However, for this particular demonstration, we are using rpcclient. | https://technet.microsoft.com/en-us/library/security/ms17-010.aspx Example output is long, but some highlights to look for: ngrep is a neat tool to grep on network data. Enum4linux is a Linux alternative to enum.exe and is used to enumerate data from Windows and Samba hosts. netshareenum Enumerate shares 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. setprinterdata Set REG_SZ printer data . Metasploit SMB auxiliary scanners. 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. getdriverdir Get print driver upload directory dfsenum Enumerate dfs shares SQL Injection & XSS Playground. result was NT_STATUS_NONE_MAPPED Common share names for windows targets are, You can try to connect to them by using the following command, # null session to connect to a windows share, # authenticated session to connect to a windows share (you will be prompted for a password), "[+] creating a null session is possible for, # no output if command goes through, thus assuming that a session was created, # echo error message (e.g. # You will be asked for a password but leave it blank and press enter to continue. The tool that we will be using for all the enumerations and manipulations will be rpcclient. Password: so lets run rpcclient with no options to see what's available: SegFault:~ cg$ rpcclient. This will use, as you point out, port 445. It is also possible to add and remove privileges to a specific user as well. If this information does not appear in other used tools, you can: # 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. enumdomgroups Enumerate domain groups --------------- ---------------------- | References: samlookupnames Look up names CTF solutions, malware analysis, home lab development, Looking up status of [ip] Connect to wwwroot share (try blank password), Nmap scans for SMB vulnerabilities (NB: can cause DoS), Enumerate SNMP device (places info in readable format), Enumerate file privileges (see here for discussion of file_priv), Check if current user superuser (on = yes, off = no), Check users privileges over table (pg_shadow). Curious to see if there are any "guides" out there that delve into SMB . lsaenumsid Enumerate the LSA SIDS C$ NO ACCESS | \\[ip]\C$: The enum4linux utility within Kali Linux is particularly useful; with it, you can obtain the following: If you don't know what is NTLM or you want to know how it works and how to abuse it, you will find very interesting this page about. [Original] As Ive been working through PWK/OSCP for the last month, one thing Ive noticed is that enumeration of SMB is tricky, and different tools fail / succeed on different hosts. As with the previous commands, the share enumeration command also comes with the feature to target a specific entity. enumjobs Enumerate print jobs PORT STATE SERVICE Match. [+] IP: [ip]:445 Name: [ip] | and SP2, and Server 2003 SP1 and earlier allows remote unauthenticated or authenticated attackers to # Search the file in recursive mode and download it inside /usr/share/smbmap, #Download everything to current directory, mask: specifies the mask which is used to filter the files within the directory (e.g. "" 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. 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. Initial Access. great when smbclient doesnt work, Rpcclient is a Linux tool used for executing client-side MS-RPC functions. | Type: STYPE_DISKTREE_HIDDEN setform Set form dfsremove Remove a DFS share A tag already exists with the provided branch name. Are you sure you want to create this branch? Checklist - Local Windows Privilege Escalation, Pentesting JDWP - Java Debug Wire Protocol, 161,162,10161,10162/udp - Pentesting SNMP, 515 - Pentesting Line Printer Daemon (LPD), 548 - Pentesting Apple Filing Protocol (AFP), 1098/1099/1050 - Pentesting Java RMI - RMI-IIOP, 1433 - Pentesting MSSQL - Microsoft SQL Server, 1521,1522-1529 - Pentesting Oracle TNS Listener, 2301,2381 - Pentesting Compaq/HP Insight Manager, 3690 - Pentesting Subversion (svn server), 4369 - Pentesting Erlang Port Mapper Daemon (epmd), 8009 - Pentesting Apache JServ Protocol (AJP), 8333,18333,38333,18444 - Pentesting Bitcoin, 9100 - Pentesting Raw Printing (JetDirect, AppSocket, PDL-datastream), 10000 - Pentesting Network Data Management Protocol (ndmp), 24007,24008,24009,49152 - Pentesting GlusterFS, 50030,50060,50070,50075,50090 - Pentesting Hadoop, Reflecting Techniques - PoCs and Polygloths CheatSheet, Dangling Markup - HTML scriptless injection, HTTP Request Smuggling / HTTP Desync Attack, Regular expression Denial of Service - ReDoS, Server Side Inclusion/Edge Side Inclusion Injection, XSLT Server Side Injection (Extensible Stylesheet Languaje Transformations), Pentesting CI/CD (Github, Jenkins, Terraform), Windows Exploiting (Basic Guide - OSCP lvl), INE Courses and eLearnSecurity Certifications Reviews, Stealing Sensitive Information Disclosure from a Web, Enumerate Users, Groups & Logged On Users, Manually enumerate windows shares and connect to them, . We will shine the light on the process or methodology for enumerating SMB services on the Target System/Server in this article. -d, --debuglevel=DEBUGLEVEL Set debug level From the enumdomusers command, it was possible to obtain the users of the domain as well as the RID. 