int a(char *string){
---define some string here
val= strcmp (validString, string) == 0;
return val? 1 : 0;
}
int b(int a) {
do some stuff here
}
void main(int argc, char **argv){
int c = 3434;
char in[9];
scanf("%s", n);
if (a(in)){
b(c);
}
}
I was wondering if it was possible to overflow the variable "in" and jump to b with the arguments intact?
I know how to overflow and jump to an address in the program. But i don't know how I could call b with the argument(c).
If i try jumping to b(c); GDB tells me "Cannot access memory at address 0x3638785c"
Any hints or ideas I could use?
*Also note ASLR is disabled and so is stack protection
aand executebevery time, regardless of the string comparison result? – yano Dec 7 at 0:31inwith the value ofcin the appropriate place? Or is the hard part here assuming you don't know the value ofc? I'm not quite sure how all this would line up in memory without looking, this may be a dumb comment – yano Dec 7 at 0:52