2. EC-Council’s Certified Ethical Hacker (CEH) Richard Henson r.henson@worc.ac.uk May 2012

3. Session 1 This will cover: Structure of the course Principles of hacking ethically CEH ethical hackers toolkit and dummy client site “Footprinting” and reconnaissance Scanning networks

4. Certificate of Attendance Certificate achieved through: attending the seminars doing the “lab” exercises

5. CEH qualification Achieved through: certificate of attendance passing the examination (take any time at recognised Pearson or Vue centres) can retake… cost: approx £120

6. Ethical Hacking Principles Hacking is a criminal offence in the UK covered through The Computer Misuse Act (1990) tightened by further legislation (2006) It can only be done ”legally” by a trained (or trainee) professional a computing student would be considered in this context under the law

7. Ethical Hacking principles Even if it legal, doesn’t mean it is ethical! Professionals only hack without permission if there is reason to believe a law is being broken if not… they must ask permission otherwise definitely unethical (and possibly illegal)

8. Ethical Hacking Principles What is “hacking”? breaching a computer system without permission How is it done? using software tools to get through the security of the system also called penetration testing (if done with permission…)

9. Course Toolkit This course provides access to penetration testing tools Also a body of knowledge that shows how to use them… theory: covered by these slides practical: exercises provided; up to you to work through them Together, provide the expertise to penetration test a client’s site Dummy site: http://www.certifiedhacker.comhttp://www.certifiedhacker.com

10. Preparing to use the Toolkit You’ll need to install the following on a computer to do the exercises: Windows 2008 Server (basic os) running Hyper-V Windows 7 (as VM – Virtual Machine) Windows XP (as VM) Windows 2003 Server (as VM) Backtrack and Linux (as VM) All the Windows versions and virtual machine platform are available to download using MSDN Guidance in CEHintro.pdf file

11. Virtualisation (Hyper-V on Windows 2008 Server, Citrix, VMware, etc.) The use of software to allow a piece of hardware to run multiple operating system images at the same time Possible to run Windows OS under Mac OS run multiple versions of Windows OS on the same PC Enables the creation of a “virtual” (rather than actual) version of any software environment on the desktop, e.g. Operating Systems, a server, a storage device or networks, an application

12. What and Why of Footprinting Definition: “Gathering information about a “target” system” Could be Passive (non-penetrative) or active Find out as much information about the digital and physical evidence of the target’s existence as possible need to use multiple sources… may (“black hat” hacking) need to be done secretly

13. What to Gather Domain Names User/Group names System Names IP addresses Employee Details/Company Directory Network protocols used & VPN start/finish Company documents Intrusion detection system used

14. Rationale for “passive” Footprinting Real hacker may be able to gather what they need from public sources organisation needs to know what is “out there” Methodology: start by finding the URL (search engine) e.g. www.worc.ac.uk from main website, find other external-facing names e.g. staffweb.worc.ac.uk

15. Website Connections & History History: use www.archive.org: The Wayback Machine Connections: use robtex.com Business Intelligence: sites that reveal company details e.g. www.companieshouse.co.ukwww.companieshouse.co.uk

16. More Company Information… “Whois” & CheckDNS.com: lookups of IP/DNS combinations details of who owns a domain name details of DNS Zones & subdomains Job hunters websites: e.g. www.reed.co.ukwww.reed.co.uk www.jobsite.co.uk www.totaljobs.com

17. People Information Company information will reveal names Use names in search engines Facebook LinkedIn Google Earth reveals: company location(s)

18. Physical Network Information (“active” footprinting or phishing) External “probing” should be detectable by a good defence system… (could be embarrassing!) e.g. Traceroute: Uses ICMP protocol “echo” no TCP or UDP port reveals names/IP addresses of intelligent hardware: e.g. Routers, Gateways, DMZs

19. Email Footprinting Using the email system to find the organisation’s email names structure “passive” monitor emails sent IP source address structure of name “active” email sending programs : test whether email addresses actually exist test restrictions on attachments

20. Utilizing Google etc. (“passive”) Google: Advanced Search options: Uses [site:] [intitle:] [allintitle:] [inurl:] In each case a search string should follow e.g. “password” Maltego graphical representations of data

21. Network Layers and Hacking Schematic TCP/IP stack interacting at three of the 7 OSI levels (network, transport, application): TELNETFTP NFSDNS SNMP TCP UDP IP SMTP X XX X X X ports

22. TCP & UDP ports Hackers use these to get inside firewalls etc. Essential to know the important ones: 20, 21 ftp80 http389 Ldap 22 ssh88 Kerberos443 https 23 telnet 110 pop3636 Ldap/SSL 25 smtp135 smb 53 dns137-9 NetBIOS 60 tftp161 snmp

23. Reconnaissance/Scanning Three types of scan: Network (already mentioned) identifies active hosts Port send client requests until a suitable active port has been found… Vulnerability assessment of devices for weaknesses that can be exploited

24. Scanning Methodology Check for Live Systems Check for open ports “Banner Grabbing” Scan for vulnerabilities Draw Network diagram(s) Prepare proxies…

25. Now you try it! Download software through MSDN Set up your ethical hacking toolkit Go through lab 1 Gather evidence that you’ve done the lab Bring evidence to the June meeting…