static Matrix4x4 mvp = new Matrix4x4();
private static float[] points = [];
public static void Main(string[] args)
{
var path = "C:\\ParkanUnpacked\\Land.msh\\2_03 00 00 00_Land.bin";
var bytes = File.ReadAllBytes(path);
points = new float[bytes.Length / 4];
for (int i = 0; i < bytes.Length / 4; i++)
{
points[i] = BinaryPrimitives.ReadSingleBigEndian(bytes.AsSpan()[(i * 4)..]);
}
var options = WindowOptions.Default;
options.API = new GraphicsAPI(ContextAPI.OpenGL, new APIVersion(3, 3));
options.Title = "3D Points with Silk.NET";
window = Window.Create(options);
window.Load += OnLoad;
window.Render += OnRender;
window.Run();
}
unsafe static void OnLoad()
{
gl = window.CreateOpenGL();
// Compile shaders
uint vertexShader = gl.CreateShader(ShaderType.VertexShader);
gl.ShaderSource(vertexShader, vertexShaderSource);
gl.CompileShader(vertexShader);
CheckShaderCompile(vertexShader);
uint fragmentShader = gl.CreateShader(ShaderType.FragmentShader);
gl.ShaderSource(fragmentShader, fragmentShaderSource);
gl.CompileShader(fragmentShader);
CheckShaderCompile(fragmentShader);
// Create shader program
shaderProgram = gl.CreateProgram();
gl.AttachShader(shaderProgram, vertexShader);
gl.AttachShader(shaderProgram, fragmentShader);
gl.LinkProgram(shaderProgram);
CheckProgramLink(shaderProgram);
gl.DeleteShader(vertexShader);
gl.DeleteShader(fragmentShader);
// Create VAO and VBO
vao = gl.GenVertexArray();
gl.BindVertexArray(vao);
vbo = gl.GenBuffer();
gl.BindBuffer(BufferTargetARB.ArrayBuffer, vbo);
unsafe
{
fixed (float* ptr = points)
{
gl.BufferData(
BufferTargetARB.ArrayBuffer,
(nuint) (points.Length * sizeof(float)),
ptr,
BufferUsageARB.StaticDraw
);
}
}
gl.VertexAttribPointer(
0,
3,
VertexAttribPointerType.Float,
false,
3 * sizeof(float),
(void*) 0
);
gl.EnableVertexAttribArray(0);
gl.BindVertexArray(0); // Unbind VAO
gl.Enable(EnableCap.DepthTest);
}
unsafe static void OnRender(double dt)
{
gl.ClearColor(
0.1f,
0.1f,
0.1f,
1.0f
);
gl.Clear((uint) (ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit));
// Set up MVP matrix
Matrix4x4 view = Matrix4x4.CreateLookAt(
new Vector3(100, 100, 40), // Camera position
Vector3.Zero, // Look at origin
Vector3.UnitY
); // Up direction
Matrix4x4 projection = Matrix4x4.CreatePerspectiveFieldOfView(
(float) Math.PI / 4f, // 45 degrees
(float) window.Size.X / window.Size.Y,
0.1f,
100f
);
mvp = view * projection;
gl.UseProgram(shaderProgram);
// Set MVP matrix (transpose=true for column-major format)
int mvpLocation = gl.GetUniformLocation(shaderProgram, "uMVP");
fixed (Matrix4x4* ptr = &mvp)
{
gl.UniformMatrix4(
mvpLocation,
1,
true,
(float*) ptr
);
}
gl.BindVertexArray(vao);
gl.DrawArrays(PrimitiveType.Points, 0, (uint) (points.Length / 3));
}
// Error checking methods
static void CheckShaderCompile(uint shader)
{
gl.GetShader(shader, ShaderParameterName.CompileStatus, out int success);
if (success == 0)
Console.WriteLine(gl.GetShaderInfoLog(shader));
}
static void CheckProgramLink(uint program)
{
gl.GetProgram(program, ProgramPropertyARB.LinkStatus, out int success);
if (success == 0)
Console.WriteLine(gl.GetProgramInfoLog(program));
}
}

18
Visualisator/Visualisator.csproj Normal file
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@ -0,0 +1,18 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
<PackageReference Include="NativeFileDialogSharp" Version="0.5.0" />
<PackageReference Include="Silk.NET" Version="2.22.0" />
<PackageReference Include="Silk.NET.OpenGL.Extensions.ImGui" Version="2.22.0" />
</ItemGroup>
</Project>

834
X86Disassembler/PEFormat.cs Normal file
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@ -0,0 +1,834 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
namespace X86Disassembler
{
/// <summary>
/// Represents a Portable Executable (PE) file format parser
/// </summary>
public class PEFormat
{
// DOS Header constants
private const ushort DOS_SIGNATURE = 0x5A4D; // 'MZ'
private const uint PE_SIGNATURE = 0x00004550; // 'PE\0\0'
// Optional Header Magic values
private const ushort PE32_MAGIC = 0x10B; // 32-bit executable
private const ushort PE32PLUS_MAGIC = 0x20B; // 64-bit executable
