Project

General

Profile

SSH » History » Version 8

Denis 'GNUtoo' Carikli, 04/25/2019 09:23 PM
generating keys don't fail anymore on Replicant 6.0 0003

1 1 Denis 'GNUtoo' Carikli
h1. SSH
2 2 Denis 'GNUtoo' Carikli
3 1 Denis 'GNUtoo' Carikli
h2. Server
4
5
This tutorial was tested on Replicant 6.0, it might or might not work on older Replicant versions.
6
7 5 Denis 'GNUtoo' Carikli
This tutorial assumes that:
8 7 Denis 'GNUtoo' Carikli
* You already setup adb and gave it root access
9 5 Denis 'GNUtoo' Carikli
* You already know how to use OpenSSH.
10
* You already generated some SSH keys on your computer.
11 3 Denis 'GNUtoo' Carikli
12 1 Denis 'GNUtoo' Carikli
First, connect your smartphone or tablet to your computer trough USB, and make sure that ADB is already setup. If it is not, you can follow the [[ADB|explanations on how to setup ADB]].
13
14
Then on your computer, make sure to give adb root permissions:
15
<pre>
16
$ adb root
17
</pre>
18
19 3 Denis 'GNUtoo' Carikli
OpenSSH requires some host keys to work, generate them on your smartphone/tablet with:
20 1 Denis 'GNUtoo' Carikli
<pre>
21
$ adb shell "/system/bin/ssh-keygen -A"
22
</pre>
23
24
OpenSSH also needs a configuration file in /data/ssh/sshd_config, and by default the /data/ssh/sshd_config doesn't exist. Since we have an example configuration file in /etc/ssh/sshd_config, we can use it.
25
26 3 Denis 'GNUtoo' Carikli
First copy the smartphone/tablet's /etc/ssh/sshd_config to your computer.
27 1 Denis 'GNUtoo' Carikli
<pre>
28 8 Denis 'GNUtoo' Carikli
#cp /etc/ssh/sshd_config /data/ssh/sshd_config
29 1 Denis 'GNUtoo' Carikli
</pre>
30
31 3 Denis 'GNUtoo' Carikli
Then, to permit accessing the smartphone/tablet with your SSH key, you need to copy your public key to the smartphone/tablet. This can be done with:
32 1 Denis 'GNUtoo' Carikli
<pre>
33
$ adb push ~/.ssh/id_rsa.pub /data/ssh/authorized_keys
34
</pre>
35
36 7 Denis 'GNUtoo' Carikli
First get a root shell on the smartphone/tablet with:
37 1 Denis 'GNUtoo' Carikli
<pre>
38
$ adb root
39 7 Denis 'GNUtoo' Carikli
$ adb shell
40
</pre>
41
Then you can start OpenSSH with:
42
<pre>
43
root@i9300:/ # /system/bin/sshd
44 1 Denis 'GNUtoo' Carikli
</pre>
45 3 Denis 'GNUtoo' Carikli
46 1 Denis 'GNUtoo' Carikli
Note that OpenSSH won't be started automatically at boot, so after rebooting the smartphone/tablet, it will need to be started again manually.
47
48 5 Denis 'GNUtoo' Carikli
You should then be able to ssh into the smartphone/tablet. For instance, if you connect to it trough WiFi and that it's IP address is 192.168.43.1, you can do it this way:
49 1 Denis 'GNUtoo' Carikli
<pre>
50
$ ssh root@192.168.43.1
51
</pre>