23 - Pentesting Telnet

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Mchakato wa haraka wa kutathmini udhaifu & kupenya. Fanya pentest kamili kutoka mahali popote na zana 20+ & vipengele vinavyotoka kwenye recon hadi ripoti. Hatubadilishi wapimaji wa udhaifu - tunatengeneza zana maalum, moduli za kugundua & kutumia ili kuwapa muda wa kuchimba zaidi, kufungua shells, na kufurahia.

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Taarifa za Msingi

Telnet ni protokali ya mtandao inayowapa watumiaji njia isiyo salama ya kufikia kompyuta kupitia mtandao.

Bandari ya kawaida: 23

23/tcp open  telnet

Uhesabu

Kuchukua Bango

nc -vn <IP> 23

Mchango wote wa kuvutia unaweza kufanywa na nmap:

nmap -n -sV -Pn --script "*telnet* and safe" -p 23 <IP>

The script telnet-ntlm-info.nse itapata taarifa za NTLM (matoleo ya Windows).

Kutoka kwenye telnet RFC: Katika Protokali ya TELNET kuna "chaguzi" mbalimbali ambazo zitaidhinishwa na zinaweza kutumika na muundo wa "FANYA, USIFANYE, ITAFANYIKA, HAITAFANYIKA" ili kuruhusu mtumiaji na seva kukubaliana kutumia seti ya makubaliano ya kina (au labda tofauti tu) kwa ajili ya muunganisho wao wa TELNET. Chaguzi kama hizo zinaweza kujumuisha kubadilisha seti ya wahusika, hali ya echo, n.k.

Ninajua inawezekana kuhesabu chaguzi hizi lakini sijui jinsi, hivyo nijulishe kama unajua jinsi.

Brute force

Faili ya usanidi

/etc/inetd.conf
/etc/xinetd.d/telnet
/etc/xinetd.d/stelnet

HackTricks Amri za Otomatiki

Protocol_Name: Telnet    #Protocol Abbreviation if there is one.
Port_Number:  23     #Comma separated if there is more than one.
Protocol_Description: Telnet          #Protocol Abbreviation Spelled out

Entry_1:
Name: Notes
Description: Notes for t=Telnet
Note: |
wireshark to hear creds being passed
tcp.port == 23 and ip.addr != myip

https://book.hacktricks.xyz/pentesting/pentesting-telnet

Entry_2:
Name: Banner Grab
Description: Grab Telnet Banner
Command: nc -vn {IP} 23

Entry_3:
Name: Nmap with scripts
Description: Run nmap scripts for telnet
Command: nmap -n -sV -Pn --script "*telnet*" -p 23 {IP}

Entry_4:
Name: consoleless mfs enumeration
Description: Telnet enumeration without the need to run msfconsole
Note: sourced from https://github.com/carlospolop/legion
Command: msfconsole -q -x 'use auxiliary/scanner/telnet/telnet_version; set RHOSTS {IP}; set RPORT 23; run; exit' && msfconsole -q -x 'use auxiliary/scanner/telnet/brocade_enable_login; set RHOSTS {IP}; set RPORT 23; run; exit' && msfconsole -q -x 'use auxiliary/scanner/telnet/telnet_encrypt_overflow; set RHOSTS {IP}; set RPORT 23; run; exit' && msfconsole -q -x 'use auxiliary/scanner/telnet/telnet_ruggedcom; set RHOSTS {IP}; set RPORT 23; run; exit'

Mchakato wa haraka wa kutathmini udhaifu & upimaji wa penya. Fanya upimaji kamili kutoka mahali popote kwa zana 20+ na vipengele vinavyotoka kwenye utafiti hadi ripoti. Hatubadilishi wapimaji wa udhaifu - tunatengeneza zana maalum, moduli za kugundua na kutumia ili kuwapa muda wa kuchimba zaidi, kufungua shells, na kufurahia.