有智慧的CrackMe

萌新的第一个CrackMe
https://www.52hb.com/thread-52041-1-1.html
(出处: 吾爱汇编论坛)



CrackMe下载地址：
下载地址：https://starrysp.lanzoui.com/i92mft585tg


下面是全部源码

[C] 纯文本查看 复制代码

#define  _CRT_SECURE_NO_WARNINGS 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include<time.h>
#include "decl.h"
int size1 = 256;
struct my_data
{
        char* buf;
        char* buf1;
        char* midstate;
        char* flag;
        int flagchange;
        int CNum;
        int flagTwo;
        int my_compareNum;
        int randNum;
}flag_All;
int my_mycompare() {
        my_compare();
        while (1)
        {
                if (flag_All.my_compareNum != -1) {
                        break;
                }
                my_compare();
        }
}
int  my_rand() {
        srand((unsigned)time(NULL));
        flag_All. randNum = rand() % 20;
        return EXIT_SUCCESS;
}

int My_malloc() {
                flag_All.buf = malloc(size1);
                flag_All.buf1 = malloc(size1);
                flag_All.midstate = malloc(size1);
        return EXIT_SUCCESS;
}
int init_data() {
        My_malloc();
        strcpy(flag_All.buf, "verygood\n");
        strcpy(flag_All.buf1, "nogodbad\n");
        strcpy(flag_All.midstate, "youcannotfindme\n");
        flag_All.flagchange = 0;
        flag_All.CNum = 3;
        return EXIT_SUCCESS;
}

int changeNum() {
        if (flag_All.flagchange == 1) {
                strcpy(flag_All.flag, flag_All.buf1);
        }
        else if(flag_All.flagchange==0)
        {
                strcpy(flag_All.flag, flag_All.buf);
        }
        else
        {

        }
        flag_All.flagchange = 666666;

        return EXIT_SUCCESS;
}

int init_rand() {
        my_mycompare();
        
        if ( flag_All.my_compareNum== 1) {
                flag_All.flag = malloc(size1);
                strcpy(flag_All.flag, flag_All.buf);
                flag_All.flagchange = 1;
                return EXIT_SUCCESS;
        }
        else if (flag_All.my_compareNum == 0)
        {
                        
                flag_All.flag = malloc(size1);
                strcpy(flag_All.flag, flag_All.buf1);
                flag_All.flagchange = 0;
                return EXIT_SUCCESS;
        }
        return EXIT_FAILURE;
}
int free_mem(struct my_data *mydata){

        if (mydata->buf != NULL) {

                free(mydata->buf);
        }
        if (mydata->buf1 != NULL) {
                free(mydata->buf1);
        }
        if (mydata->flag != NULL) {
                free(mydata->flag);
        }
        if (mydata->midstate != NULL) {

                free(mydata->midstate);
        }
        return EXIT_SUCCESS;
}
int main() {
        printf("%s\n", "本cm由白云点缀的蓝编写");
        init_data();
        init_rand();
        char buf[256] = {0};
        while (1)
        {        
                memset(buf,0,256);
                if (flag_All.CNum <= 0) {
                        break;
                }
                fgets(buf, size1,stdin);
                if (strcmp(flag_All.flag, buf) ==0 ) {
                        my_mycompare();
                        if (flag_All.flagchange == 666666||flag_All.flagTwo==1) {
                                printf("恭喜你，成功了\n");
                                break;
                        }
                        else if (flag_All.my_compareNum) {
                                printf("恭喜你，成功了\n");
                                break;
                        }
                        else
                        {
                                flag_All.CNum--;
                                if(!(flag_All.flagTwo == 1))
                                changeNum();
                                printf("失败了，不要灰心\n你还有%d次机会\n", flag_All.CNum);
                        }
                }
                else
                {        
                        flag_All.flagTwo=1;
                        flag_All.CNum--;
                        printf("失败了，不要灰心\n你还有%d次机会\n", flag_All.CNum);
                }
        }

        free_mem(&flag_All);
        system("pause");
        return EXIT_SUCCESS;

}

int my_compare() {
        my_rand();
        if (flag_All.randNum > 10) {
                flag_All.my_compareNum= 0;
        }
        else if(flag_All.randNum <10)
        {
                flag_All.my_compareNum= 1;
        }
        else
        {
                flag_All.my_compareNum = -1;
        }
        return -1;
}

[C] 纯文本查看 复制代码

#pragma once
extern int my_rand();
extern int init_data();
extern int init_rand();
extern int my_compare();
extern int changeNum();
extern int free_mem(struct my_data* mydata);
extern int My_malloc();
extern int my_mycompare();

感谢楼主

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谢谢大神的奉献

我现在已经把楼主作为我的学习目标了！

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可以多发一些这类内容吗？我很喜欢！！

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支持一波~~

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