echodata Echo data 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). -O, --socket-options=SOCKETOPTIONS socket options to use | Remote Code Execution vulnerability in Microsoft SMBv1 servers (ms17-010) When used with the builtin parameter, it shows all the built-in groups by their alias names as demonstrated below. MSRPC was originally derived from open source software but has been developed further and copyrighted by . This information includes the Group Name, Description, Attributes, and the number of members in that group. With some input from the NetSecFocus group, Im building out an SMB enumeration check list here. Once we have a SID we can enumerate the rest. setprinter Set printer comment Enumerating User Accounts on Linux and Os X With Rpcclient guest S-1-5-21-1835020781-2383529660-3657267081-1063 (Local Group: 4) rffpcnex Rffpcnex test DFS Some of these commands are based on those executed by the Autorecon tool. netname: PSC 2170 Series IPC$ IPC Remote IPC -?, --help Show this help message This is an enumeration cheat sheet that I created while pursuing the OSCP. rpcclient -U '%' -N <IP> Web-Enum . enumdomusers Enumerate domain users | \\[ip]\ADMIN$: rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1004 | IDs: CVE:CVE-2006-2370 | Risk factor: HIGH After the tunnel is up, you can comment out the first socks entry in proxychains config. seal Force RPC pipe connections to be sealed Code execution don't work. New Folder (9) D 0 Sun Dec 13 05:26:59 2015 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2000 | Anonymous access: It can be used on the rpcclient shell that was generated to enumerate information about the server. ? . 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. deldriver Delete a printer driver The below shows a couple of things. | Current user access: Beyond the enumeration I show here, it will also help enumerate shares that are readable, and can ever execute commands on writable shares. Red Team Infrastructure. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1013 great when smbclient doesnt work, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -x whoami # no work, smbmap -R $sharename -H $ip -A $fileyouwanttodownload -q, # Requires root or enough permissions to use tcpdump, # Will listen for the first 7 packets of a null login, # Will sometimes not capture or will print multiple. | Type: STYPE_DISKTREE It can be observed that the os version seems to be 10.0. [+] IP: [ip]:445 Name: [ip] Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. -k, --kerberos Use kerberos (active directory) Might ask for password. SegFault:~ cg$rpcclient -U "" 192.168.182.36 This can be obtained by running the lsaenumsid command. There are multiple methods to connect to a remote RPC service. These privileges can help the attacker plan for elevating privileges on the domain. | VULNERABLE: NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME), # returns NT_STATUS_ACCESS_DENIED or even gives you a session. Usage: rpcclient [OPTION] For instance, on Windows, SMB can run directly over TCP/IP without the need for NetBIOS over TCP/IP. Cracking Password. Host script results: queryuseraliases Query user aliases 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. lookupnames Convert names to SIDs setdriver Set printer driver certcube provides a detailed guide of oscp enumeration with step by step oscp enumeration cheatsheet. . SMB Enumeration (Port 139, 445) - OSCP Notes - GitBook After enumerating groups, it is possible to extract details about a particular group from the list. The next command to observe is the lsaquerysecobj command. | Current user access: READ/WRITE rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1012 rpcclient - Help - Penetration Test Resource Page Using rpcclient it is possible to create a group. 548 - Pentesting Apple Filing Protocol (AFP) 554,8554 - Pentesting RTSP. . result was NT_STATUS_NONE_MAPPED Example output is long, but some highlights to look for: ngrep is a neat tool to grep on network data. deleteform Delete form Author: Pavandeep Singhis a Technical Writer, Researcher, and Penetration Tester. | and SP2, and Server 2003 SP1 and earlier allows remote unauthenticated or authenticated attackers to setprintername Set printername -U, --user=USERNAME Set the network username During our previous demonstrations, we were able to enumerate the permissions and privileges of users and groups based on the RID of that particular user. There are a couple of machines in the lab that will only work on the first attempt, and . Flashcards. guest access disabled, uses encryption. netname: ADMIN$ SMB enumeration : oscp - Reddit S-1-5-21-1835020781-2383529660-3657267081-1015 LEWISFAMILY\bin (2) Using lookupnames we can get the SID. | Comment: Remote IPC This command can help with the enumeration of the LSA Policy for that particular domain. 1098/1099/1050 - Pentesting Java RMI - RMI-IIOP. {% code-tabs-item title="attacker@cobaltstrike" %}, {% endcode-tabs-item %} When using querygroupmem, it will reveal information about that group member specific to that particular RID. sinkdata Sink data Further, when the attacker used the same SID as a parameter for lsaenumprivaccount, they were able to enumerate the levels of privileges such as high, low, and attribute. 1433 - Pentesting MSSQL - Microsoft SQL Server. A collection of commands and tools used for conducting enumeration during my OSCP journey. [DATA] 1 tasks, 1 servers, 816 login tries (l:1/p:816), ~816 tries per task {% code-tabs-item title="attacker@kali" %}. The manipulation of the groups is not limited to the creation of a group. In the demonstration below, the attacker chooses S-1-1-0 SID to enumerate. S-1-5-21-1835020781-2383529660-3657267081-2002 LEWISFAMILY\user (1) SYSVOL NO ACCESS, [+] Finding open SMB ports. 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. If you get credentials, you can re-run to show new access: nmap --script smb-enum-shares -p 139,445 [ip]. [Update 2018-12-02] I just learned about smbmap, which is just great. path: C:\tmp | grep -oP 'UnixSamba. openprinter Open printer handle May need to run a second time for success. See examples in the previous section. . 