b2130_[0xGame-2022] [MISC]_Time To Live writeup

import binascii# 读取文件并处理每一行file_path = r"g:tempTime To Live.txt"try:    with open(file_path, 'r') as file:        lines = file.readlines()    # 初始化二进制字符串    bina = ''    for line in lines:        a = int(line.strip())  # 去除可能的换行符并转换为整数        a = bin(a)[2:].zfill(8)  # 转换为二进制并填充到8位        bina += a[:4]  # 只取前4位    # 将二进制字符串转换为字节    # 由于a2b_hex需要十六进制字符串，我们需要将二进制字符串转换为十六进制    # 每两个二进制位对应一个十六进制位    hex_str = ''    for i in range(0, len(bina), 4):        binary_chunk = bina[i:i+4]        hex_str += format(int(binary_chunk, 2), 'x')  # 转换为十六进制    # 使用binascii.a2b_hex将十六进制字符串转换为字节    base = binascii.a2b_hex(hex_str)    print(base)except Exception as e:    print("发生错误",e)