The Ethical Hacker Network - Non-interactive ftp on linux

H1t M0nk3y

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Non-interactive ftp on linux

« on: June 03, 2010, 05:07:58 PM »

Hi,

I am currently searching for a way to use the basic ftp client on linux machines to download a file in a non-interactive way. So let say I want to download netcat, I would have a file named "ftp.txt" looking like this:

Quote

open 192.168.10.10 21
ftpuser
ftppwd
bin
GET nc
bye

I know on Windows, I could type ftp -s:ftp.txt and it would download the file automaticaly.

But the "-s" command doesn't exist on linux systems... What can I use instead? I just can't seem to find it...

Thanks


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hayabusa

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Re: Non-interactive ftp on linux

« Reply #1 on: June 03, 2010, 09:29:40 PM »

I'd write a script to do it all with input, or use the info on this page (the Linux one):

http://www.walkernews.net/2007/05/08/auto-file-transfer-via-ftp-batch-scripts/

Quote section from that URL:

1.) In the user home directory, create a hidden file called .netrc that contains these auto-ftp commands

machine 10.1.1.10
login walker-login-id-here
password walker-login-password-here
macdef init
prompt
mget *.*
quit
Leave one mandatory blank line here
Leave one mandatory blank line here

machine ftp.walkernews.net
login walker-login-id-here
password walker-login-password-here
macdef init
pwd
quit
Leave one mandatory blank line here
Leave one mandatory blank line here

2.) # Execute chmod 600 .netrc to limit only read and write permission for the login user ownership only. This is a must in order ftp client to automate file transfer!

3.) # Now, if you want to auto-ftp with ftp host 10.1.1.10, just type this command
ftp 10.1.1.10

and the Linux ftp client will automatically execute the series of ftp commands in .netrc file for the matching ftp host.

Similarly, you can type ftp ftp.walkernews.net for auto-ftp file transfer with the second ftp host.

If I scripted my own, I'd just do a

read filename

get $filename

and change the username, password, and ip / hostname for the ftp server (or you could even read them as variables, also, etc...

my 2 cents


« Last Edit: June 03, 2010, 09:33:43 PM by hayabusa »	Logged

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Ketchup

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Re: Non-interactive ftp on linux

« Reply #2 on: June 03, 2010, 09:36:56 PM »

I would probably just CURL if I was doing this on Linux.

Code:

curl ftp://ftp.coolsite.com/file.ext --user me:mypass


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chrisj

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Re: Non-interactive ftp on linux

« Reply #3 on: June 03, 2010, 10:49:59 PM »

Quote from: Ketchup on June 03, 2010, 09:36:56 PM

I would probably just CURL if I was doing this on Linux.

Code:

curl ftp://ftp.coolsite.com/file.ext --user me:mypass

It's been a while, but I think wget (my cli get of choice) does this too.


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H1t M0nk3y

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Re: Non-interactive ftp on linux

« Reply #4 on: June 04, 2010, 06:50:44 AM »

Thanks guys, but I should have mentioned that:

1) curl is not installed on the client machine;

2) Even though I am using the very basic ftp client on the client machine, I am using Pure-FTPD as a server.

So both solutions proposed aren't working (unless it is me!).

I will keep looking and post my findings, unless one of you can help me same some time... Grin


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Ketchup

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Re: Non-interactive ftp on linux

« Reply #5 on: June 04, 2010, 07:25:52 AM »

What about Chris's solution? WGET should be able to pull down a file from FTP.

http://serverfault.com/questions/25199/using-wget-to-recursively-download-whole-ftp-directories


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hayabusa

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Re: Non-interactive ftp on linux

« Reply #6 on: June 04, 2010, 07:46:30 AM »

OK, I'll say it again... BASH script?


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H1t M0nk3y

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Re: Non-interactive ftp on linux

« Reply #7 on: June 04, 2010, 08:01:16 AM »

wget did the trick...

But I was surprised to see that ftp -s exists on Windows but not on Linux. At least for the default basic ftp client.

Anyway, thanks guys!


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