bugcrowd Profile picture
14 Jan, 3 tweets, 1 min read
If you're hunting for low-hanging bugs in source code, grep and regex can help you to identify hotspots. For example, you might find basic rXSS in PHP with something like this:

grep -r "echo.*\$_\(GET\|REQUEST\|POST\)" .
Or to uncover potential SQL injection you could try:
grep -r "SELECT.*\\.\\ \\$" .
It will still take some manual work, but this can be a good way to focus your attention on the most obvious weak points.
To take this technique to the next level, checkout gf by @tomnomnom (github.com/tomnomnom/gf). For some more tasty regex ideas, checkout the Trufflehog regexes: (github.com/dxa4481/truffl…)

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