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SSL Man-in-the-Middle
  Attacks with Dsniff


Rochester OWASP & ISSA Chapters
          Ralph Durkee
     Durkee Consulting, Inc.
           rd@rd1.net
Ralph Durkee Background
Founder of Durkee Consulting since 1996
Founder of Rochester OWASP since 2004
President of Rochester ISSA chapter
SANS Instructor and course developer
Application Security, development, auditing, PCI
compliance, pen testing and consulting
CIS (Center for Internet Security) – development of
benchmark security standards – Apache, Linux, BIND
DNS, OpenLDAP, FreeRadius, Unix, FreeBSD
Rochester Area Security Consulting, Ethical Hacking
and Auditing
                         Hacking Trends
                © 2005-2010 Durkee Consulting, Inc.   2
dsniff- Suite of MITM tools
MITM = Man-in-the-Middle
Includes :
   dsniff - password sniffer
   arpspoof – Arp cache poisoning
   macof – flood switch with MAC addresses
   dnsspoof – DNS cache poisoning
   webmitm – HTTP / HTTPS MITM
   tcpkill – Kills TCP connections with RST
   tcpnice - Slows down TCP connection
                            Hacking Trends
                   © 2005-2010 Durkee Consulting, Inc.   3
More dsniff tools
Also includes :
  filesnarf – graps files from NFS traffic
  mailsnarf – grabs emails from SMTP and POP3 traffic
  msgsnarf - grabs messages from IM traffic
      (AIM, ICQ, IRC, MSN, Yahoo)
  urlsnarf – grabs URLS from HTTP traffic
  webspy – sends sniffed URL’s from HTTP to local
  browser to spy on web traffic
  sshmitm – MITM on SSHv1 captures ssh passwords.

                           Hacking Trends
                  © 2005-2010 Durkee Consulting, Inc.   4
Resources - Rochester Non-Profit
  Groups & Events
OWASP Rochester Chapter Information
http://www.OWASP.org/rochester

Rochester Security Summit Oct 20-21, 2010
htttp://RochesterSecurity.org

Rochester ISSA Chapter
http://RochISSA.org
                        Hacking Trends
               © 2005-2010 Durkee Consulting, Inc.   5
On-Line Resources
Dug Song’s dsniff
   http://monkey.org/~dugsong/dsniff/
OWASP - Open Web Application Security Project
   http://www.owasp.org/
OWASP Testing SSL
http://www.owasp.org/index.php/Testing_for_SSL-
   TLS_%28OWASP-CM-001%29



                           Hacking Trends
                  © 2005-2010 Durkee Consulting, Inc.   6
Thank You!


Rochester ISSA & OWASP Chapters
           Ralph Durkee
     Durkee Consulting, Inc.
            rd@rd1.net

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Ralph durkee ssl_mitm_v1

  • 1. SSL Man-in-the-Middle Attacks with Dsniff Rochester OWASP & ISSA Chapters Ralph Durkee Durkee Consulting, Inc. rd@rd1.net
  • 2. Ralph Durkee Background Founder of Durkee Consulting since 1996 Founder of Rochester OWASP since 2004 President of Rochester ISSA chapter SANS Instructor and course developer Application Security, development, auditing, PCI compliance, pen testing and consulting CIS (Center for Internet Security) – development of benchmark security standards – Apache, Linux, BIND DNS, OpenLDAP, FreeRadius, Unix, FreeBSD Rochester Area Security Consulting, Ethical Hacking and Auditing Hacking Trends © 2005-2010 Durkee Consulting, Inc. 2
  • 3. dsniff- Suite of MITM tools MITM = Man-in-the-Middle Includes : dsniff - password sniffer arpspoof – Arp cache poisoning macof – flood switch with MAC addresses dnsspoof – DNS cache poisoning webmitm – HTTP / HTTPS MITM tcpkill – Kills TCP connections with RST tcpnice - Slows down TCP connection Hacking Trends © 2005-2010 Durkee Consulting, Inc. 3
  • 4. More dsniff tools Also includes : filesnarf – graps files from NFS traffic mailsnarf – grabs emails from SMTP and POP3 traffic msgsnarf - grabs messages from IM traffic (AIM, ICQ, IRC, MSN, Yahoo) urlsnarf – grabs URLS from HTTP traffic webspy – sends sniffed URL’s from HTTP to local browser to spy on web traffic sshmitm – MITM on SSHv1 captures ssh passwords. Hacking Trends © 2005-2010 Durkee Consulting, Inc. 4
  • 5. Resources - Rochester Non-Profit Groups & Events OWASP Rochester Chapter Information http://www.OWASP.org/rochester Rochester Security Summit Oct 20-21, 2010 htttp://RochesterSecurity.org Rochester ISSA Chapter http://RochISSA.org Hacking Trends © 2005-2010 Durkee Consulting, Inc. 5
  • 6. On-Line Resources Dug Song’s dsniff http://monkey.org/~dugsong/dsniff/ OWASP - Open Web Application Security Project http://www.owasp.org/ OWASP Testing SSL http://www.owasp.org/index.php/Testing_for_SSL- TLS_%28OWASP-CM-001%29 Hacking Trends © 2005-2010 Durkee Consulting, Inc. 6
  • 7. Thank You! Rochester ISSA & OWASP Chapters Ralph Durkee Durkee Consulting, Inc. rd@rd1.net