There is PoC code that works with the newer Safari/iCloud KeyChain storage but not if a [T1 or T2 chip](https://en.wikipedia.org/wiki/Apple_Silicon#T_series) is in the machine: https://github.com/n0fate/iChainbreaker
Bug 1018667 Comment 13 Edit History
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There is proof-of-concept code that works with the newer Safari/iCloud KeyChain storage but not if a [T1 or T2 chip](https://en.wikipedia.org/wiki/Apple_Silicon#T_series) is in the machine: https://github.com/n0fate/iChainbreaker