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https://github.com/platomav/BIOSUtilities.git
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Insyde iFlash/iFdPacker Extractor v2.0_a8
Improved PFAT, UCP, PFS, TDK format check methods Cleanup/improvements to all utilities
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platomav
parent
cd2704f743
commit
4749414f81
21 changed files with 603 additions and 435 deletions
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@ -7,7 +7,7 @@ AMI BIOS Guard Extractor
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Copyright (C) 2018-2022 Plato Mavropoulos
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"""
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TITLE = 'AMI BIOS Guard Extractor v4.0_a10'
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TITLE = 'AMI BIOS Guard Extractor v4.0_a11'
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import os
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import re
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@ -19,10 +19,10 @@ sys.dont_write_bytecode = True
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from common.externals import get_bgs_tool
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from common.num_ops import get_ordinal
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from common.path_ops import safe_name, make_dirs
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from common.path_ops import make_dirs, safe_name
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from common.patterns import PAT_AMI_PFAT
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from common.struct_ops import get_struct, char, uint8_t, uint16_t, uint32_t
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from common.system import script_init, argparse_init, printer
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from common.struct_ops import char, get_struct, uint8_t, uint16_t, uint32_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 AmiBiosGuardHeader(ctypes.LittleEndianStructure):
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@ -128,22 +128,22 @@ class IntelBiosGuardSignature2k(ctypes.LittleEndianStructure):
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printer(['Exponent :', f'0x{self.Exponent:X}'], p, False)
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printer(['Signature:', f'{Signature[:32]} [...]'], p, False)
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def is_ami_pfat(in_file):
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input_buffer = file_to_bytes(in_file)
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def is_ami_pfat(input_file):
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input_buffer = file_to_bytes(input_file)
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return bool(get_ami_pfat(input_buffer)[0])
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return bool(get_ami_pfat(input_buffer))
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def get_ami_pfat(input_buffer):
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def get_ami_pfat(input_file):
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input_buffer = file_to_bytes(input_file)
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match = PAT_AMI_PFAT.search(input_buffer)
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buffer = input_buffer[match.start() - 0x8:] if match else b''
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return match, buffer
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return input_buffer[match.start() - 0x8:] if match else b''
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def get_file_name(index, name):
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return safe_name(f'{index:02d} -- {name}')
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def parse_bg_script(script_data, padding):
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def parse_bg_script(script_data, padding=0):
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is_opcode_div = len(script_data) % 8 == 0
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if not is_opcode_div:
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@ -177,7 +177,7 @@ def parse_bg_script(script_data, padding):
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return 0
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def parse_pfat_hdr(buffer, padding):
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def parse_pfat_hdr(buffer, padding=0):
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block_all = []
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pfat_hdr = get_struct(buffer, 0x0, AmiBiosGuardHeader)
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@ -220,7 +220,11 @@ def parse_pfat_hdr(buffer, padding):
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return block_all, hdr_size, files_count
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def parse_pfat_file(buffer, output_path, padding):
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def parse_pfat_file(input_file, output_path, padding=0):
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input_buffer = file_to_bytes(input_file)
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pfat_buffer = get_ami_pfat(input_buffer)
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file_path = ''
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all_blocks_dict = {}
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@ -230,7 +234,7 @@ def parse_pfat_file(buffer, output_path, padding):
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make_dirs(extract_path, delete=True)
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block_all,block_off,file_count = parse_pfat_hdr(buffer, padding)
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block_all,block_off,file_count = parse_pfat_hdr(pfat_buffer, padding)
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for block in block_all:
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file_desc,file_name,_,_,_,file_index,block_index,block_count = block
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@ -244,7 +248,7 @@ def parse_pfat_file(buffer, output_path, padding):
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block_status = f'{block_index + 1}/{block_count}'
