安卓反编译算法请教

欣汝 · 发表于 2019-9-28 04:39:52

log_key = c.b(v3.toString().getBytes())，代码的意思是key=C加密算法，需要传入参数V3，toString，getBytes的意思吗

QQ截图20190928044250.png

双击log_key函数跳转到我要提交的post地方，是要在上面那段代码把加密的算法得出来吗

C算法进去看到的JS代码

package com.meelive.ingkee.base.utils.e;
import java.io.IOException;
import java.io.InputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class c {
private static final int a = 1024;
public c () {
super ();
}
public static MessageDigest a () {
return c.a ("MD5");
}
public static MessageDigest a (String arg1) {
try {
return MessageDigest.getInstance (arg1);
}
catch (NoSuchAlgorithmException v1) {
throw new IllegalArgumentException ( ( (Throwable)v1));
}
}
public static MessageDigest a (MessageDigest arg5, InputStream arg6) throws IOException {
int v0 = 1024;
byte[] v1 = new byte[v0];
int v3;
for (v3 = arg6.read (v1, 0, v0); v3 > -1; v3 = arg6.read (v1, 0, v0)) {
arg5.update (v1, 0, v3);
}
return arg5;
}
public static MessageDigest a (MessageDigest arg0, String arg1) {
arg0.update (f.a (arg1));
return arg0;
}
public static MessageDigest a (MessageDigest arg0, byte[] arg1) {
arg0.update (arg1);
return arg0;
}
public static byte[] a (InputStream arg1) throws IOException {
return c.b (c.a (), arg1);
}
public static byte[] a (byte[] arg1) {
return c.a ().digest (arg1);
}
public static String b (byte[] arg0) {
return d.a (c.a (arg0));
}
private static byte[] b (MessageDigest arg0, InputStream arg1) throws IOException {
return c.a (arg0, arg1).digest ();
}
public static String b (InputStream arg0) throws IOException {
return d.a (c.a (arg0));
}
public static MessageDigest b () {
return c.a ("SHA-1");
}
public static byte[] b (String arg0) {
return c.a (f.a (arg0));
}
public static String c (String arg0) {
return d.a (c.b (arg0));
}
public static MessageDigest c () {
return c.a ("SHA-256");
}
@Deprecated public static byte[] c (InputStream arg0) throws IOException {
return c.d (arg0);
}
@Deprecated public static byte[] c (byte[] arg0) {
return c.d (arg0);
}
public static byte[] d (InputStream arg1) throws IOException {
return c.b (c.b (), arg1);
}
public static byte[] d (byte[] arg1) {
return c.b ().digest (arg1);
}
public static MessageDigest d () {
return c.a ("SHA-384");
}
@Deprecated public static byte[] d (String arg0) {
return c.e (arg0);
}
public static byte[] e (String arg0) {
return c.d (f.a (arg0));
}
public static String e (InputStream arg0) throws IOException {
return d.a (c.d (arg0));
}
public static String e (byte[] arg0) {
return d.a (c.d (arg0));
}
public static MessageDigest e () {
return c.a ("SHA-512");
}
public static String f (String arg0) {
return d.a (c.e (arg0));
}
public static byte[] f (InputStream arg1) throws IOException {
return c.b (c.c (), arg1);
}
public static byte[] f (byte[] arg1) {
return c.c ().digest (arg1);
}
public static String g (InputStream arg0) throws IOException {
return d.a (c.f (arg0));
}
public static String g (byte[] arg0) {
return d.a (c.f (arg0));
}
public static byte[] g (String arg0) {
return c.f (f.a (arg0));
}
public static String h (String arg0) {
return d.a (c.g (arg0));
}
public static byte[] h (InputStream arg1) throws IOException {
return c.b (c.d (), arg1);
}
public static byte[] h (byte[] arg1) {
return c.d ().digest (arg1);
}
public static String i (InputStream arg0) throws IOException {
return d.a (c.h (arg0));
}
public static String i (byte[] arg0) {
return d.a (c.h (arg0));
}
public static byte[] i (String arg0) {
return c.h (f.a (arg0));
}
public static String j (String arg0) {
return d.a (c.i (arg0));
}
public static byte[] j (InputStream arg1) throws IOException {
return c.b (c.e (), arg1);
}
public static byte[] j (byte[] arg1) {
return c.e ().digest (arg1);
}
public static String k (InputStream arg0) throws IOException {
return d.a (c.j (arg0));
}
public static String k (byte[] arg0) {
return d.a (c.j (arg0));
}
public static byte[] k (String arg0) {
return c.j (f.a (arg0));
}
@Deprecated public static String l (InputStream arg0) throws IOException {
return c.e (arg0);
}
public static String l (String arg0) {
return d.a (c.k (arg0));
}
@Deprecated public static String l (byte[] arg0) {
return c.e (arg0);
}
@Deprecated public static String m (String arg0) {
return c.f (arg0);
}
}

