package radare2

OCaml interface to radare2

This is an OCaml interface to radare2, the reverse engineer's dream tool.

Installation

You can install it using opam the OCaml package manager, see here for a quick introduction to the OCaml ecosystem and how to get opam.

If not on opam or wanting to use the latest and greatest then do:

$ opam pin add radare2 git@github.com:fxfactorial/ocaml-radare2.git -y

Otherwise use the one on opam

$ opam install radare2 -y

Example usage:

Here's a utop session, (opam install utop)

#require "radare2";;
let result = R2.with_command_j ~cmd:"/j chown" "/bin/ls";;
val result : Yojson.t =
`List
  [`Assoc
    [("offset", `Int 4294987375); ("id:", `Int 0);
     ("data", `String "ywritesecuritychownfile_inheritdi")]]"

R2.with_command ~cmd:"S=" "/bin/ls" |> print_endline;;
00* 0x100000e94 |###############-----| 0x10000442d mr-x 0.__text 13.4K
01  0x10000442e |--------------##----| 0x1000045f6 mr-x 1.__stubs 0456
02  0x1000045f8 |---------------##---| 0x100004900 mr-x 2.__stub_helper  0776
03  0x100004900 |----------------#---| 0x100004af0 mr-x 3.__const  0496
04  0x100004af0 |----------------###-| 0x100004f69 mr-x 4.__cstring  1.1K
05  0x100004f6c |------------------#-| 0x100005000 mr-x 5.__unwind_info  0148
06  0x100005000 |------------------#-| 0x100005028 mrw- 6.__got  0040
07  0x100005028 |------------------#-| 0x100005038 mrw- 7.__nl_symbol_ptr  0016
08  0x100005038 |------------------#-| 0x100005298 mrw- 8.__la_symbol_ptr  0608
09  0x1000052a0 |------------------##| 0x1000054c8 mrw- 9.__const  0552
10  0x1000054d0 |-------------------#| 0x1000054f8 mrw- 10.__data  0040
11  0x100005500 |-------------------#| 0x1000055c0 mrw- 11.__bss  0192
12  0x1000055c0 |-------------------#| 0x10000564c mrw- 12.__common  0140
=>  0x100001174 |-^------------------| 0x100001274

Documentation

Here is the mli with comments, fairly simple and high level.

(** A running instance of r2 *)
type r2

(** Send a command to r2, get back plain string output *)
val command : r2:r2 -> string -> string

(** Send a command to r2, get back Yojson. If output isn't JSON
    parsable then raises {Invalid_argument} so make sure command ends
    with 'j' *)
val command_json : r2:r2 -> string -> Yojson.t

(** Create a r2 instance with a given file, raises {Invalid_argument}
    if file doesn't exists *)
val open_file : string -> r2

(** close a r2 instance *)
val close : r2 -> unit

(** Convenience function for opening a r2 instance, sending a command,
    getting the result as plain string and closing the r2 instance *)
val with_command : cmd:string -> string -> string

(** Convenience function for opening a r2 instance, sending a command,
    getting the result as Yojson and closing the r2 instance *)
val with_command_j : cmd:string -> string -> Yojson.t