Tradecraft Security Weekly

This is the Hacker Summer Camp 2018 edition of Tradecraft Security Weekly. In this week's episode Beau Bullock (@dafthack) talks about some of the more interesting items he saw come out of the Black Hat and DEF CON conferences this year. For Show Links: https://wiki.securityweekly.com/TS_Episode28

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Organizations are implementing two-factor on more and more web services. The traditional methods for phishing credentials is no longer good enough to gain access to user accounts if 2FA is setup. In this episode Mike Felch (@ustayready) and Beau Bullock (@dafthack) demonstrate a tool that Mike wrote called CredSniper that assists in cloning portals for harvesting two-factor tokens. Links: https://github.com/ustayready/CredSniper

In this episode of Tradecraft Security Weekly hosts Beau Bullock (@dafthack) and Mike Felch (@ustayready) discuss methods for evading network-based detection mechanisms. Many commercial IDS/IPS devices do a pretty decent job of detecting standard pentesting tools like Nmap when no evasion options are used. Additionally, companies are doing a better job at detecting and blocking IP addresses performing password attacks. Proxycannon is a tool that allows pentesters to spin up multiple servers to proxy attempts through to bypass some of these detection mechanisms. Links: Nmap Evasion Options - https://nmap.org/book/man-bypass-firewalls-ids.html ProxyCannon - https://www.shellntel.com/blog/2016/1/14/update-to-proxycannon

It is fairly common for pentesters to discover Cross-Site Scripting (XSS) vulnerabilities on web application assessments. Exploiting these issues potentially allow access to a user's session tokens enabling attackers to navigate a site as the victim in the context of the web application. In this episode the hosts Beau Bullock (@dafthack) & Mike Felch (@ustayready) demonstrate how to exploit a XSS vulnerability to access HTML5 local storage to steal a cookie. (Sorry the camera video feed froze at 9 minutes)

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In this episode of Tradecraft Security Weekly, Mike Felch discusses with Beau Bullock about the possibilities of using framesets in MS Office documents to send Windows password hashes remotely across the Internet. This technique has the ability to bypass many common security controls so add it to your red team toolboxes. Mike Felch (@ustayready) Beau Bullock (@dafthack) LINKS: SensePost Blog - https://www.dropbox.com/s/hmna48mc6qodlrw/TSW%20Episode%2021.mp4?dl=0

Domain fronting is a technique used to mask command and control (C2) traffic. It is possible for C2 channels to be proxied through CDN's like Cloudfront to make it appear like normal Internet traffic. It is very difficult to detect and block for defenders as it appears as if clients on a network are connecting to valid CDN domains. But, in reality it is transporting a command and control channel. In this episode of Tradecraft Security Weekly Beau Bullock (@dafthack) is joined by Ralph May (@ralphte1) to talk about what domain fronting is and how to set it up using Cloudfront and PowerShell Empire. LINKS: https://blog.cobaltstrike.com/2017/02/06/high-reputation-redirectors-and-domain-fronting/ https://signal.org/blog/doodles-stickers-censorship/ https://www.securityartwork.es/2017/01/24/camouflage-at-encryption-layer-domain-fronting/ https://trac.torproject.org/projects/tor/wiki/doc/meek http://bryceboe.com/2012/03/12/bypassing-gogos-inflight-internet-authentication/ Full Show No

If you are a penetration tester password cracking is something you will inevitably do. On most engagements we typically don't have months on end to crack passwords. In an effort to help be more efficient in your cracking techniques Beau Bullock (@dafthack) describes various ways to streamline your approach to cracking in episode 17 of Tradecraft Security Weekly. LINKS: Beau's blog post on password cracking - http://www.dafthack.com/blog/howtocrackpasswordhashesefficiently Hashcat Hash Examples - https://hashcat.net/wiki/doku.php?id=example_hashes