There are a couple of machines in the lab that will only work on the first attempt, and . Enum4linux is a Linux alternative to enum.exe and is used to enumerate data from Windows and Samba hosts. debuglevel Set debug level | Current user access:
rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1006 Enumerating User Accounts on Linux and Os X With Rpcclient ---- ----------- Sharename Type Comment OSCP notes: ACTIVE INFORMATION GATHERING. In the demonstration below, the attacker chooses S-1-1-0 SID to enumerate. | \\[ip]\C$: deleteform Delete form schannel Force RPC pipe connections to be sealed with 'schannel' (NETSEC). rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1003 The alias is an alternate name that can be used to reference an object or element. SMB - OSCP Playbook Copyright 2017 pentest.tonyng.net. It contains contents from other blogs for my quick reference | Type: STYPE_DISKTREE_HIDDEN result was NT_STATUS_NONE_MAPPED S-1-5-21-1835020781-2383529660-3657267081-1013 LEWISFAMILY\mail (2) RPC is built on Microsofts COM and DCOM technologies. sourcedata Source data # lines. SecureAuthCorp/impacket, https://www.cobaltstrike.com/help-socks-proxy-pivoting. deldriver Delete a printer driver For the demonstration here, RID 0x200 was used to find that it belongs to the Domain Admin groups. This information can be elaborated on using the querydispinfo. 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): keyName hklm\system\currentcontrolset\control\computername\computername. If used the RID is the parameter, the samlookuprids command can extract the username relevant to that particular RID. | Type: STYPE_DISKTREE shutdowninit Remote Shutdown (over shutdown pipe) Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services. -S, --signing=on|off|required Set the client signing state Cheatsheet. 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. 445/tcp open microsoft-ds 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. -I, --dest-ip=IP Specify destination IP address, Help options PORT STATE SERVICE With some input from the NetSecFocus group, Im building out an SMB enumeration check list here. ECHO 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. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143 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 . This can be done by providing the Username and Password followed by the target IP address of the server. This article can serve as a reference for Red Team activists for attacking and enumerating the domain but it can also be helpful for the Blue Team to understand and test the measures applied on the domain to protect the Network and its users. 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. Learn more about the OS Versions. schannelsign Force RPC pipe connections to be signed (not sealed) with 'schannel' (NETSEC). | smb-vuln-ms17-010: result was NT_STATUS_NONE_MAPPED Try "help" to get a list of possible commands. result was NT_STATUS_NONE_MAPPED It has a total of 67 users. Password: It can be enumerated through rpcclient using the lsaenumsid command. | \\[ip]\IPC$: *', # download everything recursively in the wwwroot share to /usr/share/smbmap. Adding it to the original post. | State: VULNERABLE The following lists commands that you can issue to SAMR, LSARPC, and LSARPC-DS interfaces upon, # You can also use samrdump.py for this purpose, Enumerate trusted domains within an AD forest. # 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. "" RPC or Remote Procedure Call is a service that helps establish and maintain communication between different Windows Applications. help Get help on commands none Force RPC pipe connections to have no special properties, Lets play with a few options: Beyond the enumeration I show here, it will also help enumerate shares that are readable, and can ever execute commands on writable shares. After creating the users and changing their passwords, its time to manipulate the groups. | IDs: CVE:CVE-2017-0143 querygroupmem Query group membership | lsalookupprivvalue Get a privilege value given its name While having some privileges it is also possible to create a user within the domain using the rpcclient. enumprivs Enumerate privileges This group constitutes 7 attributes and 2 users are a member of this group. Adding it to the original post. This command retrieves the domain, server, users on the system, and other relevant information. Reverse Shell. In this article, we are going to focus on the enumeration of the Domain through the SMB and RPC channels. lsaenumprivsaccount Enumerate the privileges of an SID 631 - Internet Printing Protocol (IPP) 873 - Pentesting Rsync. | Disclosure date: 2006-6-27 NETLOGON NO ACCESS rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1012 |_smb-vuln-ms10-054: false From the enumdomusers command, it was possible to obtain the users of the domain as well as the RID. SRVSVC I create my own checklist for the first but very important step: Enumeration. --------------- ---------------------- Ill include examples, but where I use PWK labs, Ill anonymize the data per their rules. CTF solutions, malware analysis, home lab development, Looking up status of [ip] (MS)RPC. --------------- ---------------------- This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. -s, --configfile=CONFIGFILE Use alternative configuration file In the demonstration, it can be observed that the current user has been allocated 35 privileges. Second - attacker opens a socks4 proxy on port 7777 on his local kali machine (10.0.0.5) by issuing: This means that the attacker can now use proxychains to proxy traffic from their kali box through the beacon to the target (attacker ---> beacon ---> end target). This command can help with the enumeration of the LSA Policy for that particular domain. if IPC$ 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. If you're having trouble getting the version from the usual methods, you might have to use wireshark or tcpdump to inspect the packets. . But sometimes these don't yield any interesting results. Nmap done: 1 IP address (1 host up) scanned in 10.93 seconds. This command is made from LSA Query Security Object. Which script should be executed when the script gets closed? |_ Current user access: READ lookupnames Convert names to SIDs 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. authentication Host script results: Allow listing available shares in the current share? | VULNERABLE: Heres an example Unix Samba 2.2.3a: Windows SMB is more complex than just a version, but looking in wireshark will give a bunch of information about the connection. Enter WORKGROUP\root's password: Start by typing "enum" at the prompt and hitting <tab><tab>: rpcclient $> enum enumalsgroups enumdomains enumdrivers enumkey enumprivs enumdata enumdomgroups enumforms enumports enumtrust enumdataex enumdomusers enumjobs enumprinter. dfsadd Add a DFS share New Folder (9) D 0 Sun Dec 13 05:26:59 2015 SegFault:~ cg$rpcclient -U "" 192.168.182.36 [+] IP: [ip]:445 Name: [ip] | RRAS Memory Corruption vulnerability (MS06-025) A collection of commands and tools used for conducting enumeration during my OSCP journey. SYSVOL NO ACCESS, [+] Finding open SMB ports. password: remark: PSC 2170 Series enumdomgroups Enumerate domain groups | grep -oP 'UnixSamba. You signed in with another tab or window. 139/tcp open netbios-ssn To enumerate these shares the attacker can use netshareenum on the rpcclient. NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME), # returns NT_STATUS_ACCESS_DENIED or even gives you a session. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Hydra v5.1 (c) 2005 by van Hauser / THC - use allowed only for legal purposes. list List available commands on Upon running this on the rpcclient shell, it will extract the usernames with their RID. <03> - M rpcclient $> queryuser msfadmin. guest S-1-5-21-1835020781-2383529660-3657267081-1063 (Local Group: 4) 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. Code execution don't work. 445/tcp open microsoft-ds rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2000 rewardone in the PWK forums posted a neat script to easily get Samba versions: When you run this on a box running Samba, you get results: When in doubt, we can check the smb version in PCAP. This means that the attacker can now use proxychains to proxy traffic from their kali box through the beacon to the target (attacker ---> beacon ---> end target). Test. ADMIN$ Disk Remote Admin os version : 4.9 After establishing the connection, to get the grasp of various commands that can be used you can run the help. smbmap -H [ip/hostname] will show what you can do with given credentials (or null session if no credentials). Active Directory Enumeration: RPCClient - Hacking Articles There are multiple methods to connect to a remote RPC service. One of the first enumeration commands to be demonstrated here is the srvinfo command. This command can be used to extract the details regarding the user that the SID belongs. result was NT_STATUS_NONE_MAPPED netfileenum Enumerate open files It also includes the commands that I used on platforms such as Vulnhub and Hack the Box. After establishing the connection, to get the grasp of various commands that can be used you can run the help. This will extend the amount of information about the users and their descriptions. During our previous demonstrations, we were able to enumerate the permissions and privileges of users and groups based on the RID of that particular user. