Which of the following tools crashes computers running Windows 2000/XP/NT by sending crafted SMB requests?

NBTdeputy is a NetBIOS Name Service tool used to respond to NBT name queries on a network, not a tool for crashing systems via malformed SMB packets.

SMBGrind is not the recognized tool associated with crashing Windows NT/2000/XP systems through crafted SMB requests in this context.

SMBDie targets the SMB service on Windows NT, 2000, and XP by sending crafted, malformed SMB packets that the operating system cannot properly handle, triggering a Blue Screen of Death. The tool exploits improper input validation in the Windows SMB implementation, causing affected systems to crash without requiring authentication. It became a well-known denial-of-service tool specifically associated with these legacy Windows versions and the vulnerabilities in their SMB stack.

Samdump is a credential extraction utility used to dump NTLM password hashes from the Windows SAM database, serving an entirely different purpose than denial-of-service attacks.