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Hacking Vulnerable Vsftpd FTP server

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www.hackercomputerschool.com In the previous howto, we saw how information about the services running in the target system can help us in researching about them and finding vulnerabilities in those software. For example, imagine I am a black hat who performed a Nmap scan on the target (in this case, Metasploitable). The target has displayed so many banners of the services running. Let us see if we can try out the FTP service at port 21 to get access to the system. Since I am a black hat, assume I have not performed any automated vulnerability scan. Following the process shown in the last howto, I google about vsftpd 2.3.4. I got a lot of information about the FTP service at port 21. Vsftpd stands for very secure FTP daemon and the present version installed on Metasploitable 2 (1.e 2.3.4) has a backdoor installed inside it. It seems somebody uploaded a backdoor installed Vsftpd daemon to the site. This malicious version of vsftpd was available on the master site between June 30th 2011…