// Section characteristics flags
private const uint IMAGE_SCN_CNT_CODE = 0x00000020; // Section contains code
private const uint IMAGE_SCN_MEM_EXECUTE = 0x20000000; // Section is executable
private const uint IMAGE_SCN_MEM_READ = 0x40000000; // Section is readable
private const uint IMAGE_SCN_MEM_WRITE = 0x80000000; // Section is writable
// Data directories
private const int IMAGE_DIRECTORY_ENTRY_EXPORT = 0; // Export Directory
private const int IMAGE_DIRECTORY_ENTRY_IMPORT = 1; // Import Directory
private const int IMAGE_DIRECTORY_ENTRY_RESOURCE = 2; // Resource Directory
private const int IMAGE_DIRECTORY_ENTRY_EXCEPTION = 3; // Exception Directory
private const int IMAGE_DIRECTORY_ENTRY_SECURITY = 4; // Security Directory
private const int IMAGE_DIRECTORY_ENTRY_BASERELOC = 5; // Base Relocation Table
private const int IMAGE_DIRECTORY_ENTRY_DEBUG = 6; // Debug Directory
private const int IMAGE_DIRECTORY_ENTRY_ARCHITECTURE = 7; // Architecture Specific Data
private const int IMAGE_DIRECTORY_ENTRY_GLOBALPTR = 8; // RVA of GP
private const int IMAGE_DIRECTORY_ENTRY_TLS = 9; // TLS Directory
private const int IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG = 10; // Load Configuration Directory
private const int IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT = 11; // Bound Import Directory
private const int IMAGE_DIRECTORY_ENTRY_IAT = 12; // Import Address Table
private const int IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT = 13; // Delay Load Import Descriptors
private const int IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR = 14; // COM Runtime descriptor
// PE file data
private byte[] _fileData;
// Parsed headers
public DOSHeader DosHeader { get; private set; }
public FileHeader FileHeader { get; private set; }
public OptionalHeader OptionalHeader { get; private set; }
public List<SectionHeader> SectionHeaders { get; private set; }
public bool Is64Bit { get; private set; }
// Export and Import information
public ExportDirectory ExportDirectory { get; private set; }
public List<ExportedFunction> ExportedFunctions { get; private set; }
public List<ImportDescriptor> ImportDescriptors { get; private set; }
/// <summary>
/// Parses a PE file from the given byte array
/// </summary>
/// <param name="fileData">The raw file data</param>
public PEFormat(byte[] fileData)
{
_fileData = fileData;
SectionHeaders = new List<SectionHeader>();
ExportedFunctions = new List<ExportedFunction>();
ImportDescriptors = new List<ImportDescriptor>();
Parse();
}
/// <summary>
/// Parses the PE file structure
/// </summary>
private void Parse()
{
using (MemoryStream stream = new MemoryStream(_fileData))
using (BinaryReader reader = new BinaryReader(stream))
{
// Parse DOS header
DosHeader = ParseDOSHeader(reader);
// Move to PE header
reader.BaseStream.Seek(DosHeader.e_lfanew, SeekOrigin.Begin);
// Verify PE signature
uint peSignature = reader.ReadUInt32();
if (peSignature != PE_SIGNATURE)
{
throw new InvalidDataException("Invalid PE signature");
}
// Parse File Header
FileHeader = ParseFileHeader(reader);
// Parse Optional Header
OptionalHeader = ParseOptionalHeader(reader);
// Parse Section Headers
for (int i = 0; i < FileHeader.NumberOfSections; i++)
{
SectionHeaders.Add(ParseSectionHeader(reader));
}
// Parse Export Directory
if (OptionalHeader.DataDirectories.Length > IMAGE_DIRECTORY_ENTRY_EXPORT &&
OptionalHeader.DataDirectories[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress != 0)
{
ExportDirectory = ParseExportDirectory(reader, OptionalHeader.DataDirectories[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress);
ParseExportedFunctions(reader);
}
// Parse Import Descriptors
if (OptionalHeader.DataDirectories.Length > IMAGE_DIRECTORY_ENTRY_IMPORT &&
OptionalHeader.DataDirectories[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress != 0)
{
ImportDescriptors = ParseImportDescriptors(reader, OptionalHeader.DataDirectories[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
}
}
}
/// <summary>
/// Parses the DOS header
/// </summary>
private DOSHeader ParseDOSHeader(BinaryReader reader)
{
DOSHeader header = new DOSHeader();
