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  • 从内存中加载并运行exe

    windows似乎只提供了一种启动进程的方法:即必须从一个可执行文件中加载并启动。
        而下面这段代码就是提供一种可以直接从内存中启动一个exe的变通办法。
        用途嘛,     也许可以用来保护你的exe,你可以对要保护的     exe     进行任意切分、加密、存储,
        只要运行时能将exe的内容正确拼接到一块内存中,就可以直接从内存中启动,而不必不安全地去
        生成一个临时文件再从临时文件启动进程。另外这段代码也提供了一种自己写exe外壳的简单途径,
        如果能配合其它各种外壳技术就更好地保护你的exe文件。

        原理很简单:就是“借尸还魂”,启动一个僵尸进程(NT下可以是自身程序启动的另一个进程),
        然后在它运行前将其整个替换成内存中的exe内容,待正式运行后执行的就是你的目标代码了。

        不过代码中还有一些不尽人意的地方,比如在98下运行会留一个僵尸程序的壳在硬盘上(
        其实那个僵尸程序本身就是一个完整的可执行程序,直接运行的话只显示一条错误信息然后就退出了)。
        另外由于客观条件限制,代码没有经过充分测试,只在XP下进行了一些初步测试:普通exe都能正常运行,
        upx压缩过的exe绝大多数情况下都能运行,只有在不能卸载僵尸外壳时才有问题(upx压缩过的exe没有重定向表,
        无法加载到其它地址运行)。

        如果有bug望告之,如果有更好的方法特别是能解决98下的遗留尾巴的话希望不吝赐教。

        {     *******************************************************     }   
        {     *                                     从内存中加载并运行exe                                 *     }   
        {     *******************************************************     }   
        {     *     参 数:                                                                                                   }   
        {     *     Buffer:     内存中的exe地 址                                                                 }   
        {     *     Len:     内存中exe占用长 度                                                                   }   
        {     *     CmdParam:     命令行参数(不包含exe文件名的剩余命令行参数)}   
        {     *     ProcessId:     返回的进程Id                                                                 }   
        {     *     返回值:     如果成功则返回进程的Handle(ProcessHandle),         }   
        {                           如果失败则返回INVALID_HANDLE_VALUE                         }   
        {     *******************************************************     }
      
    unit PEUnit;

    interface

    uses windows;

    function MemExecute(const ABuffer; Len: Integer; CmdParam: string; var ProcessId: Cardinal): Cardinal;

    implementation

    //{$R ExeShell.res}     // 外壳程序模板(98下使用)

    type
        TImageSectionHeaders = array [0..0] of TImageSectionHeader;
        PImageSectionHeaders = ^TImageSectionHeaders;

    { 计算对齐后的大小 }
    function GetAlignedSize(Origin, Alignment: Cardinal): Cardinal;
    begin
        result := (Origin + Alignment - 1) div Alignment * Alignment;
    end;

    { 计算加载pe并对齐需要占用多少内存,未直接使用OptionalHeader.SizeOfImage作为结果是因为据说有的编译器生成的exe这个值 会填0 }
    function CalcTotalImageSize(MzH: PImageDosHeader; FileLen: Cardinal; peH: PImageNtHeaders;
          peSecH: PImageSectionHeaders): Cardinal;
    var
        i: Integer;
    begin
        {计算pe头的大小}
        result := GetAlignedSize(PeH.OptionalHeader.SizeOfHeaders, PeH.OptionalHeader.SectionAlignment);

