Posted: Tue Aug 20, 2019 2:49 Post subject: Forgot password, can't 30/30/30, can't telnet
So I'm in a pickle, I have an Archer C9 running ddwrt and I cannot remember my admin password. I figured okay I'll just reset, but guess what the reset button has been turned off in the firmware. Finally I try to telnet in however it's asking for the same password which I do not have.
Right now all I can think is brute Force the password.
Check out Serial Recovery. You can issue a command nvram erase from the CFE prompt. Then reboot... should do the trick. Failing that, you can re-flash the router from the CFE prompt.
Cheers
Thank you for the info, from what I have gathered it looks like I'll need to open the router case and connect some wires and probably order a special usb interface? Does that sound accurate?
Joined: 08 May 2018 Posts: 14219 Location: Texas, USA
Posted: Tue Aug 20, 2019 17:48 Post subject:
nckwrn wrote:
jxm wrote:
Check out Serial Recovery. You can issue a command nvram erase from the CFE prompt. Then reboot... should do the trick. Failing that, you can re-flash the router from the CFE prompt.
Cheers
Thank you for the info, from what I have gathered it looks like I'll need to open the router case and connect some wires and probably order a special usb interface? Does that sound accurate?
Yep. If doing a 10-second or so reset button push doesn't work.
When I configured ddwrt there was a setting to disable the reset button, in hindsight I probably should not have disabled it.
I've tried holding the button for 5 seconds, 10 seconds, 30 seconds, I've tried turning the unit off, holding the reset button and then powering back on. The reset button seems very disabled.
Thanks everybody for the help, looks like I will be attempting a serial recovery
When I configured ddwrt there was a setting to disable the reset button, in hindsight I probably should not have disabled it.
Ya, don't do that. Have you tried hitting the reset (or WPS) button right after power-up (~<1s)? The CFE prob doesn't look at it though. You could try flashing back to OEM and hope it doesn't use the same reset nvram enable, but the only other option would be serial CFE break to `nvram erase`, as jxm stated.
If you don't already have an adapter, it can be done from a Raspberry Pi as well. _________________ #NAT/SFE/CTF: limited speed w/ DD#Repeater issues#DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo#
OPNsense x64 5050e ITX|DD: DIR-810L, 2*EA6900@1GHz, R6300v1, RT-N66U@663, WNDR4000@533, E1500@353,
WRT54G{Lv1.1,Sv6}@250|FreshTomato: F7D8302@532|OpenWRT: F9K1119v1, RT-ACRH13, R6220, WNDR3700v4
Joined: 08 May 2018 Posts: 14219 Location: Texas, USA
Posted: Wed Aug 21, 2019 0:09 Post subject:
Once you're serial'ed in and can break CFE boot and issue nvram erase and reboot, you should be good to go, because it will reset all the configs. But to answer your question on how you would flash, it would be over TFTP per the serial recovery wiki
Once you're serial'ed in and can break CFE boot and issue nvram erase and reboot, you should be good to go, because it will reset all the configs. But to answer your question on how you would flash, it would be over TFTP per the serial recovery wiki
Very interesting thread about the raspberry pi, will be installing raspbian and then installing screen onto it, opening up the router and connecting the three wires from the pi to the router tonight.
Joined: 08 May 2018 Posts: 14219 Location: Texas, USA
Posted: Wed Aug 21, 2019 1:23 Post subject:
nckwrn wrote:
Very interesting thread about the raspberry pi, will be installing raspbian and then installing screen onto it, opening up the router and connecting the three wires from the pi to the router tonight.
Thank you very much for all the help
No problem. I didn't read every linked article in detail, but I am wondering if you could substitute minicom for screen. Either or should work. I just haven't used screen in ... about 12 years
Very interesting thread about the raspberry pi, will be installing raspbian and then installing screen onto it, opening up the router and connecting the three wires from the pi to the router tonight.
Thank you very much for all the help
No problem. I didn't read every linked article in detail, but I am wondering if you could substitute minicom for screen. Either or should work. I just haven't used screen in ... about 12 years
Lol on the raspberrypi.org thread you linked he does recommend using screen
Have you tried hitting the reset (or WPS) button right after power-up (~<1s)? The CFE prob doesn't look at it though. You could try flashing back to OEM and hope it doesn't use the same reset nvram enable, but the only other option would be serial CFE break to `nvram erase`, as jxm stated.
