CTF入门 WECALL

发表于 2020-05-15 更新于 2020-10-31 阅读次数： Valine：

本文字数： 852 阅读时长 ≈ 1 分钟

初学CTF 入门太难

wecall challenges 解决方法

training steganoI

$cat xxx.bmp
https://www.tecmint.com/13-basic-cat-command-examples-in-linux/

Crypto - Caesar I

python函数 list() ord() chr()

WWW-Robots

robots.txt
The robots.txt file is used by web crawlers to check if they are allowed to crawl and index your website or only parts of it.
Sometimes these files reveal the directory structure instead protecting the content from being crawled.

URL ENCODE

URL encoding replaces unsafe ASCII characters with a “%” followed by two hexadecimal digits. 十六进制
URLs cannot contain spaces. URL encoding normally replaces a space with a plus (+) sign or with %20.
URLs can only be sent over the Internet using the ASCII character-set.

python 3.7

from urllib.parse import unquote
tar -xf 解压缩？自动识别
java -jar

Training: Programming 1

urllib.request

urlopen返回的是二进制数据，decode(‘utf-8’)解码

正则表达式

https://zh.wikipedia.org/wiki/%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F

‘weshall’

wechall4?.(jpg|gif|tiff|bmp|png)