htb-perfection-pass/main.go

55 lines
1.2 KiB
Go

package main
import (
"fmt"
"log"
"os"
"strconv"
//"time"
)
// {firstname}_{firstname backwards}_{randomly generated integer between 1 and 1,000,000,000}
func main() {
if len(os.Args) != 4 {
fmt.Println("Usage: ./perfection-crack susan 1 1000000000")
os.Exit(0)
}
//fmt.Println(os.Args[1], os.Args[2], os.Args[3])
name := os.Args[1]
minNum := os.Args[2]
maxNum := os.Args[3]
minNumInt, _ := strconv.Atoi(minNum)
maxNumInt, _ := strconv.Atoi(maxNum)
writer(name, minNumInt, maxNumInt)
}
func reverseString(str string) (revStr string) {
strByte := []rune(str)
for i := len(strByte) - 1; i >= 0; i-- {
revStr += string(strByte[i])
}
return revStr
}
func writer(name string, low int, high int) {
file, err := os.OpenFile("./passwords.txt", os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0640)
if err != nil {
log.Fatalf("Error occurred: %v\n", err)
}
defer file.Close()
reverseName := reverseString(name)
nameToWrite := fmt.Sprintf("%v_%v_", name, reverseName)
//fmt.Println(name, reverseName, nameToWrite)
for i := low; i <= high; i++ {
fmt.Printf("Writing \"%v%v\" to passwords.txt...\n", nameToWrite, i)
file.WriteString(nameToWrite + fmt.Sprintln(i))
//time.Sleep(time.Millisecond * 50)
}
}