        {计算所有节的大小}
        for i := 0 to peH.FileHeader.NumberOfSections - 1 do
          if peSecH[i].PointerToRawData + peSecH[i].SizeOfRawData > FileLen then    // 超出文件范围
          begin
            result := 0;
            exit;
          end
          else if peSecH[i].VirtualAddress <> 0 then    //计算对齐后某节的大小
            if peSecH[i].Misc.VirtualSize <> 0 then
              result := GetAlignedSize(peSecH[i].VirtualAddress + peSecH[i].Misc.VirtualSize, PeH.OptionalHeader.SectionAlignment)
            else
              result := GetAlignedSize(peSecH[i].VirtualAddress + peSecH[i].SizeOfRawData, PeH.OptionalHeader.SectionAlignment)
          else if peSecH[i].Misc.VirtualSize < peSecH[i].SizeOfRawData then
            result := result + GetAlignedSize(peSecH[i].SizeOfRawData, peH.OptionalHeader.SectionAlignment)
          else
            result := result + GetAlignedSize(peSecH[i].Misc.VirtualSize, PeH.OptionalHeader.SectionAlignment);

    end;

    { 加载pe到内存并对齐所有节 }
    function AlignPEToMem(const Buf; Len: Integer; var PeH: PImageNtHeaders;
          var PeSecH: PImageSectionHeaders; var Mem: Pointer; var ImageSize: Cardinal): Boolean;
    var
        SrcMz: PImageDosHeader;              // DOS头
        SrcPeH: PImageNtHeaders;             // PE头
        SrcPeSecH: PImageSectionHeaders;     // 节表
        i: Integer;
        l: Cardinal;
        Pt: Pointer;
    begin
        result := false;
        SrcMz := @Buf;
        if Len < sizeof(TImageDosHeader) then exit;
        if SrcMz.e_magic <> IMAGE_DOS_SIGNATURE then exit;
        if Len < SrcMz._lfanew+Sizeof(TImageNtHeaders) then exit;
        SrcPeH := pointer(Integer(SrcMz)+SrcMz._lfanew);
        if (SrcPeH.Signature <> IMAGE_NT_SIGNATURE) then exit;
        if (SrcPeH.FileHeader.Characteristics and IMAGE_FILE_DLL <> 0) or
            (SrcPeH.FileHeader.Characteristics and IMAGE_FILE_EXECUTABLE_IMAGE = 0)
            or (SrcPeH.FileHeader.SizeOfOptionalHeader <> SizeOf(TImageOptionalHeader)) then exit;
        SrcPeSecH := Pointer(Integer(SrcPeH)+SizeOf(TImageNtHeaders));
        ImageSize := CalcTotalImageSize(SrcMz, Len, SrcPeH, SrcPeSecH);
        if ImageSize = 0 then
          exit;
        Mem := VirtualAlloc(nil, ImageSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);    // 分配内存
        if Mem <> nil then
        begin
          // 计算需要复制的PE头字节数
          l := SrcPeH.OptionalHeader.SizeOfHeaders;
          for i := 0 to SrcPeH.FileHeader.NumberOfSections - 1 do
            if (SrcPeSecH[i].PointerToRawData <> 0) and (SrcPeSecH[i].PointerToRawData < l) then
              l := SrcPeSecH[i].PointerToRawData;
          Move(SrcMz^, Mem^, l);
          PeH := Pointer(Integer(Mem) + PImageDosHeader(Mem)._lfanew);
          PeSecH := Pointer(Integer(PeH) + sizeof(TImageNtHeaders));

          Pt := Pointer(Cardinal(Mem) + GetAlignedSize(PeH.OptionalHeader.SizeOfHeaders, PeH.OptionalHeader.SectionAlignment));
          for i := 0 to PeH.FileHeader.NumberOfSections - 1 do
          begin
            // 定位该节在内存中的位置
            if PeSecH[i].VirtualAddress <> 0 then
              Pt := Pointer(Cardinal(Mem) + PeSecH[i].VirtualAddress);

            if PeSecH[i].SizeOfRawData <> 0 then
            begin
              // 复制数据到内存
              Move(Pointer(Cardinal(SrcMz) + PeSecH[i].PointerToRawData)^, pt^, PeSecH[i].SizeOfRawData);
              if peSecH[i].Misc.VirtualSize < peSecH[i].SizeOfRawData then
                pt := pointer(Cardinal(pt) + GetAlignedSize(PeSecH[i].SizeOfRawData, PeH.OptionalHeader.SectionAlignment))
              else
                pt := pointer(Cardinal(pt) + GetAlignedSize(peSecH[i].Misc.VirtualSize, peH.OptionalHeader.SectionAlignment));
              // pt 定位到下一节开始位置
            end
            else
              pt := pointer(Cardinal(pt) + GetAlignedSize(PeSecH[i].Misc.VirtualSize, PeH.OptionalHeader.SectionAlignment));
          end;
          result := True;
        end;
    end;

