Allows to automate the use of apktool and dex2jar to reverse engineer an apk file.

reverse

#!/usr/bin/env php
<?php

/**
 *  Allows to automate the use of apktool and dex2jar to reverse engineer an apk file.
 *
 *  Usage: 
 * 
 *   	reverse <file-apk>
 *  or
 *      reverse d <file-apk> --> display more detailed infos
 * 
 *  Copy the script in file named reverse in a directory containing (give execute right with: chmod +x reverse)
 * 	---> the application apk to be decoded
 * 	---> apktool (http://code.google.com/p/android-apktool/) 
 * 	---> dex2jar (http://code.google.com/p/dex2jar/)
 * 
 *  Let say that we have an application apk named: be.evolution.myapp.apk
 *  Run: reverse be.evolution.myapp.apk
 * 
 *  Two directories will be created :
 *  	be.evolution.myapp  --> containing the resources and android manifest decoded
 *      be.evolution.myapp- --> containing the java classes in a classes-dex2jar folder
 * 
 *  To reverse the code, use jd-gui (http://java.decompiler.free.fr/?q=jdgui) or jdeclipse plugin.
 * 
 * 	Author : Jean-François Lefebvre
 *  	E-mail : lefebvre.jf@gmail.com
 * 
 */

$options = getopt("d::");

$debug = isset($options['d']);

if ($argc==1) {
	echo 'Usage:' . PHP_EOL;
	echo 'reverse application-name.apk' . PHP_EOL;
	echo 'reverse -d application-name.apk' . PHP_EOL;
	die();
}

$apkFilename = ($debug) ? $argv[2] : $argv[1];

if (strpos($apkFilename, 'apk') ===FALSE) {
	echo 'the argument must be an apk file' . PHP_EOL;
	die();
}

echo 'Run apktool ...' . PHP_EOL;
$result = shell_exec("apktool d $apkFilename");
if ($debug) {
	echo $result . PHP_EOL;
}

echo 'Copy apk to zip ...' . PHP_EOL;
$zipFile = str_replace('.apk', '-.zip', $apkFilename);
$result = shell_exec("cp $apkFilename $zipFile");

$targetDirectory = str_replace('.zip', '', $zipFile);

echo 'Unzip archive ...' . PHP_EOL;
$result = shell_exec("unzip -o $zipFile -d $targetDirectory");
if ($debug) {
	echo $result . PHP_EOL;
}

echo 'Run dex2jar ...' . PHP_EOL;
$result = shell_exec("./d2j-dex2jar.sh --force $targetDirectory/classes.dex");
if ($debug) {
	echo $result . PHP_EOL;
}

echo 'Move classes-dex2jar ...' . PHP_EOL;
$result = shell_exec("mv  classes-dex2jar.jar $targetDirectory/classes-dex2jar.zip");
if ($debug) {
	echo $result . PHP_EOL;
}

echo "Unzip classes to $targetDirectory" . PHP_EOL;
$result = shell_exec("unzip -o $targetDirectory/classes-dex2jar.zip -d $targetDirectory/classes-dex2jar");
if ($debug) {
	echo $result . PHP_EOL;
}

echo "DONE !" . PHP_EOL;

?>