header.e_magic = reader.ReadUInt16();
if (header.e_magic != DOS_SIGNATURE)
{
throw new InvalidDataException("Invalid DOS signature (MZ)");
}
header.e_cblp = reader.ReadUInt16();
header.e_cp = reader.ReadUInt16();
header.e_crlc = reader.ReadUInt16();
header.e_cparhdr = reader.ReadUInt16();
header.e_minalloc = reader.ReadUInt16();
header.e_maxalloc = reader.ReadUInt16();
header.e_ss = reader.ReadUInt16();
header.e_sp = reader.ReadUInt16();
header.e_csum = reader.ReadUInt16();
header.e_ip = reader.ReadUInt16();
header.e_cs = reader.ReadUInt16();
header.e_lfarlc = reader.ReadUInt16();
header.e_ovno = reader.ReadUInt16();
header.e_res = new ushort[4];
for (int i = 0; i < 4; i++)
{
header.e_res[i] = reader.ReadUInt16();
}
header.e_oemid = reader.ReadUInt16();
header.e_oeminfo = reader.ReadUInt16();
header.e_res2 = new ushort[10];
for (int i = 0; i < 10; i++)
{
header.e_res2[i] = reader.ReadUInt16();
}
header.e_lfanew = reader.ReadUInt32();
return header;
}
/// <summary>
/// Parses the File header
/// </summary>
private FileHeader ParseFileHeader(BinaryReader reader)
{
FileHeader header = new FileHeader();
header.Machine = reader.ReadUInt16();
header.NumberOfSections = reader.ReadUInt16();
header.TimeDateStamp = reader.ReadUInt32();
header.PointerToSymbolTable = reader.ReadUInt32();
header.NumberOfSymbols = reader.ReadUInt32();
header.SizeOfOptionalHeader = reader.ReadUInt16();
header.Characteristics = reader.ReadUInt16();
return header;
}
/// <summary>
/// Parses the Optional header
/// </summary>
private OptionalHeader ParseOptionalHeader(BinaryReader reader)
{
OptionalHeader header = new OptionalHeader();
// Standard fields
header.Magic = reader.ReadUInt16();
// Determine if this is a PE32 or PE32+ file
Is64Bit = header.Magic == PE32PLUS_MAGIC;
header.MajorLinkerVersion = reader.ReadByte();
header.MinorLinkerVersion = reader.ReadByte();
header.SizeOfCode = reader.ReadUInt32();
header.SizeOfInitializedData = reader.ReadUInt32();
header.SizeOfUninitializedData = reader.ReadUInt32();
header.AddressOfEntryPoint = reader.ReadUInt32();
header.BaseOfCode = reader.ReadUInt32();
// PE32 has BaseOfData, PE32+ doesn't
if (!Is64Bit)
{
header.BaseOfData = reader.ReadUInt32();
}
// Windows-specific fields
if (Is64Bit)
{
header.ImageBase = reader.ReadUInt64();
}
else
{
header.ImageBase = reader.ReadUInt32();
}
header.SectionAlignment = reader.ReadUInt32();
header.FileAlignment = reader.ReadUInt32();
header.MajorOperatingSystemVersion = reader.ReadUInt16();
header.MinorOperatingSystemVersion = reader.ReadUInt16();
header.MajorImageVersion = reader.ReadUInt16();
header.MinorImageVersion = reader.ReadUInt16();
header.MajorSubsystemVersion = reader.ReadUInt16();
header.MinorSubsystemVersion = reader.ReadUInt16();
header.Win32VersionValue = reader.ReadUInt32();
header.SizeOfImage = reader.ReadUInt32();
header.SizeOfHeaders = reader.ReadUInt32();
header.CheckSum = reader.ReadUInt32();
header.Subsystem = reader.ReadUInt16();
header.DllCharacteristics = reader.ReadUInt16();
// Size fields differ between PE32 and PE32+
if (Is64Bit)
{
header.SizeOfStackReserve = reader.ReadUInt64();
header.SizeOfStackCommit = reader.ReadUInt64();
header.SizeOfHeapReserve = reader.ReadUInt64();
header.SizeOfHeapCommit = reader.ReadUInt64();
}
else
{
header.SizeOfStackReserve = reader.ReadUInt32();
header.SizeOfStackCommit = reader.ReadUInt32();
header.SizeOfHeapReserve = reader.ReadUInt32();
header.SizeOfHeapCommit = reader.ReadUInt32();
}
header.LoaderFlags = reader.ReadUInt32();
header.NumberOfRvaAndSizes = reader.ReadUInt32();
// Data directories
int numDirectories = (int)Math.Min(header.NumberOfRvaAndSizes, 16); // Maximum of 16 directories
header.DataDirectories = new DataDirectory[numDirectories];
for (int i = 0; i < numDirectories; i++)
{
DataDirectory dir = new DataDirectory();
dir.VirtualAddress = reader.ReadUInt32();
dir.Size = reader.ReadUInt32();
header.DataDirectories[i] = dir;
}
return header;
}
/// <summary>
/// Parses a section header
/// </summary>
private SectionHeader ParseSectionHeader(BinaryReader reader)
{
SectionHeader header = new SectionHeader();
// Read section name (8 bytes)
