21.滑稽
https://ctf.bugku.com/challenges/detail/id/68.html
http://114.67.175.224:15724/
F12查看源码
22.计算器
https://ctf.bugku.com/challenges/detail/id/69.html
http://114.67.175.224:11149/
23.GET
https://ctf.bugku.com/challenges/detail/id/70.html
$what=$_GET['what'];
echo $what;
if($what=='flag')
echo 'flag{****}';
http://114.67.175.224:17918/?what=flag
24.POST
https://ctf.bugku.com/challenges/detail/id/71.html
$what=$_POST['what'];
echo $what;
if($what=='flag')
echo 'flag{****}';
25.矛盾
https://ctf.bugku.com/challenges/detail/id/72.html
$num=$_GET['num'];
if(!is_numeric($num))
{
echo $num;
if($num==1)
echo 'flag{**********}';
}
考察php弱类型
http://114.67.175.224:10220/?num=1e
原文始发于微信公众号(利刃信安攻防实验室):【小白教程】CTF从入门到入门-05
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