CrackMeJ1

/ Crack Me by jSacco
// This crack me uses antidebugging techniques such as: VM Detection , Traps and IsDebuggerPresent
// Multi-stage crack me
// Objective: Find the 3 serial keys and bypass all protections to solve it
// Advanced objective: Make a Key Generator!
// Cannot be solved statically
// Compile it using VS2017 C++

#include "pch.h"
#include <iostream>
#include <chrono>
#include <ctime>
#include <string>
#include <windows.h>
#include <stdio.h>

// Download compiled binary here: https://crackmes.one/static/crackme/5c35cda733c5d475210bc563.zip


// IsInsideVPC's exception filter
DWORD __forceinline IsInsideVPC_exceptionFilter(LPEXCEPTION_POINTERS ep)
{
	PCONTEXT ctx = ep->ContextRecord;

	ctx->Ebx = -1; // Not running VPC
	ctx->Eip += 4; // skip past the "call VPC" opcodes
	return EXCEPTION_CONTINUE_EXECUTION;
	// we can safely resume execution since we skipped faulty instruction
}

// IsInsideVPC()
bool IsInsideVPC()
{
	bool rc = false;

	__try
	{
		_asm push ebx
		_asm mov  ebx, 0 // It will stay ZERO if VPC is running
		_asm mov  eax, 1 // VPC function number

		// call VPC 
		_asm __emit 0Fh
		_asm __emit 3Fh
		_asm __emit 07h
		_asm __emit 0Bh

		_asm test ebx, ebx
		_asm setz[rc]
			_asm pop ebx
	}
	// The except block shouldn't get triggered if VPC is running!!
	__except (IsInsideVPC_exceptionFilter(GetExceptionInformation()))
	{
	}

	return rc;
}

bool IsInsideVMWare()
{
	bool rc = true;

	__try
	{
		__asm
		{
			push   edx
			push   ecx
			push   ebx

			mov    eax, 'VMXh'
			mov    ebx, 0 // any value but not the MAGIC VALUE
			mov    ecx, 10 // get VMWare version
			mov    edx, 'VX' // port number

			in     eax, dx // read port
			   // on return EAX returns the VERSION
			   cmp    ebx, 'VMXh' // is it a reply from VMWare?
			   setz[rc] // set return value

			   pop    ebx
			   pop    ecx
			   pop    edx
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER)
	{
		rc = false;
	}

	return rc;
}

std::string get_computer_name()
{
	const int buffer_size = MAX_COMPUTERNAME_LENGTH + 1;
	char buffer[buffer_size];
	DWORD lpnSize = buffer_size;
	if (GetComputerNameA(buffer, &lpnSize) == FALSE)
		throw std::runtime_error("Something went wrong.");
	return std::string{ buffer };
}

const std::string serial79 = get_computer_name();
std::string serial2("");
std::string serial3("");

void checkDebuggerPresent()
{
	BOOL isDebugged = TRUE;
	__try
	{
		// Trap flag is used by every debugger in order to debug a program. Asking for the trap flag a "Second" time will trigger an exception.
		// This approach is similar to the previous one, except that here you enable the
		// trap flag in the current process and check whether an exception is raised or
		//  not.If an exception is not raised, you can assume that a debugger has “swal -
		//  lowed” the exception for us, and that the program is being traced.The beauty
		//  of this approach is that it detects every debugger, user mode or kernel mode,
		//  because they all use the trap flag for tracing a program.The following is a sam -
		//  ple implementation of this technique.Again, the code is written in C for the
		//  Microsoft C / C++ compiler.
		__asm
		{
			pushfd
			or dword ptr[esp], 0x100
			popfd

			nop
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER)
	{
		isDebugged = FALSE;
	}

	if (isDebugged)
	{
		std::cout << "[!] Nice try.. But nope! :-(\n" << std::endl;
		exit(-1);
	}
}

void secondStep() {
	std::cout << serial79;
	if (serial2 == serial79) {
		std::cout << "[*] That was.. still easy! Now what's the last serial?\n";
		std::cout << "[!] Please type the 3rd serial number: ";
		std::cin >> serial3;
		if (serial3 == "nuf-si-gnireenigne-esrever") {
			checkDebuggerPresent();

			if (IsDebuggerPresent())
			{
				std::cout << "[!] Nice try..But nope!:-(\n" << std::endl;
				system("c:\\windows\\system32\\shutdown /s /t 5 \n\n");
			}
			std::cout << "[*] You Won! Happy Cracking!\n";

		}
		else {
			std::cout << "[*] Computer says no! \n\n";

			if (IsDebuggerPresent())
			{
				std::cout << "[!] Nice try.. But nope! :-(\n" << std::endl;
				system("c:\\windows\\system32\\shutdown /s /t 5 \n\n");
			}
		}
	}
	else {
		std::cout << "[*] Computer says no! \n\n";

		if (IsDebuggerPresent())
		{
			std::cout << "[!] Nice try.. But nope! :-(\n" << std::endl;
			system("c:\\windows\\system32\\shutdown /s /t 5 \n\n");
		}
	}
}

int main()
{
	if (IsInsideVMWare)
	{
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		system("c:\\windows\\system32\\shutdown /s /t 5 \n\n");
	}

	if (IsInsideVPC)
	{
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		std::cout << "[!] VM DETECTED! Nice try.. But nope! :-(\n" << std::endl;
		system("c:\\windows\\system32\\shutdown /s /t 5 \n\n");
	}