byte[] nameBytes = reader.ReadBytes(8);
// Convert to string, removing any null characters
header.Name = Encoding.ASCII.GetString(nameBytes).TrimEnd('\0');
header.VirtualSize = reader.ReadUInt32();
header.VirtualAddress = reader.ReadUInt32();
header.SizeOfRawData = reader.ReadUInt32();
header.PointerToRawData = reader.ReadUInt32();
header.PointerToRelocations = reader.ReadUInt32();
header.PointerToLinenumbers = reader.ReadUInt32();
header.NumberOfRelocations = reader.ReadUInt16();
header.NumberOfLinenumbers = reader.ReadUInt16();
header.Characteristics = reader.ReadUInt32();
return header;
}
/// <summary>
/// Parses the Export Directory
/// </summary>
private ExportDirectory ParseExportDirectory(BinaryReader reader, uint rva)
{
ExportDirectory directory = new ExportDirectory();
reader.BaseStream.Seek(RvaToOffset(rva), SeekOrigin.Begin);
directory.Characteristics = reader.ReadUInt32();
directory.TimeDateStamp = reader.ReadUInt32();
directory.MajorVersion = reader.ReadUInt16();
directory.MinorVersion = reader.ReadUInt16();
directory.Name = reader.ReadUInt32();
directory.Base = reader.ReadUInt32();
directory.NumberOfFunctions = reader.ReadUInt32();
directory.NumberOfNames = reader.ReadUInt32();
directory.AddressOfFunctions = reader.ReadUInt32();
directory.AddressOfNames = reader.ReadUInt32();
directory.AddressOfNameOrdinals = reader.ReadUInt32();
// Read the DLL name
uint dllNameRVA = directory.Name;
reader.BaseStream.Seek(RvaToOffset(dllNameRVA), SeekOrigin.Begin);
byte[] dllNameBytes = reader.ReadBytes(256);
directory.DllName = Encoding.ASCII.GetString(dllNameBytes).TrimEnd('\0');
return directory;
}
/// <summary>
/// Parses the Import Descriptors
/// </summary>
private List<ImportDescriptor> ParseImportDescriptors(BinaryReader reader, uint rva)
{
List<ImportDescriptor> descriptors = new List<ImportDescriptor>();
try
{
reader.BaseStream.Seek(RvaToOffset(rva), SeekOrigin.Begin);
while (true)
{
ImportDescriptor descriptor = new ImportDescriptor();
descriptor.OriginalFirstThunk = reader.ReadUInt32();
descriptor.TimeDateStamp = reader.ReadUInt32();
descriptor.ForwarderChain = reader.ReadUInt32();
descriptor.Name = reader.ReadUInt32();
descriptor.FirstThunk = reader.ReadUInt32();
// Check if we've reached the end of the import descriptors
if (descriptor.OriginalFirstThunk == 0 && descriptor.Name == 0 && descriptor.FirstThunk == 0)
{
break;
}
try
{
// Read the DLL name
uint dllNameOffset = RvaToOffset(descriptor.Name);
reader.BaseStream.Seek(dllNameOffset, SeekOrigin.Begin);
List<byte> nameBytes = new List<byte>();
byte b;
while ((b = reader.ReadByte()) != 0)
{
nameBytes.Add(b);
}
descriptor.DllName = Encoding.ASCII.GetString(nameBytes.ToArray());
// Read the imported functions (use FirstThunk if OriginalFirstThunk is 0)
uint thunkRVA = descriptor.OriginalFirstThunk != 0 ? descriptor.OriginalFirstThunk : descriptor.FirstThunk;
if (thunkRVA != 0)
{
try
{
uint thunkOffset = RvaToOffset(thunkRVA);
uint currentThunkOffset = thunkOffset;
while (true)
{
reader.BaseStream.Seek(currentThunkOffset, SeekOrigin.Begin);
uint thunk = reader.ReadUInt32();
if (thunk == 0)
{
break;
}
ImportedFunction function = new ImportedFunction();
function.ThunkRVA = thunkRVA + (currentThunkOffset - thunkOffset);
// Check if the function is imported by ordinal
if ((thunk & 0x80000000) != 0)
{
function.IsOrdinal = true;
function.Ordinal = (ushort)(thunk & 0xFFFF);
function.Name = $"Ordinal_{function.Ordinal}";
}
else
{
// Read the function name and hint
try
{
uint nameOffset = RvaToOffset(thunk);
reader.BaseStream.Seek(nameOffset, SeekOrigin.Begin);
function.Hint = reader.ReadUInt16();
List<byte> funcNameBytes = new List<byte>();
byte c;
while ((c = reader.ReadByte()) != 0)
{
funcNameBytes.Add(c);
}
function.Name = Encoding.ASCII.GetString(funcNameBytes.ToArray());
}
catch (Exception)
{
function.Name = $"Function_at_{thunk:X8}";
}
}
descriptor.Functions.Add(function);
currentThunkOffset += 4; // Move to the next thunk
}
}
catch (Exception)
{
// Skip this thunk table if there's an error
}
}
}
catch (Exception)
{
// If we can't read the DLL name, use a placeholder
descriptor.DllName = $"DLL_at_{descriptor.Name:X8}";
