queryusergroups Query user groups Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services. This will extend the amount of information about the users and their descriptions. getdataex Get printer driver data with keyname Disclaimer: These notes are not in the context of any machines I had during the OSCP lab or exam. 139/tcp open netbios-ssn For instance, on Windows, SMB can run directly over TCP/IP without the need for NetBIOS over TCP/IP. | Anonymous access: Code Execution. 794699 blocks available, Starting Nmap 7.70 ( https://nmap.org ) at 2018-09-27 16:37 EDT LEWISFAMILY Wk Sv PrQ Unx NT SNT Mac OS X # 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. "" addprinter Add a printer The next command to demonstrate is lookupsids. It has a total of 67 users. Many system administrators have now written scripts around it to manage Windows NT clients from their UNIX workstation. result was NT_STATUS_NONE_MAPPED Replication READ ONLY Next, we have two query-oriented commands. There was a Forced Logging off on the Server and other important information. The TTL drops 1 each time it passes through a router. This command will show you the shares on the host, as well as your access to them. | Type: STYPE_DISKTREE [+] User SMB session establishd on [ip] enumdrivers Enumerate installed printer drivers This is an approach I came up with while researching on offensive security. Active Directory Enumeration: RPCClient - Hacking Articles The polices that are applied on a Domain are also dictated by the various group that exists. Then the attacker used the SID to enumerate the privileges using the lsaenumacctrights command. change_trust_pw Change Trust Account Password As with the previous commands, the share enumeration command also comes with the feature to target a specific entity. dsroledominfo Get Primary Domain Information What permissions must be assigned to the newly created files? if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! This command can help with the enumeration of the LSA Policy for that particular domain. RPC is built on Microsofts COM and DCOM technologies. When provided with the username to the samlookupnames command, it can extract the RID of that particular user. Hence, the credentials were successfully enumerated and the account can be taken over now. Moving on, same way, they can query info about specific AD users: Enumerate current user's privileges and many more (consult rpcclient for all available commands): Finally, of course they can run nmap if needed: Impacket provides even more tools to enumerate remote systems through compromised boxes. rpcclient - Help - Penetration Test Resource Page | \\[ip]\ADMIN$: Cracking Password. Many groups are created for a specific service. 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. remark: IPC Service (Mac OS X) There are times where these share folders may contain sensitive or Confidential information that can be used to compromise the target. . To extract further information about that user or in case during the other enumeration the attacker comes into the touch of the SID of a user, then they cause to use the lookupsids command to get more information about that particular user. |_ https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/ -k, --kerberos Use kerberos (active directory) These may indicate whether the share exists and you do not have access to it or the share does not exist at all. C$ Disk Default share S-1-5-21-1835020781-2383529660-3657267081-1009 LEWISFAMILY\tty (2) It can be observed that the os version seems to . rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 You signed in with another tab or window. Sharename Type Comment Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Honor privileges assigned to specific SID? great when smbclient doesnt work, Rpcclient is a Linux tool used for executing client-side MS-RPC functions. null session or valid credentials). can be cracked with, For passwordless login, add id_rsa.pub to target's authorized_keys, Add the extracted domain to /etc/hosts and dig again, rpcclient --user="" --command=enumprivs -N 10.10.10.10, rpcdump.py 10.11.1.121 -p 135 | grep ncacn_np // get pipe names, smbclient -L //10.10.10.10 -N // No password (SMB Null session), crackmapexec smb 10.10.10.10 -u '' -p '' --shares, crackmapexec smb 10.10.10.10 -u 'sa' -p '' --shares, crackmapexec smb 10.10.10.10 -u 'sa' -p 'sa' --shares, crackmapexec smb 10.10.10.10 -u '' -p '' --share share_name, crackmapexec smb 192.168.0.115 -u '' -p '' --shares --pass-pol, ncrack -u username -P rockyou.txt -T 5 10.10.10.10 -p smb -v, mount -t cifs "//10.1.1.1/share/" /mnt/wins, mount -t cifs "//10.1.1.1/share/" /mnt/wins -o vers=1.0,user=root,uid=0,gid=0. (MS)RPC. While Port 139 is known technically as NBT over IP, Port 445 is SMB over IP. result was NT_STATUS_NONE_MAPPED rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2002 Another command to use is the enumdomusers. These commands should only be used for educational purposes or authorised testing. lookupnames Convert names to SIDs | \\[ip]\C$: OSCP notes: ACTIVE INFORMATION GATHERING. Double pivot works the same, but you create the 2nd ssh tunnel via proxychains and a different dynamic port. password: rpcclient $> srvinfo |_ https://technet.microsoft.com/en-us/library/security/ms06-025.aspx At this point in time, if you can use anonymous sessions, then there are some very useful commands within the tool. # You will be asked for a password but leave it blank and press enter to continue. In this specific demonstration, there are a bunch of users that include Administrator, yashika, aarti, raj, Pavan, etc. [STATUS] 29.00 tries/min, 29 tries in 00:01h, 787 todo in 00:28h --------------- ---------------------- | State: VULNERABLE The name is derived from the enumeration of domain groups. result was NT_STATUS_NONE_MAPPED The next command to observe is the lsaquerysecobj command. LSARPC GENERAL OPTIONS Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. To look for possible exploits to the SMB version it important to know which version is being used. | Anonymous access: After creating the group, it is possible to see the newly created group using the enumdomgroup command. With some input from the NetSecFocus group, Im building out an SMB enumeration check list here. After verifying that the privilege was added using the lsaenumprivaccount command, we removed the privileges from the user using the lsaremoveacctrights command. result was NT_STATUS_NONE_MAPPED But sometimes these don't yield any interesting results. 