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46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
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icmpsh - simple reverse ICMP shell
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icmpsh is a simple reverse ICMP shell with a win32 slave and a POSIX compatible master in C or Perl.
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--- Running the Master ---
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The master is straight forward to use. There are no extra libraries required for the C version.
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The Perl master however has the following dependencies:
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* IO::Socket
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* NetPacket::IP
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* NetPacket::ICMP
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When running the master, don't forget to disable ICMP replies by the OS. For example:
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sysctl -w net.ipv4.icmp_echo_ignore_all=1
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If you miss doing that, you will receive information from the slave, but the slave is unlikely to receive
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commands send from the master.
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--- Running the Slave ---
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The slave comes with a few command line options as outlined below:
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-t host host ip address to send ping requests to. This option is mandatory!
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-r send a single test icmp request containing the string "Test1234" and then quit.
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This is for testing the connection.
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-d milliseconds delay between requests in milliseconds
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-o milliseconds timeout of responses in milliseconds. If a response has not received in time,
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the slave will increase a counter of blanks. If that counter reaches a limit, the slave will quit.
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The counter is set back to 0 if a response was received.
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-b num limit of blanks (unanswered icmp requests before quitting
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-s bytes maximal data buffer size in bytes
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In order to improve the speed, lower the delay (-d) between requests or increase the size (-s) of the data buffer.
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