- Exploit DB: An archive of exploits and vulnerable software by Offensive Security. The site collects exploits from submissions and mailing lists and concentrates them in a single database.
- Hacked Gadgets: A resource for DIY project documentation as well as general gadget and technology news.
- SecTools.Org: List of 75 security tools based on a 2003 vote by hackers.
- Phrack Magazine: Digital hacking magazine.
- The Hacker News: The Hacker News — most trusted and widely-acknowledged online cyber security news magazine with in-depth technical coverage for cybersecurity.
- NFOHump: Offers up-to-date .NFO files and reviews on the latest pirate software releases.
- HackRead: HackRead is a News Platform that centers on InfoSec, Cyber Crime, Privacy, Surveillance, and Hacking News with full-scale reviews on Social Media Platforms.
- Metasploit: Find security issues, verify vulnerability mitigations & manage security assessments with Metasploit. Get the worlds best penetration testing software now.
- Packet Storm: Information Security Services, News, Files, Tools, Exploits, Advisories and Whitepapers.
- SecurityFocus: Provides security information to all members of the security community, from end users, security hobbyists and network administrators to security consultants, IT Managers, CIOs and CSOs.
- KitPloit: Leading source of Security Tools, Hacking Tools, CyberSecurity and Network Security.
- Hakin9: E-magazine offering in-depth looks at both attack and defense techniques and concentrates on difficult technical issues.
Ethical hacking : Top 12 best websites to learn hacking
Thousand Ways To Backdoor A Windows Domain (Forest)
When the Kerberos elevation of privilege (CVE-2014-6324 / MS14-068) vulnerability has been made public, the remediation paragraph of the following blog post made some waves:
http://blogs.technet.com/b/srd/archive/2014/11/18/additional-information-about-cve-2014-6324.aspx
"The only way a domain compromise can be remediated with a high level of certainty is a complete rebuild of the domain."
Personally, I agree with this, but .... But whether this is the real solution, I'm not sure. And the same applies to compromised computers. When it has been identified that malware was able to run on the computer (e.g. scheduled scan found the malware), there is no easy way to determine with 100% certainty that there is no rootkit on the computer. Thus rebuilding the computer might be a good thing to consider. For paranoids, use new hardware ;)
But rebuilding a single workstation and rebuilding a whole domain is not on the same complexity level. Rebuilding a domain can take weeks or months (or years, which will never happen, as the business will close before that).
There are countless documented methods to backdoor a computer, but I have never seen a post where someone collects all the methods to backdoor a domain. In the following, I will refer to domain admin, but in reality, I mean Domain Admins, Enterprise Admins, and Schema Admins.
Ok, we are doomed, but what can we do? I recommend proper log analysis, analyze trends, and detect strange patterns in your network. Better spend money on these, than on the domain rebuild. And when you find something, do a proper incident response. And good luck!
http://blogs.technet.com/b/srd/archive/2014/11/18/additional-information-about-cve-2014-6324.aspx
"The only way a domain compromise can be remediated with a high level of certainty is a complete rebuild of the domain."
Personally, I agree with this, but .... But whether this is the real solution, I'm not sure. And the same applies to compromised computers. When it has been identified that malware was able to run on the computer (e.g. scheduled scan found the malware), there is no easy way to determine with 100% certainty that there is no rootkit on the computer. Thus rebuilding the computer might be a good thing to consider. For paranoids, use new hardware ;)
But rebuilding a single workstation and rebuilding a whole domain is not on the same complexity level. Rebuilding a domain can take weeks or months (or years, which will never happen, as the business will close before that).
There are countless documented methods to backdoor a computer, but I have never seen a post where someone collects all the methods to backdoor a domain. In the following, I will refer to domain admin, but in reality, I mean Domain Admins, Enterprise Admins, and Schema Admins.
Ways to backdoor a domain
So here you go, an incomplete list to backdoor a domain:- Create a new domain admin user. Easy to do, easy to detect, easy to remediate
- Dump password hashes. The attacker can either crack those or just pass-the-hash. Since KB2871997, pass-the-hash might be trickier (https://technet.microsoft.com/library/security/2871997), but not impossible. Easy to do, hard to detect, hard to remediate - just think about service user passwords. And during remediation, consider all passwords compromised, even strong ones.
