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Added Apple EFI Package Extractor v2.0_a4
Added Apple EFI PBZX Extractor v1.0_a4 Updated Apple EFI Image Identifier v2.0_a4 Updated Apple EFI IM4P Splitter v3.0_a4 Updated Insyde iFlash/iFdPacker Extractor v2.0_a10 Improved 7-Zip parameter control
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platomav
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9 changed files with 482 additions and 20 deletions
193
Apple_EFI_ID.py
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193
Apple_EFI_ID.py
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#!/usr/bin/env python3
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#coding=utf-8
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"""
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Apple EFI ID
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Apple EFI Image Identifier
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Copyright (C) 2018-2022 Plato Mavropoulos
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"""
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TITLE = 'Apple EFI Image Identifier v2.0_a4'
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import os
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import sys
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import zlib
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import struct
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import ctypes
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import subprocess
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# Stop __pycache__ generation
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sys.dont_write_bytecode = True
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from common.externals import get_uefifind_path, get_uefiextract_path
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from common.path_ops import del_dirs, path_parent, path_suffixes
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from common.patterns import PAT_APPLE_EFI
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from common.struct_ops import char, get_struct, uint8_t
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from common.system import argparse_init, printer, script_init
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from common.text_ops import file_to_bytes
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class IntelBiosId(ctypes.LittleEndianStructure):
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_pack_ = 1
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_fields_ = [
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('Signature', char*8), # 0x00
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('BoardID', uint8_t*16), # 0x08
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('Dot1', uint8_t*2), # 0x18
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('BoardExt', uint8_t*6), # 0x1A
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('Dot2', uint8_t*2), # 0x20
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('VersionMajor', uint8_t*8), # 0x22
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('Dot3', uint8_t*2), # 0x2A
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('BuildType', uint8_t*2), # 0x2C
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('VersionMinor', uint8_t*4), # 0x2E
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('Dot4', uint8_t*2), # 0x32
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('Year', uint8_t*4), # 0x34
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('Month', uint8_t*4), # 0x38
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('Day', uint8_t*4), # 0x3C
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('Hour', uint8_t*4), # 0x40
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('Minute', uint8_t*4), # 0x44
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('NullTerminator', uint8_t*2), # 0x48
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# 0x4A
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]
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# https://github.com/tianocore/edk2-platforms/blob/master/Platform/Intel/BoardModulePkg/Include/Guid/BiosId.h
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@staticmethod
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def decode(field):
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return struct.pack('B' * len(field), *field).decode('utf-16','ignore').strip('\x00 ')
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def get_bios_id(self):
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BoardID = self.decode(self.BoardID)
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BoardExt = self.decode(self.BoardExt)
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VersionMajor = self.decode(self.VersionMajor)
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BuildType = self.decode(self.BuildType)
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VersionMinor = self.decode(self.VersionMinor)
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BuildDate = f'20{self.decode(self.Year)}-{self.decode(self.Month)}-{self.decode(self.Day)}'
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BuildTime = f'{self.decode(self.Hour)}-{self.decode(self.Minute)}'
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return BoardID, BoardExt, VersionMajor, BuildType, VersionMinor, BuildDate, BuildTime
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def struct_print(self, p):
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BoardID,BoardExt,VersionMajor,BuildType,VersionMinor,BuildDate,BuildTime = self.get_bios_id()
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printer(['Intel Signature:', self.Signature.decode('utf-8')], p, False)
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printer(['Board Identity: ', BoardID], p, False)
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printer(['Apple Identity: ', BoardExt], p, False)
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printer(['Major Version: ', VersionMajor], p, False)
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printer(['Minor Version: ', VersionMinor], p, False)
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printer(['Build Type: ', BuildType], p, False)
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printer(['Build Date: ', BuildDate], p, False)
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printer(['Build Time: ', BuildTime.replace('-',':')], p, False)
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# Check if input is Apple EFI image
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def is_apple_efi(input_file):
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input_buffer = file_to_bytes(input_file)
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if PAT_APPLE_EFI.search(input_buffer):
