mirror of
https://github.com/platomav/BIOSUtilities.git
synced 2025-05-13 22:54:46 -04:00
69 lines
No EOL
2.2 KiB
Python
69 lines
No EOL
2.2 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 v2.0\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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match_hdr = re.compile(br'\xAA\xEE\xAA\x76\x1B\xEC\xBB\x20\xF1\xE6\x51.\x78\x9C', re.DOTALL).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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# 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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# Decompress zlib payload from 0x789C via Python
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decomp_data = zlib.decompress(bios_data[match_hdr.start() + 0xC:match_hdr.start() + 0xC + compressed_size])
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output_name = input_name + '.hdr'
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with open(output_name, 'wb') as hdr_file : hdr_file.write(decomp_data)
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print('\n Decompressed %s%s via Python' % (input_name, input_extension))
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# Extract the Dell HDR image via LongSoft's PFSExtractor-RS
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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!') |