This Time Font hunt you down in 4 bytes

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This Time Font hunt you down in 4 bytes
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In our recent work we targeted also win32k, what seems to be fruit giving target. @promised lu made our own TTF-fuzzer which comes with bunch of results in form of gigabytes of crashes and various bugs. Fortunately windows make great work and in February most of our bugs was dead - patched, but not all of them… Whats left were looking as seemingly unexploitable kernel bugs with ridiculous conditions. We decided to check it out, and finally combine it with our user mode bug & emet bypass. Through IE & flash we break down system and pointed out at weak points in defensive mechanism. In this talk we will present our research dedicated for pwn2own event this year. We will describe kernel part of exploit in detail, including bug description, resulting memory corruption conditions & caveats up to final pwn via one of our TTF bugs. Throughout the talk we will describe how to break various exploit mitigations in windows kernel and why it is possible. We will introduce novel kernel exploitation techniques breaking all what stands and bring you SYSTEM exec (from kernel driver to system calc).
Fitness function Cuboid Exploit (computer security)
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Multiplication sign Direction (geometry) Materialization (paranormal) Set (mathematics) Student's t-test Computer font Event horizon Exploit (computer security) Parsing Medical imaging Mathematics Semiconductor memory Quantum System programming Right angle Summierbarkeit Iteration Endliche Modelltheorie Proxy server Family Condition number
Group action Building Sign (mathematics) Block (periodic table) State of matter Sheaf (mathematics) Cuboid Right angle Lattice (order)
Web page Game controller Building Information Computer file File format Execution unit Sheaf (mathematics) Sampling (statistics) Planning Insertion loss System call Category of being Kernel (computing) Bit rate Touch typing Table (information)
Web page Arm Link (knot theory) Information Workstation <Musikinstrument> Bit Maxima and minima Mereology Element (mathematics) Spring (hydrology) Process (computing) Strategy game Semiconductor memory Personal digital assistant Telecommunication Object (grammar) Spacetime
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Web page Dataflow Game controller Graph (mathematics) 40 (number) Real number Patch (Unix) Cellular automaton Set (mathematics) Function (mathematics) Dew point Particle system Protein folding Mathematics Arithmetic mean Data storage device Semiconductor memory Calculation Website Mathematical optimization Condition number Spacetime
Point (geometry) Email Game controller Mapping Bit Disk read-and-write head Number Bit rate Semiconductor memory Buffer solution Right angle Data structure Object (grammar) Endliche Modelltheorie Resource allocation
Point (geometry) Functional (mathematics) State of matter Plotter Set (mathematics) Raster graphics Disk read-and-write head Mereology Rule of inference Mathematics Semiconductor memory Endliche Modelltheorie Metropolitan area network Email Arm Mapping Block (periodic table) Cellular automaton Sampling (statistics) Bit Sequence Category of being Pointer (computer programming) Kernel (computing) Personal digital assistant Buffer solution Website Right angle
Dataflow Standard deviation Randomization Serial port Graph (mathematics) Patch (Unix) Bit Machine vision Revision control Causality Meeting/Interview Semiconductor memory System programming Endliche Modelltheorie Data compression Information security Spacetime
Point (geometry) Default (computer science) Momentum Mapping Multiplication sign Tournament (medieval) Execution unit Sheaf (mathematics) Bit Multilateration Exploit (computer security) Computer programming Product (business) Goodness of fit Process (computing) Pointer (computer programming) Bit rate Right angle Game theory Metropolitan area network Condition number Spacetime
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Web page Point (geometry) Functional (mathematics) Game controller Vapor barrier Link (knot theory) Observational study Translation (relic) Insertion loss Online help Parameter (computer programming) Code Non-volatile memory Goodness of fit Semiconductor memory Oval User interface Seitentabelle Cellular automaton Sound effect Special unitary group Leak Message passing Arithmetic mean Pointer (computer programming) Process (computing) Vector space Angle Network topology Right angle Procedural programming Table (information) Window
Point (geometry) Functional (mathematics) Game controller Digital electronics Bit Parameter (computer programming) Menu (computing) Symbol table Arithmetic mean Message passing Pointer (computer programming) Vector space Angle Semiconductor memory Radio-frequency identification Funktionspunktmethode Summierbarkeit Table (information) Hydraulic jump Address space
Point (geometry) Functional (mathematics) Context awareness Group action Computer file Length State of matter Code Multiplication sign Real number Virtual machine Mathematics CAN bus Different (Kate Ryan album) Semiconductor memory Endliche Modelltheorie Extension (kinesiology) Resource allocation Mapping Sound effect Pointer (computer programming) Linearization Summierbarkeit Right angle Object (grammar) Table (information) Asynchronous Transfer Mode
Addition Game controller Group action Multiplication sign Connectivity (graph theory) Open set System call Subset Mathematics Arithmetic mean Angle Semiconductor memory Right angle Hydraulic jump
Ocean current Presentation of a group Digital electronics Link (knot theory) Cellular automaton Execution unit Staff (military) Raster graphics Price index Event horizon Rule of inference Arithmetic mean Process (computing) System programming Cuboid Right angle Damping Summierbarkeit Information security Address space Position operator
Presentation of a group Connectivity (graph theory) Multiplication sign Orientation (vector space) Plastikkarte Website Summierbarkeit
you have a good fit to the and the the and you know so I I I I I I I hand-labeled and talk about some to give exploitation and I hope I'm not too much about I find by and but some are like adults of on the box Our would need to exploit the back and some techniques how to get can always occasionally not to just stand up like the of the soul is basically
