#Hopper Disassembler for apple instal code#
#Hopper Disassembler for apple instal zip#

We can use this to see everything that goes from the Lyft app. Inspecting Network Traffic - Charles Demo (4:08)Ĭharles is an HTTPS proxy tool that you set to intercept traffic before it goes to the Internet.

#Hopper Disassembler for apple instal code#

app, that executable file, is structured, and look at their code through a certain lens. And when it isn’t running, we can actually try to look at how the.

Basically, when the app is running, you can poke and prod their living objects. Then we can also inject code, which is really cool. This allows us to see not only how they are interacting with their API, but also to see what information about you they’re sending up to the servers - most of which is harmless such as analytics. One way to do so is to look at all the network traffic that Lyft app sends out to the Lyft server. We can’t really see into it, but we can get peeks into it from certain angles. In addition it has many frameworks, because Lyft writes in Swift which encourages modules. It also has the executable, which is where all the fun stuff is - the compiled code. It has a bunch of metadata, like the ist, along with assets, images, localized strings, and more things like that.

#Hopper Disassembler for apple instal zip#

IPA file that you download from iTunes - essentially a ZIP file. In particular, Lyft’s URL scheme isn’t public yet. As a result, I get to do this all the time.

It’s especially relevant for Workflow because it is an automation tool, and we integrate with many different apps. This allows you to request this specific ride type to a specific location, things like that. First thing is, what questions are we going to ask about the Swift app? Suppose I’m curious about the REST API or I want to write my own Lyft client on another platform or on web, I can look at how their API works and ask, “How does their URL scheme work?” This is a particularly relevant question because a lot of you make iOS apps and you want to be able to deep link into Lyft. I decided to start with a test subject, Lyft’s iOS app, because it’s written entirely in Swift. “What does their REST API look like?” You can actually just find out how their API works. So, the first thing you do when you’re reverse engineering is you come up with questions like, “Why does this bug occur? What component do they use in their UI?” For instance, if you’re curious about whether an app uses a collection view or table view, you can actually ask that question and answer it. We could be looking through a bug in UIKit or someone else’s app. You can also reverse engineer frameworks such as Apple’s own frameworks, which are all closed source. Furthermore you don’t actually have to reverse engineer just apps.

Once you’re using the tools, knowing what to look for inside of another app is pretty hard as there are many things to search through.Therefore, it’s difficult to get good at using these tools and knowing where to find them in the first place. They break all the time and no one really fixes them. Operating tools are difficult because the tools themselves are usually not very well documented and pretty obscure.

There are two pain points when you’re doing reverse engineering. app you download from the App Store, without its source code. In context of an iOS app, this means finding out how an app works just by the. Basically, reverse engineering is trying to understand how something works based on only the end result. I’m Conrad Kramer, an iOS developer at Workflow, and I will discuss reverse engineering of iOS apps. Using Conrad’s techniques, you can expose the code behind any app on the App Store. He even demonstrates the art of reverse engineering on Lyft’s iOS app, injecting code into it and inspecting its network traffic. In this talk, Conrad covers many concepts & tools that can used to reverse-engineer existing apps, as well as debug other libraries and even your own code. If you’ve ever needed to know how another piece of code works, or have been at the mercy of someone else’s bugs, you can always look at the source code… unless you don’t have it.