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Remote Gdb Cannot Find Bounds Of Current Function

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up vote 3 down vote favorite 2 I want to exploit a stack based buffer overflow for education purposes. You signed in with another tab or window. What crime would be illegal to uncover in medieval Europe? 301RedirectModule isn't working for URL with dot file name more hot questions question feed lang-c about us tour help blog chat The result is that the code "returns" to some unpredictable location and can't figure out where it is it returned to. http://stevemattley.com/cannot-find/saxon-cannot-find-a-matching-1-argument-function.html

I am missing sth else –curious Jan 5 '12 at 12:32 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote The debugger has knowledge about where When debugged locally it does break of course. Additional details: The machine code was generated by gcc asm statements and I copied it to the kernel memory location where it's executing, from the output of objdump -d. It a simple stack based buffer overflow exploit. http://stackoverflow.com/questions/8741493/why-i-do-get-cannot-find-bound-of-current-function-when-i-overwrite-the-ret-ad

Cannot Find Bounds Of Current Function In Gdb

I attach the source code.the caller is int main(){ char FileName[1024]; SomeFunction("Hello"); // cb can step into this function in dll GetFileName(NULL , FileName , "title"); //when this Spritetm commented Nov 30, 2015 Okay, please check out commit 4c9d2f0 and see if you can reproduce the problem? For details and our forum data attribution, retention and privacy policy, see here Skip to content Ignore Learn more Please note that GitHub no longer supports old versions of Firefox.

When does TNG take place in relation to DS9? Could do j = i; while( j-- > 0 && inser[i] < inser[j] ) { ... } and use size_t for i,j, which makes more sense for as they are array Adv Reply April 27th, 2011 #4 dwhitney67 View Profile View Forum Posts Private Message Tolerant of Ubuntu Join Date Jun 2007 Location Maryland, US Beans 6,272 DistroKubuntu Re: Help with Gdb Disassemble The sorting algorithm is functioning properly but when the free(inser) command is encountered, the debugger is outputting the Cannot find bounds of current function error.

b.g. -- Bill Gatliff Affordable GNU and Linux training and consulting services. Cannot Find Bounds Of Current Function Code Blocks Index Nav: [DateIndex] [SubjectIndex] [AuthorIndex] [ThreadIndex] Message Nav: [DatePrev][DateNext] [ThreadPrev][ThreadNext] Other format: [Raw text] Re: arm-elf-gdb "Cannot find bounds of current function" From: Bill Gatliff To: Where can I read CS papers? http://stackoverflow.com/questions/22838955/cannot-find-bounds-of-current-function What is the point of update independent rendering in a game loop?

Your "shell code", when in RAM (in the stack), is not in a part which is mapped from the executable file (it is in the stack, instead) and, anyway, was not Gdb Print Stack The code above is an example of a simple test case. On the first execution of "next" I get back some result but all following next commands give me errors Cannot find bounds of current function. You could exchange the operands to && to avoid this problem, getting this: while( j>=0 && inser[i] < inser[j] ) { ... } Other than that, I can't say if your

Cannot Find Bounds Of Current Function Code Blocks

I have a program I want to run in a Ubuntu VBox guest and I want to debug it from the host. Results 1 to 7 of 7 Thread: Help with remote debugging gdb/ddd Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Cannot Find Bounds Of Current Function In Gdb Posts: 7071 Re: Cannot find bounds of current function? « Reply #8 on: March 25, 2013, 11:15:38 am » Also tested on Win7 Pro all updates with C::B 12.11.No such issue.I Gdb Step Cannot Find Bounds Of Current Function As stated it will break fine when debugging on the local system - on either local system, but not when using "target remote" mode.

You can vary the location of the shellcode - the stack, the heap, or even use existing libc code ("jump to libc"). navigate here for (i = 0; i < ASIZE; i++) { See @Emmet answer for indexing of -1 concern. share|improve this answer answered Jan 5 '12 at 15:19 gnometorule 1,51711227 This could explain why attempting to execute improper code could get an access violation. I'm using one of my own gdb stubs to debug on an arm-elf target. Gdb Single Step Assembly

Also, are you sure you have the softdevice on the chip? The PC received from the target, however, is 0x30821820, which is 0x20188230 reversed. PC: 0x402670 (gdb) file /opt/j64-602/bin/jconsole Reading symbols from /opt/j64-602/bin/jconsole...done. (no debugging symbols found)...done. (gdb) layout asm (gdb) start (gdb) share|improve this answer edited Mar 11 '10 at 2:12 answered Mar 11 Check This Out No copy anymore.

How do I avoid referring to all state variables when updating only a few? Gdb Set Breakpoint Buggy 'T' implementation, apparently. Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc.

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Possible XML handles in Magento 2? But when I switch to the guest and enter a char it works as usual and never breaks. Do the Leaves of Lórien brooches have any special significance or attributes? Gdb Cheat Sheet Ballpark salary equivalent today of "healthcare benefits" in the US?

There are several protection mechanisms related to buffer overflows in a Linux system (I assume you are using Linux): The stack can be marked as "non executable". Use the "file" command. I suspect it's shared libraries not matching but I'm unsure about that and was hoping maybe someone had seen this before. this contact form This stub is made to work with the open-source xtensa-lx106-elf-gdb as built by e.g.

P.S: If I remove the breakpoint and run continue then the LED starts to blink and I can see the usual output: (gdb) delete 1 (gdb) continue Continuing. (trace) xtensa_alloc_frame_cache () Posts: 7071 Re: Cannot find bounds of current function? « Reply #1 on: March 25, 2013, 06:13:53 am » And where is the relation to C::B ?It looks either like a more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed By looking at the EIP at the time of the crash and the data on the stack you can see if it made the jmp to your nop sled or not,

int main(void) { int i,t,j; int *inser = malloc(sizeof(int)*16384); int *shell = malloc(sizeof(int)*16384); srand(time(NULL)); for(i=0;i<=16384;i++){ *(inser+i) = rand()% 17000;; *(shell+i) = *(inser+i); } for(i=1;i<=16384;i++){ j = i-1; while((*(inser+i)<*(inser+j)) && (j >=0)){ SMF 2.0.12 | SMF © 2016, Simple Machines XHTML RSS WAP2 Questions Blogs Tutorials Resources Tour About GitHub/Nordic nordicsemi.com First time here? Can I substitute decaf coffee for espresso Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Possible repercussions from assault between coworkers outside the office As a monk, can I use Deflect Missiles to intentionally catch a projectile?

Posts: 7071 Re: Cannot find bounds of current function? « Reply #3 on: March 25, 2013, 08:47:15 am » Quote from: huzhongshan on March 25, 2013, 08:16:22 amQuote from: jens on Breakpoint 1, init () at app/application.cpp:22 22 { I can also see information about variables (gdb) print state $1 = true But then I am not able to debug the application When this failure occurs, the debugger prints the error message you see. Adv Reply April 27th, 2011 #5 BkkBonanza View Profile View Forum Posts Private Message Staff Emeritus Join Date Apr 2008 Location Far, far away Beans 2,148 DistroUbuntu 11.04 Natty Narwhal

Adv Reply Quick Navigation Programming Talk Top Site Areas Settings Private Messages Subscriptions Who's Online Search Forums Forums Home Forums The Ubuntu Forum Community Ubuntu Official Flavours Support New to Join them; it only takes a minute: Sign up Why I do get “Cannot find bound of current function” when I overwrite the ret address of a vulnerable program? share|improve this answer answered Apr 3 '14 at 15:48 Austin 1011 add a comment| up vote 0 down vote Change the 3 for() loop terminations. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the

Up to here everything seems to be work as expected.