GXYCTF2019：gakki

把题目给的附件解压后给了张图片，顺带着瞟一眼属性，没有值得注意的

binwalk检测一手，看见有个rar压缩包

提取出来的压缩包是有密码的，但是题目并没有给出获取密码的途径，所以先爆破试试，用最常用的四位数爆破

果然是四位数密码的爆破，flag.txt里面是一大串的乱码

用python脚本进行字频统计

import collectionsdef count_characters(filename):with open(filename, 'r', encoding='utf-8') as file:content = file.read()counter = collections.Counter(content)return counterdef print_sorted_counts(counter):for char, count in counter.most_common():print(f"'{char}': {count}")def main():filename = input("请输入文本文件的路径：")try:char_counts = count_characters(filename)print_sorted_counts(char_counts)except FileNotFoundError:print("文件未找到，请检查路径是否正确。")except Exception as e:print(f"发生错误：{e}")if __name__ == "__main__":main()

flag：flag{gaki_IsMyw1fe}