[Carlos]

Hello! can anyone tell me the name of this language??
It's quite different from high-level language.

TEST code:

@echo off
:A
echo Messenger
set /p n=User/IP:
set /p M=Message:
net send %n% %m%
pause
goto A

[xpi0t0s]

Looks like a DOS batch file to me; you would save it with a .bat extension.

[Carlos]

Ye, u r right, i have saved it with bat extension

[neo_vi]

yes this is exactly a batch file. It sends message using net send command. It also has a infinite loop.

set /p n=User/IP:

this line is the victim's IP
the next line is the message.
Seems like a kind of DOS attack.