C++ (Cpp) give_shell Examples

Example #1

File: fermat.c Project: englertjoseph/IceCTF

int main(int argc, char **argv){
    int *ptr = &secret;
    printf(argv[1]);
    if (secret == 1337){
        give_shell();
    }
    return 0;
}

Example #2

File: overflow1.c Project: 2089764/write-ups-2016

void vuln(char *input)
{
	char buf[16];
	int secret = 0;
	strcpy(buf, input);

	if (secret == 0xDEADBEEF)
	{
		give_shell();
	}
	else
	{
		printf("Sorry, secret = 0x%08X\n", secret);
	}
}

Example #3

File: overflow2.c Project: rajiv2790/Pico2014_Problems

void vuln(){

    char buf[16];
    int fd;
    int secret = 0;
    printf("Read from file\n");
    
    fd = open("./input.txt", O_RDONLY);
    read(fd, buf, 32);
    close(fd);

    if (secret == 0xc0deface){
        give_shell();
    }
    else{
        printf("The secret is %x\n", secret);
    }
}