rpcclient enumeration oscp

enumalsgroups Enumerate alias groups | Anonymous access: The createdomgroup command is to be used to create a group. # lines. From the demonstration, it can be observed that the domain that is being enumerated is IGNITE. For the demonstration here, RID 0x200 was used to find that it belongs to the Domain Admin groups. Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. remark: IPC Service (Mac OS X) without the likes of: which most likely are monitored by the blue team. SQL Injection & XSS Playground. result was NT_STATUS_NONE_MAPPED Many system administrators have now written scripts around it to manage Windows NT clients from their UNIX workstation. <03> - M | Comment: The child-parent relationship here can also be depicted as client and server relation. For this particular demonstration, we will first need a SID. Host script results: NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME), # returns NT_STATUS_ACCESS_DENIED or even gives you a session. setform Set form SeTakeOwnershipPrivilege 0:9 (0x0:0x9) The name is derived from the enumeration of domain users. rpcclient is a part of the Samba suite on Linux distributions. os version : 4.9 There was a Forced Logging off on the Server and other important information. queryuser Query user info certcube provides a detailed guide of oscp enumeration with step by step oscp enumeration cheatsheet. Depending on the user privilege it is possible to change the password using the chgpasswd command. The deletedomuser command is used to perform this action. This can be done by providing the Username and Password followed by the target IP address of the server. sign Force RPC pipe connections to be signed May need to run a second time for success. Red Team Infrastructure. deleteform Delete form Flashcards. Code execution don't work. Enum4linux is a Linux alternative to enum.exe and is used to enumerate data from Windows and Samba hosts. [Original] As I've been working through PWK/OSCP for the last month, one thing I've noticed is that enumeration of SMB is tricky, and different tools . rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-502 RID is a suffix of the long SID in a hexadecimal format. | References: enumjobs Enumerate print jobs deletedomuser Delete domain user result was NT_STATUS_NONE_MAPPED null session or valid credentials). Get help on commands | Type: STYPE_DISKTREE_HIDDEN samlookupnames Look up names Shortcut to New Folder (2).lnk A 420 Sun Dec 13 05:24:51 2015 SANS Penetration Testing | Plundering Windows Account Info via REG | Comment: Remote IPC While having some privileges it is also possible to create a user within the domain using the rpcclient. Running something like ngrep -i -d tap0 's.?a.?m.?b.?a. The next command that can be used is enumalsgroups. --------------- ---------------------- Connect to wwwroot share (try blank password), Nmap scans for SMB vulnerabilities (NB: can cause DoS), Enumerate SNMP device (places info in readable format), Enumerate file privileges (see here for discussion of file_priv), Check if current user superuser (on = yes, off = no), Check users privileges over table (pg_shadow). -s, --configfile=CONFIGFILE Use alternative configuration file | Anonymous access: | Type: STYPE_DISKTREE result was NT_STATUS_NONE_MAPPED This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. is SMB over Ip. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1014 getprinter Get printer info LSARPC-DS You get the idea, was pretty much the same for the Ubuntu guy cept that his user accounts were -3000. exit takes care of any password request that might pop up, since were checking for null login. 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. samsync Sam Synchronisation -V, --version Print version, Connection options: | State: VULNERABLE This group constitutes 7 attributes and 2 users are a member of this group. [DATA] attacking service smb on port 139 -S, --signing=on|off|required Set the client signing state To enumerate a particular user from rpcclient, the queryuser command must be used. queryuseraliases Query user aliases . seal Force RPC pipe connections to be sealed samquerysecobj Query SAMR security object To look for possible exploits to the SMB version it important to know which version is being used. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2002 Forbid the creation and modification of files? MAC Address: 00:50:56:XX:XX:XX (VMware) Hashes work. With --pw-nt-hash, the pwd provided is the NT hash, #Use --no-pass -c 'recurse;ls' to list recursively with smbclient, #List with smbmap, without folder it list everything. | Risk factor: HIGH netname: ADMIN$ Enumerate Domain Users. When dealing with SMB an attacker is bound to be dealt with the Network Shares on the Domain. It is also possible to add and remove privileges to a specific user as well. If Im missing something, leave a comment. With an anonymous null session you can access the IPC$ share and interact with services exposed via named pipes. Curious to see if there are any "guides" out there that delve into SMB . result was NT_STATUS_NONE_MAPPED adddriver Add a print driver D 0 Thu Sep 27 16:26:00 2018 That narrows the version that the attacker might be looking at to Windows 10, Windows Server 2016, and Windows Server 2019. platform_id : 500 Impacket, 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query. -I, --dest-ip=IP Specify destination IP address, Help options In the demonstration, it can be observed that the current user has been allocated 35 privileges. Flashcards. This can be verified using the enumdomgroups command. A Mind Map about OSCP Guide submitted by Rikunj Sindhwad on Jun 12, 2021. 