KiwiApkProtect is an encryption service for mobile android applications that helps Internet companies and individual developers protect core technologies and intellectual property rights.Users only need to provide the packaged APK file, which can integrate DEX file encryption, SO file shell, anti-secondary packaging and other security functions.For different application security requirements, different levels of security protection functions can be provided, such as high-intensity security confrontation, you can choose to use Java2C, code confusion or KiwiVM .

• Dex Packer: The Ultimate Packer for Dex file, prevent java code extraction by dex2jar.
• Function Encryption: Extracting java functions from Dex files for encryption protection.
• Java2C Encryption: Translate Java code into C code and implement the protection of the Native.
• So Packer: The Ultimate Packer for So file, to prevent reverse analysis by IDA tool.
• Memory Protection: Protect memory data from memory dump, tampering and other attacks.
• Anti-debugging: Prevent applications from being debugged by GDB and IDA tools
• Anti-secondary Packaging: Signature verification to prevent piracy applications.
• Self Protection: Protecting the program's own code with virtualization

Android app encryption is an encryption service for mobile android applications that helps Internet companies and individual developers protect core technologies and intellectual property rights.Users only need to provide the packaged APK file, which can integrate DEX file encryption, SO file shell, anti-secondary packaging and other security functions.For different application security requirements, different levels of security protection functions can be provided, such as high-intensity security confrontation, you can choose to use Java2C, code confusion or KiwiVM .

• Risk summary: Decompilation DEX files, decompilation SO files, stealing core technologies, stealing sensitive data, implanting malicious viruses, tampering with copyright information, cracking authorization code, cracking communication protocols, secondary packaging and many other security risks.

• Source of risk:

• Function introduction:

You can find the KiwiApkProtect documentation on the website.

After purchasing the KiwiApkEncrypt, the key of the computer to be bound is extracted by the machine code generation tool provided by the Kiwisec. The Kiwisec will generate the corresponding KiwiApkEncrypt according to the Key, authorization time, authorized package name and enterprise information.

• At windows

Reliance on tools:Ubuntu.
System:Must be Windows 10 version 16215.0 or later
Processor architecture:X64

Configuration steps：

1. Enter the Microsoft Store.

2. Select and install Ubuntu, pay attention to system requirements.

3. Start Ubuntu directly or from the start menu and go to the command line window

4. Set UNIX user and password (default user name, can be switched to root via sudo su)

5. Execute: sudo dpkg --add-architecture i386 add 32bit library support

6. Execute: sudo apt update update the source

7. Execute: sudo apt install qemu-user-static openjdk-8-jre-headless python unzip lib32ncurses5-dev Install dependent libraries

8. Execute sudo update-binfmts --install i386 /usr/bin/qemu-i386-static --magic '\x7fELF\x01\x01\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x03\x00\x01\x00\x00\x00' --mask '\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xf8\xff\xff\xff\xff\xff\xff\xff'

9. Open the DOS command line and execute ubuntu config --default-user root，Switching the default user to root is especially important because the compiler cannot run otherwise

10. Unpack the android-ndk-r10e，unzip is recommended，Avoid affecting file permissions。Android NDK download address：https://github.com/android-ndk/ndk/wiki

11. install java8

• MacOS and Linux Install java8 and android-ndk-r10e.

1. After decompression tool kit, click on the directory KiwiSecEncrypt executable file to start tool, the following figure

2. The Windows version must specify the Android NDK path, click the Settings button at the top as shown below

3. After selecting the APK file that needs to be encrypted, click the start encryption button to enter the pre-compilation stage. The following figure

4. Pre-compilation mainly analyzes DEX files to extract Java functions that can be converted into C. [the analysis stage takes several minutes, please wait patiently], as shown in the figure below

5. After the pre-compilation, according to the project situation, you can customize according to the project requirements, check the core code function, Java2C conversion. Memory protection, anti-debugging, anti-secondary packaging function default integration, temporarily can not be customized check, as shown in the figure below

6. After the custom check is completed, click Encrypt Now . The encryption process takes several minutes. Please wait patiently. If this fails, troubleshoot the error log or send the log file to the technical support staff.

7. After encryption, click Open Dir button to open the encrypted file location. The encrypted file name format is .kws.apk. If you need to modify the export directory, enter the Settings page.

8. To sign the encrypted apk file, you must use the same signature file as before the encryption, otherwise it will be regarded as piracy and cannot operate normally. It is suggested to check V2 version, which is more secure.

9. After signing, you can install, run and use it.

10. In case of any problem, please contact our customer service or technical support

Relying on the technical advantages of the team, KiwiSec focuses on next-generation technology and product development in mobile safety. After 8 years of accumulation in compiler security technology, and 3 years’ continuous research and development, the original KiwiVM virtual machine product has completely solved the problems of weak protection and poor compatibility inherent in traditional technologies such as hardening and obfuscation, providing a convenient and effective security solution.

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