forked from Storyyeller/Krakatau
/
disassemble.py
55 lines (43 loc) · 1.9 KB
/
disassemble.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
import os.path
import time, zipfile
import Krakatau
import Krakatau.binUnpacker
from Krakatau.classfile import ClassFile
import Krakatau.assembler.disassembler
from Krakatau import script_util
def readFile(filename):
with open(filename, 'rb') as f:
return f.read()
def disassembleClass(readTarget, targets=None, outpath=None):
if outpath is None:
outpath = os.getcwd()
# targets = targets[::-1]
start_time = time.time()
# random.shuffle(targets)
for i,target in enumerate(targets):
print 'processing target {}, {}/{} remaining'.format(target, len(targets)-i, len(targets))
data = readTarget(target)
stream = Krakatau.binUnpacker.binUnpacker(data=data)
class_ = ClassFile(stream)
source = Krakatau.assembler.disassembler.disassemble(class_)
filename = script_util.writeFile(outpath, class_.name, '.j', source)
print 'Class written to', filename
print time.time() - start_time, ' seconds elapsed'
if __name__== "__main__":
print 'Krakatau Copyright (C) 2012-13 Robert Grosse'
import argparse
parser = argparse.ArgumentParser(description='Krakatau decompiler and bytecode analysis tool')
parser.add_argument('-out',help='Path to generate files in')
parser.add_argument('-r', action='store_true', help="Process all files in the directory target and subdirectories")
parser.add_argument('target',help='Name of class or jar file to decompile')
args = parser.parse_args()
targets = script_util.findFiles(args.target, args.r, '.class')
#allow reading files from a jar if target is specified as a jar
if args.target.endswith('.jar'):
def readArchive(name):
with zipfile.ZipFile(args.target, 'r') as archive:
return archive.open(name).read()
readTarget = readArchive
else:
readTarget = readFile
disassembleClass(readTarget, targets, args.out)