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jclehner / bcm2-utils

Utilities for Broadcom-based cable modems
GNU General Public License v3.0
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Enabling telnet #5

Closed bgermann closed 6 years ago

bgermann commented 6 years ago

If the device's bootloader serial console has been disabled, and you do not have access to the firmware console (either via serial connection, or telnet), there are ways to enable them (coming soon).

I would be interested in getting a shell on TC7200 without using the serial interface. Would you be so kind and share the way to do it? Does it involve exploiting a bug?

jclehner commented 6 years ago

That depends on the firmware on your TC7200. Try removing the coax cable, and reset the device to factory defaults. Then check, without connecting the coax cable, if SNMP is enabled on the device. If so, you should be able to enable telnet. I haven't yet had the time to look into the possibility of an exploit using a crafted GatewaySettings.bin, although it might be possible.

bgermann commented 6 years ago

Thank you, I will try that.