Created
May 31, 2019 04:44
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Finding the valid order of a secret message
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package main | |
import ( | |
"github.com/gitchander/permutation" | |
"encoding/hex" | |
"crypto/sha1" | |
"crypto/hmac" | |
"strings" | |
"fmt" | |
"os" | |
) | |
func main() { | |
secretKey := "9LXAVCxcITaABNK48pAVgc4muuTNJ4enIKS5YzKyGZ" | |
finalHash := "77cc91113efbcea99ea0d5b5450f3d159694d6a2" | |
params := []string{"bb0b4a65077f7385", "09XXXXXXXX", "m8J9IpbfSBZY3Kc4AYhUMriZrZa1jqZT5EdJp9LJFcv/OAaZagEAAA==", "123456", "ABCD", "1557465220750", "mobile"} | |
byteFinalHash, _ := hex.DecodeString(finalHash) | |
prmt := permutation.New(permutation.StringSlice(params)) | |
fmt.Println("Brute-forcing...") | |
for prmt.Next() { | |
secretMessage := strings.Join(params[:], "|") | |
mac := hmac.New(sha1.New, []byte(secretKey)) | |
mac.Write([]byte(secretMessage)) | |
digest := mac.Sum(nil) | |
if (hmac.Equal(byteFinalHash, digest)) { | |
fmt.Printf("\nFound a message pattern: %s\nKey: %s\nHash: %s\n", secretMessage, secretKey, hex.EncodeToString(byteFinalHash)) | |
os.Exit(0) | |
} | |
} | |
fmt.Println("Sorry, no pattern found") | |
} |
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