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Blue

OS: Windows, Difficulty: Easy, IP: 10.10.10.40

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Initial Enumeration

# Nmap 7.70 scan initiated Sat Jul  6 14:27:48 2019 as: nmap -sV -sC -O -A -oN T-common 10.10.10.40
Nmap scan report for 10.10.10.40
Host is up (0.23s latency).
Not shown: 992 closed ports
PORT      STATE SERVICE      VERSION
135/tcp   open  msrpc        Microsoft Windows RPC
445/tcp   open  microsoft-ds Windows 7 Professional 7601 Service Pack 1 microsoft-ds (workgroup: WORKGROUP)
49152/tcp open  msrpc        Microsoft Windows RPC
49153/tcp open  msrpc        Microsoft Windows RPC
49154/tcp open  msrpc        Microsoft Windows RPC
49155/tcp open  msrpc        Microsoft Windows RPC
49156/tcp open  msrpc        Microsoft Windows RPC
49157/tcp open  msrpc        Microsoft Windows RPC
No exact OS matches for host (If you know what OS is running on it, see https://nmap.org/submit/ ).
TCP/IP fingerprint:
OS:SCAN(V=7.70%E=4%D=7/6%OT=135%CT=1%CU=37348%PV=Y%DS=2%DC=T%G=Y%TM=5D20630
OS:1%P=x86_64-pc-linux-gnu)SEQ(SP=100%GCD=1%ISR=10D%TI=I%CI=I%II=I%SS=S%TS=
OS:7)OPS(O1=M54DNW8ST11%O2=M54DNW8ST11%O3=M54DNW8NNT11%O4=M54DNW8ST11%O5=M5
OS:4DNW8ST11%O6=M54DST11)WIN(W1=2000%W2=2000%W3=2000%W4=2000%W5=2000%W6=200
OS:0)ECN(R=Y%DF=Y%T=80%W=2000%O=M54DNW8NNS%CC=N%Q=)T1(R=Y%DF=Y%T=80%S=O%A=S
OS:+%F=AS%RD=0%Q=)T2(R=Y%DF=Y%T=80%W=0%S=Z%A=S%F=AR%O=%RD=0%Q=)T3(R=Y%DF=Y%
OS:T=80%W=0%S=Z%A=O%F=AR%O=%RD=0%Q=)T4(R=Y%DF=Y%T=80%W=0%S=A%A=O%F=R%O=%RD=
OS:0%Q=)T5(R=Y%DF=Y%T=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)T6(R=Y%DF=Y%T=80%W=0%
OS:S=A%A=O%F=R%O=%RD=0%Q=)T7(R=Y%DF=Y%T=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)U1(
OS:R=Y%DF=N%T=80%IPL=164%UN=0%RIPL=G%RID=G%RIPCK=G%RUCK=G%RUD=G)IE(R=Y%DFI=
OS:N%T=80%CD=Z)

Network Distance: 2 hops
Service Info: Host: HARIS-PC; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
|_clock-skew: mean: -26m11s, deviation: 34m37s, median: -6m12s
| smb-os-discovery:
|   OS: Windows 7 Professional 7601 Service Pack 1 (Windows 7 Professional 6.1)
|   OS CPE: cpe:/o:microsoft:windows_7::sp1:professional
|   Computer name: haris-PC
|   NetBIOS computer name: HARIS-PC\x00
|   Workgroup: WORKGROUP\x00
|_  System time: 2019-07-06T09:53:21+01:00
| smb-security-mode:
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
| smb2-security-mode:
|   2.02:
|_    Message signing enabled but not required
| smb2-time:
|   date: 2019-07-06 14:23:23
|_  start_date: 2019-07-06 13:50:58

TRACEROUTE (using port 3389/tcp)
HOP RTT       ADDRESS
1   237.82 ms 10.10.14.1
2   237.74 ms 10.10.10.40

OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Sat Jul  6 14:29:45 2019 -- 1 IP address (1 host up) scanned in 116.66 seconds

The version of Windows is potentially vulnerable to Eternal Blue, so first of all I went ahead and browsed through all the SMB Shares available to me as a guest user and found nothing, thus, moved to looking for eternal blue in MSF.

A simple MSF scan confirmed that this box is most likely vulnerable to Eternal Blue. I continued and used the exploit from MSF to run eternal blue on the box.

Using the predefined exploit, I got root on the system.

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User Own

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Root Own

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Learning Outcome

Pay close attention to the version of the box you are working on, as this may for sure give out some important information about possible famous exploits that can be used.

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