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Tagged with shellcode buffer-overflow
55 questions
5
votes
1
answer
3k
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NX bit causes segfault on NOP slide?
doing an assignment for university.
We have to exec a shell on a remote server. We're told the NX bit is not set, however, when we redirect to our injected code, the server has a segmentation fault. ...
- 385
8
votes
1
answer
4k
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SafeSEH and x64
I read here that
/SAFESEH is only valid when linking for x86 targets. /SAFESEH is not
supported for platforms that already have the exception handlers
noted. For example, on x64 and Itanium, ...
- 509
6
votes
2
answers
3k
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Stack canaries protection and ROP
As far as I know stack canaries are values written on the stack that, if overwritten by a buffer overflow, force the application to close at return.
My question is: if I overwrite both EIP and stack ...
- 509
7
votes
2
answers
5k
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Do I always have to overwrite EIP to get to write on the stack in a buffer overflow?
Do I always have to overwrite EIP to get to write on the stack in a buffer overflow? How's the memory organized? I can't find a proper graph with google
- 509
3
votes
1
answer
4k
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Stack smashing keep getting segmentation fault
I have a homework assignment to do stack smashing,
The exploit code creates a badfile in which the vulnerable file reads and buffer over flow occurs.
I have already did the 2 commands below to ...
- 131