GXYCTF2019：gakki

真学不来2024-11-01 9:25

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 collections

def count_characters(filename):
    with open(filename, 'r', encoding='utf-8') as file:
        content = file.read()
        counter = collections.Counter(content)
        return counter

def 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}