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tommmmmm
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 Posted: Fri Sep 04, 2009 1:32 pm Post subject: |
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I wish I were paying more attention on the ASM class last year....
Making new string or dumping the esp value to a file (writting to file I had during the course so I presume I still have some usable code somewhere) requeries some data to define - which can be done in data structure section. I read first 200-300 lines of that exe file... there is no data section part.....
The real deal programms still surprise me....
I bet that within 12 hours of intensive googling I can find out answer of this. But laziness is a big sin I know...
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Slugsnack
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| Posted: Fri Sep 04, 2009 1:35 pm Post subject: |
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you don't need 12 hours of intensive googling you just need to follow the instructions i gave
there is no need to dump esp value to a file. making new string can be done with a simple hex editor or within hex dump of ollydbg
lmao what the hell were you doing during your asm class..
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tommmmmm
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| Posted: Fri Sep 04, 2009 3:12 pm Post subject: |
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I've been thinking about Java and wondering why such low lvl language as c++ still exists...
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Slugsnack
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| Posted: Fri Sep 04, 2009 3:17 pm Post subject: |
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once it exists it's not gonna randomly pop out of existence is it ?
also c++ will be faster if you're coding native code because of the lack of the VM. of course that also means it lacks portability when compared to java but a similarly coded program would be faster in c++
http://en.wikipedia.org/wiki/Comparison_of_Java_and_C%2B%2B
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&Vage
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| Posted: Fri Sep 04, 2009 6:06 pm Post subject: |
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| C/C++ is usable on any other OS, assuming that you aren't using any WINAPI's.
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Slugsnack
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| Posted: Fri Sep 04, 2009 6:19 pm Post subject: |
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| void:] wrote: | | C/C++ is usable on any other OS, assuming that you aren't using any WINAPI's. |
in terms of portability C++ is no match for Java. java code can be compiled on various systems as long as it is supported with no change in code. in most cases c++ code will require fiddling and small changes
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Bswap
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| Posted: Sat Sep 05, 2009 2:21 am Post subject: |
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| Quote: | tommmmmm
Expert Cheater
Post: 146 |
Expert cheater who can't do basic code injection. Someone really has to consider revising his title.
So, you are unable to locate where the string is referenced in the deadlisting, it's no biggie... there are always backdoors.
Cheat solution. Code up a loader (CreateProcess) and wait for it to fully initialize (WaitForInputIdle)... then programmatically obtani a handle (FindWindow) and change window caption (SetWindowText). Terminate Loader (ExitProcess).
E.g.
| Code: | .DATA
szNotepad db "c:\windows\notepad.exe", 0
szOldCaption db "Notepad", 0
szNewCaption db "rainbows and lollipops...", 0
_SI STARTUPINFO <>
_PI PROCESS_INFORMATION <>
.CODE
START:
invoke CreateProcess, addr szNotepad, 0, 0, 0, 0, 0, 0, 0, ADDR _SI, ADDR _PI
invoke WaitForInputIdle, _PI.hProcess, INFINITE
invoke FindWindow, addr szOldCaption, 0
invoke SetWindowText, eax, addr szNewCaption
invoke ExitProcess, 0
END START |
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hcavolsdsadgadsg
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| Posted: Sat Sep 05, 2009 3:33 am Post subject: |
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| Slugsnack wrote: | | void:] wrote: | | C/C++ is usable on any other OS, assuming that you aren't using any WINAPI's. |
in terms of portability C++ is no match for Java. java code can be compiled on various systems as long as it is supported with no change in code. in most cases c++ code will require fiddling and small changes |
you'd probably shit yourself if you saw mozillas portability standards.
the mozilla framework is designed to be run close to anywhere, including places that don't have access to MSVC or GCC.
