注册机代码~

做看雪的crackme才看出差距，包含的东西比别的多。

这个ck没别的，用代码校验和来做反调试，于是下硬件断点，直接还原上代码

// Reverse11.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "windows.h"int _tmain(int argc, _TCHAR* argv[])
{char username[30] = { 0 };char password[30] = { 0 };scanf_s("%s", username, 30);scanf_s("%s", password, 30);BYTE v1 = 0;BYTE v2 = 0;char str[] = "ZWATRQLCGHPSXYENVBJDFKMU";if (password[1] != 'E' || strlen(password) != 0xa){printf_s("wrong");system("pause");return 0;}for (int i = 0; i < strlen(password); i++){if (password[i]<'A' || password[i]>'Z'){printf_s("wrong");system("pause");return 0;}}int temp1 = 0;for (int i = 0; i < strlen(username); i++){temp1 += username[i];}v1 = temp1 % 0x18;int temp2 = 0;for (int i = 0; i < 9; i++){temp2 += password[i];}v2 = temp2 / 0x9;if (v1 > 0x18)v1 -= 0x18;if (password[0] != str[v1]){printf_s("wrong");system("pause");return 0;}BYTE v3 = v1 + (v1 + 0x18);if (v3 > 0x18)v3 -= 0x18;if (password[2] != str[v3]){printf_s("wrong");system("pause");return 0;}for (int i = 2; i < 8; i++){v1 -= 0x41;v3 += v1;if (v3 > 0x18)v3 -= 0x18;if (password[i] != str[v3]){printf_s("wrong");system("pause");return 0;}}if (v2 == password[9]){printf_s("right");system("pause");return 0;}return 0;
}

转载于:https://www.cnblogs.com/distanceblog/p/5370449.html

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