SidePieceVillage

Heist is a Windows Easy box, I wanted to take it easy and doing something relaxing and this was very interesting to say the least. This starts out with a website that you’re able to login as a guest and read the recent posts. When you do you gather a user name, as well as see an attachment. This attactment is a cisco config file. You’re able to deduce what type of hash the passwords are and crack them. From there your able to get a list of users, and then spray to find one allows for winrm access. Upon looking a directories and anything from the norm, you find processes running and a particular firefox is running, which can allow for dumping the process memory if its still being used. Using procdump64.exe, we’re able to dump the process memory and filter through and retrieve the Administrator password. Initial Nmap12345678910111213141516171819202122232425262728293031PORT STATE SERVICE REASON VERSION80/tcp open http syn-ack ttl 127 Microsoft IIS httpd...

Retro2 is a Easy Windows machine, that starts off with Guest auth enabled to look at shares finding a Microsoft Access Database file. After finding the user and password we are able to obtain a bloodhound dump. This shows a relatively simple path with some twists, we are able to find a couple of Pre-Windows machine and change the password for one. Allowing us to change/reset the password for the computer ADMWS01$ which has a particular attribute that allows the reset of the password. Once we’ve done this we are able to add our user to the Services group allowing for RDP access. Upon getting a session we find that with the version of Windows Server 2008 we are able to control the full path to a windows registry value that allows us to escalate to NT AUTHORITY\SYSTEM. Initial Nmap123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354PORT STATE SERVICE VERSION53/tcp open domain Microsoft DNS 6.1.7601 (1DB15F75)...

Scrambled is a Medium Windows Active Directory machine. Enumerating the website hosted on the remote machine a potential attacker is able to deduce the credentials for the user ksimpson. On the website, it is also stated that NTLM authentication is disabled meaning that Kerberos authentication is to be used. Accessing the Public share with the credentials of ksimpson, a PDF file states that an attacker retrieved the credentials of an SQL database. This is a hint that there is an SQL service running on the remote machine. Enumerating the normal user accounts, it is found that the account SqlSvc has a Service Principal Name (SPN) associated with it. An attacker can use this information to perform an attack that is knows as kerberoasting and get the hash of SqlSvc. After cracking the hash and acquiring the credentials for the SqlSvc account an attacker can perform a silver ticket attack to forge a ticket and impersonate the user Administrator on the remote MSSQL service. Enumeration...

Breach is a Windows Medium box that starts with Guest auth to shares. Having read/write to one share, we upload a lnk file and receive a user hash. This hash is used to kerberoast SPNs which gets a hash for svc_mssql user. As we have a Service Account, we can create a silver ticket. After creation, we connect as Administrator to a MSSQL instance and can run commands via xp_cmdshell. Only after bypassing AMSI do you get a reverse shell. Once on the machine, checking our privileges we have SeImpersonate available to us. Using GodPotato we create a user and add them to the Administrators group, and connect as Admin via evil-winrm. Initial Nmap12345678910111213141516PORT STATE SERVICE REASON VERSION53/tcp open domain syn-ack ttl 127 Simple DNS Plus80/tcp open http syn-ack ttl 127 Microsoft IIS httpd 10.088/tcp open kerberos-sec syn-ack ttl 127 Microsoft Windows Kerberos (server time: 2025-03-28 00:08:14Z)135/tcp open msrpc ...

Cypher is a Linux Medium box that starts with a website hosting a .jar file. Once downloaded and decompiled you find amongst them a CustomFunctions.class java file. Using jd-gui we are able to look at the source code of the file. The code reveals a attack vector inside a string that executes a system command. Using Cypher Injection we are able to obtain a reverse shell that gets us on the box as neo4j. Once on the box we look around to find a .yml file containing credentials. Trying with the other user gets us a shell as graphasm. We ssh in for stability, and check what permissions we have with sudo -l that reveals we can run bbot with sudo. Looking into the github and the man pages. We can force run a config through a dry run and have it abort before executing. Doing this we can obtain the root.txt file. Initial Nmap12345678910111213PORT STATE SERVICE REASON VERSION22/tcp open ssh syn-ack ttl 63 OpenSSH 9.6p1 Ubuntu 3ubuntu13.8 (Ubuntu Linux; protocol 2.0)|...

