Intel HEX转ASCII

有时候做刷写篡改，有的固件包无法用hexview工具篡改

于是根据Intel HEX的原理（https://blog.csdn.net/qfmzhu/article/details/129817980） 写了个方便看明文的小脚本

为了方便知道篡改哪里，顺便输出明文对应的hex位置

def parse_hex_and_map_to_plaintext(file_path, output_path):
    positions_and_data = []
    with open(file_path, 'r') as file:
        for line_num, line in enumerate(file):
            '''
            记录类型：2 个十六进制字符，表示记录的类型:
            00：数据记录
            01：文件结束记录
            02：扩展段地址记录
            04：扩展线性地址记录
            '''
            if line.startswith(":"):
                record_type = line[7:9]
                if record_type == "00":
                    data_length = int(line[1:3], 16)
                    data_start_index = 9
                    data_end_index = data_start_index + data_length * 2
                    data_hex = line[data_start_index:data_end_index]

                    ascii_text = ""
                    for i in range(0, len(data_hex), 2):
                        hex_byte = data_hex[i:i+2]
                        try:
                            char = chr(int(hex_byte, 16))
                            ascii_text += char if 32 <= ord(char) <= 126 else '.'
                        except ValueError:
                            continue

                    positions_and_data.append({
                        "line_num": line_num + 1,
                        "data_start": data_start_index,
                        "data_end": data_end_index,
                        "ascii_text": ascii_text,
                        "original_hex": data_hex
                    })

    with open(output_path, 'w') as output_file:
        for entry in positions_and_data:
            output_file.write(f"Line: {entry['line_num']}, Start: {entry['data_start']}, End: {entry['data_end']}, Text: {entry['ascii_text']}, Original HEX: {entry['original_hex']}\n")

file_path = '需要转换的hex文件'
output_path = 'result.txt'

parse_hex_and_map_to_plaintext(file_path, output_path)

print(f"{output_path}")

效果：