NOPs or NOP-sled are No Operation instructions that merely slide the program execution to the next memory address. We use NOPs to reach the desired place in the memory addresses. We supply NOPs commonly before the start of the shellcode to ensure its successful execution in the memory while performing no operations and just sliding through the memory addresses. The \x90 instruction represents a NOP instruction in the hexadecimal format.
Relevance of NOPs
Get Mastering Metasploit - Third Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
