CMD Batch Online

[aedthuio]

Hi guys! In my website i've put a .cmd batch file.
Is it possible to run that batch without to save it locally (in the hard drive)?

Thank you

 

[Stein Oiestad]

If the CALL supported similar feature as COPY then you could avoid any explicit save.

But a small batch file (or alias) like this would do the trick:

runweb.cmd

@echo off
setlocal
set URL=user:[email protected]/folder/%1
copy %URL %TEMP%\%1 /e
iff exist %TEMP%\%1 then
call %TEMP%\%1
*del %TEMP%\%1 /q/e
else
echo %URL% not found or download error
endiff
endlocal


If you then had a batch file called mycoolbatchfile.cmd then you would use the following command to run it:

runweb.cmd mycoolbatchfile.cmd

I did a quick test of this, and it worked OK for me.

-stein

 

[aedthuio]

Thank you, but your runweb.cmd save my batch into the %temp% folder. Does exist a way to run a remote batch without to save it in the hard drive?

 

[rconn]

Thank you, but your runweb.cmd save my batch into the %temp% folder. Does exist a way to run a remote batch without to save it in the hard drive?

Not unless you can access your batch file with a UNC or AFS directory.

 

[aedthuio]

What do you suggest me to protect my batch file? I've bought a professional software to compile bat and cmd but it decompiles the source to the %temp% folder.

The ideas were to run the batch on the web or encrypt the batch and run it locally, so yesterday i've installed TCC but i don't know if it can encrypt my batch or help me in some way. I've created a GUI (with an authoring software) called "loader.exe" to launch my batch file. I can modify "loader.exe" to can pass any parameters to my batch, for example:

Run("C:\mycompiledbatch.exe","/C /parameter")

Could it useful (a parameter) to encrypt my batch?
Could TCC help me?

Thank you very much

 

[Charles Dye]

Have you look into BATCOMP?

 

[aedthuio]

EDIT:

Tried now to encrypt my batch with BATCOMP. How can i launch the encrypted file to test it?

 

[Charles Dye]

Tried now to encrypt my batch with BATCOMP. How can i launch the encrypted file to test it?

The same way your run any batch file: type its filename at the command prompt.

 

[aedthuio]

I try to explain me better:

This is "mybatch.cmd":

@echo off
echo TEST OK
>nul pause
exit

With batcomp i do:

batcomp /E /O mybatch.cmd myencryptedbatch.cmd

Batcomp has now created the "myencryptedbatch.cmd" file. Editing it, i found something like this:

»$鑬뛆羬阝韂겺ᆘ邢쇳敾揞᧼查ခꣲ땂⍣粌䠋଱郗쓚㴬戀謉뮞

How can i run the "myencryptedbatch.cmd" batch file?

 

[Charles Dye]

Batcomp has now created the "myencryptedbatch.cmd" file. Editing it, i found something like this:

(gribble)

How can i run the "myencryptedbatch.cmd" batch file?

Change to the directory it's in, and type MYENCRYPTEDBATCH.

 

[aedthuio]

I've opened "tcc.exe" and after changing the batch dir i type: myencryptedbatch

tcc.exe says that is an unknown command.

 

[aedthuio]

What is the command to decrypt an encrypted batch? In the Help i can only find the batcomp to encrypt.

 

[David Marcus]

What is the command to decrypt an encrypted batch? In the Help i can only find the batcomp to encrypt.

The page "Batch File Compression" says, "JP Software does not provide a utility to decompress batch files. If you use BATCOMP, make sure that you also keep a copy of the original batch file for future inspection or modification."

Compressing a .cmd file doesn't work for me either. It works for .btm.

 

[aedthuio]

Ok, it works!

 

[aedthuio]

Does exist a way to read the source of a .btm encrypted file? Is it secure?

 

[Charles Dye]

Does exist a way to read the source of a .btm encrypted file? Is it secure?

I don't think it's cryptographically secure, but it's certainly a lot more obscure than a CMD.EXE batch file -- which must be in plain text for CMD.EXE to process it.

 

[aedthuio]

Thank you!

Now i've tried to encrypt a big size batch file (over 80kb). It contains several FOR / commands.

It seems that the new encrypted .btm is too long. It gives an error about a label that can't found.

If i cut some FOR commands it works. There are no errors in this batch, infact cmd.exe runs it fine.

 

[rconn]

Now i've tried to encrypt a big size batch file (over 80kb). It contains several FOR / commands.

It seems that the new encrypted .btm is too long. It gives an error about a label that can't found.

BATCOMP is a somewhat obsolete and elderly (originally in 4DOS) command; batch files are limited to a maximum size of 64K before compression. If you need to use BATCOMP, you'll have to break up your batch file into multiple < 64K files.