status_t is_WINDOWS_KERNEL(vmi_instance_t vmi, addr_t base_p, uint8_t *pe) {
status_t ret = VMI_FAILURE;
void *optional_pe_header = NULL;
uint16_t optional_header_type = 0;
struct export_table et;
peparse_assign_headers(pe, NULL, NULL, &optional_header_type, &optional_pe_header, NULL, NULL);
addr_t export_header_offset = peparse_get_idd_rva(IMAGE_DIRECTORY_ENTRY_EXPORT, &optional_header_type, optional_pe_header, NULL, NULL);
// The kernel's export table is continuously allocated on the PA level with the PE header
// This trick may not work for other PE headers (though may work for some drivers)
uint32_t nbytes = vmi_read_pa(vmi, base_p + export_header_offset, &et, sizeof(struct export_table));
if(nbytes == sizeof(struct export_table) && !(et.export_flags || !et.name) ) {
char *name = vmi_read_str_pa(vmi, base_p + et.name);
if(name) {
if(strcmp("ntoskrnl.exe", name)==0)
ret = VMI_SUCCESS;
free(name);
}
}
return ret;
}
status_t is_WINDOWS_KERNEL(vmi_instance_t vmi, addr_t base_p, uint8_t *pe) {
status_t ret = VMI_FAILURE;
void *optional_pe_header = NULL;
uint16_t optional_header_type = 0;
struct export_table et;
peparse_assign_headers(pe, NULL, NULL, &optional_header_type, &optional_pe_header, NULL, NULL);
addr_t export_header_offset = peparse_get_idd_rva(IMAGE_DIRECTORY_ENTRY_EXPORT, &optional_header_type, optional_pe_header, NULL, NULL);
// The kernel's export table is continuously allocated on the PA level with the PE header
// This trick may not work for other PE headers (though may work for some drivers)
if ( base_p + export_header_offset < base_p + VMI_PS_4KB ) {
if( VMI_SUCCESS == vmi_read_pa(vmi, base_p + export_header_offset, sizeof(struct export_table), &et, NULL) &&
!(et.export_flags || !et.name))
{
char *name = vmi_read_str_pa(vmi, base_p + et.name);
if(name) {
if(strcmp("ntoskrnl.exe", name)==0)
ret = VMI_SUCCESS;
free(name);
}
}
}
// The export header may be stripped from the kernel so check section names.
// This is commonly the case with Windows 10.
if ( ret == VMI_FAILURE ) {
ret = check_sections(vmi, base_p, pe);
}
return ret;
}