169b80b3bc
- TravisCISource: scrapes public Travis CI build logs for API key leaks - GitHubActionsSource: searches Actions workflow logs (requires GitHub token) - CircleCISource: scrapes CircleCI pipeline logs (requires CircleCI token) - JenkinsSource: scrapes public Jenkins console output for leaked secrets - WaybackMachineSource: searches Wayback Machine CDX for archived key leaks - CommonCrawlSource: searches Common Crawl index for exposed pages - JSBundleSource: probes JS bundles for embedded API key literals
117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
package sources
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"regexp"
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"time"
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"golang.org/x/time/rate"
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"github.com/salvacybersec/keyhunter/pkg/providers"
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"github.com/salvacybersec/keyhunter/pkg/recon"
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)
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// JSBundleSource analyzes public JavaScript bundles for embedded API keys.
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// Modern build tools (Webpack, Vite, esbuild, Rollup) inline environment
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// variables and configuration at build time. This source probes common bundle
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// paths and scans the minified JS for API key patterns, complementing
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// WebpackSource by targeting raw key literals rather than env var prefixes.
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type JSBundleSource struct {
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BaseURL string
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Registry *providers.Registry
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Limiters *recon.LimiterRegistry
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Client *Client
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}
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var _ recon.ReconSource = (*JSBundleSource)(nil)
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func (s *JSBundleSource) Name() string { return "jsbundle" }
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func (s *JSBundleSource) RateLimit() rate.Limit { return rate.Every(3 * time.Second) }
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func (s *JSBundleSource) Burst() int { return 2 }
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func (s *JSBundleSource) RespectsRobots() bool { return true }
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func (s *JSBundleSource) Enabled(_ recon.Config) bool { return true }
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// jsBundleKeyPattern matches literal API key assignments commonly found in
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// minified JS bundles (e.g., apiKey:"sk-proj-...", "Authorization":"Bearer sk-...").
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var jsBundleKeyPattern = regexp.MustCompile(`(?i)(?:api[_-]?key|secret|token|authorization|bearer)\s*[=:"']+\s*['"]?([a-zA-Z0-9_\-]{20,})['"]?`)
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// jsBundlePaths are common locations for production JS bundles.
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var jsBundlePaths = []string{
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"/static/js/main.js",
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"/static/js/app.js",
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"/static/js/vendor.js",
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"/dist/app.js",
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"/dist/main.js",
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"/assets/app.js",
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"/assets/index.js",
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"/js/app.js",
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"/_next/static/chunks/main.js",
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"/_next/static/chunks/pages/_app.js",
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}
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func (s *JSBundleSource) Sweep(ctx context.Context, _ string, out chan<- recon.Finding) error {
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base := s.BaseURL
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if base == "" {
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return nil
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}
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client := s.Client
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if client == nil {
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client = NewClient()
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}
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queries := BuildQueries(s.Registry, "jsbundle")
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if len(queries) == 0 {
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return nil
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}
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for _, q := range queries {
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if err := ctx.Err(); err != nil {
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return err
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}
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for _, path := range jsBundlePaths {
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if err := ctx.Err(); err != nil {
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return err
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}
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if s.Limiters != nil {
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if err := s.Limiters.Wait(ctx, s.Name(), s.RateLimit(), s.Burst(), false); err != nil {
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return err
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}
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}
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probeURL := fmt.Sprintf("%s%s", base, path)
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, probeURL, nil)
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if err != nil {
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continue
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}
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resp, err := client.Do(ctx, req)
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if err != nil {
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continue
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}
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body, err := io.ReadAll(io.LimitReader(resp.Body, 1024*1024)) // 1MB max for JS bundles
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_ = resp.Body.Close()
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if err != nil {
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continue
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}
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if jsBundleKeyPattern.Match(body) {
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out <- recon.Finding{
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ProviderName: q,
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Source: probeURL,
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SourceType: "recon:jsbundle",
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Confidence: "medium",
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DetectedAt: time.Now(),
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}
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break // one finding per query is sufficient
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}
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}
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}
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return nil
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}
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