set initial username/passwd without using GUI?

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lazardo
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Joined: 17 Apr 2014
Posts: 140
Location: SF Bay Area
PostPosted: Thu Mar 21, 2024 18:51    Post subject: set initial username/passwd without using GUI? Reply with quote
Any way to set initial user/pass after firmware upgrade + factory defaults outside of usual GUI method?

telnet did not work, have not yet tried curl POST.

javascript is undecipherable (to me Smile
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Alozaros
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Joined: 16 Nov 2015
Posts: 6447
Location: UK, London, just across the river..
PostPosted: Thu Mar 21, 2024 19:23    Post subject: Reply with quote
nope, after reset you need a GUI to set password and than telnet is enabled...
(i know it sucks, but there is a security reason for it...) back in the days after reset there was
no WAN at all...now its enabled and left to dynamic dhcp...

otherwise one of this methods will do, but you need a CLI (ether telnet or SSh)

nvram set http_passwd=

or

nvram set https_passwd=

nvram commit

or

setuserpasswd root admin

change root and admin to your preference
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mwchang
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Joined: 26 Mar 2013
Posts: 1858
Location: Hung Hom, Hong Kong
PostPosted: Fri Mar 22, 2024 10:32    Post subject: Re: set initial username/passwd without using GUI? Reply with quote
lazardo wrote:
Any way to set initial user/pass after firmware upgrade + factory defaults outside of usual GUI method?
telnet did not work, have not yet tried curl POST.
javascript is undecipherable (to me Smile

It's not about Javacript nor Telnet. There is something called IRREVERSIBLE encryption or hashing, sometimes with salt. Smile

/etc/passwd irreversible encryption - Google Search
https://www.google.com/search?q=%2Fetc%2Fpasswd+irreversible+encryption

Standard Linux allows you to reset root password using boot-time init option. You have to be at the PC to do it.

OTOH, there are code beautifiers to format Javascript codes so that they are more readable. And DD-WRT got Dropbear SSH which is more secured than Busybox Telnet.
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lazardo
DD-WRT User


Joined: 17 Apr 2014
Posts: 140
Location: SF Bay Area
PostPosted: Mon Apr 22, 2024 22:23    Post subject: Reply with quote
Thanks.

The goal was to automate the password setting, so I'll try curl POST.
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yoyoma2
DD-WRT User


Joined: 24 Sep 2016
Posts: 373
PostPosted: Tue Apr 23, 2024 3:24    Post subject: Reply with quote
Take a look at easyddup. I used to upgrade the firmware in place with easyddup on a subnet different than the dd-wrt default subnet. See what the easyddup.sh code did when asking "Save & Restore basic settings y/n ? " which used to save & restore network settings, username and password.

I'm sure much of this is out of date but it's worth a look. The the key files were:
easyddup-vars.ini.sample
save-mynvram.sh
restore-mynvram.sh

Recently even /sbin/reboot was not accessible after firmware write so restore-mynvram.sh probably isn't either.
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