jeffli678 / binflow Goto Github PK

binflow v0.0.1

This software is a re-design of ftrace (https://github.com/elfmaster/ftrace)
which was somewhat popular but has some naive implementation qualities that
make it slow, and not suitable for some applications. 

binflow is much faster, and has better argument resolution and will be able
to handle multi-threaded applications/processes. Currently it is only 30%
complete and does not yet handle return values.

Stay tuned. Here is an example of binflow tracing a binary that was compiled
from the following source code:

int f(int a, int b, int c)
{
	printf("%d, %d, %d\n", a, b, c);
}

int main(void)
{
	int j = 0;
	int i;
	char *ptr = strdup("Hello");
	char buf[255];
	strncpy(buf, "hello", 8);
	printf("%s\n", buf);
	printf("%s\n", ptr);
	f(3, 2, 1);
	for (i = 0; i < 3; i++)
		f(1 + i, 2, 3 + i);
}

$ ./binflow -s -b ./test
PLT_call@0x4005b4: __libc_start_main()
LOCAL_call@0x4007ae: _init()
LOCAL_call@0x4006d3: strdup("Hello")
PLT_call@0x4006f3: strncpy((stack_t *)7fffef7a1c90, "hello", 0x8)
PLT_call@0x400702: puts("hello")
hello
PLT_call@0x400711: puts("Hello")
Hello
LOCAL_call@0x400725: f(0x3, 0x2, 0x1)
PLT_call@0x4006a3: printf("%d, %d, %d\n", 0x3, 0x2, 0x2)
3, 2, 1
LOCAL_call@0x40074f: f(0x1, 0x2, 0x3)
PLT_call@0x4006a3: printf("%d, %d, %d\n", 0x1, 0x2, 0x2)
1, 2, 3
LOCAL_call@0x40074f: f(0x2, 0x2, 0x4)
PLT_call@0x4006a3: printf("%d, %d, %d\n", 0x2, 0x2, 0x2)
2, 2, 4
LOCAL_call@0x40074f: f(0x3, 0x2, 0x5)
PLT_call@0x4006a3: printf("%d, %d, %d\n", 0x3, 0x2, 0x2)
3, 2, 5
$