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Mac OS X: NX flag app, cookies on the stack and ASLR enabled?

I want to know if the executable supports general safeguards such as the NX flag, cookie stack or ASLR. ASLR seems to be installed at the OS level, but how do you know that it is turned on? On Windows, some executables do not support ASLR, so I was wondering how this can be determined on Mac OS X.

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First of all, the ALSR used in OSX 10.6 and below did not randomize all memory areas . As far as I know, ASLR is enabled for all running executables. It is very easy to test, just run the debugger, set a breakpoint and write down any memory address on the stack. Restart the application and check if the same variable has the same memory address.

I think in OSX 10.7 they started randomizing the dynamic linker. Which linux, bsd and even windows systems have been working for several years.

OSX, ASLR export DYLD_PRINT_SEGMENTS=1, . TEXT . . , ASLR.

- . . GCC . , , . , , , .

NX, , , 1999 , . , , , , ret-to-libc ROP (- aslr).

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