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4 questions
1
vote
1
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Why always get the message "Illegal Instruction (core dumped)"?
I tried to exploiting buffer overflow. In the exploit code
I use the Aleph-One shellcode.
"\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\...
0
votes
1
answer
450
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My nopsled getting Segmentation fault (core dumped)
After overwrite the EIP register, I try breakpoint on the function strcpy() and then run the program after a breakpoint in the debugger.
Then I check the ESP register :
(gdb) i r esp
esp ...
3
votes
1
answer
855
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How should I approach a basic CTF exploitation challenge?
Complete newbie alert so apologies on what you're about to read.
I've an executable I'm working with to achieve buffer overflow on. This is for an old CTF that has been and gone but I chose it to ...
- 221
1
vote
2
answers
517
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Why can't I get the EIP to reflect my input
I am going through a tutorial which shows you how to exploit a stack based buffer overflow in a sample C program. The C code is:
#include <string.h>
void function(char *str) {
char buffer[...
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