diff --git a/HackTheBox/Forest.md b/HackTheBox/Forest.md new file mode 100644 index 0000000..1ec3ed7 --- /dev/null +++ b/HackTheBox/Forest.md @@ -0,0 +1,161 @@ +# HackTheBox-Forest + +## NMAP +```bash + +PORT STATE SERVICE REASON VERSION +53/tcp open domain? syn-ack ttl 127 +| fingerprint-strings: +| DNSVersionBindReqTCP: +| version +|_ bind +88/tcp open spark syn-ack ttl 127 Apache Spark +135/tcp open msrpc? syn-ack ttl 127 +139/tcp open netbios-ssn? syn-ack ttl 127 +464/tcp open kpasswd5? syn-ack ttl 127 +593/tcp open ncacn_http syn-ack ttl 127 Microsoft Windows RPC over HTTP 1.0 +636/tcp open ldapssl? syn-ack ttl 127 +3268/tcp open ldap syn-ack ttl 127 Microsoft Windows Active Directory LDAP (Domain: htb.local, Site: Default-First-Site-Name) +3269/tcp open globalcatLDAPssl? syn-ack ttl 127\ +5985/tcp open http syn-ack ttl 127 Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP) +| http-methods: +|_ Supported Methods: HEAD +9389/tcp open adws? syn-ack ttl 127 +Host script results: +|_clock-skew: mean: 3h40m48s, deviation: 4h57m02s, median: 10m45s +| smb-os-discovery: +| OS: Windows Server 2016 Standard 14393 (Windows Server 2016 Standard 6.3) +| Computer name: FOREST +| NetBIOS computer name: FOREST\x00 +| Domain name: htb.local +| Forest name: htb.local +| FQDN: FOREST.htb.local +|_ System time: 2021-05-11T11:43:01-07:00 +| smb-security-mode: +| account_used: guest +| authentication_level: user +| challenge_response: supported +|_ message_signing: required +| smb2-security-mode: +| 2.02: +|_ Message signing enabled and required +|_smb2-time: Protocol negotiation failed (SMB2) + + +``` + +Here we port 88 open which is for Kerberos and port 3268 for ldap which tells that this is an Active Directory machine , we also have smb port open on the machine so we can check if there are any smb shares or not + +## PORT 139/445 (SMB) + + +We get an authentication error means that Anonymous login is disabled so let's move to ldap + +## PORT 3268 (LDAP) +LDAP stands for `Lightweight Directory Access Protocol` , it is used for querying /locating data about organizations, individuals and other resources such as files and devices in a network so there is a tool for performing searches for users ,groups and etc. + +https://github.com/ropnop/go-windapsearch + +This is the tool that I found was working , there is no need to clone this simply go to releases and download the compiled binary + +`windapsearch-linux-amd64 -d 'htb.local' --dc 10.10.10.161 -m users` + + + + +Let's break down the syntax of this tool + +-d ---> This specifies the domain name which `htb.local` + +--dc ---> This specifies domain controller ip (machine ip) + +-m ---> This is for specifying module to use in this case we are using `users` module which will try to query information about users + + + +These are the available modules . We know that service accounts are usually kerberoastable so we are going to search for a service account , in order to that we need to run a custom module in which we are going to use a filter `(objectclass=*)` when executing this query, we will be presented with all objects and all attributes available in the tree + + + +This will show a lot of output so start searching for `Service Accounts` till you find a service account name + + + +Alternatively we can use `enum4linux` which can enumerate smb shares and query LDAP and look for users and shares. + + + + + +We can see this service account `svc-alfresco` as the prefix `svc` is for service, so we will use impacket GetNPUsers.py since this service account won't require kerberos pre-authentication this is know nas `AS-REP Roasting` you'll see the hash will be different than normal kerberos hash + + + +So we can crack this hash either with john or hashcat, I will be using `hashcat` and we may need to know the type of hash in hashcat so going to hashcat examples we can find which mode we need to supply + + + + + + + +Perfect we have the password , now we can use `bloodhound-injestor` to collection information about the AD environment + +https://github.com/fox-it/BloodHound.py + +``` +python3 bloodhound.py -d 'htb.local' -u 'svc-alfresco' -p 's3rvice' -gc 'FOREST.htb.local' -c all -ns 10.10.10.161 +``` + + + +We'll have these json files so we put all these files in an archive and launch bloodhound and import that archive file + + + + + +We can ran query `Find All Domain Admins` and can see the result + + + +Run the query `Find AS-REP Kerbroastable Users` + + + +And mark the account as owned , click on the account and on the left side you can see in how may groups this account has permissions + + + +Select `Reachable Higher Targets` + + + +Exaplain about WriteDACL + +Login with the credentials with `evil-winrm` and upload `PowerView.ps1` powershell script + +https://github.com/PowerShellMafia/PowerSploit/blob/master/Recon/PowerView.ps1 + + + + + +Now we need to create a new user , so I am going to create a user named `arz`, then add it to the `Exchange Windows Permissions` group which is a domain group. After that we will create variable having arz's password which should converted it to a secure form and create a powershell object through that ,lastly we will use powerview's `Add-DomainObjectAcl` function that will allow us to give this user `DCSync rights` which are replication rights which will allows us to rrequest password hashes from the Domain Controller. + + + + + + +Now we need to run impacket's `secretsdump.py` which will dump password hashes from `NTDS.dit` file + + + +We could have also done this we service account as well + + + + + + \ No newline at end of file