Finalshell忘记密码找回

2023 年 04 月 22 日

220 次浏览

4257字数

1.进入Finalshell安装目录中的conn文件夹，比如

C:finalshell\conn

2.打开你忘记密码的服务器的json文件，复制里面的password

3.将下述代码中的Pn1vK14tShb4G7ByTjidNtT/EoQ8ic6f需要换成你的password值

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Base64;
import java.util.Random;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;

public class FinalShellDecodePass {
    public static void main(String[] args)throws Exception {
        System.out.println(decodePass("Pn1vK14tShb4G7ByTjidNtT/EoQ8ic6f"));
    }
    public static byte[] desDecode(byte[] data, byte[] head) throws Exception {
        SecureRandom sr = new SecureRandom();
        DESKeySpec dks = new DESKeySpec(head);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey securekey = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(2, securekey, sr);
        return cipher.doFinal(data);
    }
    public static String decodePass(String data) throws Exception {
        if (data == null) {
            return null;
        } else {
            String rs = "";
            byte[] buf = Base64.getDecoder().decode(data);
            byte[] head = new byte[8];
            System.arraycopy(buf, 0, head, 0, head.length);
            byte[] d = new byte[buf.length - head.length];
            System.arraycopy(buf, head.length, d, 0, d.length);
            byte[] bt = desDecode(d, ranDomKey(head));
            rs = new String(bt);

            return rs;
        }
    }
    static byte[] ranDomKey(byte[] head) {
        long ks = 3680984568597093857L / (long)(new Random((long)head[5])).nextInt(127);
        Random random = new Random(ks);
        int t = head[0];

        for(int i = 0; i < t; ++i) {
            random.nextLong();
        }

        long n = random.nextLong();
                Random r2 = new Random(n);
                long[] ld = new long[]{(long)head[4], r2.nextLong(), (long)head[7], (long)head[3], r2.nextLong(), (long)head[1], random.nextLong(), (long)head[2]};
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                DataOutputStream dos = new DataOutputStream(bos);
                long[] var15 = ld;
                int var14 = ld.length;
        
                for(int var13 = 0; var13 < var14; ++var13) {
                    long l = var15[var13];
        
                    try {
                        dos.writeLong(l);
                    } catch (IOException var18) {
                        var18.printStackTrace();
                    }
                }
        
                try {
                    dos.close();
                } catch (IOException var17) {
                    var17.printStackTrace();
                }
        
                byte[] keyData = bos.toByteArray();
                keyData = md5(keyData);
                return keyData;
            }
            public static byte[] md5(byte[] data) {
                String ret = null;
                byte[] res=null;
        
                try {
                    MessageDigest m;
                    m = MessageDigest.getInstance("MD5");
                    m.update(data, 0, data.length);
                    res=m.digest();
                    ret = new BigInteger(1, res).toString(16);
                } catch (NoSuchAlgorithmException e) {
                    e.printStackTrace();
                }
                return res;
            }
        }

4.https://c.runoob.com/compile/10/
粘贴，点击运行