}
descriptors.Add(descriptor);
}
}
catch (Exception)
{
// Return whatever descriptors we've managed to parse
}
return descriptors;
}
/// <summary>
/// Parses the exported functions using the export directory information
/// </summary>
private void ParseExportedFunctions(BinaryReader reader)
{
if (ExportDirectory == null)
{
return;
}
// Read the array of function addresses (RVAs)
uint[] functionRVAs = new uint[ExportDirectory.NumberOfFunctions];
reader.BaseStream.Seek(RvaToOffset(ExportDirectory.AddressOfFunctions), SeekOrigin.Begin);
for (int i = 0; i < ExportDirectory.NumberOfFunctions; i++)
{
functionRVAs[i] = reader.ReadUInt32();
}
// Read the array of name RVAs
uint[] nameRVAs = new uint[ExportDirectory.NumberOfNames];
reader.BaseStream.Seek(RvaToOffset(ExportDirectory.AddressOfNames), SeekOrigin.Begin);
for (int i = 0; i < ExportDirectory.NumberOfNames; i++)
{
nameRVAs[i] = reader.ReadUInt32();
}
// Read the array of name ordinals
ushort[] nameOrdinals = new ushort[ExportDirectory.NumberOfNames];
reader.BaseStream.Seek(RvaToOffset(ExportDirectory.AddressOfNameOrdinals), SeekOrigin.Begin);
for (int i = 0; i < ExportDirectory.NumberOfNames; i++)
{
nameOrdinals[i] = reader.ReadUInt16();
}
// Create a dictionary to map ordinals to names
Dictionary<ushort, string> ordinalToName = new Dictionary<ushort, string>();
for (int i = 0; i < ExportDirectory.NumberOfNames; i++)
{
// Read the function name
reader.BaseStream.Seek(RvaToOffset(nameRVAs[i]), SeekOrigin.Begin);
List<byte> nameBytes = new List<byte>();
byte b;
while ((b = reader.ReadByte()) != 0)
{
nameBytes.Add(b);
}
string name = Encoding.ASCII.GetString(nameBytes.ToArray());
// Map the ordinal to the name
ordinalToName[nameOrdinals[i]] = name;
}
// Create the exported functions
for (ushort i = 0; i < ExportDirectory.NumberOfFunctions; i++)
{
uint functionRVA = functionRVAs[i];
if (functionRVA == 0)
{
continue; // Skip empty entries
}
ExportedFunction function = new ExportedFunction();
function.Ordinal = (ushort)(i + ExportDirectory.Base);
function.Address = functionRVA;
// Check if this function has a name
if (ordinalToName.TryGetValue(i, out string name))
{
function.Name = name;
}
else
{
function.Name = $"Ordinal_{function.Ordinal}";
}
// Check if this is a forwarder
uint exportDirStart = OptionalHeader.DataDirectories[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
uint exportDirEnd = exportDirStart + OptionalHeader.DataDirectories[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
if (functionRVA >= exportDirStart && functionRVA < exportDirEnd)
{
function.IsForwarder = true;
// Read the forwarder string
reader.BaseStream.Seek(RvaToOffset(functionRVA), SeekOrigin.Begin);
List<byte> forwarderBytes = new List<byte>();
byte b;
while ((b = reader.ReadByte()) != 0)
{
forwarderBytes.Add(b);
}
function.ForwarderName = Encoding.ASCII.GetString(forwarderBytes.ToArray());
}
ExportedFunctions.Add(function);
}
}
/// <summary>
/// Gets the raw data for a specific section
/// </summary>
/// <param name="sectionIndex">Index of the section</param>
/// <returns>Byte array containing the section data</returns>
public byte[] GetSectionData(int sectionIndex)
{
if (sectionIndex < 0 || sectionIndex >= SectionHeaders.Count)
{
throw new ArgumentOutOfRangeException(nameof(sectionIndex));
}
SectionHeader section = SectionHeaders[sectionIndex];
byte[] sectionData = new byte[section.SizeOfRawData];
Array.Copy(_fileData, section.PointerToRawData, sectionData, 0, section.SizeOfRawData);
return sectionData;
}
/// <summary>
/// Gets the raw data for a section by name
/// </summary>
/// <param name="sectionName">Name of the section</param>
/// <returns>Byte array containing the section data</returns>
public byte[] GetSectionData(string sectionName)
{
for (int i = 0; i < SectionHeaders.Count; i++)
{
if (SectionHeaders[i].Name == sectionName)
{
return GetSectionData(i);
}
}
throw new ArgumentException($"Section '{sectionName}' not found");
}
/// <summary>
/// Checks if a section contains code
/// </summary>
/// <param name="section">The section to check</param>
/// <returns>True if the section contains code, false otherwise</returns>
