天天看点

smali 2 java mac_Mac上简单的Android逆向

首先,这只是最初步的Android逆向,没有逆向so文件,有没有什么内存寻址啊之类的高级技术。我就是想告诉小白,可以用这种办法看看Apk的部分代码。

毕竟Mac上国内的免费工具比Windows上少很多

一共3个工具,Apktool,dex2jar,JD-GUI.作用分别是,

Apktool:解析apk包,获取资源文件和smail代码

dex2jar:逆向class.dex文件,得到jar包

JD-GUI:查看jar包文件里的java代码

1.安装APKTOOL

我知道有人不爱看网站上的英文,你们太懒了

不着急,还要一个启动文件----

代码如下

#!/bin/bash

#

# Copyright (C) 2007 The Android Open Source Project

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# This script is a wrapper for smali.jar, so you can simply call "smali",

# instead of java -jar smali.jar. It is heavily based on the "dx" script

# from the Android SDK

# Set up prog to be the path of this script, including following symlinks,

# and set up progdir to be the fully-qualified pathname of its directory.

prog="$0"

while [ -h "${prog}" ]; do

newProg=`/bin/ls -ld "${prog}"`

newProg=`expr "${newProg}" : ".* -> \(.*\)$"`

if expr "x${newProg}" : 'x/' >/dev/null; then

prog="${newProg}"

else

progdir=`dirname "${prog}"`

prog="${progdir}/${newProg}"

fi

done

oldwd=`pwd`

progdir=`dirname "${prog}"`

cd "${progdir}"

progdir=`pwd`

prog="${progdir}"/`basename "${prog}"`

cd "${oldwd}"

jarfile=apktool.jar

libdir="$progdir"

if [ ! -r "$libdir/$jarfile" ]

then

echo `basename "$prog"`": can't find $jarfile"

exit 1

fi

javaOpts=""

# If you want DX to have more memory when executing, uncomment the following

# line and adjust the value accordingly. Use "java -X" for a list of options

# you can pass here.

#

javaOpts="-Xmx512M"

# Alternatively, this will extract any parameter "-Jxxx" from the command line

# and pass them to Java (instead of to dx). This makes it possible for you to

# add a command-line parameter such as "-JXmx256M" in your ant scripts, for

# example.

while expr "x$1" : 'x-J' >/dev/null; do

opt=`expr "$1" : '-J\(.*\)'`

javaOpts="${javaOpts} -${opt}"

shift

done

if [ "$OSTYPE" = "cygwin" ] ; then

jarpath=`cygpath -w "$libdir/$jarfile"`

else

jarpath="$libdir/$jarfile"

fi

# add current location to path for aapt

PATH=$PATH:`pwd`;

export PATH;

exec java $javaOpts -Djava.awt.headless=true -jar "$jarpath" "$@"

复制后,建一个没有后缀的文件,把这些代码放在文件里,可以用sublime text

smali 2 java mac_Mac上简单的Android逆向

sublime text

command+s保存到桌面,名字叫apktool

不要后缀!不要后缀!不要后缀!

刚刚下载到的jar包拿到桌面上,改名字叫apktool.jar

两个文件复制剪切到/usr/local/bin文件夹里,这里需要root管理员权限,

我的系统是OS X10.11,默认是隐藏root用户的,这个坑你们自己跳吧,很简单

复制进去后,给那个没有后缀的文件加上执行权限

打开终端,敲命令

$:cd /usr/local/bin

$:chmod +x apktool

要是执行报错的话,说明没有apktool,或者你根本没有权限,去开启root先!

到上面完成,就可以反编译apk了

2.安装dex2jar

smali 2 java mac_Mac上简单的Android逆向

点download

得到一只zip包,解压获得文件夹一只。

smali 2 java mac_Mac上简单的Android逆向

文件结构

就这样了,你也可以将命令配置到/usr/local/bin下,创建link来启动dex2jar,我懒,就没弄了

3.安装JD-GUI

smali 2 java mac_Mac上简单的Android逆向

好多版本啊

这个超简单,把app文件拖到Application文件夹下就搞定了

4.我们来反编译吧

现在桌面上有一个demo.apk文件,我们复制一份,demo副本.apk

将副本文件名的后缀改为zip,即demo副本.zip

获取xml反编译文件和smail代码

启动终端

$:cd /User/zing/Desktop

$:apktool d demo.apk

然后等跑完,里面的资源文件就出来了,还有smail源码,你要是会读的话跟java差不多

不会读的话,我们继续

反编译calss.dex文件

刚刚的demo副本.zip解压获得demo副本文件夹,进入文件夹后拷贝classes.dex

smali 2 java mac_Mac上简单的Android逆向

classes.dex文件

回到dex2jar 解压的目录下,将文件复制进去

我的dex2jar文件夹在桌面上

$:cd /User/zing/Desktop/dex2jar-2.0

$:./d2j-dex2jar.sh classes.dex

如果没有执行权限

$:cd /User/zing/Desktop/dex2jar-2.0

$:chmod +x ./*

$:./d2j-dex2jar.sh classes.dex

这个时候文件夹下回多出一个jar文件classes-dex2jar.jar

查看jar文件代码

将classes-dex2jar.jar文件放到桌面上

打开JD-GUI,

smali 2 java mac_Mac上简单的Android逆向

这就不用教了吧,打开jar文件

就可以看代码了

上大图

smali 2 java mac_Mac上简单的Android逆向

大图!

love&peace,求点赞……