OSX（10.10.4 ） 反编译APK 和 混淆

反编译

准备工作

• 安装APKTOOL how to install
• 安装dex2jar install(sourceforge下的dex2jar-0.0.9.15.zip)
• 安装jd gui install

使用方法

• apktool 安装和使用参照文档

• dex2jar使用
  从apk所在的目录打开终端 (从文件夹打开终端)，运行

  softrice$ unzip ./app-release.apk

  文件夹下出现classes.dex，把他拉入dex2jar文件夹。终端跳转到dex2jar文件夹，执行

  softrice$ sudo sh dex2jar.sh classes.dex

  文件夹下出现jar包，用jd gui 打开就可以看源码了。

  dex2jar使用的时候最开始的使用dex2jar2.0,加权限后使用的时候报无权限,。后来改用sourceforge下的dex2jar-0.0.9.15.zip.
  dex2jar使用

混淆

在build.gradle加入

android {
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

混淆是很方便,但是打包成apk后各种问题。
proguard-android.txt和proguard-rules.pro就是用来申明哪些代码不被混淆。
proguard-android.txt是安卓默认，可以在sdk下找到他

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html

-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.

-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService

# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native ;
}

# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}

# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keepclassmembers class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator CREATOR;
}

-keepclassmembers class **.R$* {
    public static ;
}

# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

proguard-rules.pro则需要我们做一些修改。
先了解一些规则 proguard

这是我所用的

# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in D:\Android\sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}
    #指定代码的压缩级别
    -optimizationpasses 5

    #包明不混合大小写
    -dontusemixedcaseclassnames

    #不去忽略非公共的库类
    -dontskipnonpubliclibraryclasses

     #优化  不优化输入的类文件
    -dontoptimize

     #预校验
    -dontpreverify

     #混淆时是否记录日志
    -verbose

     # 混淆时所采用的算法
    -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

    #保护注解
    -keepattributes *Annotation*
    # 保持哪些类不被混淆
    -keep public class * extends android.app.Fragment
    -keep public class * extends android.app.Activity
    -keep public class * extends android.app.Application
    -keep public class * extends android.app.Service
    -keep public class * extends android.content.BroadcastReceiver
    -keep public class * extends android.content.ContentProvider
    -keep public class * extends android.app.backup.BackupAgentHelper
    -keep public class * extends android.preference.Preference
    -keep public class com.android.vending.licensing.ILicensingService
    #如果有引用v4包可以添加下面这行
    -keep public class * extends android.support.v4.app.Fragment



    #忽略警告
    -ignorewarning

    ##记录生成的日志数据,gradle build时在本项目根目录输出##

    #apk 包内所有 class 的内部结构
    -dump class_files.txt
    #未混淆的类和成员
    -printseeds seeds.txt
    #列出从 apk 中删除的代码
    -printusage unused.txt
    #混淆前后的映射
    -printmapping mapping.txt


    #####混淆保护自己项目的部分代码以及引用的第三方jar包library#######

    #-libraryjars libs/umeng-analytics-v5.2.4.jar

    #三星应用市场需要添加:sdk-v1.0.0.jar,look-v1.0.1.jar
    #-libraryjars libs/sdk-v1.0.0.jar
    #-libraryjars libs/look-v1.0.1.jar
    #不混淆第三方jar包中的类
    -keep class com.android.volley.** {*;}
    -keep class com.Chart.** {*;}
    -keep class com.xxx.lib.** {*;}
    -keep class antistaic.spinnerwheel.** {*;}
    -keep class com.xxx.xxx.model.** {*;}
    -keep class com.xxx.xxx.modules.** {*;}
    -keep class com.facebook.** {*;}
    -keep class com.google.** {*;}
    -keep class in.srain.cube.** {*;}

    -keep class cn.sharesdk.**{*;}
    -keep class com.sina.**{*;}
    -keep class **.R$* {*;}
    -keep class **.R{*;}
    -dontwarn cn.sharesdk.**
    -dontwarn **.R$*

    #baidu push
    -libraryjars libs/pushservice-VERSION.jar
    -dontwarn com.baidu.**
    -keep class com.baidu.**{*; }



    #如果引用了v4或者v7包
    -dontwarn android.support.**

    ####混淆保护自己项目的部分代码以及引用的第三方jar包library-end####

    -keep public class * extends android.view.View {
        public (android.content.Context);
        public (android.content.Context, android.util.AttributeSet);
        public (android.content.Context, android.util.AttributeSet, int);
        public void set*(...);
    }

    #保持 native 方法不被混淆
    -keepclasseswithmembernames class * {
        native ;
    }

    #保持自定义控件类不被混淆
    -keepclasseswithmembers class * {
        public (android.content.Context, android.util.AttributeSet);
    }

    #保持自定义控件类不被混淆
    -keepclassmembers class * extends android.app.Activity {
       public void *(android.view.View);
    }

    #保持 Parcelable 不被混淆
    -keep class * implements android.os.Parcelable {
      public static final android.os.Parcelable$Creator *;
    }

    #保持 Serializable 不被混淆
    -keepnames class * implements java.io.Serializable

    #保持 Serializable 不被混淆并且enum 类也不被混淆
    -keepclassmembers class * implements java.io.Serializable {
        static final long serialVersionUID;
        private static final java.io.ObjectStreamField[] serialPersistentFields;
        !static !transient ;
        !private ;
        !private ;
        private void writeObject(java.io.ObjectOutputStream);
        private void readObject(java.io.ObjectInputStream);
        java.lang.Object writeReplace();
        java.lang.Object readResolve();
    }

    #保持枚举 enum 类不被混淆 如果混淆报错，建议直接使用上面的 -keepclassmembers class * implements java.io.Serializable即可
    #-keepclassmembers enum * {
    #  public static **[] values();
    #  public static ** valueOf(java.lang.String);
    #}

    -keepclassmembers class * {
        public void *ButtonClicked(android.view.View);
    }

    #不混淆资源类
    -keepclassmembers class **.R$* {
        public static ;
    }

    #避免混淆泛型 如果混淆报错建议关掉
    #–keepattributes Signature

    #移除log 测试了下没有用还是建议自己定义一个开关控制是否输出日志
    #-assumenosideeffects class android.util.Log {
    #    public static boolean isLoggable(java.lang.String, int);
    #    public static int v(...);
    #    public static int i(...);
    #    public static int w(...);
    #    public static int d(...);
    #    public static int e(...);
    #}

    #如果用用到Gson解析包的，直接添加下面这几行就能成功混淆，不然会报错。
    #gson
    #-libraryjars libs/gson-2.2.2.jar
    -keepattributes Signature
    # Gson specific classes
    -keep class sun.misc.Unsafe { *; }
    # Application classes that will be serialized/deserialized over Gson
    -keep class com.google.gson.examples.android.model.** { *; }