DOS自覆盖执行文件修改的新方法

A NEW MPROACH FOR MODIFICATION OF DOS SELF-OVERRIDE EXCUTABLE FILES

本文作者在深入研究了ＤＯＳ内核的基础上，提出了一种修改可执行文件的新方法，该方法除可修改一般可执行文件以外，还解决了自覆盖文件的修改问题，该法可广泛适用于软件加密、解密技术中。

There are two type of executable files in MS-DOS,COM and EXE type. For some special purpose, Software developers want to add some codes to the file and not affect its normal functions. A new modification approach for the executable files, not only for normal ones but also self-overlay ones, is discussed in this paper, which can be widely used for software encryption and decryption.