    type
        TVirtualAllocEx = function (hProcess: THandle; lpAddress: Pointer;
                                        dwSize, flAllocationType: DWORD; flProtect: DWORD): Pointer; stdcall;

    var
        MyVirtualAllocEx: TVirtualAllocEx = nil;

    function IsNT: Boolean;
    begin
        result := Assigned(MyVirtualAllocEx);
    end;

    { 生成外壳程序命令行 }
    function PrepareShellExe(CmdParam: string; BaseAddr, ImageSize: Cardinal): string;
    var
        r, h, sz: Cardinal;
        p: Pointer;
        fid, l: Integer;
        buf: Pointer;
        peH: PImageNtHeaders;
        peSecH: PImageSectionHeaders;
    begin
        if IsNT then
        { NT 系统下直接使用自身程序作为外壳进程 }
          result := ParamStr(0) + CmdParam
        else begin
        // 由于98系统下无法重新分配外壳进程占用内存,所以必须保证运行的外壳程序能容纳目标进程并且加载地址一致
        // 此处使用的方法是从资源中释放出一个事先建立好的外壳程序,然后通过修改其PE头使其运行时能加载到指定地址并至少能容纳目标进程
          r := FindResource(HInstance, 'SHELL_EXE', RT_RCDATA);
          h := LoadResource(HInstance, r);
          p := LockResource(h);
          l := SizeOfResource(HInstance, r);
          GetMem(Buf, l);
          Move(p^, Buf^, l);     // 读到内存
          FreeResource(h);
          peH := Pointer(Integer(Buf) + PImageDosHeader(Buf)._lfanew);
          peSecH := Pointer(Integer(peH) + sizeof(TImageNtHeaders));
          peH.OptionalHeader.ImageBase := BaseAddr;      // 修改PE头重的加载基址
          if peH.OptionalHeader.SizeOfImage < ImageSize then    // 目标比外壳大,修改外壳程序运行时占用的内存
          begin
            sz := Imagesize - peH.OptionalHeader.SizeOfImage;
            Inc(peH.OptionalHeader.SizeOfImage, sz);      // 调整总占用内存数
            Inc(peSecH[peH.FileHeader.NumberOfSections-1].Misc.VirtualSize, sz);     // 调整最后一节占用内存数
          end;

          // 生成外壳程序文件名, 为本程序改后缀名得到的
          // 由于不想 uses SysUtils (一旦 use 了程序将增大80K左右), 而且偷懒,所以只支持最多运行11个进程,后缀名为.dat, .da0~.da9
          result := ParamStr(0);
          result := copy(result, 1, length(result) - 4) + '.dat';
          r := 0;
          while r < 10 do
          begin
            fid := CreateFile(pchar(result), GENERIC_READ or GENERIC_WRITE, 0, nil, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
            if fid < 0 then
            begin
              result := copy(result, 1, length(result)-3)+'da'+Char(r+Byte('0'));
              inc(r);
            end
            else begin
              //SetFilePointer(fid, Imagesize, nil, 0);
              //SetEndOfFile(fid);
              //SetFilePointer(fid, 0, nil, 0);
              WriteFile(fid, Buf^, l, h, nil);    // 写入文件
              CloseHandle(fid);
              break;
            end;
          end;
          result := result + CmdParam;    // 生成命令行
          FreeMem(Buf);
        end;
    end;

