Android Question protect the APK as good as possible

marcel said:

Hi,

My customer want's me to protect the APK as good as possible. Currently I use the release (obfuscated) to protect it. But I found also a tool "DexProtector" which do similar things. But this cost a awful lot of money. Do you really think this is much better?

Are there any other alternatives that you know of?

Best Regards,

Marcel

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wonder said:

Simple! Once you have Android NDK on your computer, just compile the following code with my Native Library Generator:

B4X:

char* myString1()
{
    return "I am obfuscated.";
}

char* myString2()
{
    return "I am obfuscated too!";
}

... you catch my drift!

Despite not being 100% hacker proof (nothing is!), it's a lot harder to disassemble an .so library than a regular Java one.
If you're really interested in protecting your apk, by all means, get the ProBundle and read Fred's tutorial.

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wonder said:

Alright, so here's a small native obfuscation example.
The encryption algorithm isn't the strongest, but it should be enough.

Here's the B4A test code:

B4X:

Dim test As NativeObfuscationDemo
Dim out As String
For i = 0 To test.kL - 1
    out = out & test.gS(i)
Next
Log(out)

'Output: "password"

Source code, explanation and encryption tutorial available on request.

Click to expand...

wonder said:

Alright, so here's a small native obfuscation example.
The encryption algorithm isn't the strongest, but it should be enough.

Here's the B4A test code:

B4X:

Dim test As NativeObfuscationDemo
Dim out As String
For i = 0 To test.kL - 1
    out = out & test.gS(i)
Next
Log(out)

'Output: "password"

Source code, explanation and encryption tutorial available on request.

Click to expand...

elitevenkat said:

Then kindly tell me how to secure my apk. Is there any tool available? I use source cop utility for encrypting my php apps.

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