![]() ![]() You can obfuscate a sentence for example by using difficult to define words and complex word structure. The term itself is not solely related to writing code. When compiled it leads to the following asm code in the innermost loop of our factorial() function: Listing 29. technical definition of code obfuscation is to transform a working piece of code into a difficult to read and decipher logical equivalent of the original code in order to increase overall security on a web application. We DO want to keep them different, don’t we? To illustrate our approach, let’s take an extremely simplistic function which we want to obfuscate: //Listing 29.factorial.origįor(size_t i=1 i template, defined as follows: //Listing 29.obf Preliminaries – How Our Source Code Will Look It may sound too-good-to-be-true, but apparently, it is perfectly achievable at least in C++ let’s take a closer look at this technique. In other words – we’re aiming to have build-time code polymorphism. Make sure that even if source code stays the same – binary code changes a lot on each build.Make our binary code as-unreadable-as-possible.Keep our source code perfectly readable (and with minimal changes). ![]() ![]() To re-iterate – Brute-Force Attacks tend to start with identifying system calls (which are pretty much impossible to hide completely) – in the context of MOG it is usually a socket call after a system call is identified – the attacker goes up the call stack to get to the-place-of-interest-to-him (usually – starting from that-point-where-the-message-to-be-sent-over-the-socket-is-prepared, and going up from there).Īt this point, we’ll discuss one serious anti-hacking measure, which is aimed to: ![]() After we discussed Bot Fighting 101– 103 (which were about techniques which are commonly used, but are mostly inefficient against serious hackers), we can proceed to a much more interesting topic: how to increase resilience of our Client-Side program to those Brute-Force Attacks discussed in ] section above. ![]()
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