public bool IsSectionContainsCode(SectionHeader section)
{
return (section.Characteristics & IMAGE_SCN_CNT_CODE) != 0 ||
(section.Characteristics & IMAGE_SCN_MEM_EXECUTE) != 0;
}
/// <summary>
/// Gets all code sections
/// </summary>
/// <returns>List of section indices that contain code</returns>
public List<int> GetCodeSections()
{
List<int> codeSections = new List<int>();
for (int i = 0; i < SectionHeaders.Count; i++)
{
if (IsSectionContainsCode(SectionHeaders[i]))
{
codeSections.Add(i);
}
}
return codeSections;
}
/// <summary>
/// Converts a Relative Virtual Address (RVA) to a file offset
/// </summary>
/// <param name="rva">The RVA to convert</param>
/// <returns>The corresponding file offset</returns>
public uint RvaToOffset(uint rva)
{
if (rva == 0)
{
return 0;
}
foreach (var section in SectionHeaders)
{
// Check if the RVA is within this section
if (rva >= section.VirtualAddress && rva < section.VirtualAddress + section.VirtualSize)
{
// Calculate the offset within the section
uint offsetInSection = rva - section.VirtualAddress;
// Make sure we don't exceed the raw data size
if (offsetInSection < section.SizeOfRawData)
{
return section.PointerToRawData + offsetInSection;
}
}
}
// If the RVA is not within any section, it might be in the headers
if (rva < OptionalHeader.SizeOfHeaders)
{
return rva;
}
throw new ArgumentException($"RVA {rva:X8} is not within any section");
}
}
#region PE Format Structures
/// <summary>
/// DOS Header structure
/// </summary>
public class DOSHeader
{
public ushort e_magic; // Magic number ("MZ")
public ushort e_cblp; // Bytes on last page of file
public ushort e_cp; // Pages in file
public ushort e_crlc; // Relocations
public ushort e_cparhdr; // Size of header in paragraphs
public ushort e_minalloc; // Minimum extra paragraphs needed
public ushort e_maxalloc; // Maximum extra paragraphs needed
public ushort e_ss; // Initial (relative) SS value
public ushort e_sp; // Initial SP value
public ushort e_csum; // Checksum
public ushort e_ip; // Initial IP value
public ushort e_cs; // Initial (relative) CS value
public ushort e_lfarlc; // File address of relocation table
public ushort e_ovno; // Overlay number
public ushort[] e_res; // Reserved words
public ushort e_oemid; // OEM identifier
public ushort e_oeminfo; // OEM information
public ushort[] e_res2; // Reserved words
public uint e_lfanew; // File address of new exe header
}
/// <summary>
/// File Header structure
/// </summary>
public class FileHeader
{
public ushort Machine; // Target machine type
public ushort NumberOfSections; // Number of sections
public uint TimeDateStamp; // Time stamp
public uint PointerToSymbolTable; // File offset of symbol table
public uint NumberOfSymbols; // Number of symbols
public ushort SizeOfOptionalHeader; // Size of optional header
public ushort Characteristics; // Characteristics
}
/// <summary>
/// Optional Header structure
/// </summary>
public class OptionalHeader
{
// Standard fields
public ushort Magic; // Magic number (PE32 or PE32+)
public byte MajorLinkerVersion; // Major linker version
public byte MinorLinkerVersion; // Minor linker version
public uint SizeOfCode; // Size of code section
public uint SizeOfInitializedData; // Size of initialized data
public uint SizeOfUninitializedData; // Size of uninitialized data
public uint AddressOfEntryPoint; // Entry point RVA
public uint BaseOfCode; // Base of code section
public uint BaseOfData; // Base of data section (PE32 only)
// Windows-specific fields
public dynamic ImageBase; // Preferred image base (uint for PE32, ulong for PE32+)
public uint SectionAlignment; // Section alignment
public uint FileAlignment; // File alignment
public ushort MajorOperatingSystemVersion; // Major OS version
public ushort MinorOperatingSystemVersion; // Minor OS version
public ushort MajorImageVersion; // Major image version
public ushort MinorImageVersion; // Minor image version
public ushort MajorSubsystemVersion; // Major subsystem version
public ushort MinorSubsystemVersion; // Minor subsystem version
public uint Win32VersionValue; // Win32 version value
public uint SizeOfImage; // Size of image