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if you are in trouble even then you have you should be doing shovel even when you have full text full rates and right there with the cardinal because now you have seldom gaps in kennel and the same time it's on the mice so these units freedom right the canal you owe purely afraid to touch anything because it can crash the but in fact it's and for these you can overcome this injured by some painfully back in the 2 because they butts i'm because it means that use their own uh it's a sound is solved exploited because its 2nd back just for leaking some information about out the but in fact it's when you have a right to Kremlin worrying currently you can only buy positive that using in this these features because we can use for example what is added here is eating the instructions and the books some he wanted to can no and each point on the point and you can arsenic was a reading the droughts where there are where is the model-based so only met a scarce fire ants you are not separated from the home of the gets patient the more or you can use it some on the old main how known and it's nice technique the and the
technique is also this doesn't love and the values it feels because in 2nd to give back come and do it for all other being product that every year and using for the debates and so they will use this technique in because they use the on as you your is it the section the as mu 0 OK I want because it was pointed tournament the gunwale anymore so but I was lazy who implements the find some taking graphene Pimentel these formant I'd like it's so was so looking for some on the feature out throughout world and it's seen and a fast because have some temperature and as a member of that in the past using the good article about some popular with exploitation and was but amounts in 2011 but I was for that use politics but in fact it is a fixed i in the EC some might be feature that conditioning form and then you can look at these you eat the point is from the canal from that fund them to because the only thing you need is down very it's the single public single from the is if fitted to the l and then you can aid the pointers from the candle and so and selling them taking the base of the session pool is silly problem i'm because is adversely man in this cabinet 64 bit space and can as as the than initially a problem gaps and your mind problem is to get some light the and especially when it gets session vol . us so I think it's silly game over I will show later wine yeah and big and sound at the end of reason before because of the then them addressed to the session pool you can use the default the that sound Our you're back to fully rights before for the big maps is if it is shown and except that you really the point as long sessions based you can read more and you can find tools of pro point us to the process the and that it's that you can end up the subject in top later because the you have already left for a full rewrite the canal ensues you known point us to but you process so what needs to basically just bash some token in your impetus and what's the problem it's extending goods but not with that because of goal the program to get some cannot coats execution because I think it's more serious issue and
Strogatz own system optimal distribution units felt jumping the penalty your own and 1 of them would scanned the cell is best able but toolkit something different so for example you have Theorem some function this hand values some in it and use message goal and the inside to the because you have something in this fashion it's really called and zone this talk is based on the summit of able to recall Table some there was some function pointers which is the rights that section of the mean for that OK so infects infuriating before we can just all right on this point us it will be some function because he's such a simple Siskel and you can just see the cute some cold and bicycle bias are surprise abilities but now this you can't because if introduce a what's fries remote execution dimension that means that's when you in the skull your internal and when when you want to jump to the motes quotes you know just panic because it's not told you can just the the the supervisor and privileges depend just jump in our the proviso of space so you cannot execute and code from to them the power and also the player in this is a maybe votes and able yeah surrounding knows but quantities these so if all the problems that so you have to and some yes a promise me that can surprise among quotes in want to touch some nothing is a all to be cannot because is is the user motive to read together from the user modes or some mapping from the user model can now and then you can and
at solids makes him this room on mitigation so powerful is also income initially flows it not the norm executes like although OK shells because that means that you can gold is basically they're coded up and only 1 difference is that it's not likely the executive and this time could fly can make fairly difference that between them that the and cold as now you will be on
bypass the on in this form the reordered that does that isn't being the 3 that function so the sets and get the GetBitmapBits because basically you can port some your control it's not that to panel must still you cannot say executed because if a summit being and you have also all if I said these OK because you know it's you that is a kennel but if knowledge could and then it can jump it's the it's because it's executable memory and so you can look at the you can play it's because you can now you have 4 sorry the rights of the panel and you can still use the page tables and you cannot the base tables and other debate between tree and those barriers as shown by some research not so long to on our it's also in some but the protection of some of some protection implanted for example a good chance on that it cannot you leave and surprise codes easier out there are out there to the base tables so that was kind I enforce the SMAP being so much of the candle on Windows you have with functions 6 old people and you Alcatel also are executes even in our in this friends