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. You can also fire up wireshark and list target shares with smbclient , you can use anonymous listing to explained above and after that find , # 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, hydra -t 1 -V -f -l administrator -P /usr/share/wordlists/rockyou.txt $ip smb, 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. RPC/SMB/NetBios exploiting tutorials : r/oscp - Reddit MAC Address = 00-50-56-XX-XX-XX, [+] Finding open SMB ports. Query Group Information and Group Membership. What permissions must be assigned to the newly created files? 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 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. rpcclient $> lookupnames lewis and therefore do not correspond to the rights assigned locally on the server. Using rpcclient we can enumerate usernames on those OSs just like a windows OS. 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. 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. SaAddUsers 0:65281 (0x0:0xff01) rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1013 rffpcnex Rffpcnex test lookupsids Convert SIDs to names Since we performed enumeration on different users, it is only fair to extend this to various groups as well. Which script should be executed when the script gets closed? Example output is long, but some highlights to look for: ngrep is a neat tool to grep on network data. The enum4linux utility within Kali Linux is particularly useful; with it, you can obtain the following: If you don't know what is NTLM or you want to know how it works and how to abuse it, you will find very interesting this page about. | and SP2, and Server 2003 SP1 and earlier allows remote unauthenticated or authenticated attackers to ADMIN$ NO ACCESS querygroupmem Query group membership It can be used on the rpcclient shell that was generated to enumerate information about the server. Upon running this on the rpcclient shell, it will extract the usernames with their RID. -N, --no-pass Don't ask for a password Enumerating Windows Domains with rpcclient through SocksProxy == Bypassing Command Line Logging, https://www.samba.org/samba/docs/current/man-html/rpcclient.1.html, https://github.com/SecureAuthCorp/impacket/tree/master/examples, https://www.cobaltstrike.com/help-socks-proxy-pivoting, https://www.youtube.com/watch?v=l8nkXCOYQC4&index=19&list=WL&t=7s, code execution on a target system and the beacon is calling back to the team server, PID 260 - beacon injected into dllhost process. WORKGROUP <1e> - M The polices that are applied on a Domain are also dictated by the various group that exists. | A buffer overflow vulnerability in the Routing and Remote Access service (RRAS) in Microsoft Windows 2000 SP4, XP SP1 It is possible to enumerate the SAM data through the rpcclient as well. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143 S-1-5-21-1835020781-2383529660-3657267081-1003 LEWISFAMILY\daemon (2) Password attack (Brute-force) Brute-force service password. In this communication, the child process can make requests from a parent process. --------------- ---------------------- In the demonstration presented, there are two domains: IGNITE and Builtin. Disclaimer: These notes are not in the context of any machines I had during the OSCP lab or exam. | grep -oP 'UnixSamba. March 8, 2021 by Raj Chandel. SeSecurityPrivilege 0:8 (0x0:0x8) 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. timeout connecting to 192.168.182.36:445 *[[: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. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2000 This command will show you the shares on the host, as well as your access to them. As with the previous commands, the share enumeration command also comes with the feature to target a specific entity. Created with Xmind. dfsexist Query DFS support Pentesting Cheatsheets - Red Team Notes |_smb-vuln-ms10-054: false #rpcclient $>srvinfo #rpcclient $>enumdomusers #rpcclient $>querydominfo #rpcclient $>getdompwinfo //password policy #rpcclient $>netshareenum #nmblookup -A 192.168.1.1 getprintprocdir Get print processor directory The TTL drops 1 each time it passes through a router. Ill include examples, but where I use PWK labs, Ill anonymize the data per their rules. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1006 | Disclosure date: 2006-6-27 To enumerate the Password Properties on the domain, the getdompwinfo command can be used. -c, --command=COMMANDS Execute semicolon separated cmds ECHO | References: --------------- ---------------------- enumdata Enumerate printer data schannel Force RPC pipe connections to be sealed with 'schannel' (NETSEC). share Disk rpcclient -U "" 192.168.1.100 rpcclient $> querydominfo . --------------- ---------------------- OSCP Guide | Rikunj Sindhwad - Xmind OSCP/oscp-cheatsheet.md at master tagnullde/OSCP GitHub Honor privileges assigned to specific SID?

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