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AMI BIOS Guard Extractor v3.1

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File AMI_PFAT_X_DATA_ALL now includes AMI_PFAT_X_DATA_END
Applied various static analysis code fixes
This commit is contained in:
Plato Mavropoulos 2021-01-02 22:37:26 +02:00
parent fa1283ee54
commit e235b7fbc4
3 changed files with 10 additions and 11 deletions
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15
AMI BIOS Guard Extractor/AMI_PFAT_Extract.py
View file

@ -4,10 +4,10 @@
"""
AMI PFAT Extract
AMI BIOS Guard Extractor
Copyright (C) 2018-2020 Plato Mavropoulos
Copyright (C) 2018-2021 Plato Mavropoulos
"""
print('AMI BIOS Guard Extractor v3.0')
print('AMI BIOS Guard Extractor v3.1')
import sys
@ -21,7 +21,6 @@ if sys_ver < (3,7) :
import os
import re
import ctypes
import struct
import shutil
import traceback
@ -205,7 +204,7 @@ for input_file in ami_pfat :
input_dir = os.path.dirname(os.path.abspath(input_file))
file_data = b''
final_image = b''
final_data = b''
block_name = ''
block_count = 0
file_index = 0
@ -284,7 +283,7 @@ for input_file in ami_pfat :
print(' Error: BIOS Guard Script Tool dependency missing!')
file_data += block_data
final_image += block_data
final_data += block_data
if i and is_file_start and file_data :
file_index += 1
@ -296,9 +295,10 @@ for input_file in ami_pfat :
with open('%s_%0.2d -- %s' % (file_path, file_index + 1, block_name), 'wb') as o : o.write(file_data) # Last File
with open('%s_00 -- AMI_PFAT_%d_DATA_ALL.bin' % (file_path, pfat_index), 'wb') as final : final.write(final_image)
eof_data = buffer[block_start:] # Store any data after the end of PFAT
with open('%s_00 -- AMI_PFAT_%d_DATA_ALL.bin' % (file_path, pfat_index), 'wb') as final : final.write(final_data + eof_data)
if eof_data[:-0x100] != b'\xFF' * (len(eof_data) - 0x100) :
eof_path = '%s_%0.2d -- AMI_PFAT_%d_DATA_END.bin' % (file_path, file_index + 2, pfat_index)
with open(eof_path, 'wb') as final : final.write(eof_data)
@ -310,5 +310,4 @@ for input_file in ami_pfat :
else :
pfat_index = 1
else :
input('\nDone!')

2
LICENSE
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@ -1,4 +1,4 @@
Copyright (c) 2019-2020 Plato Mavropoulos
Copyright (c) 2019-2021 Plato Mavropoulos
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

2
README.md
View file

@ -66,7 +66,7 @@ Some Anti-Virus software may claim that the built/frozen/compiled executable con
Parses AMI BIOS Guard (a.k.a. PFAT, Platform Firmware Armoring Technology) images, extracts their SPI/BIOS/UEFI firmware components and decompiles the Intel BIOS Guard Scripts. It supports all AMI PFAT revisions and formats, including those with nested AMI PFAT structures. The output comprises only final firmware components which are directly usable by end users.
Note that the AMI PFAT structure does not have an explicit component order. AMI's BIOS Guard Firmware Update Tool (AFUBGT) updates components based on the user/OEM provided Parameters and Options. That means that merging all the components together does not usually yield a proper SPI/BIOS/UEFI image. The utility does generate such a merged file with the name "X_00 -- AMI_PFAT_X_DATA_ALL.bin" but it is up to the end user to determine its usefulness. Moreover, any custom OEM data after the AMI PFAT structure are stored in a file with the name "X_YY -- AMI_PFAT_X_DATA_END.bin" and it is once again up to the end user to determine its usefulness. In cases where the trailing custom OEM data include a nested AMI PFAT structure, the utility will process and extract it automatically as well.
Note that the AMI PFAT structure does not have an explicit component order. AMI's BIOS Guard Firmware Update Tool (AFUBGT) updates components based on the user/OEM provided Parameters and Options. That means that merging all the components together does not usually yield a proper SPI/BIOS/UEFI image. The utility does generate such a merged file with the name "X_00 -- AMI_PFAT_X_DATA_ALL.bin" but it is up to the end user to determine its usefulness. Moreover, any custom OEM data after the AMI PFAT structure are additionally stored in a file with the name "X_YY -- AMI_PFAT_X_DATA_END.bin" and it is once again up to the end user to determine its usefulness. In cases where the trailing custom OEM data include a nested AMI PFAT structure, the utility will process and extract it automatically as well.
#### **Usage**