Cascade is a medium Windows machine configured as a Domain Controller. LDAP anonymous binds are enabled, and enumeration yields the password for user r.thompson, which gives access to a TightVNC registry backup. The backup is decrypted to gain the password for s.smith. This user has access to a .NET executable, which after decompilation and source code analysis reveals the password for the ArkSvc account. This account belongs to the AD Recycle Bin group, and is able to view deleted Active Directory objects. One of the deleted user accounts is found to contain a hardcoded password, which can be reused to login as the primary domain administrator. Initial Nmap1234567891011121314151617181920PORT STATE SERVICE REASON VERSION53/tcp open domain syn-ack ttl 127 Microsoft DNS 6.1.7601 (1DB15D39) (Windows Server 2008 R2 SP1)| dns-nsid:|_ bind.version: Microsoft DNS 6.1.7601 (1DB15D39)88/tcp open kerberos-sec syn-ack ttl 127 Microsoft Windows Kerberos...

Backfield is a hard Windows machine featuring Windows and Active Directory misconfigurations. Anonymous / Guest access to an SMB share is used to enumerate users. The user is found to have Kerberos pre-authentication disabled, which allows us to conduct an ASREPRoasting attack. This allows us to retrieve a hash of the encrypted material contained in the AS-REP, which can be subjected to an offline brute force attack in order to recover the plaintext password. With this user we can access a SMB share containing forensics artifacts, including an lsass process dump. This contains a username and a password for a user with WinRM privileges, who is also a member of the Backup Operators group. The privileges conferred by this privileged group are used to dump the Active Directory database, and retrieve the hash of the primary domain administrator. Nmap1234567891011121314PORT STATE SERVICE REASON VERSION53/tcp open domain syn-ack ttl 127 Simple DNS...

Data starts out with Grafana being ran on port 3000. We are able to use Unauthorized Arbitrary File Read Vulnerability (CVE-2021-43798) and exfil grafana.ini and grafana.db. Having these we can use a python script to convert this data and hashes to sha256 for hashcat. This gets us on the box as boris. Looking at his privileges we can execute docker exec. To get root privileges on the docker container we can run sudo /snap/bin/docker exec --privileged -u 0 -it grafana /bin/bash. From here we can see the filesystem df -h and since we’re root we can mkdir /tmp/pwnd and mount /dev/xXxXx /mnt/pwnd. This lets us read, write, and execute on host filesystem outside the container. Initial Nmap123PORT STATE SERVICE REASON VERSION 22/tcp open ssh syn-ack ttl 63 OpenSSH 7.6p1 Ubuntu 4ubuntu0.5 (Ubuntu Linux; protocol 2.0)3000/tcp open ppp? syn-ack ttl 62 HTTP (Port 3000 - Grafana)Going to this shows a login page...

Slonik is a linux box created around reusing a socket and the ability to port forward them. It starts with a box running NFS, and using showmount our able to see two. There is /var/backups, and /home. Home was interesting, with there being a .bash_history and a .psql_history to see that we have commands previously ran. Using rpcinfo you can see we have sockets being used. From the information we have we can create a directory /tmp/sock and us it and the ending pid in the .bash_history. Using ssh we can connect using the socket created by postgres. Once connected we can get a reverse shell using a POC from hacktricks. Once getting a shell, we run pspy64 to see a script running from cron /usr/bin/backup. This script will back up everything postgres HOME directory. By copying /usr/bin/bash to our HOME directory in main. Then giving it the sticky bit and making it executable we can get root. Initial Nmap1234PORT STATE SERVICE REASON22/tcp open ssh syn-ack ttl 63111/tcp ...

Retro is a Easy Windows box working around pre-created windows 2000 machines. Pre-creating a computer means adding a computer to AD without using it to join a host to the domain right away, it just gets used later. There is a “Pre-Windows 2000” compatibility option that can be selected when creating a computer from ADUC, still present in Windows Server 2022. A computer created with this option will have a password equal to the computers name in lowercase without the ‘$’. This allows you to look at ADCS templates being used that are vulnerable, which leads to privilege escalation to Administrator. Resource from Medium Initial Nmap123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293# Nmap 7.94SVN scan initiated Wed Nov 6 22:09:30 2024 as: /usr/lib/nmap/nmap -v -sVC -oN Evidence/Scans/initial.log 10.10.111.122Nmap scan report for 10.10.111.122Host is up (0.17s...