CTF题库>Decode

骑猪看日落 2021-11-02 09:04 392阅读 0赞

打开之后是一段 以0x开头的十六进制数字

0x253464253534253435253335253433253661253435253737253464253531253666253738253464253434253637253462253466253534253662253462253464253534253435253738253433253661253435253737253466253531253666253738253464253434253435253462253464253534253435253332253433253661253435253738253464253531253666253738253464253534253535253462253464253534253431253330253433253661253435253737253465253531253666253738253464253661253435253462253466253534253633253462253464253534253435253737253433253661253662253334253433253661253662253333253433253661253435253738253465253431253364253364

我们附上这个工具吧 ！！！converter

之前就分享过

（链接：https://pan.baidu.com/s/1hUGBumreheNF1WsozLS9BQ   
提取码：vwwc ）

大致思路是这样的

Hex to Text ---- Unescape ---- Base64 to Text ---- Dec to Text

也就是

十六进制从转文本，url解码，base64解码，acsii码

过程如下  （先把最前面的0x去掉）

1.先进行十六进制转文本

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70][]

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

2.url解码

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 1][]

得到

MTE5CjEwMQoxMDgKOTkKMTExCjEwOQoxMDEKMTE2CjExMQoxMTUKMTA0CjEwNQoxMjEKOTcKMTEwCjk4Cjk3CjExNA==

3. base64解码

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 2][]

得到 119 101 108 99 111 109 101 116 111 115 104 105 121 97 110 98 97 114

4. 十进制转 ascii码

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 3][]

得到

welcometoshiyanbar

按照格式

ctf\{welcometoshiyanbar\}

提交即可

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70]: /images/20211101/e6a7ed263188464c92f3a7e16ec582a1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 1]: /images/20211101/efcfed06db32405b9a11b17ee424a8e3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 2]: /images/20211101/43f8b990e28b41c48bbfd431405719ab.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 3]: /images/20211101/fbc81cb9ccea4c5cb4bf777df79716c2.png