题目地址:http://ctf5.shiyanbar.com/web/10/10.php
![](https://img.haomeiwen.com/i10120543/107a79eb770f4a12.png)
在查看源代码里可以找到参数的提示
![](https://img.haomeiwen.com/i10120543/16c06574a73a92fb.png)
在响应头里可以看到另一个提示
![](https://img.haomeiwen.com/i10120543/b661bd6c6e95b95d.png)
base64解码后可以看到:P0ST_THIS_T0_CH4NGE_FL4G:9d5Gmo11z,post提交后看到
![](https://img.haomeiwen.com/i10120543/c3a5bfffbb10a210.png)
意思应该是让我们用脚本来做,贴上脚本
import requests
import base64
url ="http://ctf5.shiyanbar.com/web/10/10.php"
mys = requests.session()
res = mys.get(url)
data = base64.b64decode(res.headers.get("FLAG")).split(":")[1]
mysdata = {
"key": data,
}
res2 = mys.post(url,data=mysdata)
print res2.content
getflag
the end
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