[Scanu]

forum name:<br /> 
<form action="vb/login.php?do=login" method="post">
<input name="username" type="text"> 
<br /> 
<br /> 
username<br> 
<textarea name="password" type="password"> 
</textarea> 
<br> 
<input type="submit">  
				<input type="hidden" name="s" value="{vb:raw session.sessionhash}" />
				<input type="hidden" name="securitytoken" value="{vb:raw bbuserinfo.securitytoken}" />
				<input type="hidden" name="do" value="login" />
				<input type="hidden" name="vb_login_md5password" />
				<input type="hidden" name="vb_login_md5password_utf" />
</form>

I didn't try it but it should work