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2370 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. A tag already exists with the provided branch name. 1098/1099/1050 - Pentesting Java RMI - RMI-IIOP. Can be Contacted onTwitterandLinkedIn, All Rights Reserved 2021 Theme: Prefer by, Windows Privilege Escalation: DnsAdmins to DomainAdmin. 139/tcp open netbios-ssn exit takes care of any password request that might pop up, since were checking for null login. In the case of queryusergroups, the group will be enumerated. to access through Web; FTP to file upload ==> Execute from web == webshell ; Password Checking if you found with other enum. Manh-Dung Nguyen - OSCP Enumeration - GitHub Pages --------------- ---------------------- Running something like ngrep -i -d tap0 's.?a.?m.?b.?a. Two applications start a NetBIOS session when one (the client) sends a command to call another client (the server) over, 139/tcp open netbios-ssn Microsoft Windows netbios-ssn. Assumes valid machine account to this domain controller. --------------- ---------------------- Replication READ ONLY Nmap done: 1 IP address (1 host up) scanned in 5.58 seconds, # 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. 139,445 - Pentesting SMB - HackTricks A null session is a connection with a samba or SMB server that does not require authentication with a password. remark: IPC Service (Mac OS X) | Disclosure date: 2017-03-14 Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. SAMR SaPrintOp 0:65283 (0x0:0xff03). deldriverex Delete a printer driver with files rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-501 The ability to interact with privileges doesnt end with the enumeration regarding the SID or privileges. rffpcnex Rffpcnex test May need to run a second time for success. It is possible to enumerate the minimum password length and the enforcement of complex password rules. 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. Nmap scan report for [ip] 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. samdeltas Query Sam Deltas Are you sure you want to create this branch? In the demonstration, it can be observed that the user has stored their credentials in the Description. The command to be used to delete a group using deletedomgroup. --------------- ---------------------- In the demonstration, it can be observed that the SID that was enumerated belonged to the Administrator of the Builtin users. Hence, the credentials were successfully enumerated and the account can be taken over now. logonctrl Logon Control This is an enumeration cheat sheet that I created while pursuing the OSCP. enumalsgroups Enumerate alias groups [hostname] <00> - M and therefore do not correspond to the rights assigned locally on the server. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2003 The RPC service works on the RPC protocols that form a low-level inter-process communication between different Applications. | account_used: guest OSCP-Cheatsheets/enumerating-windows-domains-using-rpcclient - Github The command netsharegetinfo followed by the name of the share you are trying to enumerate will extract details about that particular share. querydispinfo Query display info Software applications that run on a NetBIOS network locate and identify each other via their NetBIOS names. result was NT_STATUS_NONE_MAPPED This command will show you the shares on the host, as well as your access to them. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2004 1. shutdownabort Abort Shutdown (over shutdown pipe) So, it is also a good way to enumerate what kind of services might be running on the server, this can be done using enumdomgroup. Allow connecting to the service without using a password? seal Force RPC pipe connections to be sealed The name is derived from the enumeration of domain groups. | State: VULNERABLE ADMIN$ NO ACCESS Upon running this on the rpcclient shell, it will extract the groups with their RID. Enumerating Active Directory Using RPCClient - YouTube | Anonymous access: See the below example gif. Enumerating Active Directory Using RPCClientInformation about password levels can be found using this MSDN article.https://docs.microsoft.com/en-us/openspecs. enumforms Enumerate forms result was NT_STATUS_NONE_MAPPED enumdataex Enumerate printer data for a key The next command that can be used is enumalsgroups. setprintername Set printername 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. | smb-vuln-ms06-025: Honor privileges assigned to specific SID? As with the previous commands, the share enumeration command also comes with the feature to target a specific entity. 