Dumb fuzzer

seq.sh

#!/bin/bash

# Prints n (100 by default) secuential little-endian \x escaped hex numbers, starting from argv[1]. 
# Invocation:
#   ./seq.sh hex_number_as_string [count=100]
#   ./seq.sh ffffdd30 10

esp="$1"
count=${2:-100}

for i in $(seq $count); do
    esp=$((0x$esp + 0x8));
    esp=$(printf "%x\n" $esp)
    echo -e "\\x${esp:6:2}\\x${esp:4:2}\\x${esp:2:2}\\x${esp:0:2}"
done