finalshell如何查看密码

1、右键点击导出

2、打开导出的配置文件，搜索password，找到password的编码后的字符串复制

3、运行下面代码，即可查看原来的密码，把main()方法的字符串替换成上一步复制的字符串
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("替换成上面复制的字符串"));
}
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;
}
}
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版权声明：本文为CSDN博主「周杰伦_」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/ABCAA1024/article/details/128563145