mirror of
https://github.com/platomav/BIOSUtilities.git
synced 2025-05-13 14:44:46 -04:00
bdcb70c2c8
Added "Working..." indicators while running at all scripts Added dependency filename expectations when required Apple EFI File Renamer now saves the checksum in hex
79 lines
No EOL
2.4 KiB
Python
79 lines
No EOL
2.4 KiB
Python
#!/usr/bin/env python3
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"""
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Dell HDR Extract
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Dell HDR Module Extractor
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Copyright (C) 2018 Plato Mavropoulos
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Inspired from https://forums.mydigitallife.net/threads/i-present-you-a-tool-to-decompress-dell-uefi-bios.44785/ by JimboBobB
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"""
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print('Dell HDR Module Extractor v1.1\n')
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import os
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import re
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import sys
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import zlib
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import subprocess
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if len(sys.argv) >= 2 :
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# Drag & Drop or CLI
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hdr_exec = sys.argv[1:]
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else :
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# Folder path
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hdr_exec = []
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in_path = input('\nEnter the full folder path: ')
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print('\nWorking...')
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for root, dirs, files in os.walk(in_path):
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for name in files :
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hdr_exec.append(os.path.join(root, name))
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for input_file in hdr_exec :
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input_name,input_extension = os.path.splitext(os.path.basename(input_file))
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print('\nFile: %s%s' % (input_name, input_extension))
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with open(input_file, 'rb') as in_file : bios_data = in_file.read()
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# Compressed Dell HDR pattern followed by the zlib header of 0x789C
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pat_hdr = re.compile(br'\xAA\xEE\xAA\x76\x1B\xEC\xBB\x20\xF1\xE6\x51.\x78\x9C', re.DOTALL)
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match_hdr = pat_hdr.search(bios_data)
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# Check if Compressed Dell HDR pattern was found
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if not match_hdr :
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print('\n Error: No Dell HDR found at %s%s!' % (input_name, input_extension))
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continue # Next input file
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# Detected Compressed Dell HDR pattern
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while match_hdr :
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# Store the compressed zlib data size from the proceeding 4 bytes of the Dell HDR pattern
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compressed_size = int.from_bytes(bios_data[match_hdr.start() - 0x4:match_hdr.start()], 'little')
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# Store compressed zlib data
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compressed_data = bios_data[match_hdr.start() + 0xC:match_hdr.start() + 0xC + compressed_size]
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# Decompress zlib payload
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bios_data = zlib.decompress(compressed_data)
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# Scan for nested zlib data streams
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match_hdr = pat_hdr.search(bios_data)
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else :
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output_name = input_name + '.hdr'
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with open(output_name, 'wb') as hdr_file : hdr_file.write(bios_data)
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print('\n Decompressed %s%s via Python' % (input_name, input_extension))
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# Call LongSoft's PFSExtractor-RS to extract the Dell HDR container
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try :
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subprocess.run(['PFSExtractor', output_name], check = True, stdout = subprocess.DEVNULL)
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if os.path.isfile(output_name) : os.remove(output_name)
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print(' Extracted %s via PFSExtractor-RS' % output_name)
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except :
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print(' Error: Could not extract %s via PFSExtractor-RS!' % output_name)
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print(' Make sure that "PFSExtractor" executable exists!')
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else :
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input('\nDone!') |