Password attack (Brute-force) Brute-force service password. logonctrl Logon Control Manh-Dung Nguyen Blog Pentest Publications Whoami @ rffpcnex Rffpcnex test rpcclient $> lookupnames guest The next command to observe is the lsaquerysecobj command. It can be done with the help of the createdomuser command with the username that you want to create as a parameter. Usage: rpcclient [OPTION] Test. . SMB - OSCP Playbook enumdataex Enumerate printer data for a key setprinterdata Set REG_SZ printer data none Force RPC pipe connections to have no special properties, Lets play with a few options: If the permissions allow, an attacker can delete a group as well. samsync Sam Synchronisation To enumerate the Password Properties on the domain, the getdompwinfo command can be used. Hydra v5.1 (c) 2005 by van Hauser / THC - use allowed only for legal purposes. Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services . IPC$ NO ACCESS We can also check if the user we created has been assigned a SID or not using the lookupnames command on the rpcclient. Protocol_Name: SMB #Protocol Abbreviation if there is one. NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME), # returns NT_STATUS_ACCESS_DENIED or even gives you a session. Ill include examples, but where I use PWK labs, Ill anonymize the data per their rules. Many system administrators have now written scripts around it to manage Windows NT clients from their UNIX workstation. so lets run rpcclient with no options to see what's available: SegFault:~ cg$ rpcclient. [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 - Help - Penetration Test Resource Page |_smb-vuln-ms10-054: false querygroup Query group info and therefore do not correspond to the rights assigned locally on the server. share Disk rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2001 SYSVOL READ ONLY, Enter WORKGROUP\root's password: When used with the builtin parameter, it shows all the built-in groups by their alias names as demonstrated below. INet~Services <1c> - M .. D 0 Thu Sep 27 16:26:00 2018 rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-501 rpcclient $> queryuser msfadmin. Nice! # download everything recursively in the wwwroot share to /usr/share/smbmap. ADMIN$ NO ACCESS without the likes of: which most likely are monitored by the blue team. 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). 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. null session or valid credentials). 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. --------------- ---------------------- It has undergone several stages of development and stability. Learn more about the OS Versions. The child-parent relationship here can also be depicted as client and server relation. Most of the Corporate offices dont want their employees to use USB sticks or other mediums to share files and data among themselves. path: C:\tmp lookupdomain Lookup Domain Name 2. See examples in the previous section. 3. setdriver Set printer driver Read previous sections to learn how to connect with credentials/Pass-the-Hash. enumforms Enumerate forms This command was able to enumerate two specific privileges such as SeChangeNotiftyPrivielge and SeNetworkLogonRight privilege. Shortcut to New Folder (2).lnk A 420 Sun Dec 13 05:24:51 2015 lookupsids Convert SIDs to names This will help in getting the information such as the kind of password policies that have been enforced by the Administrator in the domain. 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). Manh-Dung Nguyen - OSCP Enumeration - GitHub Pages It has a total of 67 users. Are you sure you want to create this branch? In the case of queryusergroups, the group will be enumerated. But it is also possible to get the password properties of individual users using the getusrdompwinfo command with the users RID. This can be obtained by running the lsaenumsid command. In general, the rpcclient can be used to connect to the SMB protocol as well. | State: VULNERABLE 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. 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. --------- ---- ------- This is an approach I came up with while researching on offensive security. | A buffer overflow vulnerability in the Routing and Remote Access service (RRAS) in Microsoft Windows 2000 SP4, XP SP1 But sometimes these don't yield any interesting results. Many groups are created for a specific service. 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. lsaquerysecobj Query LSA security object getdataex Get printer driver data with keyname *', # download everything recursively in the wwwroot share to /usr/share/smbmap. In this article, we were able to enumerate a wide range of information through the SMB and RPC channel inside a domain using the rpcclient tool. 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. lsaquery Query info policy ECHO -S, --signing=on|off|required Set the client signing state result was NT_STATUS_NONE_MAPPED 623/UDP/TCP - IPMI. Since we already performed the enumeration of such data before in the article, we will enumerate using enumdomgroup and enumdomusers and the query-oriented commands in this demonstration. remark: IPC Service (Mac OS X) |_ Current user access: READ server type : 0x9a03. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. 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. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1007 IPC$ IPC Remote IPC SecureAuthCorp/impacket, https://www.cobaltstrike.com/help-socks-proxy-pivoting. LSARPC samlookuprids Look up names A collection of commands and tools used for conducting enumeration during my OSCP journey. <03> - M The connection uses. | IDs: CVE:CVE-2006-2370 Works well for listing and downloading files, and listing shares and permissions. In the demonstration, it can be observed that the current user has been allocated 35 privileges. list List available commands on 445/tcp open microsoft-ds [+] IP: [ip]:445 Name: [ip] SYSVOL NO ACCESS, [+] Finding open SMB ports. When it was passed as a parameter in the command lookupsids, the attacker was able to know that this belongs to the group Everyone. 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. Adding it to the original post. I create my own checklist for the first but very important step: Enumeration. Enum4linux is a Linux alternative to enum.exe and is used to enumerate data from Windows and Samba hosts. 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. [DATA] 1 tasks, 1 servers, 816 login tries (l:1/p:816), ~816 tries per task -O, --socket-options=SOCKETOPTIONS socket options to use debuglevel Set debug level Depending on the user privilege it is possible to change the password using the chgpasswd command. Host script results: Custom wordlist. -U, --user=USERNAME Set the network username -V, --version Print version, Connection options: It can be observed that the os version seems to . While Port 139 is known technically as NBT over IP, Port 445 is SMB over IP. After establishing the connection, to get the grasp of various commands that can be used you can run the help. When dealing with SMB an attacker is bound to be dealt with the Network Shares on the Domain. It can be used on the rpcclient shell that was generated to enumerate information about the server. 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. #rpcclient $>srvinfo #rpcclient $>enumdomusers #rpcclient $>querydominfo #rpcclient $>getdompwinfo //password policy #rpcclient $>netshareenum #nmblookup -A 192.168.1.1 It also includes the commands that I used on platforms such as Vulnhub and Hack the Box. enumdomusers Enumerate domain users # lines. The rpcclient was designed to perform debugging and troubleshooting tasks on a Windows Samba configuration. S-1-5-21-1835020781-2383529660-3657267081-1002 LEWISFAMILY\daemon (1) OSCP notes: ACTIVE INFORMATION GATHERING Flashcards | Quizlet . This can be extracted using the lookupnames command used earlier. PORT STATE SERVICE result was NT_STATUS_NONE_MAPPED In the demonstration, it can be observed that lsaenumsid has enumerated 20 SIDs within the Local Security Authority or LSA. querydominfo Query domain info Initial Access. Try "help" to get a list of possible commands. | \\[ip]\IPC$: May need to run a second time for success. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1012 Copyright 2017 pentest.tonyng.net. -P, --machine-pass Use stored machine account password

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