package com.meelive.ingkee.base.utils.e;<br />
<br />
import java.io.IOException;<br />
import java.io.InputStream;<br />
import java.security.MessageDigest;<br />
import java.security.NoSuchAlgorithmException;<br />
<br />
public class c {<br />
    private static final int a = 1024;<br />
<br />
    public c() {<br />
        super();<br />
    }<br />
<br />
    public static MessageDigest a() {<br />
        return c.a("MD5");<br />
    }<br />
<br />
    public static MessageDigest a(String arg1) {<br />
        try {<br />
            return MessageDigest.getInstance(arg1);<br />
        }<br />
        catch(NoSuchAlgorithmException v1) {<br />
            throw new IllegalArgumentException(((Throwable)v1));<br />
        }<br />
    }<br />
<br />
    public static MessageDigest a(MessageDigest arg5, InputStream arg6) throws IOException {<br />
        int v0 = 1024;<br />
        byte[] v1 = new byte[v0];<br />
        int v3;<br />
        for(v3 = arg6.read(v1, 0, v0); v3 > -1; v3 = arg6.read(v1, 0, v0)) {<br />
            arg5.update(v1, 0, v3);<br />
        }<br />
<br />
        return arg5;<br />
    }<br />
<br />
    public static MessageDigest a(MessageDigest arg0, String arg1) {<br />
        arg0.update(f.a(arg1));<br />
        return arg0;<br />
    }<br />
<br />
    public static MessageDigest a(MessageDigest arg0, byte[] arg1) {<br />
        arg0.update(arg1);<br />
        return arg0;<br />
    }<br />
<br />
    public static byte[] a(InputStream arg1) throws IOException {<br />
        return c.b(c.a(), arg1);<br />
    }<br />
<br />
    public static byte[] a(byte[] arg1) {<br />
        return c.a().digest(arg1);<br />
    }<br />
<br />
    public static String b(byte[] arg0) {<br />
        return d.a(c.a(arg0));<br />
    }<br />
<br />
    private static byte[] b(MessageDigest arg0, InputStream arg1) throws IOException {<br />
        return c.a(arg0, arg1).digest();<br />
    }<br />
<br />
    public static String b(InputStream arg0) throws IOException {<br />
        return d.a(c.a(arg0));<br />
    }<br />
<br />
    public static MessageDigest b() {<br />
        return c.a("SHA-1");<br />
    }<br />
<br />
    public static byte[] b(String arg0) {<br />
        return c.a(f.a(arg0));<br />
    }<br />
<br />
    public static String c(String arg0) {<br />
        return d.a(c.b(arg0));<br />
    }<br />
<br />
    public static MessageDigest c() {<br />
        return c.a("SHA-256");<br />
    }<br />
<br />
    @Deprecated public static byte[] c(InputStream arg0) throws IOException {<br />
        return c.d(arg0);<br />
    }<br />
<br />
    @Deprecated public static byte[] c(byte[] arg0) {<br />
        return c.d(arg0);<br />
    }<br />
<br />
    public static byte[] d(InputStream arg1) throws IOException {<br />
        return c.b(c.b(), arg1);<br />
    }<br />
<br />
    public static byte[] d(byte[] arg1) {<br />
        return c.b().digest(arg1);<br />
    }<br />
<br />
    public static MessageDigest d() {<br />
        return c.a("SHA-384");<br />
    }<br />
<br />
    @Deprecated public static byte[] d(String arg0) {<br />
        return c.e(arg0);<br />
    }<br />
<br />
    public static byte[] e(String arg0) {<br />
        return c.d(f.a(arg0));<br />
    }<br />
<br />
    public static String e(InputStream arg0) throws IOException {<br />
        return d.a(c.d(arg0));<br />
    }<br />
<br />
    public static String e(byte[] arg0) {<br />
        return d.a(c.d(arg0));<br />
    }<br />
<br />
    public static MessageDigest e() {<br />
        return c.a("SHA-512");<br />
    }<br />
<br />
    public static String f(String arg0) {<br />
        return d.a(c.e(arg0));<br />
    }<br />
<br />
    public static byte[] f(InputStream arg1) throws IOException {<br />
        return c.b(c.c(), arg1);<br />
    }<br />
<br />
    public static byte[] f(byte[] arg1) {<br />
        return c.c().digest(arg1);<br />
    }<br />
<br />
    public static String g(InputStream arg0) throws IOException {<br />
        return d.a(c.f(arg0));<br />
    }<br />
<br />
    public static String g(byte[] arg0) {<br />
        return d.a(c.f(arg0));<br />
    }<br />
<br />
    public static byte[] g(String arg0) {<br />
        return c.f(f.a(arg0));<br />
    }<br />
<br />
    public static String h(String arg0) {<br />
        return d.a(c.g(arg0));<br />
    }<br />
<br />
    public static byte[] h(InputStream arg1) throws IOException {<br />
        return c.b(c.d(), arg1);<br />
    }<br />
<br />
    public static byte[] h(byte[] arg1) {<br />
        return c.d().digest(arg1);<br />
    }<br />
<br />
    public static String i(InputStream arg0) throws IOException {<br />
        return d.a(c.h(arg0));<br />
    }<br />
<br />
    public static String i(byte[] arg0) {<br />
        return d.a(c.h(arg0));<br />
    }<br />
<br />
    public static byte[] i(String arg0) {<br />
        return c.h(f.a(arg0));<br />
    }<br />
<br />
    public static String j(String arg0) {<br />
        return d.a(c.i(arg0));<br />
    }<br />
<br />
    public static byte[] j(InputStream arg1) throws IOException {<br />
        return c.b(c.e(), arg1);<br />
    }<br />
<br />
    public static byte[] j(byte[] arg1) {<br />
        return c.e().digest(arg1);<br />
    }<br />
<br />
    public static String k(InputStream arg0) throws IOException {<br />
        return d.a(c.j(arg0));<br />
    }<br />
<br />
    public static String k(byte[] arg0) {<br />
        return d.a(c.j(arg0));<br />
    }<br />
<br />
    public static byte[] k(String arg0) {<br />
        return c.j(f.a(arg0));<br />
    }<br />
<br />
    @Deprecated public static String l(InputStream arg0) throws IOException {<br />
        return c.e(arg0);<br />
    }<br />
<br />
    public static String l(String arg0) {<br />
        return d.a(c.k(arg0));<br />
    }<br />
<br />
    @Deprecated public static String l(byte[] arg0) {<br />
        return c.e(arg0);<br />
    }<br />
<br />
    @Deprecated public static String m(String arg0) {<br />
        return c.f(arg0);<br />
    }<br />
}

