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Android可视化反编译工具

Android可视化反编译工具绿色免费版

现在的手机基本都被安卓和IOS占据了,IOS是封闭系统,不可能破解,但是对于开源的安卓,我们可以进行学习反编译,今天小编就分享一个Android可视化反编译工具

反编译资料分享

假设我们有一个应用,它的类文件编译后被单独拿了出来,即有两个文件app.apk和app.odex,把他们放在$AndroidDecompile下。

1. 使用 baksmali.jar 将 odex 文件分解为 smali 文件

$ java –jar baksmali-1.2.5.jar –x app.odex

如果成功的话,会在 $AndroidDecompile下生成一个 out目录,里面是一些以“.smali”为后缀名的文件,在此不深究这些文件的作用。

2. 使用 smali.jar将 out/目录下的smali文件转换为 classes.dex

$ java -Xmx512M –jar smali-1.2.5.jar out –o classes.dex

classes.dex便是Dalvik VM所使用的编译后的类文件格式,在正常的apk文件里都会有。

3. 使用 dex2jar将classes.dex反编译为jar文件

将下载后的dex2jar压缩包解压后,里面会有dex2jar.sh(和dex2jar.bat)文件,假如classes.dex文件与dex2jar.sh在同一目录下,使用以下方式将classes.dex反编译为jar文件:

$dex2jar.sh classes.dex

如果执行成功,则会在当前目录下生成反编译后的文件classes.dex.dex2jar.jar。

dex2jar即可以操作dex文件,也可以直接操作apk文件,它的使用规则为:

dex2jar file1.dexORapk file2.dexORapk ...

4. 使用JD-GUI查看反编译后的jar文件

JD-GUI是一个可视化的Java反编译代码查看器,它可以实时的将class文件反编译成java文件进行查看。解压下载的jd-gui文件,执行目录中的jd-gui可执行文件启动,然后加载上一步中反编译好的classes.dex.dex2jar.jar文件即可。

5. 将从odex反编译后的classes.dex与其他资源文件重新打包成一个完整的apk

以上我们假设的情况是应用程序编译后的类文件从apk文件中被剥离出来,下面要做的是如何将上述步骤中得到的classes.dex与apk中的其他文件重新打包成一个可用的apk。

首先将反编译后的classes.dex和原先的app.apk(不含classes.dex)重新压缩成一个完整的app.apk(apk文件可用压缩工具打开),也就是说将classes.dex放进app.apk中。

将下载的AutoSign文件解压,可以看到有signapk.jar(还有个Sign.bat)文件,执行以下命令给app.apk文件签名,就可以生成一个可以运行的apk文件了。

$ java -jar signapk.jar testkey.x509.pem testkey.pk8 app.apk app_signed.apk

6. apktool的使用

网上还有个工具是apktool,可以对apk进行解析,反编译资源文件,并将类文件解析成smali文件;同时还可以将解析后的文件重新打包成apk。功能和以上介绍的几个工具类似,它的使用方法如下:

apktool d app.apk and    反编译 app.apk到文件夹and

apktool b app                从文件夹app重建APK,输出到ABC\dist\out.apk

具体的使用方法在此不再赘述,请参考官方网站,或者:

http://www.geeka.net/2010/05/apktool-decode-android-google-code/

7. 我的 $AndroidDecompile目录下的文件的截图

一些工具的帮助信息

1. baksmali 的帮助信息

usage: java -jar baksmali.jar [options] <dex-file>

disassembles and/or dumps a dex file

 -?,--help                                 Prints the help message then exits.

 -b,--no-debug-info                         Specify twice for debug options

                           don't write out debug info (.local,

                                           .param, .line, etc.)

