linux环境下运用汇编语言实现端口监听，并运用objdump工具抽取机器码，再shellcode一下，实现另一种方式监听 -linux environment, the use of assembly language port monitor, and use objdump tool to extract the machine code, then look shellcode, another way to monitor implementation

Ignore objdump errors for Linux v2.13.6.