lsaaddacctrights Add rights to an account These may indicate whether the share exists and you do not have access to it or the share does not exist at all. *[0-9a-z]' | tr -d '\n' & echo -n "$rhost: " &, echo "exit" | smbclient -L $rhost 1>/dev/null 2>/dev/null. It may be possible that you are restricted to display any shares of the host machine and when you try to list them it appears as if there aren't any shares to connect to. IS~[hostname] <00> - M SeTakeOwnershipPrivilege 0:9 (0x0:0x9) netremotetod Fetch remote time of day There are numerous tools and methods to perform enumeration, we will be finding different types of information on SMB throughout the article. --------- ---- ------- | Disclosure date: 2017-03-14 samdeltas Query Sam Deltas In this communication, the child process can make requests from a parent process. This detail includes the path of the share, remarks, it will indicate if the share has a password for access, it will tell the number of users accessing the share and what kind of access is allowed on the share. The deletedomuser command is used to perform this action. Many groups are created for a specific service. --------------- ---------------------- result was NT_STATUS_NONE_MAPPED Server Message Block in modern language is also known as Common Internet File System. SYSVOL READ ONLY, Enter WORKGROUP\root's password: LSARPC This can be extracted using the lookupnames command used earlier. With some input from the NetSecFocus group, Im building out an SMB enumeration check list here. lookupdomain Lookup Domain Name # lines. When dealing with SMB an attacker is bound to be dealt with the Network Shares on the Domain. getdataex Get printer driver data with keyname It can be done with the help of the createdomuser command with the username that you want to create as a parameter. . 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. In the previous command, we used the getdompwinfo to get the password properties of the domain administrated by the policies. Honor privileges assigned to specific SID? Author: Pavandeep Singhis a Technical Writer, Researcher, and Penetration Tester. samlookupnames Look up names This command can help with the enumeration of the LSA Policy for that particular domain. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1014 --------------- ---------------------- Where the output of the magic script needs to be stored? May need to run a second time for success. SMB allows you to share your resources to other computers over the network, version susceptible to known attacks (Eternal blue , wanna cry), Disabled by default in newer Windows version, reduced "chattiness" of SMB1. This command helps the attacker enumerate the security objects or permissions and privileges related to the security as demonstrated below. What script needs to be executed on the user's login? This is an approach I came up with while researching on offensive security. This is made from the words get domain password information. 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. RPC/SMB/NetBios exploiting tutorials : r/oscp - Reddit SaPrintOp 0:65283 (0x0:0xff03). enumdata Enumerate printer data *', # download everything recursively in the wwwroot share to /usr/share/smbmap. srvinfo Server query info remark: PSC 2170 Series change_trust_pw Change Trust Account Password lsaquery Query info policy Enumerating User Accounts on Linux and Os X With Rpcclient I create my own checklist for the first but very important step: Enumeration. 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" %}. |_smb-vuln-regsvc-dos: ERROR: Script execution failed (use -d to debug) 445/tcp open microsoft-ds It is possible to target the group using the RID that was extracted while running the enumdomgroup. -A, --authentication-file=FILE Get the credentials from a file This will use, as you point out, port 445. Replication READ ONLY Running something like ngrep -i -d tap0 's.?a.?m.?b.?a. 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. | \\[ip]\share: sign Force RPC pipe connections to be signed | IDs: CVE:CVE-2017-0143 shutdownabort Abort Shutdown (over shutdown pipe) . Which script should be executed when the script gets closed? See examples in the previous section. Active Directory & Kerberos Abuse. Null sessions were enabled by default on legacy systems but have been disabled from Windows XP SP2 and Windows Server 2003. path: C:\tmp 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. 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. On other systems, youll find services and applications using port 139. Nmap scan report for [ip] These commands should only be used for educational purposes or authorised testing. deldriverex Delete a printer driver with files addprinter Add a printer If these kinds of features are not enabled on the domain, then it is possible to brute force the credentials on the domain. A collection of commands and tools used for conducting enumeration during my OSCP journey. Test. In the demonstration, it can be observed that the current user has been allocated 35 privileges. (MS)RPC. 139/tcp open netbios-ssn Replication READ ONLY The polices that are applied on a Domain are also dictated by the various group that exists. Query Group Information and Group Membership. 