👑 Privesc - 3

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📖 Énoncé du challenge

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#define BUFFER_SIZE 1024

int main(int argc, char **argv){
    char userinput[BUFFER_SIZE] = {0};
    char buffer[BUFFER_SIZE]    = {0};

    printf("Password: ");
    fgets(userinput, BUFFER_SIZE, stdin);
    userinput[strlen(userinput) - 1] = '\0'; // strip \n

    printf("User input: %s\n", userinput);
    FILE *f = fopen("./flag.txt","r");
    if (f) {
        fgets(buffer, BUFFER_SIZE, f);
    }

    if (strcmp(userinput,buffer) == 0) {
        printf("You can validate with: ");
        execlp("cat","cat","./flag.txt",NULL);
    } else {
        puts("Wrong Password");
    }

    return 0;
}

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