How to learn about iPhone jailbroken programming?

Posted by tomorini on Stack Overflow See other posts from Stack Overflow or by tomorini
Published on 2010-05-03T16:47:58Z Indexed on 2010/05/03 19:28 UTC
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iphone

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SDK

I'm interested in learning about what additional features and APIs an app has access to when an iPhone is jailbroken. Can someone provide me with some basic resources to learn about this? I would be most interested in:

documentation on the private APIs
filesystem layout
app configuration, e.g. how did WinterBoard replace SpringBoard? Apps that replace the lockscreen?
tools needed

Suggestions appreciated.

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