Understanding software shelling

Shelling generally refers to the method to protect program resources, which can be protected by the EXE executable files compiled by us. For example:
1. Some copyright information needs to be protected without any modification, such as the author's name. To protect the software from being cracked, shells are usually used for protection. 2. You need to make the program a little easier to use. Therefore, some software is required to compress the executable files of exe.

Shelling description:

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There are many shell tools. For example, ASPack, UPX, and pecompact.

But it is worth noting that, with shield, there is naturally a spear. When the program after shelling is not strong enough, it can be lifted by the shelling program. Common shelling tools: (1) ASPack:
Most of them are used, but as long as unaspack or pedump32 is used for shelling (2) asprotect + ASPack: Second, foreign software is used for shelling and SoftICE + icedump is used for shelling, A certain amount of professional knowledge is required, but the latest version cannot be used. (3) UPX: You can use UPX to shell out, but pay attention to the version consistency. Use the-D parameter.