 -c,--bootclasspath <BOOTCLASSPATH>      The bootclasspath jars to use, for

                                           analysis. Defaults to

                                           core.jar:ext.jar:framework.jar:andro

                                           id.policy.jar:services.jar. If the

                                           value begins with a :, it will be

                                           appended to the default

                                           bootclasspath instead of replacing it

 -d,--bootclasspath-dir <DIR>                The base folder to look for the

                                           bootclasspath files in. Defaults to

                                           the current directory

 -f,--code-offsets                           Add comments to the disassembly

                                           containing the code offset for each address

 -l,--use-locals                             Output the .locals directive with

                                           the number of non-parameter

                                           registers, rather than the .register

 -o,--output <DIR>                         Directive with the total number of  register

                                           the directory where the disassembled

                                           files will be placed. The default is out

 -p,--no-parameter-registers                  Use the v<n> syntax instead of the

                                           p<n> syntax for registers mapped to

                                           method parameters

 -r,--register-info <REGISTER_INFO_TYPES>  Print the specificed type(s) of

                                           register information for each

                                           instruction. "ARGS,DEST" is the

                                           default if no types are specified.

                                           Valid values are:

                                           ALL: all pre- and post-instruction registers.

                                           ALLPRE: all pre-instruction registers

                                           ALLPOST: all post-instruction registers

                                           ARGS: any pre-instruction registers

                                               used as arguments to the instruction

                                           DEST: the post-instruction

                                               destination register, if any

                                           MERGE: Any pre-instruction register

                                               has been merged from more than 1

                                               different post-instruction register

                                               from its predecessors

                                           FULLMERGE: For each register that

                                             would be printed by MERGE, also show

                                             the incoming register types that

                                             were merged

 -s,--sequential-labels                       Create label names using a

                                           sequential numbering scheme per

                                           label type, rather than using the

                                           bytecode address

 -v,--version                               Prints the version then exits

 -x,--deodex                               Deodex the given odex file. This

                                           option is ignored if the input file

                                           is not an odex file

2. smali 的帮助信息

usage: java -jar smali.jar [options] [--] [<smali-file>|folder]*

assembles a set of smali files into a dex file

 -?,--help            prints the help message then exits. Specify twice for

                      debug options

 -o,--output <FILE>   the name of the dex file that will be written. The default

                      is out.dex

 -v,--version         prints the version then exits

3. auto-sign 的帮助信息

SignApk.jar is a tool included with the Android platform source bundle.

testkey.pk8 is the private key that is compatible with the recovery image included in this zip file

testkey.x509.pem is the corresponding certificate/public key

Usage:

java -jar signapk.jar testkey.x509.pem testkey.pk8 update.zip update_signed.zip

4. apktool 的帮助信息

Apktool v1.3.2 - a tool for reengineering Android apk files

Copyright 2010 Ryszard Wi?niewski <brut.alll@gmail.com>

Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0)

Usage: apktool [-v|--verbose] COMMAND [...]

COMMANDs are:

    d[ecode] [OPTS] <file.apk> [<dir>]

        Decode <file.apk> to <dir>.

        OPTS:

        -s, --no-src

            Do not decode sources.

        -r, --no-res

            Do not decode resources.

        -d, --debug

            Decode in debug mode. Check project page for more info.

        -f, --force

            Force delete destination directory.

        -t <tag>, --frame-tag <tag>

            Try to use framework files tagged by <tag>.

        --keep-broken-res

            Use if there was an error and some resources were dropped, e.g.:

            "Invalid config flags detected. Dropping resources", but you

            want to decode them anyway, even with errors. You will have to

            fix them manually before building.

    b[uild] [OPTS] [<app_path>] [<out_file>]

        Build an apk from already decoded application located in <app_path>.

        It will automatically detect, whether files was changed and perform

        needed steps only.

        If you omit <app_path> then current directory will be used.

        If you omit <out_file> then <app_path>/dist/<name_of_original.apk>

        will be used.

        OPTS:

        -f, --force-all

            Skip changes detection and build all files.

        -d, --debug

            Build in debug mode. Check project page for more info.

    if|install-framework <framework.apk> [<tag>]

        Install framework file to your system.

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