get your unrealsoftware password from <cs2d>/sys/usgn_pw.dat

usgn_decrypt.c

#include <stdio.h>

int main(void)
{
	FILE *pw = fopen("usgn_pw.dat", "rb");
	if (pw == NULL) {
		printf("Put me in the same folder as usgn_pw.dat!\n\nPress enter to exit...");
		getchar();
		return 1;
	}
	char usgnpw[127];
	fgets(usgnpw, 127, pw);
	fclose(pw);

	printf("Your USGN password is:\n");

	char key[] = {0x61, 0x58, 0x5F, 0xFD, 0x3F, 0x2E, 0x21, 0x6F, 0x59, 0x7A, 0x50, 0x6B, 0x6C};
	int i;
	for (i = 0; usgnpw[i + 2] != '\0'; i++) {
		printf("%c", usgnpw[i] - key[i % 13]);
	}

	printf("\n\nPress enter to exit...");
	getchar();
	return 0;
}

no w xD