- Logon scripts - modify the logon scripts and add something malicious in it. Almost anything detailed in this post can be added :D
- Use an already available account, and add domain admin privileges to that. Reset its password. Mess with current group memberships - e.g. http://www.exploit-db.com/papers/17167/
- Backdoor any workstation where domain admins login. While remediating workstations, don't forget to clean the roaming profile. The type of backdoor can use different forms: malware, local admin, password (hidden admin with 500 RID), sticky keys, etc.
- Backdoor any domain controller server. For advanced attacks, see Skeleton keys
- Backdoor files on network shares which are commonly used by domain admins by adding malware to commonly used executables - Backdoor factory
- Change ownership/permissions on AD partitions - if you have particular details on how to do this specifically, please comment
- Create a new domain user. Hide admin privileges with SID history. Easy to do, hard to detect, easy to remediate - check Mimikatz experimental for addsid
- Golden tickets - easy to do, hard to detect, medium remediation
- Silver tickets - easy to do, hard to detect, medium/hard remediation
- Backdoor workstations/servers via group policy
- HKEY_LOCAL_MACHINE\ Software\ Microsoft\ Windows\ CurrentVersion\ RunOnce,
- scheduled tasks (run task 2 years later),
- sticky-keys with debug
- Backdoor patch management tool, see slides here
[Update 2017.01.10]
- Assign SeEnableDelegationPrivilege to a user
- Directory Service Restore Mode (DSRM)
- Malicious Security Support Provider (SSP)
- DSRMv2
- AdminSDHolder
- Edit GPO
Other tricks
The following list does not fit in the previous "instant admin" tips, but still, it can make the attackers life easier if their primary foothold has been disabled:- Backdoor recent backups - and when the backdoor is needed, destroy the files, so the files will be restored from the backdoored backup
- Backdoor the Exchange server - get a copy of emails
- Backdoor workstation/server golden image
- Change permission of logon scripts to allow modification later
- Place malicious symlinks to file shares, collect hashes via SMB auth tries on specified IP address, grab password hashes later
- Backdoor remote admin management e.g. HP iLO - e.g. create new user or steal current password
- Backdoor files e.g. on shares to use in SMB relay
- Backdoor source code of in-house-developed software
- Use any type of sniffed or reused passwords in new attacks, e.g. network admin, firewall admin, VPN admin, AV admin, etc.
- Change the content of the proxy pac file (change browser configuration if necessary), including special exception(s) for a chosen domain(s) to use proxy on malicious IP. Redirect the traffic, enforce authentication, grab password hashes, ???, profit.
- Create high privileged users in applications running with high privileges, e.g. MSSQL, Tomcat, and own the machine, impersonate users, grab their credentials, etc. The typical pentest path made easy.
- Remove patches from servers, change patch policy not to install those patches.
- Steal Windows root/intermediate CA keys
- Weaken AD security by changing group policy (e.g. re-enabling LM-hashes)
- Microsoft Local Administrator Password Solution
- Enroll virtual smart card certificates for domain admins
Forensics
If you have been chosen to remediate a network where attackers gained domain admin privileges, well, you have a lot of things to look for :)
I can recommend two tools which can help you during your investigation:
Lessons learned
But guess what, not all of these problems are solved by rebuilding the AD. One has to rebuild all the computers from scratch as well. Which seems quite impossible. When someone is creating a new AD, it is impossible not to migrate some configuration/data/files from the old domain. And whenever this happens, there is a risk that the new AD will be backdoored as well.Ok, we are doomed, but what can we do? I recommend proper log analysis, analyze trends, and detect strange patterns in your network. Better spend money on these, than on the domain rebuild. And when you find something, do a proper incident response. And good luck!
Ps: Thanks to Andrew, EQ, and Tileo for adding new ideas to this post.
