rpcclient enumeration oscp

. The ability to manipulate a user doesnt end with creating a user or changing the password of a user. | Type: STYPE_DISKTREE_HIDDEN WARNING: Restorefile (./hydra.restore) from a previous session found, to prevent overwriting, you have 10 seconds to abort The below shows a couple of things. Custom wordlist. lewis S-1-5-21-1835020781-2383529660-3657267081-2002 (User: 1) To extract information about the domain, the attacker can provide the domain name as a parameter to the command lookupdomain as demonstrated. Can try without a password (or sending a blank password) and still potentially connect. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2001 Hashes work. queryuseraliases Query user aliases querydispinfo Query display info When provided with the username to the samlookupnames command, it can extract the RID of that particular user. Nice! To enumerate the Password Properties on the domain, the getdompwinfo command can be used. It can be done with the help of the createdomuser command with the username that you want to create as a parameter. |_ https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/ netshareenum Enumerate shares enumkey Enumerate printer keys After the user details and the group details, another information that can help an attacker that has retained the initial foothold on the domain is the Privileges. This can be extracted using the lookupnames command used earlier. SQL Injection & XSS Playground. enumdomusers Enumerate domain users The next command that can be used via rpcclient is querydominfo. Running something like ngrep -i -d tap0 's.?a.?m.?b.?a. | Type: STYPE_DISKTREE_HIDDEN rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1001 rpcclient $> queryuser msfadmin. This command was able to enumerate two specific privileges such as SeChangeNotiftyPrivielge and SeNetworkLogonRight privilege. logonctrl2 Logon Control 2 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 D 0 Thu Sep 27 16:26:00 2018 logonctrl Logon Control In the demonstration presented, there are two domains: IGNITE and Builtin. Code & Process Injection. The system operates as an application-layer network protocol primarily used for offering shared access to files, printers, serial ports, and other sorts of communications between nodes on a network. This means that SMB is running with NetBIOS over TCP/IP**. Where the output of the magic script needs to be stored? Disclaimer: These notes are not in the context of any machines I had during the OSCP lab or exam. DFS rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 LSARPC It is also possible to add and remove privileges to a specific user as well. It has undergone several stages of development and stability. In this communication, the child process can make requests from a parent process. Enumerating User Accounts on Linux and Os X With Rpcclient echoaddone Add one to a number To explain how this fits in, let's look at the examples below: When an object is created within a domain, the number above (SID) will be combined with a RID to make a unique value used to represent the object. [+] 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. result was NT_STATUS_NONE_MAPPED maybe brute-force ; 22/SSH. [+] IP: [ip]:445 Name: [ip] The group information helps the attacker to plan their way to the Administrator or elevated access. -?, --help Show this help message To enumerate a particular user from rpcclient, the queryuser command must be used. 1026 - Pentesting Rusersd. This command is made from LSA Query Security Object. NETLOGON NO ACCESS MAC Address: 00:50:56:XX:XX:XX (VMware) SPOOLSS # lines. The name is derived from the enumeration of domain groups. It is possible to perform enumeration regarding the privileges for a group or a user based on their SID as well. -N, --no-pass Don't ask for a password | A buffer overflow vulnerability in the Routing and Remote Access service (RRAS) in Microsoft Windows 2000 SP4, XP SP1 . Are you sure you want to create this branch? SMB Enumeration (Port 139, 445) - OSCP Notes - GitBook smbclient (null session) enum4linux. -A, --authentication-file=FILE Get the credentials from a file dsroledominfo Get Primary Domain Information remark: IPC Service (Mac OS X) great when smbclient doesnt work, Rpcclient is a Linux tool used for executing client-side MS-RPC functions. However, for this particular demonstration, we are using rpcclient. IPC$ NO ACCESS Software applications that run on a NetBIOS network locate and identify each other via their NetBIOS names. The ability to enumerate individually doesnt limit to the groups but also extends to the users. If you're having trouble getting the version from the usual methods, you might have to use wireshark or tcpdump to inspect the packets. | Remote Code Execution vulnerability in Microsoft SMBv1 servers (ms17-010) SaPrintOp 0:65283 (0x0:0xff03). Are there any resources out there that go in-depth about SMB enumeration? --------------- ---------------------- Nmap done: 1 IP address (1 host up) scanned in 5.58 seconds, # Requires root or enough permissions to use tcpdump, # Will listen for the first 7 packets of a null login, # Will sometimes not capture or will print multiple. SMB enumeration : oscp - Reddit As with the lsaenumsid, it was possible to extract the SID but it was not possible to tell which user has that SID. It is possible to enumerate the minimum password length and the enforcement of complex password rules. Use `proxychains + command" to use the socks proxy. rewardone in the PWK forums posted a neat script to easily get Samba versions: When you run this on a box running Samba, you get results: When in doubt, we can check the smb version in PCAP. The command netsharegetinfo followed by the name of the share you are trying to enumerate will extract details about that particular share. so lets run rpcclient with no options to see what's available: SegFault:~ cg$ rpcclient. SMB allows you to share your resources to other computers