时间：2017.9.26
题目链接：www.shiyanbar.com/ctf/1831
题目大意：0x253464253534253435253335253433253661253435253737253464253531253666253738253464253434253637253462253466253534253662253462253464253534253435253738253433253661253435253737253466253531253666253738253464253434253435253462253464253534253435253332253433253661253435253738253464253531253666253738253464253534253535253462253464253534253431253330253433253661253435253737253465253531253666253738253464253661253435253462253466253534253633253462253464253534253435253737253433253661253662253334253433253661253662253333253433253661253435253738253465253431253364253364
解题思路：
1） 看到开头的0x知道这是16进制，在网上找16进制转字符的网站，得到 %4d%54%45%35%43%6a%45%77%4d%51%6f%78%4d%44%67%4b%4f%54%6b%4b%4d%54%45%78%43%6a%45%77%4f%51%6f%78%4d%44%45%4b%4d%54%45%32%43%6a%45%78%4d%51%6f%78%4d%54%55%4b%4d%54%41%30%43%6a%45%77%4e%51%6f%78%4d%6a%45%4b%4f%54%63%4b%4d%54%45%77%43%6a%6b%34%43%6a%6b%33%43%6a%45%78%4e%41%3d%3d 感觉这像是URL编码
2） 在网上找URL解码网站，得到MTE5CjEwMQoxMDgKOTkKMTExCjEwOQoxMDEKMTE2CjExMQoxMTUKMTA0CjEwNQoxMjEKOTcKMTEwCjk4Cjk3CjExNA== 感觉这像是base64编码
3） 我用的是火狐浏览器自带的base64解码，得到一连串的数字，如下 119 101 108 99 111 109 101 116 111 115 104 105 121 97 110 98 97 114
4） 感觉这是ascii码，对照ascii表，得到答案 welcometoshiyanbar
