PentesterAcademy Vulnerable Servers II Lab Write-Up | metasploit-pivoting Lab Link : https://attackdefense.pentesteracademy.com/challengedetails?cid=1747 Vulnerable Servers II is a lab from PentesterAcademy, which is rated as easy. The lab topology shows two machines which means, there are two targets and the attacker has to perform pivoting in order to hack and get the flag from the target machine. First Select the nearest Server and Click on Run the lab. Once the lab is up, a web based terminal will be opened in the Web Browser. Firstly, check the IP address of the attacking machine. We can see that, there are two interfaces. And as per the instructions, the first target machine should be 192.17.147.3. Let’s perform an Nmap scan of the target. The scan result shows that TCP port 8080 is open and is running an Apache Tomcat webserver/Coyote JSP engine 1.1. Let’s try to connect the webserver using netcat. We can see that the Webserver is running OpenKM, a Document
JSON Web Token (JWT) is a standard for securely transmitting information between parties as a JSON object. This information can be verified and trusted because as it is digitally signed using the public/private keys. In this post, i will be explaining about the JWT and how it can be manipulated to perform certain functions, especially during penetration testing.
Access the website that uses JWT token and open the developer tools in the web-browser to see the JWT token. To decode the token, we can use a handy website https://jwt.io .Copy the token and paste it on the website to decode.You can see the key pair values.
And if you want to generate your own customized JWT token, you can do it in the same way. Create the header and the payload data based on your desired fields. The jwt.io site generates and sign the key using the key-pairs. Then copy the encoded token and re-transmit to the target website to do manipulation.
