Cheat-sheet: Foot Printing

HTB Academy - Footprinting Cheat Sheet

Infrastructure-based Enumeration
Command	Description
curl -s https://crt.sh/?q=<target-domain>&output=json | jq .	Certificate transparency.
for i in $(cat ip-addresses.txt); do shodan host $i; done	Scan each IP address in a list using Shodan.

Host-based Enumeration
FTP
Command	Description
ftp <FQDN/IP>	Interact with the FTP service on the target.
nc -nv <FQDN/IP> 21	Interact with the FTP service on the target.
telnet <FQDN/IP> 21	Interact with the FTP service on the target.
openssl s_client -connect <FQDN/IP>:21 -starttls ftp	Interact with the FTP service on the target using encrypted connection.
wget -m --no-passive ftp://anonymous:anonymous@<target>	Download all available files on the target FTP server.
SMB
smbclient -N -L //<FQDN/IP>	Null session authentication on SMB.
smbclient //<FQDN/IP>/<share>	Connect to a specific SMB share.
rpcclient -U "" <FQDN/IP>	Interaction with the target using RPC.
samrdump.py <FQDN/IP>	Username enumeration using Impacket scripts.
smbmap -H <FQDN/IP>	Enumerating SMB shares.
crackmapexec smb <FQDN/IP> --shares -u '' -p ''	Enumerating SMB shares using null session authentication.
enum4linux-ng.py <FQDN/IP> -A	SMB enumeration using enum4linux.
NFS
showmount -e <FQDN/IP>	Show available NFS shares.
mount -t nfs <FQDN/IP>:/<share> ./target-NFS/ -o nolock	Mount the specific NFS share to ./target-NFS
umount /target-NFS	Unmount the specific NFS share.
DNS
dig ns <domain.tld> @<nameserver>	NS request to the specific nameserver.
dig any <domain.tld> @<nameserver>	ANY request to the specific nameserver.
dig axfr <domain.tld> @<nameserver>	AXFR request to the specific nameserver.
dnsenum --dnsserver <nameserver> --enum -p 0 -s 0 -o found_subdomains.txt -f ~/subdomains.list <domain.tld>	Subdomain brute forcing.
SMTP
telnet <FQDN/IP> 25	Connect to the SMTP service.
IMAP/POP3
curl -k 'imaps://<FQDN/IP>' --user <user>:<password>	Log in to the IMAPS service using cURL.
openssl s_client -connect <FQDN/IP>:imaps	Connect to the IMAPS service.
openssl s_client -connect <FQDN/IP>:pop3s	Connect to the POP3s service.
SNMP
snmpwalk -v2c -c <community string> <FQDN/IP>	Querying OIDs using snmpwalk.
onesixtyone -c community-strings.list <FQDN/IP>	Bruteforcing community strings of the SNMP service.
braa <community string>@<FQDN/IP>:.1.*	Bruteforcing SNMP service OIDs.
MySQL
mysql -u <user> -p<password> -h <FQDN/IP>	Login to the MySQL server.
MSSQL
mssqlclient.py <user>@<FQDN/IP> windows-auth	Log in to the MSSQL server using Windows authentication.
Linux Remote Management
ssh-audit.py <FQDN/IP>	Remote security audit against the target SSH service.
ssh <user>@<FQDN/IP>	Log in to the SSH server using the SSH client.
ssh -i private.key <user>@<FQDN/IP>	Log in to the SSH server using private key.
ssh <user>@<FQDN/IP> -o PreferredAuthentications=password	Enforce password-based authentication.
Windows Remote Management
rdp-sec-check.pl <FQDN/IP>	Check the security settings of the RDP service.
xfreerdp /u: <user> /p:"<password>" /v: <FQDN/IP>	Log in to the RDP server from Linux.
evil-winrm -i <FQDN/IP> -u <user> -p <password>	Log in to the WinRM server.
wmiexec.py <user>:"<password>"@<FQDN/IP> " <system command>"	Execute command using the WMI service.
Oracle TNS
./odat.py all -s <FQDN/IP>	Perform a variety of scans to gather information about the Oracle database services and its components.
sqlplus <user>/<pass>@<FQDN/IP>/<db>	Log in to the Oracle database.
./odat.py utlfiles <FQDN/IP> -d <db> -U <user> -P <pass> --sysdba --putFile C:\\insert\\path file.txt ./file.txt	Upload a file with Oracle RDBMS.