Android逆向实例笔记—记一个超简单但是没良心的锁机app
刚看到一个论坛的朋友给了这个app，然后来玩玩，结果看了下，他帖子就不见了。大哥，你给的这个app吓到我了，怎么办，赔钱！！！真是无语，学术交流就交流嘛，真的事！！！写出来给刚入门的小白引引路而已，大神勿笑我们来看看界面这个样子http://img.blog.csdn.net/20160925222558836?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
我们反编译，看看进入提供的入口。
.class public Lpjz/cnm/w;
.super Landroid/app/Activity;
.source "w.java"
# direct methods
.method public constructor <init>()V
.locals 3
.prologue
.line 22
move-object v0, p0
move-object v2, v0
invoke-direct {v2}, Landroid/app/Activity;-><init>()V
return-void
.end method
# virtual methods
.method public native a(Ljava/lang/String;)V
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/lang/String;",
")V"
}
.end annotation
.end method
.method public onCreate(Landroid/os/Bundle;)V
.locals 13
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Landroid/os/Bundle;",
")V"
}
.end annotation
.annotation runtime Ljava/lang/Override;
.end annotation
.prologue
move-object v0, p0
move-object v1, p1
move-object v5, v0
invoke-static {v5}, LLogCatBroadcaster;->start(Landroid/content/Context;)V
.line 18
move-object v5, v0
move-object v6, v1
invoke-super {v5, v6}, Landroid/app/Activity;->onCreate(Landroid/os/Bundle;)V
.line 19
move-object v5, v0
const v6, 0x7f030001
invoke-virtual {v5, v6}, Lpjz/cnm/w;->setContentView(I)V
.line 20
new-instance v5, Landroid/content/Intent;
move-object v12, v5
move-object v5, v12
move-object v6, v12
move-object v7, v0
:try_start_0
const-string v8, "pjz.cnm.s"
invoke-static {v8}, Ljava/lang/Class;->forName(Ljava/lang/String;)Ljava/lang/Class;
:try_end_0
.catch Ljava/lang/ClassNotFoundException; {:try_start_0 .. :try_end_0} :catch_0
move-result-object v8
invoke-direct {v6, v7, v8}, Landroid/content/Intent;-><init>(Landroid/content/Context;Ljava/lang/Class;)V
move-object v2, v5
.line 21
move-object v5, v0
move-object v6, v2
invoke-virtual {v5, v6}, Lpjz/cnm/w;->startService(Landroid/content/Intent;)Landroid/content/ComponentName;
move-result-object v5
return-void
.line 20
:catch_0
move-exception v5
move-object v3, v5
new-instance v5, Ljava/lang/NoClassDefFoundError;
move-object v12, v5
move-object v5, v12
move-object v6, v12
move-object v7, v3
invoke-virtual {v7}, Ljava/lang/Throwable;->getMessage()Ljava/lang/String;
move-result-object v7
invoke-direct {v6, v7}, Ljava/lang/NoClassDefFoundError;-><init>(Ljava/lang/String;)V
throw v5
.end method
发现没有什么可用的信息
看着界面，我们去搜索看看直接搜索序列号
http://img.blog.csdn.net/20160925223603931?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
只有一个结果，有戏过去一看，吓死人了
真是无语，被吓惨
http://img.blog.csdn.net/20160925224156797?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
http://img.blog.csdn.net/20160925224204325?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
http://img.blog.csdn.net/20160925224210591?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Centerhttp://img.blog.csdn.net/20160925224215481?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
最后一张图就把关键的地方弄出来了
http://img.blog.csdn.net/20160925224243283?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
后面就不多说了
其实我真不知道，为何这些锁机的app明明是害人的，为何还这么吊。
xiaomeimei1997 发表于 2016-9-25 23:01
我帖子还在，我在模拟器输入密码后立刻出现了第二个锁屏。http://www.52pojie.cn/thread-540205 ...
不还意思，刚没找到。的确我没找到第二个锁屏。我用的模拟器 xiaomeimei1997 发表于 2016-9-25 23:01
我帖子还在，我在模拟器输入密码后立刻出现了第二个锁屏。http://www.52pojie.cn/thread-540205 ...
你能把第二个app弄出来么？我想看看 我帖子还在{:301_998:}，我在模拟器输入密码后立刻出现了第二个锁屏。http://www.52pojie.cn/thread-540205-1-1.html 锁机的孩子真是霸气啊，有没有认，没有人认就打死了啊 牵走天涯 发表于 2016-9-25 23:26
你能把第二个app弄出来么？我想看看
这个我也弄不出来，帖子里有的出现了第二个锁屏，有的没出来。不是一个好玩的病毒 xiaomeimei1997 发表于 2016-9-26 13:17
这个我也弄不出来，帖子里有的出现了第二个锁屏，有的没出来。不是一个好玩的病毒
原来还是看人品的时候哇 顶一下，抚慰下楼主受伤的心 感谢分享
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