rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1003 Windows NT, 2000, and XP (most SMB1) - VULNERABLE: Null Sessions can be created by default Enumerating Windows Domains with rpcclient through SocksProxy As with the lsaenumsid, it was possible to extract the SID but it was not possible to tell which user has that SID. result was NT_STATUS_NONE_MAPPED | VULNERABLE: exit Exit program The ability to enumerate individually doesnt limit to the groups but also extends to the users. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143 This article can serve as a reference for Red Team activists for attacking and enumerating the domain but it can also be helpful for the Blue Team to understand and test the measures applied on the domain to protect the Network and its users. The alias is an alternate name that can be used to reference an object or element. without the likes of: which most likely are monitored by the blue team. SaPrintOp 0:65283 (0x0:0xff03). NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME), # returns NT_STATUS_ACCESS_DENIED or even gives you a session. It can be observed that the os version seems to be 10.0. This means that the attacker can now use proxychains to proxy traffic from their kali box through the beacon to the target (attacker ---> beacon ---> end target). In the demonstration below, the attacker chooses S-1-1-0 SID to enumerate. guest access disabled, uses encryption. GENERAL OPTIONS certcube provides a detailed guide of oscp enumeration with step by step oscp enumeration cheatsheet. See the below example gif. The command netsharegetinfo followed by the name of the share you are trying to enumerate will extract details about that particular share. WORKGROUP <00> - M Double pivot works the same, but you create the 2nd ssh tunnel via proxychains and a different dynamic port. In the demonstration, the user with RID 0x1f4 was enumerated regarding their password properties. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2370 You can indicate which option you prefer to use with the parameter, # Using --exec-method {mmcexec,smbexec,atexec,wmiexec}, via SMB) in the victim machine and use it to, it is located on /usr/share/doc/python3-impacket/examples/, #If no password is provided, it will be prompted, Stealthily execute a command shell without touching the disk or running a new service using DCOM via, #You can append to the end of the command a CMD command to be executed, if you dont do that a semi-interactive shell will be prompted, Execute commands via the Task Scheduler (using, https://www.hackingarticles.in/beginners-guide-to-impacket-tool-kit-part-1/, #Get usernames bruteforcing that rids and then try to bruteforce each user name, This attack uses the Responder toolkit to. logonctrl2 Logon Control 2 In the previous command, we used the getdompwinfo to get the password properties of the domain administrated by the policies. ENUMERATING USER ACCOUNTS ON LINUX AND OS X WITH RPCCLIENT, Hacking Samba on Ubuntu and Installing the Meterpreter. My #1 SMB tip: if the exploit you're using fails despite the target appearing vulnerable, reset the machine and try again. Using rpcclient it is possible to create a group. Disk Permissions for all files), recurse: toggles recursion on (default: off), prompt: toggles prompting for filenames off (default: on), mget: copies all files matching the mask from host to client machine, Specially interesting from shares are the files called, by all authenticated users in the domain. lsaenumsid Enumerate the LSA SIDS To look for possible exploits to the SMB version it important to know which version is being used. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-501 [Update 2018-12-02] I just learned about smbmap, which is just great. | Current user access: READ/WRITE This will extend the amount of information about the users and their descriptions. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1013 This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. The TTL drops 1 each time it passes through a router. This is newer version of SMB. srvinfo Server query info | Comment: Remote Admin ADMIN$ NO ACCESS password: if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! To enumerate a particular user from rpcclient, the queryuser command must be used. This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. | \\[ip]\share: RID is a suffix of the long SID in a hexadecimal format. This is an approach I came up with while researching on offensive security. It can be enumerated through rpcclient using the lsaenumsid command. Depending on the user privilege it is possible to change the password using the chgpasswd command. The main application area of the protocol has been the, operating system series in particular, whose network services support SMB in a downward-compatible manner - which means that devices with newer editions can easily communicate with devices that have an older Microsoft operating system installed. Host script results: In the scenarios where there is a possibility of multiple domains in the network, there the attacker can use enumdomains to enumerate all the domains that might be deployed in that network. wwwroot Disk change_trust_pw Change Trust Account Password Learning about various kinds of compromises that can be performed using Mimikatz we know that the SID of a user is the security Identifier that can be used for a lot of elevating privileges and minting tickets attacks. The RPC service works on the RPC protocols that form a low-level inter-process communication between different Applications. I create my own checklist for the first but very important step: Enumeration. Sharename Type