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. | Comment: Remote IPC enumprivs Enumerate privileges enumports Enumerate printer ports To begin the enumeration, a connection needs to be established. But it is also possible to get the password properties of individual users using the getusrdompwinfo command with the users RID. | grep -oP 'UnixSamba. Hydra (http://www.thc.org) starting at 2007-07-27 21:51:46 # lines. If proper privileges are assigned it also possible to delete a user using the rpcclient. Disclaimer: These notes are not in the context of any machines I had during the OSCP lab or exam. To demonstrate this, the attacker first used the lsaaddpriv command to add the SeCreateTokenPrivielge to the SID and then used the lsadelpriv command to remove that privilege from that group as well. The polices that are applied on a Domain are also dictated by the various group that exists. When provided with the username to the samlookupnames command, it can extract the RID of that particular user. 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. MAC Address: 00:50:56:XX:XX:XX (VMware) This is an approach I came up with while researching on offensive security. The command to be used to delete a group using deletedomgroup. 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. --------------- ---------------------- Workgroup Master enumdrivers Enumerate installed printer drivers | Remote Code Execution vulnerability in Microsoft SMBv1 servers (ms17-010) rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1012 enumforms Enumerate forms | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2370 With the free software project, , there is also a solution that enables the use of. This is newer version of SMB. To enumerate the shares manually you might want to look for responses like NT_STATUS_ACCESS_DENIED and NT_STATUS_BAD_NETWORK_NAME, when using a valid session (e.g. For the demonstration here, RID 0x200 was used to find that it belongs to the Domain Admin groups. After manipulating the Privileges on the different users and groups it is possible to enumerate the values of those specific privileges for a particular user using the lsalookupprivvalue command. Enumerating Windows Domains with rpcclient through SocksProxy == Bypassing Command Line Logging 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). RID is a suffix of the long SID in a hexadecimal format. [+] User SMB session establishd on [ip] authentication NETLOGON NO ACCESS | Disclosure date: 2006-6-27 | The article is focused on Red Teamers but Blue Teamers and Purple Teamers can also use these commands to test the security configurations they deployed. This is what happens - attacker (10.0.0.5) uses proxychains with impacket's reg utility to retrieve the hostname of the box at 10.0.0.7 (WS02) via the compromised (CS beacon) box 10.0.0.2 (WS01): The below shows traffic captures that illustrate that the box 10.0.0.2 enumerates 10.0.0.7 using SMB traffic only: Below further proves that the box 10.0.0.2 (WS01 which acted as proxy) did not generate any sysmon logs and the target box 10.0.0.7 (WS02) logged a couple of events, that most likely would not attract much attention from the blue teams: Note how only the SMB traffic between the compromised system and the DC is generated, but no new processes are spawned by the infected dllhost process: {% embed url="https://www.samba.org/samba/docs/current/man-html/rpcclient.1.html" %}, {% embed url="https://github.com/SecureAuthCorp/impacket/tree/master/examples" %}, {% embed url="https://www.cobaltstrike.com/help-socks-proxy-pivoting" %}, {% embed url="https://www.youtube.com/watch?v=l8nkXCOYQC4&index=19&list=WL&t=7s" %}. 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). During that time, the designers of the rpcclient might be clueless about the importance of this tool as a penetration testing tool. While Port 139 is known technically as NBT over IP, Port 445 is SMB over IP. getdriver Get print driver information if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! -P, --machine-pass Use stored machine account password | Anonymous access: