More fun with ELF files and GoLang - Code Caves
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Finding code caves in ELF binaries with GoLang
A code cave is a piece of code that is written to a process's memory by another program. The code can be executed by creating a remote thread within the target process. The Code cave of a code 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.