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3 questions
7votes
1answer
8kviews
Why does my x86 shellcode test program segfault?
I am trying to learn how to create shellcode, my goal is to call execve(). I wrote the code in assembly and it works perfectly, there are no null-bytes or absolute addressing methods. The code works ...
- 79
10votes
2answers
1kviews
Are memcpy() based race conditions exploitable for causing remote code execution?
Let’s say I have the following pseudocode in the trusted part of a sandbox which prevent untrusted code calling mprotect() and mmap() and ptrace() directly (mutext isn’t accessible from sandboxed ...
- 1,512
2votes
3answers
2kviews
How can I execute shell in this CTF exercise?
I am playing a CTF wargame and unfortunatley got stuck at this level, so I want to "crowdsource" it. No need for complete answer, but hints would be enough. How can I: Make strcmp to be 0 (evaluate ...
- 1,007
