Is there any way to disable this gdb’s feature? Yes, you can set disable-randomization off before running the program. See this part of gdb documentation: set disable-randomization off Leave the behavior of the started executable unchanged. Some bugs rear their ugly heads only when the program is loaded at certain addresses. If your bug disappears … Read more
The best way to disable locally the ASLR on a Linux-based system is to use processes personality flags. The command to manipulate personality flags is setarch with -R, –addr-no-randomize Disables randomization of the virtual address space (turns on ADDR_NO_RANDOMIZE). Here is how to proceed: $> setarch $(uname -m) -R /bin/bash This command runs a shell … Read more
The canonical address rules mean there is a giant hole in the 64-bit virtual address space. 2^47-1 is not contiguous with the next valid address above it, so a single mmap won’t include any of the unusable range of 64-bit addresses. +———-+ | 2^64-1 | 0xffffffffffffffff | … | | 2^64-2^47| 0xffff800000000000 +———-+ | | … Read more
Previously you had to opt in to allowing the linker to use ASLR. Now, you have to opt out: /DYNAMICBASE[:NO] (Visual Studio 2012: Configuration Properties -> Linker -> Advanced -> “Randomized Base Address”) You can also do it programmatically.
On Ubuntu , it can be disabled with… echo 0 > /proc/sys/kernel/randomize_va_space On Windows, this post might be of some help… http://blog.didierstevens.com/2007/11/20/quickpost-another-funny-vista-trick-with-aslr/
PIE is to support address space layout randomization (ASLR) in executable files. Before the PIE mode was created, the program’s executable could not be placed at a random address in memory, only position independent code (PIC) dynamic libraries could be relocated to a random offset. It works very much like what PIC does for dynamic … Read more