306 lines
9.5 KiB
Python
306 lines
9.5 KiB
Python
import r2pipe
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import os
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import json
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from tqdm import tqdm
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from pprint import pprint
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import os
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import sys
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r2cmds = []
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scrap_exe = sys.argv[1]
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folder = os.path.abspath(os.path.dirname(scrap_exe))
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assert os.path.isfile(scrap_exe), "File not found!"
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r2 = r2pipe.open(scrap_exe)
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file_hashes = r2.cmdj("itj")
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target_hashes = {
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"sha1": "d2dde960e8eca69d60c2e39a439088b75f0c89fa",
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"md5": "a934c85dca5ab1c32f05c0977f62e186",
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}
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assert file_hashes == target_hashes, "Hash mismatch"
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def r2_cmd(cmd):
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global r2, r2cmds
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r2cmds.append(cmd)
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return r2.cmd(cmd)
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def r2_cmdj(cmd):
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global r2, r2cmds
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r2cmds.append(cmd)
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return r2.cmdj(cmd)
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def r2_cmdJ(cmd):
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global r2, r2cmds
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r2cmds.append(cmd)
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return r2.cmdJ(cmd)
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print("[*] Running 'aaaaa'")
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r2_cmd("aaaaa")
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#0x7fac20
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#0x7fac19
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#0x7faa4c
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#0x7fac1c # activate viewer
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#0x84d400
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#0x413ee0
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#0x7d2094 refcnt
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flags = {0x7FE944: ("P_World", 4), 0x79C698: ("Py_Mods", 4),0x852914: ("P_D3D8_Dev",4)}
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types = ["struct PyMethodDef {char *ml_name; void *ml_meth; int ml_flags; char *ml_doc;};"]
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func_sigs = {
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0x5a8390: "int py_exec(const char* script);",
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0x5bb9d0: "int PyArg_ParseTuple(void* PyObj, char* format, ...);",
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0x4134c0: "int write_log(unsigned int color, const char* msg);",
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0x47C1E0: "int ht_hash_ent_list(const char* str);",
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0x404BB0: "int ht_hash_ent(const char* str);",
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0x4016f0: "int reg_get_val(const char* value);",
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0x414280: "int prepare_html_log(const char* filename);",
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0x6b1c70: "bool strcmp(const char* s1,const char* s2);",
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0x5A8FB0: "void* Py_InitModule(const char* name,void* methods);",
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0x5E3800: "int fopen_1(const char* filename);",
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0x419950: "int fopen_2(const char* filename);",
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0x41AB50: "int open_pak(const char* filename, int unk_1,void* unk_ptr);",
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0x404460: "int register_c_callback(const char* name,void* func);"
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0x414070: "void throw_assertion_2(const char* check,const char* file, unsigned int line);"
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0x5FBC50: "void throw_assertion_1(const char* check,const char* file,const char* date, unsigned int line);",
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0x5bc140: "static char* convertsimple1(void *arg, char **p_format, void *p_va);"
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}
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functions = {
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0x6b1c70: "strcmp",
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0x5bb9d0: "PyArg_ParseTuple",
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0x5dd510: "init_engine_3d",
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0x401180: "create_window",
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0x401240: "create_main_window",
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0x4016f0: "reg_get_val",
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0x4134c0: "write_log",
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0x414280: "prepare_html_log",
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0x418220: "get_version_info",
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0x4137e0: "write_html_log",
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0x402190: "handle_console_input",
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0x5F9520: "handle_render_console_input",
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0x404A50: "find_entity",
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0x47C1E0: "ht_hash_ent_list",
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0x404BB0: "ht_hash_ent",
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0x404460: "register_c_callback",
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0x417470: "load_game",
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0x5E3800: "fopen_1",
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0x419950: "fopen_2",
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0x403370: "debug_init",
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0x401770: "init",
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0x4026D0: "init_py",
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0x405B40: "init_py_sub",
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0x5A8FB0: "Py_InitModule",
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0x41AB50: "open_pak",
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0x5A8390: "py_exec",
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0x414570: "setup_game_vars",
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0x5FBC50: "throw_assertion_1",
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0x414070: "throw_assertion_2",
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0x5F7000: "load_m3d_ini",
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0x650F80: "load_sm3",
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0x6665A0: "load_m3d_1",
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0x666900: "load_m3d_2",
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0x479B20: "world_constructor",
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0x479B40: "world_init",
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0x402510: "world_deinit",
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0x479870: "make_world",
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0x602a70: "render_frame"
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}
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for t in types:
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r2_cmd(f'"td {t}"')
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for addr, args in flags.items():
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name, size = args
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r2_cmd(f"f loc.{name} {size} {hex(addr)}")
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for addr, name in functions.items():
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r2_cmd(f"afr fcn.{name} {hex(addr)}")
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if addr in func_sigs:
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r2_cmd(f'"afs {func_sigs[addr]}" @{hex(addr)}')
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def vtables():
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ret = {}
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print("[*] Analyzing VTables")
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vtables = r2_cmdJ("avj")
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for c in tqdm(vtables, ascii=True):
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methods = []
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for m in tqdm(c.methods, ascii=True, leave=False):
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methods.append(hex(m.offset))
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r2.cmd(f"afr @{hex(m.offset)} 2>{os.devnull}")
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ret[hex(c.offset)] = methods
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return ret
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def c_callbacks():
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print("[*] Parsing C Callbacks")
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funcs = {}
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res = r2_cmd("/r fcn.register_c_callback ~CALL[1]").splitlines()
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for addr in tqdm(res, ascii=True):
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func, name = r2_cmdJ(f"s {addr};so -3;pdj 2")
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func = func.refs[0].addr
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name = r2_cmd(f"psz @{hex(name.refs[0].addr)}").strip()
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r2_cmd(f"afr fcn.CB_{name} {hex(func)} 2>NUL")
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funcs[name] = hex(func)
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return funcs
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def assertions():
