Topsec杯CTF大赛解题笔记

来源：互联网发布：药智数据库官网编辑：程序博客网时间：2024/06/02 03:32

编码解码初级

Q2hyJTI4OTglMjklN0MlN0NDaHIlMjgxMDElMjklN0MlN0NDaHIlMjg0OCUyOSU3QyU3Q0NociUyODk4JTI5JTdDJTdDQ2hyJTI4NTElMjklN0MlN0NDaHIlMjg5OSUyOSU3QyU3Q0NociUyODUxJTI5JTdDJTdDQ2hyJTI4MTAwJTI5JTdDJTdDQ2hyJTI4OTclMjklN0MlN0NDaHIlMjg1NyUyOSU3QyU3Q0NociUyODQ4JTI5JTdDJTdDQ2hyJTI4NTMlMjklN0MlN0NDaHIlMjgxMDElMjklN0MlN0NDaHIlMjg5OSUyOSU3QyU3Q0NociUyODEwMSUyOSU3QyU3Q0NociUyODEwMSUyOQ==

明显这是一个Base64加密的串，直接用WinHex转换出来：

Chr%2898%29%7C%7CChr%28101%29%7C%7CChr%2848%29%7C%7CChr%2898%29%7C%7CChr%2851%29%7C%7CChr%2899%29%7C%7CChr%2851%29%7C%7CChr%28100%29%7C%7CChr%2897%29%7C%7CChr%2857%29%7C%7CChr%2848%29%7C%7CChr%2853%29%7C%7CChr%28101%29%7C%7CChr%2899%29%7C%7CChr%28101%29%7C%7CChr%28101%29

看起来是一个URLEncode的串，在线Decode之后：

Chr(98)||Chr(101)||Chr(48)||Chr(98)||Chr(51)||Chr(99)||Chr(51)||Chr(100)||Chr(97)||Chr(57)||Chr(48)||Chr(53)||Chr(101)||Chr(99)||Chr(101)||Chr(101)

结果为127

0 0