JAL
  • Member for 5 years, 2 months
  • Last seen more than a month ago
How are Apple App Store Apps encrypted?
17 votes

When you download an app from the App Store, Apple injects a special 4196 byte long header into the signed binary encrypted with the public key associated with your iTunes account. This public/...

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How does Apple enforce the expiration of beta apps distributed through TestFlight
6 votes

I'm assuming you are talking about beta versions of apps distributed through TestFlight. While the iOS Distribution profile used to sign the app may not be expired, the profile used on the device in ...

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How to differentiate between while(1) and do while?
4 votes

This answer assumes you are trying to compare while (1) with do { } while(1) for simplicity, but should work with other conditions: Take these two small C programs: Just while: #include <stdio.h&...

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Going around finding a signature used in a .APK file
3 votes

The signature is likely a hash based on some string value and the current date (potentially milliseconds since the epoch). This question is impossible to answer without the source code, but try ...

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Will jailbreaking affect file system accessibility for all apps?
Accepted answer
2 votes

Let me try to break down what you're asking. I find when use a jailbreak device I can access /Applications/. Yes, that's correct. A jailbroken device can access an iOS device's root file system ...

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Reverse engineering a PXP3 Slimstation
2 votes

It is unlikely that you will be able to get any information about the device via the USB port. Most likely, that would just provide access to either a memory card or read/write flash memory. What ...

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MacOS: Output to console in non-console app
Accepted answer
2 votes

It really depends what the application you are trying to run is logging to. If the application uses NSLog() and other associated Cocoa APIs, you're in luck. The output should appear in the Apple ...

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Extract an image out of a application and customize after edited
1 votes

Many images in OS X applications live in the bundle. Meaning they are linked with the application, but not compiled into the binary. One exception to this would be if the application is using an ...

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Can a RTMPS stream be authenticated by a cookie?
1 votes

Possibly, but it's unlikely that secure information like the RTMP auth key is stored in an insecure cookie. What is most likely happening is that Nest has a REST API used for authentication. After ...

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Analysis of SSL traffic from a Windows 10 application
1 votes

I'm not sure if this will solve your issue, but have you tried using Charles Proxy with SSL Proxying enabled? Charles can perform a man-in-the-middle attack and get the contents of the applications's ...

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The Nokia CA-50 cable has a longer USB port. Does it hide any kind of chip?
0 votes

The USB cable might have contained a chip to handle some special I/O, but I don't think it was anything special. In fact, there is a third party cable with a smaller male USB end which appears to ...

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Any Disassembler for iOS?
0 votes

For a long time, I was using gdb from Cydia on my iPad 2 (it should still work on any 32-bit device). You can dump memory by attaching gdb to the running application's pid: ps ax | grep [app name] ...

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