so forking so don't to this function directly and remember that to be a full can right so we can use some as a appears for example some about some function pointer and 2 invokes the school and jumping in those functional and took it can help memory boats you have 2 problems you need so when the sound is all people and provide some out by documents 1st these you need to provide them with flakes and this like who should be free to write in the table as a constant you need down leak harm Dodgers we'll be allocated because located you just you can call the sun's Siskel and all let's say you're it addictive Excel capable and invoke it in memory but you don't know where the memories because of link them when the MCE can be a problem and to use a loss of pride that the ability is acute page the it is a good deal page the but for these you can use with Richard not treating because soccer and the user message goats and and there's a message goal I use some proposed because it can be at 1st fairly easily thrown out from the resembles 2nd thing is that some in the middle it's contains the process set them on the talk all the 1st think for think is that's for our delta hungry local is directly copied says a return to the most studies venue our worry right some function individual table 2 eggs or people you will you are able to leak delicate and vector you must OK problem OK now we can allocate memory you can make that point but you need to be also is a good people read and write and for the standard provides those likes and so as it is again the that's our 1st our 2nd argument is OK 2nd opments sees provided from resembles the further arguments East angle and many this is called the 1st argument is Engels living the good and and like I always felt by date it in the procedure which trust which stars like the sandal to can pointer and this can of pointer is provided as a 1st i Woman looms they local and that means many are able to I gets some medical reason be the translation and are translated to link cannot pointer which them into packets many looks as if like it that it's slightly favored acute you can mean the let's how effect it Europe can believe intriguing but in fact the reason so
intriguing because I think about it at all East India the rights is so on gets the mean the land on which you base pairing are great cell the windows and so for W. called dissipated as its all and so if you want to 1 and do it's no underlying goal and also because you can use In this function in
the function it is on the trick you can provide not just it 1st will not sorry right before Excel pit bull pointer but you will provide the sum of the function which returns you the 1st argument so that means then you provides I'll you don't some handle being the all the village aspects of the canal at point a and this on the talk allele bit this point of the vector you so that means that you're
menu look bingo and it provides I 2 and the user message goal you will leak their address of this mean knowing the kind of and then you can check if mendicancy when it can organize the flocking say circuit about bitable and DP-based men's our Englebert meanings and this angle you can allocate so you can change the point you can change on the point the function point at the points to exalt people and you what you allocate the be the symbol other side you want and these memory and a bit but they could table with size he wants and it will this point a big deal and a that you have read write memory in which we reduce already for Americans pointers and you can write to the spot in memory your control that the beach you can make the i jump to to that and so are equal and that's on the articles they found the feature because anyone are some can't afford think what's it's called a full what's which means that you cannot to jump OK somebody talk what's Eating point the kennel for now it is and so well let's let's the full important can on working and so that means that when you are invoking the kind of some talk all will be checked before in this address Eliza is is in summer exerts its youth about function and its can be used in some rhetorical and if it's not independent its it's things OK yeah but the facts about
effect this wonderful worked it's only in town our corpus some old and some idea of the error be but there were these scandals and so and but it's it's a and thus all this handle this he shortens error be sure and you to some extent said at the beginning but then look at the different group and that's are you can exploit some Our these people post we just also some I functions but they provide some of the function that is supposed to be called that means you can some of the change in the states of your machine and so for example a can and then you have vise of linear free the canal you can you can call for example this is total many many times you can or I disappointement times and some of the functions and so you can go step by step to the to make some tools some some model the make state he wants the week some pointers to set some memory it will be neglected will perceive some I repeat that appear you make some air we change and just single Cisco and looked eagerly all MP Chen and you gold some chemical that usual mother the it'll be more steps that if you look your change point the lose some something for you and then you will change it again you will call the kennel again and will change the context again and you will be billed times and achieved the logic and at the end this you can and hopefully get some collocates COLT execution it will be somehow complicated and you need to find somebody said functions which is saying is that for example under the null and for example that seem out taking come getting kelp execute and getting inculcated there are advantages to the Bhopal the use exactly this kind of our function function the fact that the bright just by function pointers not send me that I use their own hourly easy function that that the way they won't say will still using and will likely that it that this those functions of the military threat invites functionals modes OK that those things for me that it would be next time will be more harder but they need to find more functions due to it's more step by step is obnoxious directly for example deleting memory or just just all getting money on the 1st step but I can somehow of loading because plentiful foregut what is not exactly about the con conscious of on Contra for integrating just scare OK you from a copper-zinc with just some I think the functions is not the for the plasmon jet this objects have only for the subjective some articles is some was signals from global loading up the sum of the function of there and that length that's how them from the different objects goes some different functions which is not supposed to be culled from this object the and 2nd finger that's in the last
