Debugging an Undebuggable iOS App

Posted by brycebostwick on Monday January 20, 2025 @12:35PM
from the bryce.co dept.

( 2 comments | 2 points | on HN )

Re:Debugging an Undebuggable iOS App by josephcsible on Monday January 20, 2025 @03:21PM (#42772648)

Is there any legitimate purpose of PT_DENY_ATTACH? It seems to me like it would only have evil uses.

[ Parent | on HN ]

Re:Debugging an Undebuggable iOS App by brycebostwick on Monday January 20, 2025 @10:09PM (#42776049)

I could imagine _some_ arguments for it back when it was first introduced (first reference I can find to it is from 2004) — this was pre OS X Sandbox, let alone SIP. It makes sense that some OS X apps would want to prevent being debugged by other (potentially malicious) apps. Semi developer-hostile in my opinion, but I get it.

That being said, on modern iOS... the benefit seems pretty minimal. Even Apple agrees https://forums.developer.apple.com/forums/thread/701621

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