本文整理自网络，侵删。
引用unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls, Mask,ComCtrls;
type
TForm1 = class(TForm)
Label1: TLabel;
Label2: TLabel;
Timer1: TTimer;
procedure Timer1Timer(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
var
NewData : array[0..1] of byte = ($00,$00);
Bytesread : DWORD;
procedure TForm1.Timer1Timer(Sender: TObject);
var
hwin, pid: DWORD;
hprocess: DWORD;
begin
hwin := FindWindow(nil,'外挂窗口');
if hwin = 0 then
Form1.Label1.Caption:='目标程序未运行'
else
Form1.Label1.Caption:='目标程序已运行';
GetWindowThreadProcessId(hwin, pid);
hprocess := OpenProcess(PROCESS_ALL_ACCESS, False, pid);
if WriteProcessMemory(hProcess ,Pointer($00410000),@newdata,1 ,BytesRead ) then
begin
CloseHandle(hProcess);
Form1.Label2.Caption:='目标程序解密成功 ';
end
else
begin
CloseHandle(hProcess);
Form1.Label2.Caption:='目标程序解密失败 ';
end;
end;
end.
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