public uint SizeOfHeaders; // Size of headers
public uint CheckSum; // Checksum
public ushort Subsystem; // Subsystem
public ushort DllCharacteristics; // DLL characteristics
public dynamic SizeOfStackReserve; // Size of stack reserve (uint for PE32, ulong for PE32+)
public dynamic SizeOfStackCommit; // Size of stack commit (uint for PE32, ulong for PE32+)
public dynamic SizeOfHeapReserve; // Size of heap reserve (uint for PE32, ulong for PE32+)
public dynamic SizeOfHeapCommit; // Size of heap commit (uint for PE32, ulong for PE32+)
public uint LoaderFlags; // Loader flags
public uint NumberOfRvaAndSizes; // Number of data directories
// Data directories
public DataDirectory[] DataDirectories; // Data directories
}
/// <summary>
/// Data Directory structure
/// </summary>
public class DataDirectory
{
public uint VirtualAddress; // RVA of the directory
public uint Size; // Size of the directory
}
/// <summary>
/// Section Header structure
/// </summary>
public class SectionHeader
{
public string Name; // Section name
public uint VirtualSize; // Virtual size
public uint VirtualAddress; // Virtual address (RVA)
public uint SizeOfRawData; // Size of raw data
public uint PointerToRawData; // File pointer to raw data
public uint PointerToRelocations; // File pointer to relocations
public uint PointerToLinenumbers; // File pointer to line numbers
public ushort NumberOfRelocations; // Number of relocations
public ushort NumberOfLinenumbers; // Number of line numbers
public uint Characteristics; // Characteristics
}
#endregion
#region Export and Import Structures
/// <summary>
/// Export Directory structure
/// </summary>
public class ExportDirectory
{
public uint Characteristics;
public uint TimeDateStamp;
public ushort MajorVersion;
public ushort MinorVersion;
public uint Name; // RVA to the DLL name
public string DllName; // Actual DLL name
public uint Base; // Ordinal base
public uint NumberOfFunctions; // Number of exported functions
public uint NumberOfNames; // Number of exported names
public uint AddressOfFunctions; // RVA to function addresses
public uint AddressOfNames; // RVA to function names
public uint AddressOfNameOrdinals; // RVA to ordinals
}
/// <summary>
/// Represents an exported function
/// </summary>
public class ExportedFunction
{
public string Name; // Function name
public uint Address; // Function RVA
public ushort Ordinal; // Function ordinal
public bool IsForwarder; // True if this is a forwarder
public string ForwarderName; // Name of the forwarded function (if IsForwarder is true)
}
/// <summary>
/// Import Descriptor structure
/// </summary>
public class ImportDescriptor
{
public uint OriginalFirstThunk; // RVA to Import Lookup Table
public uint TimeDateStamp;
public uint ForwarderChain;
public uint Name; // RVA to the DLL name
public string DllName; // Actual DLL name
public uint FirstThunk; // RVA to Import Address Table
public List<ImportedFunction> Functions; // List of imported functions
public ImportDescriptor()
{
Functions = new List<ImportedFunction>();
}
}
/// <summary>
/// Represents an imported function
/// </summary>
public class ImportedFunction
{
public bool IsOrdinal; // True if imported by ordinal
public ushort Ordinal; // Ordinal value (if IsOrdinal is true)
public string Name; // Function name (if IsOrdinal is false)
public ushort Hint; // Hint value (if IsOrdinal is false)
public uint ThunkRVA; // RVA in the Import Address Table
}
#endregion
}

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using System;
using System.IO;
namespace X86Disassembler
{
internal class Program
{
// Path to the DLL file to disassemble
private const string DllPath = @"C:\Windows\SysWOW64\msvcrt.dll"; // Example path, replace with your target DLL
static void Main(string[] args)
{
Console.WriteLine("X86 Disassembler and Decompiler");
Console.WriteLine("--------------------------------");
Console.WriteLine($"Loading file: {DllPath}");
// Load the DLL file
byte[] binaryData = File.ReadAllBytes(DllPath);
Console.WriteLine($"Successfully loaded {DllPath}");
Console.WriteLine($"File size: {binaryData.Length} bytes");
