工欲善其事，必先利其器之—Android 反编译利器-classyshark

介绍

Android-classyshark，Google出口必属精品，你值得拥有!
classyshark的优点：
* 直接打开并反编译dex、apk、jar、arr
* 图形化操作，方便查看各类文件信息，方法类占比情况等
* 支持代码的增量搜索

安装

直接下载jar包，放在本地目录。我的习惯是放在如下本地目录（home/dev_tool/），并设置相关的快捷访问方式（注 意要 ： chmod +x ClassyShark.jar）

# 在.bash_profile添加如下alias
alias classyshark='{HOME}/dev_tool/ClassyShark.jar'

使用

示例：使用classyshark官中窥豹Bilibili APP

帮助

先看看帮忙说明

[e-mail] Downloads$ classyshark -h
missing command line arguments


Usage: java -jar ClassyShark.jar [-options] <archive> [args...]
           (to execute a ClassyShark on binary archive jar/apk/dex/class)
where options include:
    -open     open an archive with GUI
    -export   export to file
    -methodcounts     packages with method counts
    -inspect  experimental prints apk analysis
    -update updates ClassyShark
where args is an optional classname

实践

打开apk

[e-mail] Downloads$ classyshark -open iBiliPlayer-bili.apk

导出分析文件

[e-mail] Downloads$ classyshark -export iBiliPlayer-bili.apk
method_counts.txt
Parsing classes.dex
Parsing classes2.dex
Parsing classes3.dex
Parsing classes4.dex

输出的文件如下

-rw-r--r--  1 luogw  staff    102710  6 15 11:06 AndroidManifest.xml_dump
-rw-r--r--  1 luogw  staff    981951  6 15 11:06 all_classes.txt
-rw-r--r--  1 luogw  staff   7284500  6 15 11:06 all_methods.txt
-rw-r--r--  1 luogw  staff   6534696  6 15 11:06 all_strings.txt
-rw-r--r--  1 luogw  staff    982666  6 15 11:06 method_counts.txt

列出方法数

[e-mail] temp$ classyshark -methodcounts
iBiliPlayer-bili.apk

端终上输出method_counts.txt的内容

简要的分析

输出App的dex情况和使用的主要组件

[e-mail] temp$ classyshark -inspect iBiliPlayer-bili.apk

                  ~ APK DASHBOARD ~

+-------------------+------------------------------------------------------------------------------------------------------------------------------------+
| Recommendation    | Description                                                                                                                        |
+-------------------+------------------------------------------------------------------------------------------------------------------------------------+
|                   |                                                                                                                                    |
| classes.dex       | 65241 methods                                                                                                                      |
| classes2.dex      | 64840 methods                                                                                                                      |
| classes3.dex      | 65053 methods                                                                                                                      |
| classes4.dex      | 37920 methods                                                                                                                      |
|                   |                                                                                                                                    |
| Java              | Duplicate image loading libraries -  picasso fresco                                                                                |
|                   |                                                                                                                                    |
| System Broadcast  | android.intent.action.DOWNLOAD_COMPLETE ==> com.bilibili.ad.adview.web.apkdownload.ApkMgr$ApkDownloadReceiver                      |
| System Broadcast  | android.intent.action.MEDIA_BUTTON ==> tv.danmaku.biliplayer.features.headset.HeadsetControlPlayAdapter$HeadsetMediaButtonReceiver |
| System Broadcast  | android.net.conn.CONNECTIVITY_CHANGE ==> com.xiaomi.push.service.receivers.NetworkStatusReceiver                                   |
|                   |                                                                                                                                    |
+-------------------+------------------------------------------------------------------------------------------------------------------------------------+