Telnet patch on 1.05.301 fw

Neilius · Post by **Neilius** » Sat Aug 08, 2009 20:02

I'd like to try and patch the latest BW FW. (1.05.301 I think).

I've managed to unpack the FW, and unzippd linux.bin using the Wztools GUI.

What's the best way to edit this file? I've found a few hex editors, i'ts really hard to read the code in that format. What editor do people normally use?

From what I've read, I need to search thru the file until I find a mention of rc.sysinit then scan forward in the file till I find a [line feed] # [Comment] and replace this with [linefeed] [telnetd command], making sure only to insert the code where there were comments previously.

Is this what I'm supposed to do?

Has anyone patched the latest BW FW successfully.

Thanks in advance.

tonymy01 · Post by **tonymy01** » Sat Aug 08, 2009 23:16

'programmers notepad' for windows or vi for everything else.

prl · Post by **prl** » Sat Aug 08, 2009 23:29

Neilius wrote:I'd like to try and patch the latest BW FW. (1.05.301 I think).

I've managed to unpack the FW, and unzippd linux.bin using the Wztools GUI.

What's the best way to edit this file? I've found a few hex editors, i'ts really hard to read the code in that format. What editor do people normally use?

From what I've read, I need to search thru the file until I find a mention of rc.sysinit then scan forward in the file till I find a [line feed] # [Comment] and replace this with [linefeed] [telnetd command], making sure only to insert the code where there were comments previously.

Is this what I'm supposed to do?

Has anyone patched the latest BW FW successfully.

Thanks in advance.

You can do it that way, and that's how it was originally done. But there are easier ways.

Unpack the application and root file systems using unpack_wrp.pl in BWFWTools. Edit, then repack them with pack_wrp.pl. bw_patcher.pl in BWFWTools can apply a number of pre-packaged hacks.

You can apply the telnet patch just by running:

Code: Select all

bw_patcher.pl original-firmware.wrp patched-firmware.wrp Beyonwiz::Hack::Telnet

The hard work's already been done for you on that one

If you want to edit rc.sysinit, you have to edit with an editor that preserves Unix line endings (or know how to use IFS).

prl · Post by **prl** » Sat Aug 08, 2009 23:30

tonymy01 wrote:'programmers notepad' for windows or vi for everything else.

Nellius was talking about editing linux.bin to edit rc.sysinit in place in the ROMFS. I wouldn't trust a text editor to do what he was proposing

tonymy01 · Post by **tonymy01** » Sat Aug 08, 2009 23:43

oops, yeah. I forgot about that very old school method! Now i have both serial and a /tmp/config/rc.local i no longer have to worry about modding any further upgrades any way.

Neilius · Post by **Neilius** » Mon Aug 10, 2009 10:08

Thanks for the replies.

Perhaps I should bite the bullet, install perl and try it with BWFWTools

prl · Post by **prl** » Mon Aug 10, 2009 10:16

Neilius wrote:Thanks for the replies.

Perhaps I should bite the bullet, install perl and try it with BWFWTools

The BWFWTools README.txt has instructions about where to get a free version of Perl for Windows that's known to work with BWFWTools.

BWFWTools also works with Cygwin on Windows, which comes with Perl in the base install.