#HOW TO BUILD A KEYLOGGER HOW TO#
#HOW TO BUILD A KEYLOGGER CODE#
#HOW TO BUILD A KEYLOGGER PC#
#HOW TO BUILD A KEYLOGGER WINDOWS#

Maybe throw in some functions that will never be used like MessageBox.Дummy procedures to fake out benignity and also to create uniqueness to your program's overall structure.ДЄvoid using file operations if possible. Of course, if only these two functions exist int he import table, it could be suspicious simply because no normal program would only have these two functions. Obfuscate your import table by retrieving the WinAPI functions dynamically using LoadLibrary/ GetModuleHandle and then GetProcAddress. This will remove the potential resource-heaviness of the infinite while loop but do keep in mind that these other options I've provided may still raise flags. LowLevelKeyboardProc (the more common method AFAIK), or you could use Direct Input.

#HOW TO BUILD A KEYLOGGER WINDOWS#

There are other ways to capture keystrokes and I will give you two of them: learn to use global Windows hooks, i.e. functions.Дon't use the GetAsyncKeyState polling method. By using this, it removes the dependency on the AllocConsole, etc. For gcc, it's -mwindows, and for MSVC++, there is an option to select the subsystem type in the project's properties. I have to point out straight away that there is a way to make a windowless program and that is by compiling it with the WINDOWS subsystem flag. Uniqueness of the structure of the program and its control flow will destroy any signature-based detection like nothing.

#HOW TO BUILD A KEYLOGGER CODE#

The easiest way is to code it yourself, differently.

Your program doesn't do any of that and hence it would appear to be very suspicious because it's doing things under the radar and not reporting to let the user know. Why are games not flagged as malicious? Well, because they display windows, use graphics libraries like DirectX, they give some sort of feedback to the user. For example, games must capture keystrokes for input. AFAIK, AV may give 'positive reputation' on your binary if it shows possible non-malicious behaviour, I mean, these functions that Microsoft have provided must have a legitimate use, right? Yes, they do, but depending on the circumstance, the AV will 'judge' your program to see if conditions are met. No reasons are given that could make your binary seem benign. I don't know about you but when I tried this code, it would appear to sap one of my cores simply because of the resource-inefficiency of the infinite loop. Okay, so this one has been done since the Windows XP days where you enter an infinite loop and just sit there, polling. GetAsyncKeyState polling method to capture keystrokes.

The flow of the program with regards to function calls could trigger heuristics simply because of the fact that you're using GetAsyncKeyState and file operations. All of these can be detected in the import table of your static binary (they are wide open in plaintext, try opening your binary in a PE viewer and you'll see it). The AllocConsole, FindWindow and ShowWindow combination, again, may raise another flag because it is known to be abused to 'hide' the console window. The GetAsyncKeyState function may raise a flag because of how it could be abused to capture keystrokes. The WinAPI functions that exist in this code raises red flags everywhere. It's public code and from what I can see, the code (especially the ordering of functions/API calls and how it is put together overall) is extremely common so there's almost no doubt that the resulting binary will bear an existing signature that AV will detect. There are many reasons as to why your code is detected and just as many, or even more, ways to make it potentially undetected. Wow, this is reminds me very much of myself back when I was first starting to tamper with malware development. Do you know How should I make this more undectable, to bypass a small antivirus?

#HOW TO BUILD A KEYLOGGER PC#

It works fine, but when I tried it at my friendвЂ™s PC Windows Defender immediatly stopped it.

Stealth = FindWindowA('ConsoleWindowClass', NULL) So this is the programm : include include include include I know that this doesnвЂ™t make me a hacker but i think that a keylogger can be very dangerous and I want to perfect my technique. Hey guys! So i have this passion for hacking and I made (with help from internet) this

#HOW TO BUILD A KEYLOGGER HOW TO#

We teach you how to do it, use it at your own risk.

- See upcoming events and writeups from past CTFs.

- Privilege escalation over SSH, web exploitation.

- Learn-as-you-go web exploitation game made by a redditor.

- Interactive privilege escalation with browser-based bash shells (and much more).

How to build a keylogger