mirror of
https://github.com/trufflesecurity/trufflehog.git
synced 2024-09-20 22:51:55 +00:00
117 lines
3.5 KiB
Go
117 lines
3.5 KiB
Go
package kraken
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import (
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"context"
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"io"
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"net/http"
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"net/url"
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"regexp"
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"strconv"
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"strings"
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"time"
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"crypto/hmac"
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"crypto/sha256"
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"crypto/sha512"
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"encoding/base64"
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"github.com/trufflesecurity/trufflehog/v3/pkg/common"
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"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
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"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detectorspb"
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)
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type Scanner struct{}
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// Ensure the Scanner satisfies the interface at compile time
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var _ detectors.Detector = (*Scanner)(nil)
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var (
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client = common.SaneHttpClient()
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//Make sure that your group is surrounded in boundry characters such as below to reduce false positives
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//Bounds have been removed because there are some cases that tokens have trailing frontslash(/) or plus sign (+)
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keyPat = regexp.MustCompile(detectors.PrefixRegex([]string{"kraken"}) + `\b([0-9A-Za-z\/\+=]{56}[ "'\r\n]{1})`)
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privKeyPat = regexp.MustCompile(detectors.PrefixRegex([]string{"kraken"}) + `\b([0-9A-Za-z\/\+=]{86,88}[ "'\r\n]{1})`)
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)
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// Keywords are used for efficiently pre-filtering chunks.
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// Use identifiers in the secret preferably, or the provider name.
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func (s Scanner) Keywords() []string {
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return []string{"kraken"}
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}
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// FromData will find and optionally verify Kraken secrets in a given set of bytes.
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func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (results []detectors.Result, err error) {
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dataStr := string(data)
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matches := keyPat.FindAllStringSubmatch(dataStr, -1)
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privKeyMatches := privKeyPat.FindAllStringSubmatch(dataStr, -1)
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for _, match := range matches {
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if len(match) != 2 {
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continue
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}
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resMatch := strings.TrimSpace(match[1])
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for _, privKeyMatch := range privKeyMatches {
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if len(privKeyMatch) != 2 {
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continue
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}
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resPrivKeyMatch := strings.TrimSpace(privKeyMatch[1])
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_Kraken,
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Raw: []byte(resMatch),
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}
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if verify {
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//Increasing 64-bit integer, for each request that is made with a particular API key.
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apiNonce := strconv.FormatInt(time.Now().Unix(), 10)
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payload := url.Values{}
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payload.Add("nonce", apiNonce)
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b64DecodedSecret, _ := base64.StdEncoding.DecodeString(resPrivKeyMatch)
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signature := getKrakenSignature("/0/private/Balance", payload, b64DecodedSecret)
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req, _ := http.NewRequestWithContext(ctx, "POST", "https://api.kraken.com/0/private/Balance", strings.NewReader(payload.Encode()))
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req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
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req.Header.Add("API-Key", resMatch)
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req.Header.Add("API-Sign", signature)
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res, err := client.Do(req)
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if err == nil {
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defer res.Body.Close()
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out, _ := io.ReadAll(res.Body)
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if !strings.Contains(string(out), "Invalid key") {
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s1.Verified = true
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} else {
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// This function will check false positives for common test words, but also it will make sure the key appears 'random' enough to be a real key
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if detectors.IsKnownFalsePositive(resMatch, detectors.DefaultFalsePositives, true) {
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continue
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}
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}
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}
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}
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results = append(results, s1)
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}
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}
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return detectors.CleanResults(results), nil
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}
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//Code from https://docs.kraken.com/rest/#section/Authentication/Headers-and-Signature
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func getKrakenSignature(url_path string, values url.Values, secret []byte) string {
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sha := sha256.New()
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sha.Write([]byte(values.Get("nonce") + values.Encode()))
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shasum := sha.Sum(nil)
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mac := hmac.New(sha512.New, secret)
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mac.Write(append([]byte(url_path), shasum...))
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macsum := mac.Sum(nil)
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return base64.StdEncoding.EncodeToString(macsum)
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}
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