{"id":164,"date":"2026-02-07T21:06:13","date_gmt":"2026-02-07T13:06:13","guid":{"rendered":"http:\/\/120.27.213.206\/?p=164"},"modified":"2026-02-10T20:12:40","modified_gmt":"2026-02-10T12:12:40","slug":"hkcert-2025-easydriver","status":"publish","type":"post","link":"http:\/\/120.27.213.206\/index.php\/2026\/02\/07\/hkcert-2025-easydriver\/","title":{"rendered":"HKCERT-2025-easydriver"},"content":{"rendered":"\n

Author\uff1ashare<\/p>\n\n\n\n

\u6700\u8fd1\u4e5f\u662f\u5f00\u59cb\u5b66\u4e60\u5185\u6838\u9a71\u52a8\u4e86,\u6765\u590d\u73b0\u4e00\u9053\u9a71\u52a8\u9898\u76ee,\u672c\u6765\u4ee5\u4e3a\u662f\u4e00\u9053\u7b80\u5355\u9898,\u7ed3\u679c\u53d1\u73b0\u662f\u8ddfNepCTF2025\u76840\u89e3\u9898XSafe\u957f\u7684\u4e0d\u80fd\u8bf4\u4e00\u6a21\u4e00\u6837\u5427,\u53ea\u80fd\u8bf4\u662f\u5b8c\u5168\u4e00\u6837,\u53ea\u6539\u4e86\u5bc6\u6587\u548c\u8f6e\u6570\u5176\u4ed6\u57fa\u672c\u5168\u90e8\u7167\u642c.<\/p>\n\n\n\n

