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Mac下窥探私有API
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苹果已走向平民化,所以着手mac下的开发,发现一篇文章,与大家分享:http://cocoainchromium.blogspot.com/2011/05/disassembling-private-apis-on-mac-os-x.html

 

 

Disassembling Private APIs on Mac OS X

There are several ways to reverse engineer private APIs on Mac OS X. For example, if you needed to know how a certain AppKit function was implemented, you could try some of the following.

To find APIs in a library:
nm -g /System/Library/Frameworks/AppKit.framework/AppKit
To generate headers of Objective-C classes in a library:
class-dump -H -o /AppKit_Headers /System/Library/Frameworks/AppKit.framework/AppKit 
To view the disassembly of a function:
gdb /Applications/Calculator.app/Contents/MacOS/Calculator
break -[NSApplication run]
run
disas

To generate disassembly for an entire library:
otool -tV /System/Library/Frameworks/AppKit.framework/AppKit
I've recently also started using  otx. This works very similarly to otool but in addition it will annotate the assembly. The best part is that it will resolve Objective-C calls making it much easier to tell what a function is doing. Here's a sample output of otool (top) vs otx (bottom):
Until I discovered otx I had to trace Objective-C using the si/ni commands in gdb to figure out what a function was doing.

 


原文链接:http://blog.csdn.net/favormm/article/details/6571114
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长平狐
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