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tommmmmm
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| Posted: Sat Sep 05, 2009 4:29 am Post subject: |
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| Bswap wrote: | | Quote: | tommmmmm
Expert Cheater
Post: 146 |
Expert cheater who can't do basic code injection. Someone really has to consider revising his title. |
:/
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My old signature contained a link to UCE for 822 GG MapleStory. So yeah, I decided to edit the signature.... |
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Flyte
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| Posted: Sat Sep 05, 2009 9:24 pm Post subject: |
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| Bswap wrote: | | Quote: | tommmmmm
Expert Cheater
Post: 146 |
Expert cheater who can't do basic code injection. Someone really has to consider revising his title. |
You'll quickly learn that the forum titles are not a good measure of relative intelligence, but rather the amount of free time they have on their hands. 
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Noz3001
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| Posted: Sun Sep 06, 2009 7:07 am Post subject: |
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| Slugsnack wrote: | | void:] wrote: | | C/C++ is usable on any other OS, assuming that you aren't using any WINAPI's. |
in terms of portability C++ is no match for Java. java code can be compiled on various systems as long as it is supported with no change in code. in most cases c++ code will require fiddling and small changes |
Maybe it is easier to get java to run on a toaster but you have to install the VM first and it's pretty damn big! Compare this to an 8KB C program :\. If there's an arch, there's probably a C compiler for it.
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Slugsnack
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| Posted: Sun Sep 06, 2009 7:18 am Post subject: |
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| Noz3001 wrote: | | Slugsnack wrote: | | void:] wrote: | | C/C++ is usable on any other OS, assuming that you aren't using any WINAPI's. |
in terms of portability C++ is no match for Java. java code can be compiled on various systems as long as it is supported with no change in code. in most cases c++ code will require fiddling and small changes |
Maybe it is easier to get java to run on a toaster but you have to install the VM first and it's pretty damn big! Compare this to an 8KB C program :\. If there's an arch, there's probably a C compiler for it. |
a few decades ago the main focus of a program was its speed, size and memory usage. this was because clock cycles, HDD size and memory size were very limited commodities. the focus has since shifted very much since getting a large amount of the above has become inexpensive and common. this is the main reason why 'virtual' languages are becoming so important. the industry is inundated with .net/c#/java programmers. speed is critical in very few areas now
there is simply no need to gain the extra clock cycles these days. you can see the way the industry has headed by the demand for types of programmers. an assembly programmer is out of a job pretty fast, at least the demand for them is very low. whereas a computer science graduate with knowledge of java can get a job pretty easy
at uni, we constantly have presenters coming in from large investment banks, major computing firms, etc. and if you listen carefully you can see that extra little speed is really not what they are looking for. virtualisation, virtual languages.. everything is turning virtual now : |
good algorithm design is 'good enough' as opposed to a few decades back when people would code very carefully to make sure they avoided a particular register stall or something. actually i saw something incredible the other day when debugging a very old program the other day.. there was a conditional jump to something that was like 2 bytes ahead which appeared to be to half an instruction. i was like pfsh that gonna crash. what had happened was that it just happened that the 'half instruction' was actually the bytes for another instruction.. so it was like one instruction encoded inside another and the programmer has recognised that and taken the time to make the conditional jump there. WOW. you would never see something like that in this age
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Noz3001
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| Posted: Sun Sep 06, 2009 2:06 pm Post subject: |
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Yeah, I was talking about having to download the JRE before you can run any Java program. It's massive.
C doesn't have this problem.
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Slugsnack
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| Posted: Sun Sep 06, 2009 4:07 pm Post subject: |
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| if you're talking about on an embedded system like a toaster then the manufacturers would be the ones loading the runtime environment onto the firmware, not quite sure what point you're trying to make. from an end user POV there would be no difference whereas from a developer POV java would probably be easier, at least if there were some code you wanted to use from another project you could do so directly with no changes
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Noz3001
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| Posted: Sun Sep 06, 2009 7:24 pm Post subject: |
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| Slugsnack wrote: | | if you're talking about on an embedded system like a toaster then the manufacturers would be the ones loading the runtime environment onto the firmware, not quite sure what point you're trying to make. from an end user POV there would be no difference whereas from a developer POV java would probably be easier, at least if there were some code you wanted to use from another project you could do so directly with no changes |
Lol, what im saying is that for java you need the jre which is pretty big where c executables are as little as 3KB. This is another advantage c has.
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