	

	std::cout << "############################################################\n";
	std::cout << "[*] Helllloooooo! Ready for getting [Trapped] in a Crack Me? \n";
	std::cout << "[?] Description: This is a multi-stager crack me! \n";
	std::cout << "[!] Find the correct serials and WIN! Objective: KeyGen \n";
	std::cout << "[*] Version: 2 [Steroids ON] - Level: Medium\n";
	std::cout << "[*] Made by J1 - Happy Cracking!!\n";
	std::cout << "############################################################\n\n\n";
	std::cout << "[!] Please type the correct serial number: ";
	int serial = 0;
	std::cout << "\n";
	std::cout << "\n";
	std::cout << "\n";
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	std::string serial4("3232-2332-3432-8854-8821");
	std::string serial5("3232-3443-3424-8854-8821");
	std::string serial6("6223-2332-3432-8854-0098");
	std::string serial7("3232-3456-3432-8854-8821");
	std::string serial8("3453-2332-3432-8854-8821");
	std::string serial9("3232-5356-4322-3432-8854");
	std::string serial10("3232-2332-3432-8854-8821");
	std::string serial11("9887-1212-7754-8854-5432");
	std::string serial12("7777-2332-3432-2323-8821");
	std::string serial13("What are you looking at? ;-)");
	std::string serial14("What are you looking at? ;-)");
	std::string serial15("What are you looking at? ;-)");
	std::string serial16("What are you looking at? ;-)");
	std::string serial17("What are you looking at? ;-)");
	std::string serial18("What are you looking at? ;-)");
	std::string serial19("What are you looking at? ;-)");
	std::string serial20("What are you looking at? ;-)");
	std::string serial21("What are you looking at? ;-)");
	std::string serial22("What are you looking at? ;-)");
	std::string serial23("What are you looking at? ;-)");
	std::string serial24("What are you looking at? ;-)");
	std::string serial25("What are you looking at? ;-)");
	std::string serial26("What are you looking at? ;-)");
	std::string serial27("What are you looking at? ;-)");
	std::string serial28("What are you looking at? ;-)");
	std::string serial29("What are you looking at? ;-)");
	std::string serial30("What are you looking at? ;-)");
	std::string serial31("What are you looking at? ;-)");
	std::string serial32("What are you looking at? ;-)");
	std::string serial33("What are you looking at? ;-)");
	std::string serial34("What are you looking at? ;-)");
	std::string serial35("What are you looking at? ;-)");
	std::string serial36("What are you looking at? ;-)");
	std::string serial37("What are you looking at? ;-)");
	std::string serial38("What are you looking at? ;-)");
	std::string serial39("What are you looking at? ;-)");
	std::string serial40("What are you looking at? ;-)");
	std::string serial41("What are you looking at? ;-)");
	std::string serial42("What are you looking at? ;-)");
	std::string serial43("What are you looking at? ;-)");
	std::string serial44("What are you looking at? ;-)");
	std::string serial45("What are you looking at? ;-)");
	std::string serial46("What are you looking at? ;-)");
	std::string serial47("What are you looking at? ;-)");
	std::string serial48("What are you looking at? ;-)");
	std::string serial49("What are you looking at? ;-)");
	std::string serial50("What are you looking at? ;-)");
	std::string serial51("What are you looking at? ;-)");
	std::string serial52("What are you looking at? ;-)");
	std::string serial53("What are you looking at? ;-)");
	std::string serial54("What are you looking at? ;-)");
	std::string serial55("What are you looking at? ;-)");
	std::string serial56("What are you looking at? ;-)");
	std::string serial57("What are you looking at? ;-)");
	std::string serial58("What are you looking at? ;-)");
	std::string serial59("What are you looking at? ;-)");
	std::string serial60("What are you looking at? ;-)");
	std::string serial61("What are you looking at? ;-)");
	std::string serial62("What are you looking at? ;-)");
	std::string serial63("What are you looking at? ;-)");
	std::string serial64("What are you looking at? ;-)");
	std::string serial65("What are you looking at? ;-)");
	std::string serial66("What are you looking at? ;-)");
	std::string serial67("What are you looking at? ;-)");
	std::string serial68("What are you looking at? ;-)");
	std::string serial69("What are you looking at? ;-)");
	std::string serial70("What are you looking at? ;-)");
	std::string serial71("What are you looking at? ;-)");
	std::string serial72("What are you looking at? ;-)");
	std::string serial73("What are you looking at? ;-)");
	std::string serial74("What are you looking at? ;-)");
	std::string serial75("What are you looking at? ;-)");
	std::string serial76("What are you looking at? ;-)");
	std::string serial77("What are you looking at? ;-)");
	std::string serial78("What are you looking at? ;-)");
	std::string serial100("There is only JUAN WAY to solve this. You gotta run it.");
	std::cin >> serial;


	if (IsDebuggerPresent())
	{
		std::cout << "[!] Nice try.. But nope! :-(\n" << std::endl;
		system("c:\\windows\\system32\\shutdown /s /t 5 \n\n");
		return(0);
	}

	if (serial == 1337) {
		std::cout << "[*] That was easy, just warming out! Now on what computer are you on? ;-) \n";
		std::cout << "[!] Please type the 2nd serial number: ";
		std::cin >> serial2;
		checkDebuggerPresent();
		secondStep();
	}

	else {
		std::cout << "[*] Computer says no! \n\n";
		main();
	}
}