Deliverance 0.018-daf9452 File Descriptor Fuzzer

#!/usr/bin/bash# Marshall Whittaker / oxagast# A small file descriptor fuzzer.# IMPORTANT: This will trash things around the system, do not run unless it's contained in a VM.## Deliverance# noun#  1. the action of being rescued or set free.## Useage: ./deliverance.sh firefox# Note: Some processes will spin off other processes, for example with skype, you need to use# skypeforlinux as the program name to fuzz, as that is how it shows up in ps/pgrep.pn=$1;fuzz () {  rm open_fd fd;  while true;  do    for proc in $(ps aux | grep $pn | awk '//{print $2}');    do      find /proc/$proc/fd/ >> open_fd 2>/dev/null;    done;    pid=$(pgrep $pn);    for fd in $(cat open_fd | grep fd/[[:digit:]] | grep -v $$);    do      dd if=/dev/urandom bs=$blksize count=1 > junk.dat 2>/dev/null;      cp junk.dat junk.`date +%s`.dat      cat junk.dat > $fd;      find -type f  -type f -name "*.dat" -mmin +2 -exec rm {} +      if [[ $(pgrep -x $pn | wc -l) -lt 1 ]]; then        rm open_fd fd;        echo "Code: $pn";        echo "PID List:"        echo "$pid";        echo "Last used payload size: $blksize bytes";        echo "Fuzz data:";        hexdump -C junk.dat;        exit;      fi;    done;  done;  rm open_fd fd 2>/dev/null;}if [[ $# -gt 0 ]]; then  if [[ $# -eq 2 ]]; then     blksize=$2;  else blksize=256;  fi;  if [[ $(pgrep -x $pn | wc -l) -gt 0 ]]; then    echo "Fuzzing file descriptors of $pn";    fuzz  else    echo "The program specified needs to be running and have open file descriptors."    exit 1;  fi;else  echo "You need to supply a program name to fuzz.";  exit 1fi;