1098/1099/1050 - Pentesting Java RMI - RMI-IIOP. {% endcode-tabs %}. -c, --command=COMMANDS Execute semicolon separated cmds Nmap scan report for [ip] method. dfsexist Query DFS support if IPC$ share is enabled , and have anonymous access we can enumerate users through, SAMBA 3.x-4.x # vulnerable to linux/samba/is_known_pipename, SAMBA 3.5.11 # vulnerable to linux/samba/is_known_pipename, good script to use if none of scanner giving version for smb, # 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. Once proxychains are configured, the attacker can start enumerating the AD environment through the beacon like so: 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. | IDs: CVE:CVE-2006-2370 S-1-5-21-1835020781-2383529660-3657267081-1013 LEWISFAMILY\mail (2) After the tunnel is up, you can comment out the first socks entry in proxychains config. My #1 SMB tip: if the exploit you're using fails despite the target appearing vulnerable, reset the machine and try again. server type : 0x9a03. lsaenumsid Enumerate the LSA SIDS rpcclient $> lookupnames root querydispinfo Query display info rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2001 The next command that can help with the enumeration is lsaquery. Learn more about the OS Versions. queryuser Query user info os version : 4.9 samsync Sam Synchronisation The group information helps the attacker to plan their way to the Administrator or elevated access. | State: VULNERABLE It contains contents from other blogs for my quick reference In other words - it's possible to enumerate AD (or create/delete AD users, etc.) When provided the username, it extracts information such as the username, Full name, Home Drive, Profile Path, Description, Logon Time, Logoff Time, Password set time, Password Change Frequency, RID, Groups, etc. | Type: STYPE_IPC_HIDDEN SMB2 Windows Vista SP1 and Windows 2008, nmap -n -v -Pn -p139,445 -sV 192.168.0.101, smbclient -L \\$ip --option='client min protocol=NT1', # if getting error "protocol negotiation failed: NT_STATUS_CONNECTION_DISCONNECTED", # Will list all shares with available permissions, smbmap -u jsmith -p password1 -d workgroup -H 192.168.0.1, nmap --script smb-enum-shares -p 139,445 $ip, smbclient \\\\192.168.1.101\\C$ --option='client min protocol=NT1', smbclient \\\\192.168.1.101\\admin$ -U t-skid, # Connect with valid username and password, smbmap -R $sharename -H $ip -A $fileyouwanttodownload -q, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -s wwwroot -R -A '. timeout connecting to 192.168.182.36:445 Replication READ ONLY This is made from the words get domain password information. This command is made from LSA Query Security Object. If Im missing something, leave a comment. logonctrl2 Logon Control 2 | rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 We can filter on ntlmssp.ntlmv2_response to see NTLMv2 traffic, for example. SMB - OSCP Playbook IPC$ NO ACCESS SMB enumeration : oscp - Reddit To begin the enumeration, a connection needs to be established. oscp pwk enumeration smb nmblookup smbclient rpcclient nmap enum4linux smbmap --------------- ---------------------- dsenumdomtrusts Enumerate all trusted domains in an AD forest As with the lsaenumsid, it was possible to extract the SID but it was not possible to tell which user has that SID. Works well for listing and downloading files, and listing shares and permissions. 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. The alias is an alternate name that can be used to reference an object or element. The ability to enumerate individually doesnt limit to the groups but also extends to the users. It contains contents from other blogs for my quick reference, * nmap -sV --script=vulscan/vulscan.nse (https://securitytrails.com/blog/nmap-vulnerability-scan), masscan -p1-65535,U:1-65535 --rate=1000 10.10.10.x -e tun0 > ports, ports=$(cat ports | awk -F " " '{print $4}' | awk -F "/" '{print $1}' | sort -n | tr '\n' ',' | sed 's/,$//'), nmap -Pn -sC -sV --script=vuln*.nse -p$ports 10.10.10.x -T5 -A, (performs full scan instead of syn-scan to prevent getting flagged by firewalls), From Apache Version to finding Ubuntu version -> ubuntu httpd versions, : Private key that is used for login. getdompwinfo Retrieve domain password info result was NT_STATUS_NONE_MAPPED rffpcnex Rffpcnex test The main application area of the protocol has been the, operating system series in particular, whose network services support SMB in a downward-compatible manner - which means that devices with newer editions can easily communicate with devices that have an older Microsoft operating system installed. lsaquery Query info policy *[0-9a-z]' | tr -d '\n' & echo -n "$rhost: " &, echo "exit" | smbclient -L $rhost 1>/dev/null 2>/dev/null. OSCP-Cheatsheets/enumerating-windows-domains-using-rpcclient - Github Further, when the attacker used the same SID as a parameter for lsaenumprivaccount, they were able to enumerate the levels of privileges such as high, low, and attribute. The system operates as an application-layer network protocol primarily used for offering shared access to files, printers, serial ports, and other sorts of communications between nodes on a network. To enumerate the shares manually you might want to look for responses like NT_STATUS_ACCESS_DENIED and NT_STATUS_BAD_NETWORK_NAME, when using a valid session (e.g. so lets run rpcclient with no options to see whats available: SegFault:~ cg$ rpcclient Second - attacker opens a socks4 proxy on port 7777 on his local kali machine (10.0.0.5) by issuing: 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). 139/tcp open netbios-ssn These privileges can help the attacker plan for elevating privileges on the domain. 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. rpcclient is a utility initially developed to test MS-RPC functionality in Samba itself. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1011 password: enumports Enumerate printer ports 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.
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