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bg_hdr = get_struct(buffer, block_off, IntelBiosGuardHeader)
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bg_hdr = get_struct(pfat_buffer, block_off, IntelBiosGuardHeader)
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printer(f'Intel BIOS Guard {block_status} Header:\n', padding + 8)
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@ -252,11 +256,11 @@ def parse_pfat_file(buffer, output_path, padding):
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bg_script_bgn = block_off + PFAT_BLK_HDR_LEN
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bg_script_end = bg_script_bgn + bg_hdr.ScriptSize
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bg_script_bin = buffer[bg_script_bgn:bg_script_end]
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bg_script_bin = pfat_buffer[bg_script_bgn:bg_script_end]
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bg_data_bgn = bg_script_end
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bg_data_end = bg_data_bgn + bg_hdr.DataSize
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bg_data_bin = buffer[bg_data_bgn:bg_data_end]
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bg_data_bin = pfat_buffer[bg_data_bgn:bg_data_end]
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block_off = bg_data_end # Assume next block starts at data end
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@ -265,7 +269,7 @@ def parse_pfat_file(buffer, output_path, padding):
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if is_sfam:
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bg_sig_bgn = bg_data_end
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bg_sig_end = bg_sig_bgn + PFAT_BLK_S2K_LEN
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bg_sig_bin = buffer[bg_sig_bgn:bg_sig_end]
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bg_sig_bin = pfat_buffer[bg_sig_bgn:bg_sig_end]
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if len(bg_sig_bin) == PFAT_BLK_S2K_LEN:
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bg_sig = get_struct(bg_sig_bin, 0x0, IntelBiosGuardSignature2k)
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@ -280,21 +284,22 @@ def parse_pfat_file(buffer, output_path, padding):
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_ = parse_bg_script(bg_script_bin, padding + 12)
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with open(file_path, 'ab') as out_dat: out_dat.write(bg_data_bin)
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with open(file_path, 'ab') as out_dat:
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out_dat.write(bg_data_bin)
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all_blocks_dict[file_index] += bg_data_bin
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pfat_oob_data = buffer[block_off:] # Store out-of-bounds data after the end of PFAT files
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pfat_oob_data = pfat_buffer[block_off:] # Store out-of-bounds data after the end of PFAT files
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pfat_oob_name = get_file_name(file_count + 1, f'{extract_name}_OOB.bin')
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pfat_oob_path = os.path.join(extract_path, pfat_oob_name)
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with open(pfat_oob_path, 'wb') as out_oob: out_oob.write(pfat_oob_data)
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with open(pfat_oob_path, 'wb') as out_oob:
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out_oob.write(pfat_oob_data)
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oob_pfat_match,pfat_oob_buffer = get_ami_pfat(pfat_oob_data)
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if oob_pfat_match: parse_pfat_file(pfat_oob_buffer, pfat_oob_path, padding)
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if is_ami_pfat(pfat_oob_data):
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parse_pfat_file(pfat_oob_data, pfat_oob_path, padding)
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in_all_data = b''.join([block[1] for block in sorted(all_blocks_dict.items())])
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@ -302,7 +307,10 @@ def parse_pfat_file(buffer, output_path, padding):
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in_all_path = os.path.join(extract_path, in_all_name)
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with open(in_all_path, 'wb') as out_all: out_all.write(in_all_data + pfat_oob_data)
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with open(in_all_path, 'wb') as out_all:
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out_all.write(in_all_data + pfat_oob_data)
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return 0
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PFAT_AMI_HDR_LEN = ctypes.sizeof(AmiBiosGuardHeader)
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PFAT_BLK_HDR_LEN = ctypes.sizeof(IntelBiosGuardHeader)
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@ -321,18 +329,17 @@ if __name__ == '__main__':
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printer(['***', input_name], padding - 4)
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with open(input_file, 'rb') as in_file: input_buffer = in_file.read()
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with open(input_file, 'rb') as in_file:
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input_buffer = in_file.read()
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pfat_match,pfat_buffer = get_ami_pfat(input_buffer)
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if not pfat_match:
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if not is_ami_pfat(input_buffer):
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printer('Error: This is not an AMI BIOS Guard (PFAT) 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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parse_pfat_file(pfat_buffer, extract_path, padding)
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parse_pfat_file(input_buffer, extract_path, padding)
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exit_code -= 1
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