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. lsaquery Query info policy 631 - Internet Printing Protocol (IPP) 873 - Pentesting Rsync. | Comment: rpcclient $> lookupnames lewis Cheatsheet. 623/UDP/TCP - IPMI. After manipulating the Privileges on the different users and groups it is possible to enumerate the values of those specific privileges for a particular user using the lsalookupprivvalue command. if IPC$ 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. We will shine the light on the process or methodology for enumerating SMB services on the Target System/Server in this article. SMB - OSCP Playbook getdriver Get print driver information getdata Get print driver data for all files), recurse: toggles recursion on (default: off), prompt: toggles prompting for filenames off (default: on), mget: copies all files matching the mask from host to client machine, Specially interesting from shares are the files called, by all authenticated users in the domain. CTF solutions, malware analysis, home lab development, Looking up status of [ip] That narrows the version that the attacker might be looking at to Windows 10, Windows Server 2016, and Windows Server 2019. |_smb-vuln-ms10-054: false Honor privileges assigned to specific SID? ADMIN$ Disk Remote Admin 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. In the demonstration, it can be observed that the current user has been allocated 35 privileges. SHUTDOWN 1080 - Pentesting Socks. setform Set form But it is also possible to get the password properties of individual users using the getusrdompwinfo command with the users RID. *' # download everything recursively in the wwwroot share to /usr/share/smbmap. In other words - it's possible to enumerate AD (or create/delete AD users, etc.) RPC or Remote Procedure Call is a service that helps establish and maintain communication between different Windows Applications. | Comment: Remote Admin method. lsalookupprivvalue Get a privilege value given its name 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. Thus it might be worth a short to try to manually connect to a share. schannelsign Force RPC pipe connections to be signed (not sealed) with 'schannel' (NETSEC). 135, 593 - Pentesting MSRPC - HackTricks --usage Display brief usage message, Common samba options: SYSVOL READ ONLY, Enter WORKGROUP\root's password: MAC Address: 00:50:56:XX:XX:XX (VMware) During that time, the designers of the rpcclient might be clueless about the importance of this tool as a penetration testing tool. -N, --no-pass Don't ask for a password If these kinds of features are not enabled on the domain, then it is possible to brute force the credentials on the domain. This command was able to enumerate two specific privileges such as SeChangeNotiftyPrivielge and SeNetworkLogonRight privilege. 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). Enumeration - Adithyan's Blog samlogon Sam Logon | IDs: CVE:CVE-2017-0143 Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services . offensive security. Server Comment We can also check if the user we created has been assigned a SID or not using the lookupnames command on the rpcclient. | A critical remote code execution vulnerability exists in Microsoft SMBv1 | 139/tcp open netbios-ssn However, for this particular demonstration, we are using rpcclient. Hashes work. SMB stands for Server Message Blocks. 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. Using rpcclient we can enumerate usernames on those OS's just like a windows OS. After that command was run, rpcclient will give you the most excellent "rpcclient> " prompt. | 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. Server Message Block in modern language is also known as. WORKGROUP <1e> - M Disk Permissions The next command that can help with the enumeration is lsaquery. 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$ports 10.10.10.x -T5 -A, (performs full scan instead of syn-scan to prevent getting flagged by firewalls), From Apache Version to finding Ubuntu version -> ubuntu httpd versions, : Private key that is used for login. My #1 SMB tip: if the exploit you're using fails despite the target appearing vulnerable, reset the machine and try again. oncybersec/oscp-enumeration-cheat-sheet - Github | \\[ip]\C$: It contains contents from other blogs for my quick reference In the demonstration, the user with RID 0x1f4 was enumerated regarding their password properties. REG [hostname] <20> - M (MS)RPC - OSCP Playbook March 8, 2021 by Raj Chandel. What permissions must be assigned to the newly created directories? Software applications that run on a NetBIOS network locate and identify each other via their NetBIOS names. lsaenumprivsaccount Enumerate the privileges of an SID In this specific demonstration, there are a bunch of users that include Administrator, yashika, aarti, raj, Pavan, etc. 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. | Anonymous access: 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. samlookuprids Look up names | smb-enum-shares: IPC$ NO ACCESS |_ Current user access: READ -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 '.' 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. with a RID:[0x457] Hex 0x457 would = decimal. # 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. "" Protocol_Name: SMB #Protocol Abbreviation if there is one. | Type: STYPE_DISKTREE_HIDDEN Disclaimer: These notes are not in the context of any machines I had during the OSCP lab or exam. quit Exit program The RPC service works on the RPC protocols that form a low-level inter-process communication between different Applications. Which script should be executed when the script gets closed? rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1005 I found one guy running OS X 10.4 with Samba running and one guy running Ubuntu with Samba running, oh and also one guy running XP SP0/1 vulnerable to DCOM (wont even go down that road). ---- ----------- As with the lsaenumsid, it was possible to extract the SID but it was not possible to tell which user has that SID. dfsenum Enumerate dfs shares This will attempt to connect to the share. | Comment: In our previous attempt to enumerate SID, we used the lsaenumsid 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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rpcclient enumeration oscp
