| 词条 | Code cave |
| 释义 |
}} A code cave is a series of null bytes in a process's memory. The code cave inside a process's memory is often a reference to a section of the code’s script functions that have capacity for the injection of custom instructions. For example, if a script’s memory allows for 5 bytes and only 3 bytes are used, then the remaining 2 bytes can be used to add external code to the script. Common usesThe concept of a code cave is often used by hackers to execute arbitrary code in a compiled program. It can be an extremely helpful tool to make additions and removals to a compiled program including the addition of dialog boxes, variable modification, or removal of software key validation checks. Often using a call instruction commonly found on many CPUs, the code jumps to the new subroutine and pushes the next address onto the stack. After execution of the subroutine, a return instruction can be used to pop the previous location off of the stack into the program counter. This allows the existing program to jump to the newly added code without making significant changes to the program itself. Advantages
Disadvantages
Tools
References1. ^http://www.codeproject.com/Articles/20240/The-Beginners-Guide-to-Codecaves The Beginners Guide to Codecaves - CodeProject 2. ^http://thelegendofrandom.com/blog/archives/tag/code-caveModifiying Binaries: Adding a Splash Dialog {{Webarchive|url=https://web.archive.org/web/20140407082907/http://thelegendofrandom.com/blog/archives/tag/code-cave# |date=2014-04-07 }} 3. ^http://eryanbot.com/jtp/2012/06/30/game-hacking-utilizing-code-caves/ Game Hacking-Utilizing Code Caves 4. ^http://www.progamercity.net/ghack-tut/164-guide-theories-methods-code-caves.html Theories and methods of Code-caves External links
3 : Process (computing)|Threads (computing)|Software cracking |
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