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. |_smb-vuln-regsvc-dos: ERROR: Script execution failed (use -d to debug) The enum4linux utility within Kali Linux is particularly useful; with it, you can obtain the following: If you don't know what is NTLM or you want to know how it works and how to abuse it, you will find very interesting this page about. S-1-5-21-1835020781-2383529660-3657267081-1001 LEWISFAMILY\wheel (2) In the previous demonstration, the attacker was able to provide and remove privileges to a group. | A critical remote code execution vulnerability exists in Microsoft SMBv1 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1009 getdata Get print driver data MAC Address: 00:50:56:XX:XX:XX (VMware) The manipulation of the groups is not limited to the creation of a group. timeout connecting to 192.168.182.36:445 In this specific demonstration, there are a bunch of users that include Administrator, yashika, aarti, raj, Pavan, etc. [DATA] attacking service smb on port 139 Works well for listing and downloading files, and listing shares and permissions. These commands can enumerate the users and groups in a domain. After that command was run, rpcclient will give you the most excellent "rpcclient> " prompt. and Unix distributions and thus cross-platform communication via SMB. smbclient (null session) enum4linux. Using rpcclient we can enumerate usernames on those OS's just like a windows OS. On other systems, youll find services and applications using port 139. March 8, 2021 by Raj Chandel. Host script results: result was NT_STATUS_NONE_MAPPED --------------- ---------------------- rpcclient - Help - Penetration Test Resource Page The tool that we will be using for all the enumerations and manipulations will be rpcclient. Flashcards. In the scenarios where there is a possibility of multiple domains in the network, there the attacker can use enumdomains to enumerate all the domains that might be deployed in that network. It is possible to target the group using the RID that was extracted while running the enumdomgroup. -P, --machine-pass Use stored machine account password -W, --workgroup=WORKGROUP Set the workgroup name 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. In the demonstration, it can be observed that lsaenumsid has enumerated 20 SIDs within the Local Security Authority or LSA. In our previous attempt to enumerate SID, we used the lsaenumsid command. Shortcut to New Folder (2).lnk A 420 Sun Dec 13 05:24:51 2015 INet~Services <1c> - M This is made from the words get domain password information. Assumes valid machine account to this domain controller. echodata Echo data 1026 - Pentesting Rusersd. | References: | Type: STYPE_IPC_HIDDEN 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. oscp pwk enumeration smb nmblookup smbclient rpcclient nmap enum4linux smbmap The rpcclient was designed to perform debugging and troubleshooting tasks on a Windows Samba configuration. Can try without a password (or sending a blank password) and still potentially connect. The next command to demonstrate is lookupsids. getdispname Get the privilege name Flashcards. Windows NT, 2000, and XP (most SMB1) - VULNERABLE: Null Sessions can be created by default With the free software project, , there is also a solution that enables the use of. This will attempt to connect to the share. Get help on commands 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). 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. This is an enumeration cheat sheet that I created while pursuing the OSCP. *' # download everything recursively in the wwwroot share to /usr/share/smbmap. The name is derived from the enumeration of domain users. How I Won 90 Days OSCP Lab Voucher for Free, https://github.com/s0wr0b1ndef/OSCP-note/, These notes are not in the context of any machines I had during the OSCP lab or exam. --------------- ---------------------- rpcclient $> lookupnames root All rights reserved. Usage: rpcclient [OPTION] S-1-5-21-1835020781-2383529660-3657267081-501 LEWISFAMILY\unknown (1) The SID was retrieved using the lookupnames command. IPC$ IPC Remote IPC The createdomgroup command is to be used to create a group. | Comment: Remote IPC with a RID:[0x457] Hex 0x457 would = decimal. It has undergone several stages of development and stability. S-1-5-21-1835020781-2383529660-3657267081-1000 LEWISFAMILY\root (1) 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. At last, it can be verified using the enumdomusers command. 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, (represented in hexadecimal format) utilized by Windows to.
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