{"id":614,"date":"2011-03-23T23:22:05","date_gmt":"2011-03-23T22:22:05","guid":{"rendered":"http:\/\/cerezo.name\/blog\/?p=614"},"modified":"2024-10-14T14:21:10","modified_gmt":"2024-10-14T12:21:10","slug":"android-decompilation-obfuscation","status":"publish","type":"post","link":"http:\/\/cerezo.name\/blog\/2011\/03\/23\/android-decompilation-obfuscation\/","title":{"rendered":"Android Decompilation &<\/span> Obfuscation"},"content":{"rendered":"

I get more than a hundred visits a day to my iPhone Decompilation &<\/span> Obfuscation<\/a> post, that\u2019s why writing an Android equivalent and comparing the results between them will be so interesting to assess platform demand from developers.<\/p>\n

To decompile an Android .apk file, you must follow the next steps:<\/p>\n

    \n
  1. Download the app from the Android Market to your smartphone and backup the app with a tool like Titanium<\/a> to get the .apk file<\/li>\n
  2. Next, use apktool<\/a> to get back the project file structure and resources<\/li>\n
  3. Then, use dex2jar<\/a> to the obtain .class files from the .dex files<\/li>\n
  4. After that, use jd-gui<\/a> or JAD<\/span><\/a> to decompile the .class files<\/li>\n
  5. Most bytecode won\u2019t perfectly decompile and some routines will be hard to reconstruct from the bytecode: get ready to read java ASM<\/span> disassembled with smali<\/a><\/li>\n<\/ol>\n

    To obfuscate\/protect your application, consider following these steps:<\/p>\n