security - How i can allocate null page memory on Windows 8? -
security - How i can allocate null page memory on Windows 8? -
could please describe me how can allocate memory in bottom regions (first 64 kb)?
so, know windows 8 has introduced new mitigation disable null page allocation. there way allow allocation - http://www.askvg.com/windows-8-comes-with-built-in-16-bit-application-support/.
so, have been trying method 16-bit application - 16-bit app has runned sucessfully (i have seen ntvdm.exe
process in task manager) own application couldn't allocate (i have checked windbg).
this flags in lastly seek (i straight phone call ntallocatevirtualmemory
ntdll.dll):
size_t mappedsize = 0x1000; pvoid mappedaddress = (pvoid)1; ntallocatevirtualmemory(getcurrentprocess(), &mappedaddress, 0, &mappedsize, mem_reserve | mem_commit | mem_top_down, page_execute_readwrite);
is there compile alternative enable np allocation or else?
thank you!
it disabled in windows 8 prevent exploits seems can enable in 32 bit version of win 8 enabling 16 bit back upwards (no thought how)
windows security null allocation
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