void *virtual_alloc_ex(HANDLE process_handle, void *addr,
uintptr_t size, uint32_t allocation_type, uint32_t protection)
{
assert(pNtAllocateVirtualMemory != NULL,
"pNtAllocateVirtualMemory is NULL!", NULL);
SIZE_T real_size = size;
if(NT_SUCCESS(pNtAllocateVirtualMemory(process_handle, &addr, 0,
&real_size, allocation_type, protection)) != FALSE) {
return addr;
}
return NULL;
}
hook_data_t *alloc_hookdata_near(void *addr)
{
PVOID BaseAddress;
int offset = -(1024 * 1024 * 1024);
SIZE_T RegionSize = sizeof(hook_data_t);
LONG status;
do {
if (offset < 0 && (ULONG_PTR)addr < (ULONG_PTR)-offset)
offset = 0x10000;
BaseAddress = (PCHAR)addr + offset;
status = pNtAllocateVirtualMemory(GetCurrentProcess(), &BaseAddress, 0, &RegionSize, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (status >= 0)
return (hook_data_t *)BaseAddress;
offset += 0x10000;
} while (status < 0 && offset <= (1024 * 1024 * 1024));
return NULL;
}