From the doc: 'Utility for cracking password protected Windows 95/98/ME shares. xIntruder exploits vulnerability in SMB implementation on these operating systems, which allows for very effective collection of passwords (any password in local network less than one minute, in the internet less than 10 minutes), originally discovered by www.nsfocus.com. xIntruder was created in the development possess of the project xSHaReZ 2 and is recommended to be used in conjunction with xSHaReZ 2.'
xintruder.exe