Working SSH Instructions by NerveGas
Previous instructions on the net have required the use of restore mode to set binary permissions. Unfortunately, restore mode doesn't work with all public versions of iPhoneInterface I've tried. The instructions below work by overwriting an existing binary on the system with chmod, and then calling it with the appropriate arguments to set permissions. The result is a fully functional SSH setup. You can then proceed to uploading your own world builds, or other programs to execute via commandline.
Step 1: Key creation.
On your Mac or PC download Dropbear from here:
Run: ./configure && make
You don't need to install the software, just run:
./dropbearkey -t rsa -f dropbear_rsa_host_key
./dropbearkey -t dss -f dropbear_dss_host_key
And copy the two new key files into your iPhoneInterface directory.
Step 2: Uploading Dropbear and friends.
Download the iphone-ssh kit and the iphone binaries kit:
Rename sh6 from the kit to sh.
Use the jailbreak application to break out of jail and then open iPhoneInterface to connect.
Step 3: Overwriting 'update' with 'chmod'.
While still connected to iPhoneInterface make a backup copy of /usr/sbin/update:
Rename this to update.original on your local filesystem
Now copy the 'chmod' binary to 'update' and upload it back to the iPhone:
Step 4: Overwriting the update configuration.
Now the 'update' binary is really 'chmod' and has execute permissions! We
just need to tell the iPhone to chmod next time it boots. To do this, we
download /System/Library/LaunchDaemons/com.apple.update.plist and add our
own arguments to ProgramArguments:
Save the new plist and upload it back to the iPhone:
While we're here, lets also:
Step 5: Reboot the iPhone twice.
The first reboot should set the permissions on the dropbear and related
binaries. The second reboot should start dropbear, so you can ssh to it:
ssh -l root [IP ADDRESS]
The root password is 'dottie'.
Step 6: Replace the original update and com.apple.update.plist files.
Don't forget to put the old update files back. Rename update.original back
to update, and delete the extra ProgramArguments you added to com.apple.update.plist.
Now put them back:
Step 7: Change the root password.
If you don't like 'dottie', you can generate a new encrypted password by running:
perl -e 'print crypt("MYPASSWORD", "XU");'
Where MYPASSWORD is the new password you want, and XU is a random two-letter salt.
Copy the encrypted output and replace the existing one in /etc/master.passwd on the phone.
You're done! Enjoy!