read remote file without password

We have old Linux machine in remote office and I need to read one file in /user/leasing.txt . No passwords available- admin changed them before leaving :(

nmap output:
 
PORT     STATE  SERVICE            VERSION

1080/tcp closed socks

2222/tcp open   ssh                OpenSSH 5.3 (protocol 2.0)

| ssh-hostkey:

|   1024 b4:35:5d:00:90:1c:2c:6f:cc:e2:0e:c3:01:41:34:63 (DSA)

|_  2048 83:0e:8b:dd:53:b2:ca:75:5c:5d:75:75:c5:5d:f8:25 (RSA)

2710/tcp closed sso-service

4662/tcp closed edonkey

6881/tcp closed bittorrent-tracker

6901/tcp closed jetstream

6969/tcp closed acmsoda

8181/tcp open   http               nginx 1.8.0

| http-methods: GET HEAD POST OPTIONS TRACE

| Potentially risky methods: TRACE

|_See http://nmap.org/nsedoc/scripts/http-methods.html

|_http-server-header: nginx/1.8.0

|_http-title: Site doesn't have a title (text/html; charset=UTF-8).

Device type: general purpose|WAP|storage-misc|load balancer|firewall
andrey_chevronAsked:
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savoneCommented:
I am not sure what your asking.  Do you have a user account on the system?

What is it your showing us here?
Gerwin Jansen, EE MVETopic Advisor Commented:
If you're asking to gain access to a system that you don't have an account for then we cannot help you I'm afraid. Boot into single user mode is an option that is left as a last resort (and change root pwd).
andrey_chevronAuthor Commented:
I don't have a physical access to the machine - so SUM is not an option.
No I don't have user name.
if you don't recognize nmap log - forget it .
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Gerwin Jansen, EE MVETopic Advisor Commented:
>> if you don't recognize nmap log - forget it .
Nobody said we didn't understand nmap log, I'm just saying we cannot help you finding/exploiting weaknesses in nginx/1.8.0 or OpenSSH 5.3.
savoneCommented:
The nmap log is fairly self explanatory, just has to relevance for your question.

As stated above, it is against the site rules to help you exploit a system to gain access.  

Best advice, find someone with physical access and use single user mode to gain access.

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tliottaCommented:
Best advice might be to get the new password(s) from the previous admin. It's very unethical to inhibit access in that way and potentially illegal. See perhaps the most famous similar example. Even if not classed under similar laws,  a letter from a lawyer might be convincing.
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