Comment deleteform Delete form It is possible to enumerate the minimum password length and the enforcement of complex password rules. remark: PSC 2170 Series The deletedomuser command is used to perform this action. In this lab, it is assumed that the attacker/operator has gained: The below shows a couple of things. Reconnecting with SMB1 for workgroup listing. Since we performed enumeration on different users, it is only fair to extend this to various groups as well. Beyond the enumeration I show here, it will also help enumerate shares that are readable, and can ever execute commands on writable shares. | Remote Code Execution vulnerability in Microsoft SMBv1 servers (ms17-010) OSCP Enumeration Cheat Sheet. In this specific demonstration, there are a bunch of users that include Administrator, yashika, aarti, raj, Pavan, etc. But it is also possible to get the password properties of individual users using the getusrdompwinfo command with the users RID. What permissions must be assigned to the newly created files? During our previous demonstrations, we were able to enumerate the permissions and privileges of users and groups based on the RID of that particular user. Match. Microsoft Remote Procedure Call, also known as a function call or a subroutine call, is a protocol that uses the client-server model in order to allow one program to request service from a program on another computer without having to understand the details of that computer's network. | smb-vuln-ms06-025: One of the first enumeration commands to be demonstrated here is the srvinfo command. to access through Web; FTP to file upload ==> Execute from web == webshell ; Password Checking if you found with other enum. enumprivs Enumerate privileges These may indicate whether the share exists and you do not have access to it or the share does not exist at all. The tool that we will be using for all the enumerations and manipulations will be rpcclient. Further, when the attacker used the same SID as a parameter for lsaenumprivaccount, they were able to enumerate the levels of privileges such as high, low, and attribute. Replication READ ONLY result was NT_STATUS_NONE_MAPPED setdriver Set printer driver After establishing the connection, to get the grasp of various commands that can be used you can run the help. SegFault:~ cg$rpcclient -U "" 192.168.182.36 timeout connecting to 192.168.182.36:445 enumdomgroups Enumerate domain groups Many system administrators have now written scripts around it to manage Windows NT clients from their UNIX workstation. [+] User SMB session establishd on [ip] *[[:digit:]]' port 139 in one terminal and then echo exit | smbclient -L [IP] in another will dump out a bunch of info including the version. queryaliasmem Query alias membership | References: -S, --signing=on|off|required Set the client signing state This command is made from LSA Query Security Object. However, for this particular demonstration, we are using rpcclient. You signed in with another tab or window. Let's see how this works by firstly updating the proxychains config file: Once proxychains are configured, the attacker can start enumerating the AD environment through the beacon like so: proxychains rpcclient 10.0.0.6 -U spotless, Victim (10.0.0.2) is enumerating DC (10.0.0.6) on behalf of attacker (10.0.0.5). If the permissions allow, an attacker can delete a group as well. samlogon Sam Logon In the demonstration presented, there are two domains: IGNITE and Builtin. Learn more about the OS Versions. -i, --scope=SCOPE Use this Netbios scope, Authentication options: dfsadd Add a DFS share ? -V, --version Print version, Connection options: -I, --dest-ip=IP Specify destination IP address, Help options This will attempt to connect to the share. (MS)RPC - OSCP Playbook LSARPC server type : 0x9a03. After the tunnel is up, you can comment out the first socks entry in proxychains config. A collection of commands and tools used for conducting enumeration during my OSCP journey. Impacket, 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query. Once we are connected using a null session we get another set of options: Copyright 2017 pentest.tonyng.net. The name is derived from the enumeration of domain groups. | smb-vuln-ms17-010: Software applications that run on a NetBIOS network locate and identify each other via their NetBIOS names. This lab shows how it is possible to bypass commandline argument logging when enumerating Windows environments, using Cobalt Strike and its socks proxy (or any other post exploitation tool that supports socks proxying). So, it is also a good way to enumerate what kind of services might be running on the server, this can be done using enumdomgroup. May need to run a second time for success. netname: IPC$ REG setprinterdata Set REG_SZ printer data authentication | Anonymous access: This will use, as you point out, port 445. After establishing the connection, to get the grasp of various commands that can be used you can run the help. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1011 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1012 Metasploit SMB auxiliary scanners. SQL Injection & XSS Playground. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. LSARPC-DS shutdownabort Abort Shutdown (over shutdown pipe) dfsenum Enumerate dfs shares addform Add form --------------- ---------------------- At this point in time, if you can use anonymous sessions, then there are some very useful commands within the tool. querygroupmem Query group membership It can be used on the rpcclient shell that was generated to enumerate information about the server.
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