[SOLUCIONADO] Backdoor Servidor web

Hola Acabo de subir una shell basica desde una pagina web y necesito meterle un backdoor pensaba hacérselo con nc dajaba escuchando la pagina y yo me conectaba desde mi pc.

Pero no tiene Netcat. coomo puedo backdorizar la pagina.

Por sierto estoy desde una red wifi robada asi que tengo una ip privada y hace nat el router.



Solo tengo estos comando a mi disposicion


job_spec [&]                            history [-c] [-d offset] [n] or hist>
(( expression ))                        if COMMANDS; then COMMANDS; [ elif C>
. filename [arguments]                  jobs [-lnprs] [jobspec ...] or jobs >
:                                       kill [-s sigspec | -n signum | -sigs>
[ arg... ]                              let arg [arg ...]
[[ expression ]]                        local [option] name[=value] ...
alias [-p] [name[=value] ... ]          logout [n]
bg [job_spec ...]                       mapfile [-n count] [-O origin] [-s c>
bind [-lpvsPVS] [-m keymap] [-f filen>  popd [-n] [+N | -N]
break [n]                               printf [-v var] format [arguments]
builtin [shell-builtin [arg ...]]       pushd [-n] [+N | -N | dir]
caller [expr]                           pwd [-LP]
case WORD in [PATTERN [| PATTERN]...)>  read [-ers] [-a array] [-d delim] [->
cd [-L|-P] [dir]                        readarray [-n count] [-O origin] [-s>
command [-pVv] command [arg ...]        readonly [-af] [name[=value] ...] or>
compgen [-abcdefgjksuv] [-o option]  >  return [n]
complete [-abcdefgjksuv] [-pr] [-DE] >  select NAME [in WORDS ... ;] do COMM>
compopt [-o|+o option] [-DE] [name ..>  set [--abefhkmnptuvxBCHP] [-o option>
continue [n]                            shift [n]
coproc [NAME] command [redirections]    shopt [-pqsu] [-o] [optname ...]
declare [-aAfFilrtux] [-p] [name[=val>  source filename [arguments]
dirs [-clpv] [+N] [-N]                  suspend [-f]
disown [-h] [-ar] [jobspec ...]         test [expr]
echo [-neE] [arg ...]                   time [-p] pipeline
enable [-a] [-dnps] [-f filename] [na>  times
eval [arg ...]                          trap [-lp] [[arg] signal_spec ...]
exec [-cl] [-a name] [command [argume>  true
exit [n]                                type [-afptP] name [name ...]
export [-fn] [name[=value] ...] or ex>  typeset [-aAfFilrtux] [-p] name[=val>
false                                   ulimit [-SHacdefilmnpqrstuvx] [limit>
fc [-e ename] [-lnr] [first] [last] o>  umask [-p] [-S] [mode]
fg [job_spec]                           unalias [-a] name [name ...]
for NAME [in WORDS ... ] ; do COMMAND>  unset [-f] [-v] [name ...]
for (( exp1; exp2; exp3 )); do COMMAN>  until COMMANDS; do COMMANDS; done
function name { COMMANDS ; } or name >  variables - Names and meanings of so>
getopts optstring name [arg]            wait [id]
hash [-lr] [-p pathname] [-dt] [name >  while COMMANDS; do COMMANDS; done
help [-dms] [pattern ...]               { COMMANDS ; }

No se si tendrás acceso a public_html (Supongo que si, sino como habrás subido la shell? XD), pero podrías dejar una pequeña shell PHP en algún lugar semi-escondido del server.