('binary' encoding is not supported, stored as-is)
hello, my name is michael, im from austria - so my english is very bad.
A few days ago i begin to experiment with bufferoverflows in linux.
i wrote a little c++ programm like this:
#include <string.h>
void main()
{
char buffer[10];
char COPY[]="AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...";
strcpy((char *)buffer,(char *)COPY);
}
k, this works very well, i got a core dump and have startet gdb. but in the output from "info all" was eip not overwritten
so i put a few lines in the program to output addresses from functions and variables.
addresses from functions where over 0 (eg (dec)500000) and addresses from vars under 0 (eg -5000000)
i think this is maybe the problem - but why?
output from gdb:
eax 0x0 0
ecx 0x41414141 1094795585
edx 0x1d7 471
ebx 0xb7e27ff4 -1209892876
esp 0x4141413d 0x4141413d
ebp 0x41414141 0x41414141
esi 0xb7f77ce0 -1208517408
edi 0x0 0
eip 0x80484ad 0x80484ad
eflags 0x210286 [ PF SF IF RF ID ]
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51
hope anybody can help me understand/learn.
greets from austria, michael
Received on Oct 31 2007
Intro
