SSRF Protocol Smuggling in Plaintext Credential Handlers : LDAP

SSRF protocol smuggling involves an attacker injecting one TCP protocol into a dissimilar TCP protocol. A classic example is using gopher i.e. the first protocol to smuggle SMTP i.e. the second protocol: 1 |...

odle: piping security data

I recently published odle which is a Ruby gem and binary that takes XML data from various security tools and outputs their JSON equivalent. The goal is to be 1 simple, 2 fast, and 3 work on many platforms with only one dependency - nokogiri. Below are two examples using odle to convert output fro...

Exploiting CVE-2016-4264 With OXML_XXE

Recently ColdFusion was shown vulnerable to XXE based attacks in OXML documents; CVE-2016-4264. The blog post linked gives an example building the file using python; cool! Its easy to backdoor files in a similar fashion with OXML XXE. The fastest way to do this is using the "Overwrite File inside...

Finding Hosts Using SSL Certificate Organization And Censys

Finding hosts or domain names associated with a company where the domain name does not include the name of the company can sometimes be difficult. There are common ways to do it such as ASN or scope information e.g. bug bounty ToE or IP block. One technique that I use and I am guessing others do ...

Exploiting XXE In File Upload Functionality

Just wanted to post some details from my BH USA 2015 briefing "Exploiting XXE In File Upload Functionality". The youtube video is up: I also gave an updated version of the presentation in November for the Blackhat Webcast Series. It included more file types; PDF, JPG, and GIF. The link is here:...

Exploiting XXE In File Upload Functionality

Just wanted to post some details from my BH USA 2015 briefing "Exploiting XXE In File Upload Functionality". The youtube video is up: I also gave an updated version of the presentation in November for the Blackhat Webcast Series. It included more file types; PDF, JPG, and GIF. The link is here:...

Cloud Metadata URL List

Landed the SSRF Cloud Metadata technique in a few different scenarios recently. If you havent seen the talk BHUSA 2014 - Bringing a Machete to the Amazon I recommend it. To make life a little easier created a living URL list for Metadata broken down by cloud. There are a few more than he discusse...

Cloud Metadata URL List

Landed the SSRF Cloud Metadata technique in a few different scenarios recently. If you haven't seen the talk BHUSA 2014 - Bringing a Machete to the Amazon I recommend it. To make life a little easier created a living URL list for Metadata broken down by cloud. There are a few more than he discuss...

XML Entity Cheatsheet - Updated

An XML Entity testing cheatsheet. This is an updated version with nokogiri tests removed, just XXE notes. XML Declarations: 1 2 | ---|--- Vanilla entity test: 1 | &post ---|--- SYSTEM entity test xxe: 1 | ---|--- Parameter Entity. One of the benefits is a paremeter entity is automatically expande...

Blackhat 2015 Arsenal

Last month at Blackhat Arsenal 2015, Pete and I @willis presented on Serpico. This was our second time at Arsenal. Yet again, awesome people, great venue, and overall a highlight for me of BH/DC/LV. We got some excellent feedback on the project, so thank you to anyone who stopped by. Last year I...

Simple Ruby Exec with Open and Pipe

I was researching something else and thought this was a cool way to execute a command through the open method in ruby: 1 | open"|CMD" ---|--- The key is starting the open with pipe. For example, 1 | open"|ls" ---|--- Or to exec and print the result in one line: 1 | open"|ls".each |out| puts out...

Simple Ruby Exec with Open and Pipe

I was researching something else and thought this was a cool way to execute a command through the open method in ruby: 1 | open"|CMD" ---|--- The key is starting the open with pipe. For example, 1 | open"|ls" ---|--- Or to exec and print the result in one line: 1 | open"|ls".each |out| puts out...

Exploiting XXE Vulnerabilities in OXML Documents - Part 1

OXML is a common document format; think docx Microsoft Word Document, pptx Microsoft Powerpoint, xlsx Excel Spreadsheet, etc. An OXML document is a zip file containing XML files and any media files. When the document is rendered, the rendering library unzips the document and then parses the...

ldapsearch notes

I seem to find open LDAP servers on the Internet more often than I should. Here are some notes on using ldapsearch Installing ldapsearch on Ubuntu 1 | apt-get install ldap-utils ---|--- Root-DSE object nmap includes a script to gather info from a LDAP root-dse object . We can also use ldapsearch ...

Search all Github Repositories for an Organization

gumbler is a script I wrote to search through git commits and introduced in the blog post "Searching Through Git Commits". Recently I wanted to run Gumbler across all repositories for an organization, the steps are discussed below. First, we need to grab a list of repositories for the ORG. This c...

Searching Through Git Commits

gumbler is a script I wrote to search through git commits. Examples from github are discussed below. .gitignore A gitignore file is used to specify files that should not be tracked by git source gitignore. In the default case, gumbler will read the gitignore file for the project and search every...

Searching Through Git Commits

gumbler is a script I wrote to search through git commits. Examples from github are discussed below. .gitignore A gitignore file is used to specify files that should not be tracked by git source gitignore. In the default case, gumbler will read the gitignore file for the project and search every...

XML Entity Cheatsheet

An XML Entity testing cheatsheet. Testing was done using an older vulnerable version of nokogiri. In IRB you can require previous versions of gems. Certain techniques e.g. XInclude may require additional settings in Nokogiri. XML Headers: 1 2 | ---|--- Vanilla entity test: 1 | ---|--- SYSTEM enti...

XML Entity Cheatsheet

An XML Entity testing cheatsheet. Testing was done using an older vulnerable version of nokogiri. In IRB you can require previous versions of gems. Certain techniques e.g. XInclude may require additional settings in Nokogiri. XML Headers: 1 2 | ---|--- Vanilla entity test: 1 | &post ---|--- SYSTE...

IPv6 DNS Guessing Notes

A hostname with an IPv6 address is stored as a AAAA resource record in DNS see AAAA record. There are many DNS hostname bruteforcing tools, personally I like Fierce. Suppose we have already run our hostname bruteforcing tool against a target domain e.g. facebook.com. Below we use dig to do a AAAA...

IPv6 DNS Guessing Notes

A hostname with an IPv6 address is stored as a AAAA resource record in DNS see AAAA record. There are many DNS hostname bruteforcing tools, personally I like Fierce. Suppose we have already run our hostname bruteforcing tool against a target domain e.g. facebook.com. Below we use dig to do a AAAA...

Blackhat 2014 Arsenal Experience

Last week at Blackhat Arsenal 2014, Pete and I @willis presented on Serpico. Arsenal was a great experience and I would highly recommend to anyone as an attendee or presenter. We got some great feedback on the project, so thank you to anyone who stopped by. Here were the top 3 feature requests an...