over the network, version susceptible to known attacks (Eternal blue , wanna cry), Disabled by default in newer Windows version, reduced "chattiness" of SMB1. [hostname] <00> - M exit takes care of any password request that might pop up, since were checking for null login. remark: PSC 2170 Series Curious to see if there are any "guides" out there that delve into SMB . # download everything recursively in the wwwroot share to /usr/share/smbmap. [Update 2018-12-02] I just learned about smbmap, which is just great. lsaquerysecobj Query LSA security object This is an enumeration cheat sheet that I created while pursuing the OSCP. --------- ------- The next command to observe is the lsaquerysecobj command. [+] User SMB session establishd on [ip] rpcclient (if 111 is also open) NSE scripts. netname: PSC 2170 Series It is also possible to manipulate the privileges of that SID to make them either vulnerable to a particular privilege or remove the privilege of a user altogether. 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. SHUTDOWN is SMB over Ip. 3. These commands should only be used for educational purposes or authorised testing. enumdomgroups Enumerate domain groups The lsaaddacctrights command can be used to add privileges to a user based on their SID. platform_id : 500 | smb-vuln-ms06-025: addprinter Add a printer This is made from the words get domain password information. {% code-tabs-item title="attacker@cobaltstrike" %}, {% endcode-tabs-item %} | State: VULNERABLE Password attack (Brute-force) Brute-force service password. In the demonstration below, the attacker chooses S-1-1-0 SID to enumerate. Cannot retrieve contributors at this time. My #1 SMB tip: if the exploit you're using fails despite the target appearing vulnerable, reset the machine and try again. We can also check if the user we created has been assigned a SID or not using the lookupnames command on the rpcclient. 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. There are numerous tools and methods to perform enumeration, we will be finding different types of information on SMB throughout the article. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Since we performed enumeration on different users, it is only fair to extend this to various groups as well. 1690825 blocks of size 2048. SYSVOL NO ACCESS, [+] Finding open SMB ports. Code Execution. From the enumdomusers command, it was possible to obtain the users of the domain as well as the RID. lsalookupprivvalue Get a privilege value given its name SeSecurityPrivilege 0:8 (0x0:0x8) echodata Echo data SegFault:~/Documents/Evil cg$ hydra -l lewis -P common-passwords.txt 192.168.182.36 smb -V | Comment: Remote IPC This command retrieves the domain, server, users on the system, and other relevant information. . Using rpcclient we can enumerate usernames on those OS's just like a windows OS. ADMIN$ NO ACCESS Chapter 2 - Recon & Enumeration - oscp Usage: rpcclient [OPTION] and Unix distributions and thus cross-platform communication via SMB. This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1014 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2003 The name is derived from the enumeration of domain users. There are times where these share folders may contain sensitive or Confidential information that can be used to compromise the target. These commands can enumerate the users and groups in a domain. --------------- ---------------------- Red Team Infrastructure. dfsgetinfo Query DFS share info This is newer version of SMB. oncybersec/oscp-enumeration-cheat-sheet - Github setprinterdata Set REG_SZ printer data Windows NT, 2000, and XP (most SMB1) - VULNERABLE: Null Sessions can be created by default Since the user and password-related information is stored inside the SAM file of the Server. ADMIN$ NO ACCESS All rights reserved. NETLOGON --------------- ---------------------- Since we already performed the enumeration of such data before in the article, we will enumerate using enumdomgroup and enumdomusers and the query-oriented commands in this demonstration. . Learn more about the OS Versions. rpcclient -U '%' -N <IP> Web-Enum . Might ask for password. getform Get form It is possible to target the group using the RID that was extracted while running the enumdomgroup. | Anonymous access: Ill include examples, but where I use PWK labs, Ill anonymize the data per their rules. If in the above example the ttl=127, then it is safe to assume (from this information alone) that the host, 10.10.10.10, is a Linux host. This is an enumeration cheat sheet that I created while pursuing the OSCP. . | \\[ip]\wwwroot: To do this first, the attacker needs a SID. lookupdomain Lookup Domain Name [INFO] Reduced number of tasks to 1 (smb does not like parallel connections) 135, 593 - Pentesting MSRPC - HackTricks 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. When provided the username, it extracts information such as the username, Full name, Home Drive, Profile Path, Description, Logon Time, Logoff Time, Password set time, Password Change Frequency, RID, Groups, etc. [Update 2018-12-02] I just learned about smbmap, which is just great. This will attempt to connect to the share. enumforms Enumerate forms A NetBIOS name is up to 16 characters long and usually, separate from the computer name. LSARPC-DS rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1000 | Anonymous access: When used with the builtin parameter, it shows all the built-in groups by their alias names as demonstrated below. *', # download everything recursively in the wwwroot share to /usr/share/smbmap. I found one guy running OS X 10.4 with Samba running and one guy running Ubuntu with Samba running, oh and also one guy running XP SP0/1 vulnerable to DCOM (wont even go down that road). One of the first enumeration commands to be demonstrated here is the srvinfo command. enumprinters Enumerate printers Pentesting Cheatsheets - Red Team Notes

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