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. The alias is an alternate name that can be used to reference an object or element. 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. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1013 [STATUS] 29.00 tries/min, 29 tries in 00:01h, 787 todo in 00:28h S-1-5-21-1835020781-2383529660-3657267081-1009 LEWISFAMILY\tty (2) To begin the enumeration, a connection needs to be established. Using rpcclient we can enumerate usernames on those OS's just like a windows OS. 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. These commands can enumerate the users and groups in a domain. Example output is long, but some highlights to look for: ngrep is a neat tool to grep on network data. In other words - it's possible to enumerate AD (or create/delete AD users, etc.) exit takes care of any password request that might pop up, since were checking for null login. New Folder (9) D 0 Sun Dec 13 05:26:59 2015 | References: getdcname Get trusted DC name rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1003 If you get credentials, you can re-run to show new access: nmap --script smb-enum-shares -p 139,445 [ip]. The next command that can be used via rpcclient is querydominfo. great when smbclient doesnt work It can be enumerated through rpcclient using the lsaenumsid command. | Current user access: | Comment: Remote Admin rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1007 A Mind Map about OSCP Guide submitted by Rikunj Sindhwad on Jun 12, 2021. RPC or Remote Procedure Call is a service that helps establish and maintain communication between different Windows Applications. -V, --version Print version, Connection options: D 0 Thu Sep 27 16:26:00 2018 CTF solutions, malware analysis, home lab development, Looking up status of [ip] In the demonstration, a user hacker is created with the help of a createdomuser and then a password is provided to it using the setuserinfo2 command. SANS Penetration Testing | Plundering Windows Account Info via |_ https://technet.microsoft.com/en-us/library/security/ms06-025.aspx The command to be used to delete a group using deletedomgroup. result was NT_STATUS_NONE_MAPPED This is an enumeration cheat sheet that I created while pursuing the OSCP. -W, --workgroup=WORKGROUP Set the workgroup name If you're having trouble getting the version from the usual methods, you might have to use wireshark or tcpdump to inspect the packets. | Anonymous access: See the below example gif. Once proxychains are configured, the attacker can start enumerating the AD environment through the beacon like so: Moving on, same way, they can query info about specific AD users: Enumerate current user's privileges and many more (consult rpcclient for all available commands): Finally, of course they can run nmap if needed: Impacket provides even more tools to enumerate remote systems through compromised boxes. addform Add form getform Get form SegFault:~ cg$rpcclient -U "" 192.168.182.36 A tag already exists with the provided branch name. Manh-Dung Nguyen - OSCP Enumeration - GitHub Pages 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. lsalookupprivvalue Get a privilege value given its name OSCP Guide | Rikunj Sindhwad - Xmind S-1-5-21-1835020781-2383529660-3657267081-1003 LEWISFAMILY\daemon (2) authentication On most Linuxes, we have tab auto-complete of commands, which extends into rpcclient commands. result was NT_STATUS_NONE_MAPPED S-1-5-21-1835020781-2383529660-3657267081-1005 LEWISFAMILY\kmem (2) result was NT_STATUS_NONE_MAPPED OSCP/oscp-cheatsheet.md at master tagnullde/OSCP GitHub getdompwinfo Retrieve domain password info Custom wordlist. 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. Active Directory & Kerberos Abuse. server type : 0x9a03. This command helps the attacker enumerate the security objects or permissions and privileges related to the security as demonstrated below. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-502 -d, --debuglevel=DEBUGLEVEL Set debug level In this communication, the child process can make requests from a parent process. result was NT_STATUS_NONE_MAPPED NETLOGON SMB enumeration : oscp - Reddit WARNING: Restorefile (./hydra.restore) from a previous session found, to prevent overwriting, you have 10 seconds to abort SaPrintOp 0:65283 (0x0:0xff03). Running something like ngrep -i -d tap0 's.?a.?m.?b.?a. Server Message Block in modern language is also known as Common Internet File System. For this particular demonstration, we will first need a SID. netremotetod Fetch remote time of day
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