In angr, how to Load and Analyze a binary file that only contain a function instructions

Question

I have some binary files, each of them contain instructions of a function, (may be a little more in the end). The begining of the file also is the start point of the function.

This files were extracted from a ELF file.The platform is arm64.

So, how to load and analyze this file using angr?
I upload a sample file here: xfrank.pythonanywhere.com/bin

---

The original target:

Every function has a "switch case statement", the target is to get all intergers of the case expression.

Example(C code):

void func1(int cmd){
    switch (cmd) {
    case 1:
        xxxx
        break;
    case 10:
        yyyy;
        break;
    }
}

Result: 1,10

Answer 1

Here are the steps I would normally do:

• Load the binary in angr.
• Build a CFG.
• For each function you care about, first, get a reference of the function (func = cfg.functions[addr] or func = cfg.functions.function(name=the_name)), and then traverse the graph (func.graph or func.transition_graph).