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#include <stdio.h>
// gcc -shared -o libdemo.so demo-so.c -w
int target_func(char *buf, int size) {
printf("buffer:%p, size:%p\n", buf, size);
switch (buf[0]) {
case 1:
puts("222");
if (buf[1] == '\x44') {
puts("null ptr deference");
*(char *)(0) = 1;
}
break;
case 0xff:
if (buf[2] == '\xff') {
if (buf[1] == '\x44') {
puts("crash....");
*(char *)(0xdeadbeef) = 1;
}
}
break;
default:
puts("default action");
break;
}
return 1;
}
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