// Parse the PE format
Console.WriteLine("\nParsing PE format...");
PEFormat peFile = new PEFormat(binaryData);
// Display basic PE information
DisplayPEInfo(peFile);
// Display exported functions
DisplayExportedFunctions(peFile);
// Display imported functions
DisplayImportedFunctions(peFile);
// Find code sections for disassembly
var codeSections = peFile.GetCodeSections();
Console.WriteLine($"\nFound {codeSections.Count} code section(s):");
foreach (int sectionIndex in codeSections)
{
var section = peFile.SectionHeaders[sectionIndex];
Console.WriteLine($" - {section.Name}: Size={section.SizeOfRawData} bytes, RVA=0x{section.VirtualAddress:X8}");
// Get the section data for disassembly
byte[] sectionData = peFile.GetSectionData(sectionIndex);
// TODO: Implement disassembling logic here
// This is where we would pass the section data to our disassembler
}
Console.WriteLine("\nPress any key to exit...");
Console.ReadKey();
}
private static void DisplayPEInfo(PEFormat peFile)
{
Console.WriteLine("\nPE File Information:");
Console.WriteLine($"Architecture: {(peFile.Is64Bit ? "64-bit" : "32-bit")}");
Console.WriteLine($"Entry Point: 0x{peFile.OptionalHeader.AddressOfEntryPoint:X8}");
Console.WriteLine($"Image Base: 0x{peFile.OptionalHeader.ImageBase:X}");
Console.WriteLine($"Number of Sections: {peFile.FileHeader.NumberOfSections}");
// Display section information
Console.WriteLine("\nSections:");
for (int i = 0; i < peFile.SectionHeaders.Count; i++)
{
var section = peFile.SectionHeaders[i];
string flags = "";
if ((section.Characteristics & 0x00000020) != 0) flags += "Code "; // IMAGE_SCN_CNT_CODE
if ((section.Characteristics & 0x20000000) != 0) flags += "Exec "; // IMAGE_SCN_MEM_EXECUTE
if ((section.Characteristics & 0x40000000) != 0) flags += "Read "; // IMAGE_SCN_MEM_READ
if ((section.Characteristics & 0x80000000) != 0) flags += "Write"; // IMAGE_SCN_MEM_WRITE
Console.WriteLine($" {i}: {section.Name,-8} VA=0x{section.VirtualAddress:X8} Size={section.SizeOfRawData,-8} [{flags}]");
}
}
private static void DisplayExportedFunctions(PEFormat peFile)
{
if (peFile.ExportDirectory == null)
{
Console.WriteLine("\nNo exported functions found.");
return;
}
Console.WriteLine("\nExported Functions:");
Console.WriteLine($"DLL Name: {peFile.ExportDirectory.DllName}");
Console.WriteLine($"Number of Functions: {peFile.ExportDirectory.NumberOfFunctions}");
Console.WriteLine($"Number of Names: {peFile.ExportDirectory.NumberOfNames}");
// Display the first 10 exported functions (if any)
int count = Math.Min(10, peFile.ExportedFunctions.Count);
for (int i = 0; i < count; i++)
{
var function = peFile.ExportedFunctions[i];
Console.WriteLine($" {i}: {function.Name} (Ordinal={function.Ordinal}, RVA=0x{function.Address:X8})");
}
if (peFile.ExportedFunctions.Count > 10)
{
Console.WriteLine($" ... and {peFile.ExportedFunctions.Count - 10} more");
}
}
private static void DisplayImportedFunctions(PEFormat peFile)
{
if (peFile.ImportDescriptors.Count == 0)
{
Console.WriteLine("\nNo imported functions found.");
return;
}
Console.WriteLine("\nImported Functions:");
Console.WriteLine($"Number of Imported DLLs: {peFile.ImportDescriptors.Count}");
// Display the first 5 imported DLLs and their functions
int dllCount = Math.Min(5, peFile.ImportDescriptors.Count);
for (int i = 0; i < dllCount; i++)
{
var descriptor = peFile.ImportDescriptors[i];
Console.WriteLine($" DLL: {descriptor.DllName}");
// Display the first 5 functions from this DLL
int funcCount = Math.Min(5, descriptor.Functions.Count);
for (int j = 0; j < funcCount; j++)
{
var function = descriptor.Functions[j];
if (function.IsOrdinal)
{
Console.WriteLine($" {j}: Ordinal {function.Ordinal}");
}
else
{
Console.WriteLine($" {j}: {function.Name} (Hint={function.Hint})");
}
}
if (descriptor.Functions.Count > 5)
{
Console.WriteLine($" ... and {descriptor.Functions.Count - 5} more");
}
}
if (peFile.ImportDescriptors.Count > 5)
{
Console.WriteLine($" ... and {peFile.ImportDescriptors.Count - 5} more DLLs");
}
}
}
}

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X86Disassembler/X86Disassembler.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>