    { 是否包含可重定向列表 }
    function HasRelocationTable(peH: PImageNtHeaders): Boolean;
    begin
        result := (peH.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress <> 0)
            and (peH.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].Size <> 0);
    end;

    type
        PImageBaseRelocation= ^TImageBaseRelocation;
        TImageBaseRelocation = packed record
          VirtualAddress: cardinal;
          SizeOfBlock: cardinal;
        end;

    { 重定向PE用到的地址 }
    procedure DoRelocation(peH: PImageNtHeaders; OldBase, NewBase: Pointer);
    var
        Delta: Cardinal;
        p: PImageBaseRelocation;
        pw: PWord;
        i: Integer;
    begin
        Delta := Cardinal(NewBase) - peH.OptionalHeader.ImageBase;
        p := pointer(cardinal(OldBase) + peH.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress);
        while (p.VirtualAddress + p.SizeOfBlock <> 0) do
        begin
          pw := pointer(Integer(p) + Sizeof(p^));
          for i := 1 to (p.SizeOfBlock - Sizeof(p^)) div 2 do
          begin
            if pw^ and $F000 = $3000 then
              Inc(PCardinal(Cardinal(OldBase) + p.VirtualAddress + (pw^ and $0FFF))^, Delta);
            inc(pw);
          end;
          p := Pointer(pw);
        end;
    end;

    type
        TZwUnmapViewOfSection = function (Handle, BaseAdr: Cardinal): Cardinal; stdcall;

    { 卸载原外壳占用内存 }
    function UnloadShell(ProcHnd, BaseAddr: Cardinal): Boolean;
    var
        M: HModule;
        ZwUnmapViewOfSection: TZwUnmapViewOfSection;
    begin
        result := False;
        m := LoadLibrary('ntdll.dll');
        if m <> 0 then
        begin
          ZwUnmapViewOfSection := GetProcAddress(m, 'ZwUnmapViewOfSection');
          if assigned(ZwUnmapViewOfSection) then
            result := (ZwUnmapViewOfSection(ProcHnd, BaseAddr) = 0);
          FreeLibrary(m);
        end;
    end;

    { 创建外壳进程并获取其基址、大小和当前运行状态 }
    function CreateChild(Cmd: string; var Ctx: TContext; var ProcHnd, ThrdHnd, ProcId, BaseAddr, ImageSize: Cardinal): Boolean;
    var
        si: TStartUpInfo;
        pi: TProcessInformation;
        Old: Cardinal;
        MemInfo: TMemoryBasicInformation;
        p: Pointer;
    begin
        FillChar(si, Sizeof(si), 0);
        FillChar(pi, SizeOf(pi), 0);
        si.cb := sizeof(si);
        result := CreateProcess(nil, PChar(Cmd), nil, nil, False, CREATE_SUSPENDED, nil, nil, si, pi);    // 以挂起方式运行进程
        if result then
        begin
          ProcHnd := pi.hProcess;
          ThrdHnd := pi.hThread;
          ProcId := pi.dwProcessId;

          { 获取外壳进程运行状态,[ctx.Ebx+8]内存处存的是外壳进程的加载基址,ctx.Eax存放有外壳进程的入口地址 }
          ctx.ContextFlags := CONTEXT_FULL;
          GetThreadContext(ThrdHnd, ctx);
          ReadProcessMemory(ProcHnd, Pointer(ctx.Ebx+8), @BaseAddr, SizeOf(Cardinal), Old);    // 读取加载基址
          p := Pointer(BaseAddr);

          { 计算外壳进程占有的内存 }
          while VirtualQueryEx(ProcHnd, p, MemInfo, Sizeof(MemInfo)) <> 0 do
          begin
            if MemInfo.State = MEM_FREE then
              break;
            p := Pointer(Cardinal(p) + MemInfo.RegionSize);
          end;
          ImageSize := Cardinal(p) - Cardinal(BaseAddr);
        end;
    end;