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assertions = {}
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for (n_args,a_addr) in [(4,"fcn.throw_assertion_1"), (3,"fcn.throw_assertion_2")]:
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print(f"[*] Parsing C assertions for {a_addr}")
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res = r2_cmd(f"/r {a_addr} ~CALL[1]").splitlines()
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print()
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for line in tqdm(res, ascii=True):
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addr = line.strip()
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dis=r2_cmdJ(f"s {addr};so -{n_args};pij {n_args}") # seek and print disassembly
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if n_args==4:
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file, msg, date, line = dis
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elif n_args==3:
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date=None
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file, msg, line = dis
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try:
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file = r2_cmd(f"psz @{file.refs[0].addr}").strip()
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msg = r2_cmd(f"psz @{msg.refs[0].addr}").strip()
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if date:
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r2_cmd(f"psz @{date.refs[0].addr}").strip()
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line=line.val
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file=file.replace("\\\\", "\\")
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os.path.isabs(file):
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file = os.path.abspath(file)
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assertions.setdefault(path, [])
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assertions[path].append({'line':line,'date':date,'addr':addr,'msg': msg})
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except:
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pass
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for path in assertions:
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assertions[path].sort(key=lambda v:v['line'])
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return assertions
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def bb_refs(addr):
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ret={}
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res = r2_cmd(f"/r {addr} ~fcn[0,1]").splitlines()
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print()
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for ent in res:
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func,hit=ent.split()
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ret[hit]={'asm':[],'func':func}
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for ins in r2_cmdJ(f"pdbj @{hit}"):
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ret[hit]['asm'].append(ins.disasm)
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return ret
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def world():
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print("[*] Parsing World offsets")
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return bb_refs("loc.P_World")
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def render():
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print("[*] Parsing D3D_Device offsets")
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return bb_refs("loc.P_D3D8_Dev")
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def py_mods():
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print("[*] Parsing Python modules")
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res = r2_cmd("/r fcn.Py_InitModule ~CALL[1]").splitlines()
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print()
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py_mods = {}
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for call_loc in tqdm(res, ascii=True):
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args = r2_cmdJ(f"s {call_loc};so -3;pdj 3")
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refs = []
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if not all([arg.type == "push" for arg in args]):
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continue
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for arg in args:
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refs.append(hex(arg.val))
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doc, methods, name = refs
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doc = r2_cmd(f"psz @{doc}").strip()
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name = r2_cmd(f"psz @{name}").strip()
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r2_cmd(f"s {methods}")
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r2_cmd(f"f loc.py.MethodDef_{name} 4 {methods}")
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py_mods[name] = {"methods_addr": methods, "doc": doc, "methods": {}}
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while True:
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m_name, m_func, _, m_doc = [v.value for v in r2_cmdJ(f"pfj xxxx")]
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if m_name == 0:
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break
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m_name, m_func, m_doc = map(hex, (m_name, m_func, m_doc))
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m_name = r2_cmd(f"psz @{m_name}").strip()
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r2_cmd(f"f Py_{name}_{m_name}_doc 4 {m_doc}")
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m_doc = r2_cmd(f"psz @{m_doc}").strip()
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py_mods[name]["methods"][m_name] = {"addr": m_func, "doc": m_doc}
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r2_cmd(f"afr fcn.py.{name}.{m_name} {m_func} 2>NUL")
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r2_cmd("s +16")
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return py_mods
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def game_vars():
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ret={}
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print("[*] Parsing Game variables")
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res = r2_cmd("/r fcn.setup_game_vars ~CALL[1]").splitlines()
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print()
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for line in tqdm(res, ascii=True):
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addr = line.strip()
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r2_cmd(f"s {addr}")
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args = r2_cmd("pdj -5") # seek and print disassembly
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if not args:
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continue
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args=json.loads(args)
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args_a = []
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push_cnt=0
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for arg in args[::-1]:
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if arg['type'] not in ["push","mov"]:
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continue
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if arg['type']=="push":
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push_cnt+=1
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args_a.append(arg)
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if push_cnt==3:
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break
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if len(args_a)!=4:
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continue
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if not all(['val' in v for v in args_a]):
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continue
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addr,name,_,desc=[v['val'] for v in args_a]
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name=r2_cmd(f"psz @{hex(name)}").strip()
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desc=r2_cmd(f"psz @{hex(desc)}").strip()
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addr=hex(addr)
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r2_cmd(f"f var_{name} 4 {addr}")
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ret[addr]={'name':name,'desc':desc}
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return ret
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ret = dict(
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game_vars=game_vars(),
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c_callbacks=c_callbacks(),
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py_mods=py_mods(),
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assertions=assertions(),
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vtables=vtables(),
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world=world(),
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render=render(),
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)
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r2_cmd("aaaaa") # Propagate type infos
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with open(os.path.join(folder, "Scrap_dissect.json"), "w") as of:
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json.dump(ret, of, indent=4)
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print("[+] Wrote Scrap_dissect.json")
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with open(os.path.join(folder, "Scrap_dissect.r2"), "w") as of:
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wcmds = []
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for cmd in r2cmds:
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for start in ["f ", "afr ", "aaaaa","afs"]:
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if cmd.strip('"').startswith(start):
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wcmds.append(cmd)
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break
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of.write("\n".join(wcmds))
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print("[+] Wrote Scrap_dissect.r2")
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print(f"[*] Done, now cd to '{folder}'...")
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print(
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"[*] ...and run 'r2 -i Scrap_dissect.r2 Scrap.exe' to load the parsed infos into radare2"
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)
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