ASLR, Address Space Layout Randomization
Address space layout randomization (ASLR) is a computer security technique involved in protection from buffer overflow attacks. In order to prevent an attacker from reliably jumping to a particular exploited function in memory (for example), ASLR involves randomly arranging the positions of key data areas of a program, including the base of the executable and the positions of the stack, heap, and libraries, in a process’s address space.
From http://en.wikipedia.org/wiki/Address_space_layout_randomization
Mach-O
Mach-O, short for Mach object file format, is a file format for executables, object code, shared libraries, dynamically-loaded code, and core dumps. A replacement for the a.out format, Mach-O offered more extensibility and faster access to information in the symbol table.
Mach-O was once used by most systems based on the Mach kernel.[citation needed] NeXTSTEP, OS X, and iOS are examples of systems that have used this format for native executables, libraries and object code.
http://en.wikipedia.org/wiki/Mach-O
There are several tools turning ASLR/PIE off, some of those need to be compiled. So I decided to write one in Python. Repository: https://github.com/sskaje/disable_aslr
Disable ASLR on jailbroken iPod Touch 4 with python installed from Cydia
Disable ASLR on OS X for iOS App
https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/MachORuntime/Reference/reference.html
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