step OK the for example now we achieved full Canada rights real Qatar memory which regenerative writing the code table and the able to pass the that up to that memory mother files that will be down to the memory and for serving the allocates a piece of memory and using the table and the get Oracle there this function which you want the goal is not in the so CPB map
so the only somehow to jumping its and let the Fugees implanted our on but now we have so on the on the problem the then you that city if once the 1 take use mixed in this sticky thinks that the ants also makes the of our contraflow . us better policies and then you are able to I was defined as the edges and the change is that founders and then mean you over I think the 40th ocean I but no sense can and minerals the by the not normal that's easily upswing of tuned to the friends x on stick for that and optic forum on wonderful that means for example for contraflow you are it will talk later some subset of the inspections that means in the future human have can lead right you're not able to up other that can also think of the book and no control Forstic because the panic because for example to this controls that you can you can add value only only when you call something jump up or this 1 you you are not able to watch distinctly some moles or police action for example so it can solve the issue but for now it's you can view of makes this technique that the contraflow In information-centric understanding so for example it's 10 on revised and feel perceive you and being solidly down don't Pinochet's is the problem that you have fully rights and screaming at me now if also the how can I mentioned a canal so that the dual is basically call this right functions for cold this right beneath moon and and that until we just say rights that are recognized as the major will be greater it's after the start of the skull that means in the latent our quotes that means no additional checks performatives by functional to because you will that that mistake any time this then you can do it's and so in the end spend every system call angles those with scalar driver see the bolt on this something from from open driver because of the achieve that cannot right to be achieved on allocating there's a is a good a memory in being being loaded now that and the jump there and it's is over and what a
that's popping cult he I will then be doing it's not Mozart induced of operating systems in general because for them than those of the if some really good technique for for false and you can use it seemed denigrating the only thing that any component is some because ability elaborating and the technique can being fixed and small more
important most important thing is that is their own eyes on the beach the issue that you can't miss the out in the stands How of save candles you can mean at you the cannot for the occasion we just right 1 might be just or 0 to 1 and it's over but they have to be OK you have to control that the rights but you may just this 1 you can pull all the kennel because you can link don't get position Bayes address and you can use that they think of the the bitmap and you can use it so it's only in the singular said on the canal if and then you look at the
aftermath from that's for example now on this out of the box be a portable phone and now become presents all the cells become but fellow the back because it's not speaks it's saying before they say that it's a it's perfectly work and I understand that Ciliata fix that will never the same channel especially if the about DPFs but in general and speaker catalysts can be a long process but there will be many look get its in different scenario that for us in new its father abouts freaks around the 3 box if either so his father rules but it was a of and it's nuts and we do it for circuit differ from the employer birds fixing and it but the other guys are doing of much more essential you than us on the doing the disease it should be for us into it's probably wholesome now and is against units for was about at most defined in those blacks and now it's more than 3 months itself fixed so it's really a possible that all these guys have the back I don't know maybe 1 these but this on the box and I think the this kind of much of the Illini fixed this was possible and they said that exploiting this kind of box and at you you then can internal and why it's not lot because immigrants in currents were designed In the end up in court rental but if he sends an East the reactants he old say that are means of these and you have not too much care about the security staff and now it's by design some broken some you on some you introduce some indications and someone thinks it's amazing Brok's doesn't cooperates so I hope in the future it will be events maybe from scratch and not so much of it will be a sum majorities and systems and it's not the thing is that's not a good issues like reading some can I disease for an imposition pool is public and its public for 4 years and it's still you can use it and that's a big deal and so in in the
presentation i want to invite you for orients in it in the bride's is some even from the geeks you component smart devices it's the approach the rising baking he will be an 24 October and so it's all forms so when you want to win we present some research but but the both from the ice and just send out of them send us some summation and the if you think it's cool began going sites if you can pull on the smart device component cars might micro if smaller trees but if think he's school yeah really appreciate it and this will be on the trip the so this time for questions
and by hiring so you have any questions about these spent fission just off now later when the doctor OK thank them thank you and the fact the