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Level 31

Log in to the server as bandit31 with the password.

There is a git repository at ssh://bandit31-git@localhost/home/bandit31-git/repo. The password for the user bandit31-git is the same as for the user bandit31.

Now — surprise, surprise — another git repo. I do the same spiel again, cloning it into a temp folder.

bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ ls
README.md
bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ cat README.md
This time your task is to push a file to the remote repository.

Details:
    File name: key.txt
    Content: 'May I come in?'
    Branch: master

Okay, so there are clear instructions here. I follow them.

bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ echo "May I come in?" > key.txt
bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ git add key.txt
The following paths are ignored by one of your .gitignore files:
key.txt
Use -f if you really want to add them.
bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ git add -f key.txt
bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ git commit -m "initial commit"
[master f06648e] initial commit
 1 file changed, 1 insertion(+)
 create mode 100644 key.txt
bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$ git push origin master
Could not create directory '/home/bandit31/.ssh'.
The authenticity of host 'localhost (127.0.0.1)' can't be established.
ECDSA key fingerprint is SHA256:98UL0ZWr85496EtCRkKlo20X3OPnyPSB5tB5RPbhczc.
Are you sure you want to continue connecting (yes/no)? yes
Failed to add the host to the list of known hosts (/home/bandit31/.ssh/known_hosts).
This is a OverTheWire game server. More information on http://www.overthewire.org/wargames

bandit31-git@localhost's password:
Counting objects: 3, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 322 bytes | 0 bytes/s, done.
Total 3 (delta 0), reused 0 (delta 0)
remote: ### Attempting to validate files... ####
remote:
remote: .oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.
remote:
remote: Well done! Here is the password for the next level:
remote: 56a9bf19c63d650ce78e6ec0354ee45e
remote:
remote: .oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.
remote:
To localhost:repo
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'bandit31-git@localhost:repo'
bandit31@bandit:/tmp/tmp.HGC86nUnWO/repo$