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samrum / OnStarJS

NodeJS Library for making OnStar API requests
MIT License
85 stars 17 forks source link

How to derive onStarAppConfig? #212

Closed ddmore closed 1 year ago

ddmore commented 1 year ago

Hi there,

First off, amazing project. Thank you for your continuing commitment and it's so neat having this configured with my Home Assistant.

However, I am confused:

https://github.com/samrum/OnStarJS/blob/884b87cf488b3d6876e659a3ebb20d210bd1ada0/src/onStarAppConfig.json#L2-L3

How was this derived? It looks like it is an Android key, so I'm guessing load the APK in an enumerator and use tcpdump - is the key just in plaintext? Or.... how would one update this key, if the project ceased operations?

samrum commented 1 year ago

Hi, they're encrypted within the APK! There's actually a java class someone created to pull the values from the APK available here: https://github.com/samrum/OnStarJS/issues/208#issuecomment-1301587101

You can also grab them at runtime using an instrumentation tool like Frida.

glassbase commented 1 year ago

Use https://github.com/michaelwoods/onstar2mqtt for HA Much easier