分析的正确吗，还是错的

易行 · 发表于 2019-9-28 04:39:53

md5(md5(39583221556337135percent=unkown/total)+"avaliable=all-used"+getUid()+"9")

getUid()要用具体的值

欣汝 · 发表于 2019-9-28 05:33:22

arg2=topic_id
arg4=peer_id

      StringBuilder v5 = new StringBuilder();
      v5.append(String.valueOf(arg4));
      v5.append(String.valueOf(arg2));
      v5.append("percent=unkown/total");
      String v2 = c.b(v5.toString().getBytes());
      StringBuilder v3 = new StringBuilder();
      v3.append(v2);
      v3.append("avaliable=all-used");
      v3.append(String.valueOf(QueenUserManager.getInstance().getUid()));
      AtomManager.getInstance().getClass();
      v3.append(String.valueOf(9));
      v0.log_key = c.b(v3.toString().getBytes());

看着是把这两个参数传入，加密一次，然后赋值给V3，log_key再加密一次吗

易行 · 发表于 2019-9-28 07:47:52

看代码上的应该是的，自己把参数组合加密测试一下就知道了

欣汝 · 发表于 2019-9-28 07:51:56

易行发表于 2019-9-28 07:47
看代码上的应该是的，自己把参数组合加密测试一下就知道了

他的加密代码看不懂

易行 · 发表于 2019-9-28 07:53:35

欣汝发表于 2019-9-28 07:51
他的加密代码看不懂

看起来就是MD5加密而已，把参数组合好就行

欣汝 · 发表于 2019-9-28 07:55:13

易行发表于 2019-9-28 07:53
看起来就是MD5加密而已，把参数组合好就行

jeb怎么连接模拟器下断点

易行 · 发表于 2019-9-28 07:59:18

欣汝发表于 2019-9-28 07:55
jeb怎么连接模拟器下断点

https://blog.csdn.net/magic1an/article/details/78300039

Narkylix · 发表于 2019-9-28 08:44:30

log_key = c.b(v3.toString().getBytes())意思是：将v3的值转成String类型，再转成byte数组传给c类下的b方法执行，返回值赋值给log_key

欣汝 · 发表于 2019-9-28 08:46:52

Narkylix 发表于 2019-9-28 08:44
log_key = c.b(v3.toString().getBytes())意思是：将v3的值转成String类型，再转成byte数组传给c类下的b方 ...

那这个是加密两次吗，V3等于V2，V2也调用了一次

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[已解决] 安卓反编译算法请教

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