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ReverseEngineering

Empires: Dawn of the Modern World Keygen (source code)

by on Jun.05, 2020, under Programming, ReverseEngineering

Here’s some source code of the reverse engineered license key algorithm allowing you to pass the setup verification of Empires: Dawn of the Modern World.

Compile this C program using a compiler of your choice.

#include <stdlib.h>
#include <stdio.h>
#include <time.h>   

char* alphabet = "3489ACGHJKNPTWXZ";
int uniqueness = 0x00;

char nextChar() {
	int num = (uniqueness * 0x343fd) + 0x269ec3;
	uniqueness = num;
	return alphabet[((num >> 0x10) & 0x7fff) % 16];
}

int main(int argc, char* argv[]) {
	char serial[25];

	srand(clock());
	uniqueness = rand() % 0x5049EE;
	
	for(int i=0; i<20; i++) {
		if((i+1) % 5 == 0) {
			serial[i] = '-';
		}
		else{
			serial[i] = nextChar();
		}
	}

	serial[20] = 0x00;

	unsigned int num = 0;
	for(int i=0; i<= 0x12; i++) {
		if(serial[i] == '-') {
			continue;
		}

		num ^= serial[i];

		int j = 8;
		int tmp = j;

		do {
			if((num & 1) != 0) {
				num ^= 0x14002;
			}
			num = num >> 1;
			tmp = j;
			j--;
		} while(tmp != 1);
	}
	
	printf("Empires: Dawn of the Modern World Keygen\n");
	printf("------------------------\n");
	printf("%s", serial);
	printf("%04X\n", num);
	printf("------------------------\n");

	return 0;
}
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