139,445 - Pentesting SMB - HackTricks Usage: rpcclient [OPTION] | \\[ip]\wwwroot: Works well for listing and downloading files, and listing shares and permissions. That command reveals the SIDs for different users on the domain. guest access disabled, uses encryption. | Anonymous access: Using rpcclient it is possible to create a group. lsaenumsid Enumerate the LSA SIDS SRVSVC [+] User SMB session establishd on [ip] | Type: STYPE_DISKTREE 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, . Manh-Dung Nguyen Blog Pentest Publications Whoami @ A tag already exists with the provided branch name. May need to run a second time for success. | Type: STYPE_IPC_HIDDEN | execute arbitrary code via certain crafted "RPC related requests" aka the "RRAS Memory Corruption Vulnerability." Are you sure you want to create this branch? 631 - Internet Printing Protocol (IPP) 873 - Pentesting Rsync. One of the first enumeration commands to be demonstrated here is the srvinfo command. 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. sinkdata Sink data rpcclient is a utility initially developed to test MS-RPC functionality in Samba itself. OSCP notes: ACTIVE INFORMATION GATHERING. to access through Web; FTP to file upload ==> Execute from web == webshell ; Password Checking if you found with other enum. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2002 | Anonymous access: READ dsroledominfo Get Primary Domain Information To explain how this fits in, let's look at the examples below: When an object is created within a domain, the number above (SID) will be combined with a RID to make a unique value used to represent the object. A collection of commands and tools used for conducting enumeration during my OSCP journey. Try "help" to get a list of possible commands. If you're having trouble getting the version from the usual methods, you might have to use wireshark or tcpdump to inspect the packets. To enumerate these shares the attacker can use netshareenum on the rpcclient. In general, the rpcclient can be used to connect to the SMB protocol as well. OSCP Guide | Rikunj Sindhwad - Xmind S-1-5-21-1835020781-2383529660-3657267081-1000 LEWISFAMILY\root (1) The rpcclient was designed to perform debugging and troubleshooting tasks on a Windows Samba configuration. This problem is solved using lookupnames whereupon providing username the SID of that particular user can be extracted with ease. -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 '.' enumdrivers Enumerate installed printer drivers ** (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. setform Set form After establishing the connection, to get the grasp of various commands that can be used you can run the help. rffpcnex Rffpcnex test rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-501 Many system administrators have now written scripts around it to manage Windows NT clients from their UNIX workstation. remark: IPC Service (Mac OS X) Pentesting Cheatsheets - Red Team Notes Learn more about the OS Versions. echoaddone Add one to a number | References: S-1-5-21-1835020781-2383529660-3657267081-1009 LEWISFAMILY\tty (2) OSCP/oscp-cheatsheet.md at master tagnullde/OSCP GitHub You get the idea, was pretty much the same for the Ubuntu guy cept that his user accounts were -3000. result was NT_STATUS_NONE_MAPPED There are multiple methods to connect to a remote RPC service. -O, --socket-options=SOCKETOPTIONS socket options to use --------------- ---------------------- SMB Enumeration (Port 139, 445) - OSCP Notes - GitBook if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! In this specific demonstration, there are a bunch of users that include Administrator, yashika, aarti, raj, Pavan, etc. Server Message Block in modern language is also known as. | Type: STYPE_DISKTREE_HIDDEN rpcclient is a part of the Samba suite on Linux distributions. Next, we have two query-oriented commands. so lets run rpcclient with no options to see whats available: SegFault:~ cg$ rpcclient S-1-5-21-1835020781-2383529660-3657267081-501 LEWISFAMILY\unknown (1) netshareenum Enumerate shares rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-502 SMB - OSCP Playbook ADMIN$ NO ACCESS This group constitutes 7 attributes and 2 users are a member of this group. 1080 - Pentesting Socks. | Comment: | smb-vuln-ms17-010: The next command to observe is the lsaquerysecobj command. great when smbclient doesnt work, Rpcclient is a Linux tool used for executing client-side MS-RPC functions. 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. Protocol_Name: SMB #Protocol Abbreviation if there is one. This can be obtained by running the lsaenumsid command. 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. To extract information about the domain, the attacker can provide the domain name as a parameter to the command lookupdomain as demonstrated. ENUMERATING USER ACCOUNTS ON LINUX AND OS X WITH RPCCLIENT, Hacking Samba on Ubuntu and Installing the Meterpreter. A null session is a connection with a samba or SMB server that does not require authentication with a password. Enumerating Active Directory Using RPCClient - YouTube Guest access disabled by default. . Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Description. Learn offensive CTF training from certcube labs online . MSRPC was originally derived from open source software but has been developed further and copyrighted by . enumforms Enumerate forms It enumerates alias groups on the domain. In the demonstration, it can be observed that the user has stored their credentials in the Description. SANS Penetration Testing | Plundering Windows Account Info via rpcclient $> netshareenum --------- ------- Assumes valid machine account to this domain controller. The below shows a couple of things. This cheat sheet should not be considered to be complete and only represents a snapshot in time when I used these commands for performing enumeration during my OSCP journey. --usage Display brief usage message, Common samba options: This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. | Anonymous access: | Type: STYPE_DISKTREE Disclaimer: These notes are not in the context of any machines I had during the OSCP lab or exam. deleteform Delete form 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. | smb-vuln-ms06-025: CTF solutions, malware analysis, home lab development, Looking up status of [ip] S-1-5-21-1835020781-2383529660-3657267081-1015 LEWISFAMILY\bin (2) . LEWISFAMILY Wk Sv PrQ Unx NT SNT Mac OS X and therefore do not correspond to the rights assigned locally on the server. [hostname] <20> - M rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2001 | VULNERABLE: There are times where these share folders may contain sensitive or Confidential information that can be used to compromise the target. It has undergone several stages of development and stability. | Anonymous access: May need to run a second time for success. [Update 2018-12-02] I just learned about smbmap, which is just great. In the case of queryusergroups, the group will be enumerated. ? At last, it can be verified using the enumdomusers command. [DATA] 1 tasks, 1 servers, 816 login tries (l:1/p:816), ~816 tries per task Metasploit SMB auxiliary scanners. --------------- ---------------------- netfileenum Enumerate open files enumtrust Enumerate trusted domains wwwroot Disk lsalookupprivvalue Get a privilege value given its name Dec 2, 2018, PWK Notes: SMB Enumeration Checklist [Updated]. Password Spraying & Other Fun with RPCCLIENT - Black Hills Information To enumerate the Password Properties on the domain, the getdompwinfo command can be used. share Disk From the demonstration, it can be observed that the domain that is being enumerated is IGNITE. With the free software project, , there is also a solution that enables the use of. lewis S-1-5-21-1835020781-2383529660-3657267081-2002 (User: 1) Cracking Password. Are you sure you want to create this branch? # lines. The child-parent relationship here can also be depicted as client and server relation. REG result was NT_STATUS_NONE_MAPPED NETLOGON READ ONLY The lsaaddacctrights command can be used to add privileges to a user based on their SID. DFS queryaliasmem Query alias membership All this can be observed in the usage of the lsaenumprivaccount command. lsaenumprivsaccount Enumerate the privileges of an SID search type:exploit platform:windows target:2008 smb, domain.local/USERNAME%754d87d42adabcca32bdb34a876cbffb --pw-nt-hash, #You can use querydispinfo and enumdomusers to query user information, /usr/share/doc/python3-impacket/examples/samrdump.py, /usr/share/doc/python3-impacket/examples/rpcdump.py, # This info should already being gathered from enum4linux and enum4linux-ng, In file browser window (nautilus, thunar, etc), It is always recommended to look if you can access to anything, if you don't have credentials try using, #If you omit the pwd, it will be prompted. debuglevel Set debug level dsenumdomtrusts Enumerate all trusted domains in an AD forest When provided with the username to the samlookupnames command, it can extract the RID of that particular user. Using lookupnames we can get the SID. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2370 Chapter 2 - Recon & Enumeration - oscp S-1-5-21-1835020781-2383529660-3657267081-500 LEWISFAMILY\Administrator (1) See the below example gif. A Little Guide to SMB Enumeration - Hacking Articles with a RID:[0x457] Hex 0x457 would = decimal. After verifying that the privilege was added using the lsaenumprivaccount command, we removed the privileges from the user using the lsaremoveacctrights command. lookupsids Convert SIDs to names result was NT_STATUS_NONE_MAPPED querydominfo Query domain info Similarly to enumerate the Primary Domain Information such as the Role of the machine, Native more of the Domain can be done using the dsroledominfo command 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 . SPOOLSS great when smbclient doesnt work, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -x whoami # no work, smbmap -R $sharename -H $ip -A $fileyouwanttodownload -q, # 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.
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