    { 创建外壳进程并用目标进程替换它然后执行 }
    function AttachPE(CmdParam: string; peH: PImageNtHeaders; peSecH: PImageSectionHeaders;
          Ptr: Pointer; ImageSize: Cardinal; var ProcId: Cardinal): Cardinal;
    var
        s: string;
        Addr, Size: Cardinal;
        ctx: TContext;
        Old: Cardinal;
        p: Pointer;
        Thrd: Cardinal;
    begin
        result := INVALID_HANDLE_VALUE;
        s := PrepareShellExe(CmdParam, peH.OptionalHeader.ImageBase, ImageSize);
        if CreateChild(s, ctx, result, Thrd, ProcId, Addr, Size) then
        begin
          p := nil;
          if (peH.OptionalHeader.ImageBase = Addr) and (Size >= ImageSize) then    // 外壳进程可以容纳目标进程并且加载地址一致
          begin
            p := Pointer(Addr);
            VirtualProtectEx(result, p, Size, PAGE_EXECUTE_READWRITE, Old);
          end
          else if IsNT then    // 98 下失败
          begin
            if UnloadShell(result, Addr) then    // 卸载外壳进程占有内存
              // 重新按目标进程加载基址和大小分配内存
              p := MyVirtualAllocEx(Result, Pointer(peH.OptionalHeader.ImageBase), ImageSize, MEM_RESERVE or MEM_COMMIT, PAGE_EXECUTE_READWRITE);
            if (p = nil) and hasRelocationTable(peH) then    // 分配内存失败并且目标进程支持重定向
            begin
              // 按任意基址分配内存
              p := MyVirtualAllocEx(result, nil, ImageSize, MEM_RESERVE or MEM_COMMIT, PAGE_EXECUTE_READWRITE);
              if p <> nil then
                DoRelocation(peH, Ptr, p);    // 重定向
            end;
          end;
          if p <> nil then
          begin
            WriteProcessMemory(Result, Pointer(ctx.Ebx+8), @p, Sizeof(DWORD), Old);    // 重置目标进程运行环境中的基址
            peH.OptionalHeader.ImageBase := Cardinal(p);
            if WriteProcessMemory(Result, p, Ptr, ImageSize, Old) then    // 复制PE数据到目标进程
            begin
              ctx.ContextFlags := CONTEXT_FULL;
              if Cardinal(p) = Addr then
                ctx.Eax := peH.OptionalHeader.ImageBase + peH.OptionalHeader.AddressOfEntryPoint    // 重置运行环境中的入口地址
              else
                ctx.Eax := Cardinal(p) + peH.OptionalHeader.AddressOfEntryPoint;
              SetThreadContext(Thrd, ctx);    // 更新运行环境
              ResumeThread(Thrd);             // 执行
              CloseHandle(Thrd);
            end
            else begin    // 加载失败,杀掉外壳进程
              TerminateProcess(Result, 0);
              CloseHandle(Thrd);
              CloseHandle(Result);
              Result := INVALID_HANDLE_VALUE;
            end;
          end
          else begin // 加载失败,杀掉外壳进程
            TerminateProcess(Result, 0);
            CloseHandle(Thrd);
            CloseHandle(Result);
            Result := INVALID_HANDLE_VALUE;
          end;
        end;
    end;

    function MemExecute(const ABuffer; Len: Integer; CmdParam: string; var ProcessId: Cardinal): Cardinal;
    var
        peH: PImageNtHeaders;
        peSecH: PImageSectionHeaders;
        Ptr: Pointer;
        peSz: Cardinal;
    begin
        result := INVALID_HANDLE_VALUE;
        if alignPEToMem(ABuffer, Len, peH, peSecH, Ptr, peSz) then 
        begin
          result := AttachPE(CmdParam, peH, peSecH, Ptr, peSz, ProcessId);
          VirtualFree(Ptr, peSz, MEM_DECOMMIT);
          //VirtualFree(Ptr, 0, MEM_RELEASE);
        end;
    end; 



    initialization
        MyVirtualAllocEx := GetProcAddress(GetModuleHandle('Kernel32.dll'), 'VirtualAllocEx');

    end.


