Mitmproxy gives us the following snippet to reproduce the early API call that gets a list of seasons: Now, let us export curl(1) snippets for both of these requests and use curlconverter to convert them Luckily for us, the app makes the following request that gets a JSON response with a list of seasons, one of which is marked as We don’t want to hardcode these parameters and will be looking into earlier API calls to see Notably, it has start_season_season parameter with the value winter and start_season_year The API call is to /v3/anime endpoint with a bunch of URL parameters narrowing down theĮxact data the app wants to receive. x-mal-client-id seems to be an API key that is hardcoded into the appĪnd that we will be reusing in our script. This is a rather straightforward call to RESTful API that asks for a JSON response that can beĬompressed. We discover that data about currently airing anime TV series is loaded via the following API request: GET HTTP/2.0 If we want toĮxport requests, responses or both to a file that can be either curl(1) snippet or raw representation of HTTP messages, weĬan press the E key and mitmproxy will present a menu with several choices.įlow details - request Flow details - response We can navigate the flow list with arrow keys and press Enter on the entry that we want to inspect closer. To clean up the flow list so that the exact flows you want to see for specific action appear on the top of new list. Pay closeĪttention to what HTTP flows correspond to which action is performed on the app. In mitmproxy parlance, flow is a collection of inter-related network messages.Īt this point, we are only concerned about HTTP flows that consist of HTTP requests and corresponding responses. Requests appearing in mitmproxy flow list. We start by performing user actions on the app and see We are ready to do some reverse engineering of API communications. Once mitmproxy is running in the local network and iPhone is configured to pass HTTP requests through mitmproxy instance, Reverse Engineering a Private API with mitmproxy on Youtube.Intercept iOS/Android Network Calls using mitmproxy on Medium.Youtube videos detailing on how to do this with both iOS and Android devices. In this post, I won’t be covering how to set up mitmproxy with your mobile device as there are many blog posts and Luckily MAL app does not perform TLS cert pinning which makes it fairly easy to intercept HTTP proxy server that can be launched on your computer and provide a way to inspect and modify the HTTP traffic even The tool we will be using for intercepting HTTP traffic is called mitmproxy. Interested in is “This Season” subtab in “Seasonal” tab. To exemplify API scraping, we will be extracting a list of ongoing anime TV series form Scraping script that reproduces API calls to extract the exact information that the app is showing on the mobile device. In this post, we will go through an example of the reverse engineering private API of a mobile app and developing a simple API We define API scraping as the activity of automatically extracting data from reverse engineered private APIs. Web scraping is a widely known way to gather information from external sources.
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