On 2012-12-17, sven falempin <[email protected]> wrote: > Hello misc readers, > > First, openBSD threads are awesome for debugging. > The trivial topic, > echo -ne "\x00" | nc XXXX port > send a null byte with a GNU echo. > > Echo in openbsd does not have -e (and does not warn whan i try it ..) > > Noob question: > How to send a null byte over netcat ? am i forced to use perl ?
you can use octal with echo(1) or printf(1). $ echo -n '\000' | hexdump -C 00000000 00 |.| 00000001 $ printf '\000' | hexdump -C 00000000 00 |.| 00000001