    {
    写了一个简单程序测试通过:)
    }
    program Test;

    //{$APPTYPE CONSOLE}

    uses
          SysUtils,
          Classes,
          PEUnit in 'PEUnit.pas';
    var
          ABuffer: array of byte;
          Stream: TFileStream;
          ProcessId: Cardinal;
    begin
          Stream := TFileStream.Create('HT.exe', fmOpenRead);
          try
              SetLength(ABuffer, Stream.Size);
              Stream.ReadBuffer(ABuffer[0], Stream.Size);
              MemExecute(ABuffer[0], Stream.Size, '', ProcessId);
          finally
              Stream.Free;
          end;
    end.

     

     

     

     

     

     

     

     

     

     


     

    {
       EXE Memory Unit Two For NT,2K,XP,2K3,LH By Anskya
       Email:Anskya@Gmail.com
       Web:Www.Anskya.Net 
       Date:04.08.2005
       Thank:Aphex
      
       procedure MemoryRunExe(FileMemory: Pointer);
       [
         This program creates undetected executables that only run
         on Windows NT, 2000, XP, 2003 and LongHorn.   ??
       ]
    }
    Unit MemoryRunUnitTwo;

    interface

    {$IMAGEBASE $10000000}

    uses
       Windows;

    type
       TSections = array [0..0] of TImageSectionHeader;

    procedure MemoryRunExe(FileMemory: Pointer);

    implementation

    function GetAlignedSize(Size: dword; Alignment: dword): dword;
    begin
       if ((Size mod Alignment) = 0) then
       begin
         Result := Size;
       end
       else
       begin
         Result := ((Size div Alignment) + 1) * Alignment;
       end;
    end;

    function ImageSize(Image: pointer): dword;
    var
       Alignment: dword;
       ImageNtHeaders: PImageNtHeaders;
       PSections: ^TSections;
       SectionLoop: dword;
    begin
       ImageNtHeaders := pointer(dword(dword(Image)) + dword(PImageDosHeader(Image)._lfanew));
       Alignment := ImageNtHeaders.OptionalHeader.SectionAlignment;
       if ((ImageNtHeaders.OptionalHeader.SizeOfHeaders mod Alignment) = 0) then
       begin
         Result := ImageNtHeaders.OptionalHeader.SizeOfHeaders;
       end
       else
       begin
         Result := ((ImageNtHeaders.OptionalHeader.SizeOfHeaders div Alignment) + 1) * Alignment;
       end;
       PSections := pointer(pchar(@(ImageNtHeaders.OptionalHeader)) + ImageNtHeaders.FileHeader.SizeOfOptionalHeader);
       for SectionLoop := 0 to ImageNtHeaders.FileHeader.NumberOfSections - 1 do
       begin
         if PSections[SectionLoop].Misc.VirtualSize <> 0 then
         begin
           if ((PSections[SectionLoop].Misc.VirtualSize mod Alignment) = 0) then
           begin
             Result := Result + PSections[SectionLoop].Misc.VirtualSize;
           end
           else
           begin
             Result := Result + (((PSections[SectionLoop].Misc.VirtualSize div Alignment) + 1) * Alignment);
           end;
         end;
       end;
    end;