\u5148\u6765\u770br3\u5c42\u7528\u6237\u6001\u7684\u7a0b\u5e8f\u903b\u8f91\u5f88\u7b80\u5355,\u5c31\u662f\u8f93\u5165,\u7136\u540e\u6253\u5f00\u8fdb\u7a0b,\u5728\u5199\u5165\u540e\u8f93\u51fa,\u672c\u6765\u770b\u4e0d\u51fa\u6765\u6709\u4ec0\u4e48,\u4f46\u662f\u770b\u4e86\u5176\u4ed6\u5e08\u5085\u7684\u535a\u5ba2\u53d1\u73b0,\u9a71\u52a8\u53ef\u80fd\u8bbf\u95ee\u4e86\u8be5\u8fdb\u7a0b,\u53d6\u51fa\u8f93\u5165\u503c\u8fdb\u884c\u6821\u9a8c<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5728\u6765\u770br0\u5c42\u7684\u9a71\u52a8\u7a0b\u5e8f\u4e3b\u8981\u7684\u7a0b\u5e8f\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2dsub_140010ADE<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8ddf\u8fdb\u8fd9\u4e2a\u51fd\u6570\u53d1\u73b0\u8fd9\u4e2a\u51fd\u6570\u88ab\u6df7\u6dc6\u7684\u7279\u522b\u5389\u5bb3,\u5230\u8fd9\u91cc\u6ca1\u6709\u601d\u8def\u53ea\u80fd\u52a8\u8c03\u770b\u4e00\u4e0b<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8fd0\u884c\u52a0\u8f7d\u8fd9\u4e2a\u9a71\u52a8\u53d1\u73b0\u84dd\u5c4f\u4e86,\u9519\u8bef\u7801\u662f0xdeadbeef,\u91cc\u9762\u5e94\u8be5\u6709\u53cd\u8c03\u8bd5<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u67e5\u770b\u5d29\u6e83\u524d\u7684\u6808\u5e27\u8c03\u7528,\u8fd9\u91cc\u53d1\u73b0\u4e86\u662f\u4f7f\u7528\u4e86KeBugCheckEx\u8fd9\u4e2a\u51fd\u6570\u6765\u8fdb\u884c\u53cd\u8c03\u8bd5\u7684<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5728ida\u4e2d\u67e5\u770b\u8fd9\u4e2a\u4f4d\u7f6e,\u53d1\u73b0\u91cc\u8c03\u7528\u4e86\u4e00\u4e2a\u51fd\u6570<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u4f46\u662f\u53ea\u6709\u4e00\u4e2a\u8df3\u8f6c,\u770b\u4e86\u5176\u4ed6\u5e08\u5085\u7684wp\u8bf4\u8fd9\u91cc\u662f\u4e00\u4e2a\u6839\u636eapi\u8c03\u7528\u51fd\u6570\u7684\u4f4d\u7f6e,\u90a3\u4e48\u53cd\u8c03\u8bd5\u51fd\u6570\u5e94\u8be5\u4e5f\u662f\u901a\u8fc7\u8fd9\u4e2a\u6765\u8fdb\u884c\u8c03\u7528\u7684,\u4e0b\u4e00\u6b65\u76f4\u63a5\u5b9a\u4f4d\u5230\u8fd9\u91cc\u8fdb\u884c\u52a8\u8c03<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u6839\u636e\u5730\u5740\u7b80\u5355\u7684\u8ba1\u7b97\u4e00\u4e0b\u8fd9\u4e2a\u51fd\u6570\u5728\u5185\u5b58\u4e2d\u7684\u4f4d\u7f6e,\u7136\u540e\u4e0b\u65ad\u70b9,\u8fdb\u884c\u52a8\u8c03<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8ddf\u8fc7\u6765\u4fe9\u6b21\u53d1\u73b0\u4e86\u8fd9\u4e2a\u51fd\u6570\u662f\u6211\u4eec\u8981\u627e\u7684\u53cd\u8c03\u8bd5\u51fd\u6570,\u73b0\u5728\u53ef\u4ee5\u5728ida\u76f4\u63a5nop\u6389\u8c03\u7528\u7684\u51fd\u6570,\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528r rip=ret<\u5730\u5740>\u7684\u65b9\u5f0f\u76f4\u63a5\u7ed5\u8fc7\u53cd\u8c03\u8bd5,\u8fd9\u91cc\u7ed5\u8fc7\u4e4b\u540e\u540e\u9762\u8fd8\u4e00\u4e2a\u53cd\u8c03\u8bd5\u548c\u5c06\u8c03\u8bd5\u5668\u5265\u79bb\u7684\u51fd\u6570\u90fd\u7528\u76f8\u540c\u7684\u65b9\u5f0f\u7ed5\u8fc7\u5373\u53ef<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5728\u6211\u4eec\u8f93\u5165\u5b57\u7b26\u4e32\u540e,\u8c03\u7528\u7684\u4e00\u4e2a\u51fd\u6570PsGetProcessSectionBaseAddress\u662f\u7528\u6765\u67e5\u627e\u76ee\u6807\u8fdb\u7a0b\u7684,\u8fd9\u91cc\u7684\u8fdb\u7a0b\u5c31\u662f\u6211\u4eec\u7684r3\u7a0b\u5e8f<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u4e0b\u4e00\u4e2a\u51fd\u6570\u662f\u7528\u6765\u590d\u5236\u81ea\u5df1\u8f93\u5165\u7684\u5b57\u7b26\u4e32,\u5728\u8fd9\u91cc\u5bf9\u590d\u5236\u597d\u7684\u4f4d\u7f6e\u4e0b\u4e00\u4e2a\u786c\u4ef6\u65ad\u70b9,\u8ddf\u8e2a\u4e00\u4e0b\u6267\u884c\u6d41\u548c\u5bf9\u6211\u4eec\u8f93\u5165\u505a\u4e86\u4ec0\u4e48<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8ddf\u8e2a\u8fc7\u6765\u53d1\u73b0\u4ed6\u8c03\u7528\u4e86\u4e00\u4e2astrlen\u6765\u7edf\u8ba1\u6211\u4eec\u7684\u957f\u5ea6,\u76f4\u63a5\u8fd0\u884c\u53d1\u73b0\u76f4\u63a5\u5c31\u8df3\u51fa\u53bb\u4e86,\u5e94\u8be5\u662f\u6709\u4e00\u4e2a\u957f\u5ea6\u7684\u5224\u65ad<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u52a8\u8c03\u5230\u8fd9\u91cc\u53d1\u73b0\u6211\u4eec\u7684\u957f\u5ea6rax\u88abr8\u8986\u76d6\u4e86,\u5e76\u4e14\u4f20\u7ed9\u4e86rdi,<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5230\u6700\u540e\u53d1\u73b0\u662f xor rax,rdi,\u5728cmp rax,22222222,\u5728\u8ba1\u7b97\u4e00\u4e0b\u53d1\u73b0\u6211\u4eec\u7684\u957f\u5ea6\u5e94\u8be5\u662f48\u4f4d<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u540e\u9762\u5c31\u5230\u4e86\u6f2b\u957f\u7684\u52a8\u8c03,\u89c2\u5bdf\u5bc4\u5b58\u5668\u7684\u73af\u8282,\u52a8\u8c03\u51fa\u6765\u7684\u903b\u8f91<\/p>\n\n\n\n