Check out the host backdooring post as well! :)
Check out the host backdooring post as well! :)
DOWNLOAD BLACKMART ANDROID APP – DOWNLOAD PLAYSTORE PAID APPS FREE
Android made endless possibilities for everyone. It introduced a platform where are millions of apps that a user can download and buy depending on their needs. You're thinking about Google PlayStore, yes I am also talking about Google PlayStore. It's categorized app collection depending on every niche of life. Few of them are free and some of them are paid. Most of the paid apps are only charges small cost in between $2 to $8, but few apps are highly costly that make cost over $50 even, which is not possible for every user to buy and get benefit from it. So, here I am sharing a really useful app, that can make every Google PlayStore app for you to download it for free. You can download any paid app that may even cost about $50. It's totally free. Download blackmart Android app and download google play store paid apps freely.
DOWNLOAD BLACKMART ANDROID APP – DOWNLOAD PLAYSTORE PAID APPS FREE
- It's extremely easy to use.
- It has a Multilingual option for a global user experience.
- The app doesn't ask for any payments.
- Capable to download full of downloadable applications.
- Super fast in downloading and installation.
- Pentest Environment
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Administración Remota De Servidores Desde Android
Sería muy util poder administrar todos nuestros servidores desde la palma de la mano.
Sin embargo una shell linux, no es viable en el teclado de un teléfono incluso de un tablet, sobretodo porque hay que escribir muchos símbolos, por ejemplo el guión, y estos teclados están pensados más bien para texto.
Pues bien, de esta necesidad surgió la aplicación SSHControl:
SSHControl
Esta problematica la he solucionado a base de utilizar nevegadores y estructurar los outputs para no acumular excesiva información en la pantalla.
- Navegador de ficheros
- Navegador de procesos
- Navegador de conexiones
- Navegador de logs
- Navegador de drivers de kernel
Esto permite administrar múltiples servidores con un solo dedo :)
Controlar la seguridad de sus servidores ahora es bastante sencillo y ágil, por ejemplo con solo hacer un "tap" encima de un usuario, podemos ver sos procesos asociados, con hacer otro tap en un proceso podemos kilearlo, ver mas info etc ..
Con hacer un tap encima de una apliacción, vemos sus conexiónes, con un tap en una conexión podemos agregar una regla de filtrado en el firewall, etc ..
En la siguiente versión habilitaré la opción de "Custom Commnands", la cual es muy util,
cada administrador o usuario linux, tiene una serie de comandos que repite con mucha frecuencia,
bien pues esta opción permite pre-programar estos comandos habituales, de manera que puedes lanzarlos con un simple tap.
En el roadmap tengo pensadas nuevas funcionalidades muy útiles :)
Aqui os dejo algunas capturas de pantalla:
Related news
Sin embargo una shell linux, no es viable en el teclado de un teléfono incluso de un tablet, sobretodo porque hay que escribir muchos símbolos, por ejemplo el guión, y estos teclados están pensados más bien para texto.
Pues bien, de esta necesidad surgió la aplicación SSHControl:
SSHControl
Esta problematica la he solucionado a base de utilizar nevegadores y estructurar los outputs para no acumular excesiva información en la pantalla.
- Navegador de ficheros
- Navegador de procesos
- Navegador de conexiones
- Navegador de logs
- Navegador de drivers de kernel
Esto permite administrar múltiples servidores con un solo dedo :)
Controlar la seguridad de sus servidores ahora es bastante sencillo y ágil, por ejemplo con solo hacer un "tap" encima de un usuario, podemos ver sos procesos asociados, con hacer otro tap en un proceso podemos kilearlo, ver mas info etc ..
Con hacer un tap encima de una apliacción, vemos sus conexiónes, con un tap en una conexión podemos agregar una regla de filtrado en el firewall, etc ..
En la siguiente versión habilitaré la opción de "Custom Commnands", la cual es muy util,
cada administrador o usuario linux, tiene una serie de comandos que repite con mucha frecuencia,
bien pues esta opción permite pre-programar estos comandos habituales, de manera que puedes lanzarlos con un simple tap.
En el roadmap tengo pensadas nuevas funcionalidades muy útiles :)
Aqui os dejo algunas capturas de pantalla:
Related news
November 2019 Connector
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