    procedure MemoryRunExe(FileMemory: Pointer);
    var
       BaseAddress, Bytes, HeaderSize, InjectSize,   SectionLoop, SectionSize: dword;
       Context: TContext;
       FileData: pointer;
       ImageNtHeaders: PImageNtHeaders;
       InjectMemory: pointer;
       ProcInfo: TProcessInformation;
       PSections: ^TSections;
       StartInfo: TStartupInfo;
    begin
       ImageNtHeaders := pointer(dword(dword(FileMemory)) + dword(PImageDosHeader(FileMemory)._lfanew));
       InjectSize := ImageSize(FileMemory);
       GetMem(InjectMemory, InjectSize);
       try
         FileData := InjectMemory;
         HeaderSize := ImageNtHeaders.OptionalHeader.SizeOfHeaders;
         PSections := pointer(pchar(@(ImageNtHeaders.OptionalHeader)) + ImageNtHeaders.FileHeader.SizeOfOptionalHeader);
         for SectionLoop := 0 to ImageNtHeaders.FileHeader.NumberOfSections - 1 do
         begin
           if PSections[SectionLoop].PointerToRawData < HeaderSize then HeaderSize := PSections[SectionLoop].PointerToRawData;
         end;
         CopyMemory(FileData, FileMemory, HeaderSize);
         FileData := pointer(dword(FileData) + GetAlignedSize(ImageNtHeaders.OptionalHeader.SizeOfHeaders, ImageNtHeaders.OptionalHeader.SectionAlignment));
         for SectionLoop := 0 to ImageNtHeaders.FileHeader.NumberOfSections - 1 do
         begin
           if PSections[SectionLoop].SizeOfRawData > 0 then
           begin
             SectionSize := PSections[SectionLoop].SizeOfRawData;
             if SectionSize > PSections[SectionLoop].Misc.VirtualSize then SectionSize := PSections[SectionLoop].Misc.VirtualSize;
             CopyMemory(FileData, pointer(dword(FileMemory) + PSections[SectionLoop].PointerToRawData), SectionSize);
             FileData := pointer(dword(FileData) + GetAlignedSize(PSections[SectionLoop].Misc.VirtualSize, ImageNtHeaders.OptionalHeader.SectionAlignment));
           end
           else
           begin
             if PSections[SectionLoop].Misc.VirtualSize <> 0 then FileData := pointer(dword(FileData) + GetAlignedSize(PSections[SectionLoop].Misc.VirtualSize, ImageNtHeaders.OptionalHeader.SectionAlignment));
           end;
         end;
         ZeroMemory(@StartInfo, SizeOf(StartupInfo));
         ZeroMemory(@Context, SizeOf(TContext));
         CreateProcess(nil, pchar(ParamStr(0)), nil, nil, False, CREATE_SUSPENDED, nil, nil, StartInfo, ProcInfo);
         Context.ContextFlags := CONTEXT_FULL;
         GetThreadContext(ProcInfo.hThread, Context);
         ReadProcessMemory(ProcInfo.hProcess, pointer(Context.Ebx + 8), @BaseAddress, 4, Bytes);
         VirtualAllocEx(ProcInfo.hProcess, pointer(ImageNtHeaders.OptionalHeader.ImageBase), InjectSize, MEM_RESERVE or MEM_COMMIT, PAGE_EXECUTE_READWRITE);
         WriteProcessMemory(ProcInfo.hProcess, pointer(ImageNtHeaders.OptionalHeader.ImageBase), InjectMemory, InjectSize, Bytes);
         WriteProcessMemory(ProcInfo.hProcess, pointer(Context.Ebx + 8), @ImageNtHeaders.OptionalHeader.ImageBase, 4, Bytes);
         Context.Eax := ImageNtHeaders.OptionalHeader.ImageBase + ImageNtHeaders.OptionalHeader.AddressOfEntryPoint;
         SetThreadContext(ProcInfo.hThread, Context);
         ResumeThread(ProcInfo.hThread);
       finally
         FreeMemory(InjectMemory);
       end;
    end;

    end.

    {
    写了一个简单程序测试通过:)
    }
    program Test1;

    //{$APPTYPE CONSOLE}

    uses
       SysUtils,
       Classes,
       MemoryRunUnitTwo in 'MemoryRunUnitTwo.pas';

    var
         ABuffer: array of byte;
         Stream: TFileStream;
         ProcessId: Cardinal;
    begin
         Stream := TFileStream.Create('HT.exe', fmOpenRead);
         try
             SetLength(ABuffer, Stream.Size);
             Stream.ReadBuffer(ABuffer[0], Stream.Size);
             MemoryRunExe(@ABuffer[0]);
         finally
             Stream.Free;
         end;
    end.

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  • 原文地址:https://www.cnblogs.com/ljl_falcon/p/2405969.html
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