key 3c4ed885 12af3e87 d6e1b31f 25c10aa0
mov r10d, 11111111h
xor r10d, dword ptr [0FFFFF800235C9018h]#9E3779B9
xor r11d,r11d
mov esi,r9d v1
shl esi, 4 v1<<4 mov edi,r9d v1 shr edi,5 v1>>5
xor edi,esi (v1<<4)^(v1>>5)
add edi,r9d v1+(v1<<4)^(v1>>5)
mov esi,r11d
and esi,3
mov esi,dword ptr [r8+rsi*4] k0=0x3C4ED885
add esi,r11d key[sum&3]+sum
xor esi,edi (key[sum&3]+sum)^(v1+(v1<<4)^(v1>>5))
add eax,esi v0+=(key[sum&3]+sum)^(v1+(v1<<4)^(v1>>5))
add r11d,r10d sum+=del
mov esi,eax v0
shl esi,4 v0<<4 mov edi,eax v0 shr edi,5 v0>>5
xor edi,esi (v0<<4)^(v0>>5)
add edi,eax v0+ (v0<<4)^(v0>>5)
mov esi,r11d sum
shr esi,9 sum>>9
and esi,0Ch (sum>>9)&0xc
mov esi,dword ptr [r8+rsi] key[ (sum>>9)&0xc]
add esi,r11d key[ (sum>>9)&0xc]+sum
xor esi,edi (key[ (sum>>9)&0xc]+sum)^(v0+ (v0<<4)^(v0>>5))
add r9d,esi v1+=(key[ (sum>>9)&0xc]+sum)^(v0+ (v0<<4)^(v0>>5))
dec ecx 00257<\/p>\n\n\n\n

\u8fd9\u91cc\u662f\u4e00\u4e2a\u9b54\u6539\u7684tea,\u5728\u53bb\u67e5\u627e\u4e00\u4e0b\u7a0b\u5e8f\u7684\u5bc6\u6587<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

exp:<\/p>\n\n\n\n

\n
#include<iostream>\n#include<stdlib.h>\n#include<fstream>\nusing namespace std;\nunsigned int v[] = { 0x2a90bfd5, 0xaa53b7ef, 0xfc23b031, 0xdd985d10, 0xff5ceea4, 0x0ade98c1, 0xc5bb1dd3, 0x60a3d0cc, 0xc02fcca9, 0xdd9f252b, 0x9750cd50, 0x808a76e5 };\nunsigned int key[4]{ 0x3c4ed885,0x12af3e87, 0xd6e1b31f,0x25c10aa0 };\nvoid enderpt(int a) {\n\tunsigned int  del = 0x257* 0x9E3779B9;\n\tfor (int i = 0; i < 0x257; i++)\n\t{\n\n\t\tv[a + 1] -= (key[((del >> 9) & 0xc)\/4] + del) ^ (v[a] + ((v[a] << 4) ^ (v[a] >> 5)));\n\t\tdel -= 0x9E3779B9;\n\t\tv[a] -= (key[del & 3] + del) ^ (v[a + 1]+((v[a + 1] << 4) ^ (v[a + 1] >> 5)));\n\n\t}\n}\nint main()\n{\n\t\t\tint num = sizeof(v) \/ sizeof(unsigned int);\n\t\t\tfor (int i = 0; i <num; i+=2)enderpt(i);\t\n\t\t\tfor (int i = 0; i < num; i++)\n\t\t\t{\n\t\t\t\tfor (int j = 0; j <= 3; j++)\n\t\t\t\t{\n\t\t\t\t\tprintf(\"%c\", (((v[i] >> (j * 8))) & 0x7f));\/\/\u5c0f\u7aef\u5e8f\n\t\t\t\t}\n\t\t\t}\n\n}<\/code><\/pre>\n<\/div><\/div>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Author\uff1ashare \u6700\u8fd1\u4e5f\u662f\u5f00\u59cb\u5b66\u4e60\u5185\u6838\u9a71\u52a8\u4e86,\u6765\u590d\u73b0\u4e00\u9053\u9a71\u52a8\u9898\u76ee,\u672c\u6765\u4ee5\u4e3a\u662f\u4e00\u9053\u7b80\u5355\u9898,\u7ed3\u679c\u53d1\u73b0\u662f\u8ddfN […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-164","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/posts\/164","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/comments?post=164"}],"version-history":[{"count":3,"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/posts\/164\/revisions"}],"predecessor-version":[{"id":185,"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/posts\/164\/revisions\/185"}],"wp:attachment":[{"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/media?parent=164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/categories?post=164"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/120.27.213.206\/index.php\/wp-json\/wp\/v2\/tags?post=164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}