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return True
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if not os.path.isfile(input_file):
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return False
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try:
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_ = subprocess.run([get_uefifind_path(), input_file, 'body', 'list', PAT_UEFIFIND],
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check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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return True
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except:
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return False
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# Parse & Identify (or Rename) Apple EFI image
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def apple_efi_identify(input_file, output_path, padding=0, rename=False):
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if not os.path.isfile(input_file):
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printer('Error: Could not find input file path!', padding)
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return 1
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input_buffer = file_to_bytes(input_file)
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bios_id_match = PAT_APPLE_EFI.search(input_buffer) # Detect $IBIOSI$ pattern
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if bios_id_match:
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bios_id_res = f'0x{bios_id_match.start():X}'
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bios_id_hdr = get_struct(input_buffer, bios_id_match.start(), IntelBiosId)
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else:
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# The $IBIOSI$ pattern is within EFI compressed modules so we need to use UEFIFind and UEFIExtract
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try:
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bios_id_res = subprocess.check_output([get_uefifind_path(), input_file, 'body', 'list', PAT_UEFIFIND],
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text=True)[:36]
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temp_dir = os.path.join(f'{output_path}_uefiextract')
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del_dirs(temp_dir) # UEFIExtract must create its output folder itself, make sure it is not present
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_ = subprocess.run([get_uefiextract_path(), input_file, bios_id_res, '-o', temp_dir, '-m', 'body'],
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check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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with open(os.path.join(temp_dir, 'body.bin'), 'rb') as raw_body:
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body_buffer = raw_body.read()
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bios_id_match = PAT_APPLE_EFI.search(body_buffer) # Detect decompressed $IBIOSI$ pattern
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bios_id_hdr = get_struct(body_buffer, bios_id_match.start(), IntelBiosId)
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del_dirs(temp_dir) # Successful UEFIExtract extraction, remove its output (temp) folder
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except:
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printer('Error: Failed to parse compressed $IBIOSI$ pattern!', padding)
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return 2
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printer(f'Detected $IBIOSI$ at {bios_id_res}\n', padding)
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bios_id_hdr.struct_print(padding + 4)
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if rename:
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input_parent = path_parent(input_file)
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input_suffix = path_suffixes(input_file)[-1]
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input_adler32 = zlib.adler32(input_buffer)
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ID,Ext,Major,Type,Minor,Date,Time = bios_id_hdr.get_bios_id()
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output_name = f'{ID}_{Ext}_{Major}_{Type}{Minor}_{Date}_{Time}_{input_adler32:08X}{input_suffix}'
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output_file = os.path.join(input_parent, output_name)
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if not os.path.isfile(output_file):
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os.replace(input_file, output_file) # Rename input file based on its EFI tag
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printer(f'Renamed to {output_name}', padding)
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return 0
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PAT_UEFIFIND = f'244942494F534924{"."*32}2E00{"."*12}2E00{"."*16}2E00{"."*12}2E00{"."*40}0000'
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if __name__ == '__main__':
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# Set argparse Arguments
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argparser = argparse_init()
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argparser.add_argument('-r', '--rename', help='rename EFI image based on its tag', action='store_true')
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arguments = argparser.parse_args()
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rename = arguments.rename # Set EFI image tag renaming optional argument
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# Initialize script (must be after argparse)
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exit_code,input_files,output_path,padding = script_init(TITLE, arguments, 4)
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for input_file in input_files:
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input_name = os.path.basename(input_file)
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printer(['***', input_name], padding - 4)
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if not is_apple_efi(input_file):
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printer('Error: This is not an Apple EFI image!', padding)
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continue # Next input file
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extract_path = os.path.join(output_path, input_name)
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if apple_efi_identify(input_file, extract_path, padding, rename) == 0:
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exit_code -= 1
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printer('Done!', pause=True)
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sys.exit(exit_code)
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