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Implement a series of functions that facilitate remote control
connections, i.e. connections that control session information, allow
exfiltration of data, etc. from the command server.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Remove the functions doing I/O on socket operations. These functions are
designed for single-threaded applications or for non-blocking sockets;
neither of which mini-rat has.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Instead of printing to stdout, print to a file or socket descriptor.
This will allow remote control connections to be implemented relatively
easily.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fix a bug in which run_exec would print garbage values into the socket
and to stdout.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Create a directory for files that are shared between the reference
client and server. Refactor the build scripts to reflect this
restructuring.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fix a bug in the num_sessions function in which the current active
session would not be counted.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fix a bug in which print_hostinfo would check for a positive return
value from read_session instead of a negative value.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a proper timeout message to the print_hostinfo function.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fixed a bug inside the session control logic that disallowed a timeout
value.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fix a bug in which calling the 'stop' command on a session already
closed would crash the C&C server.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add several helper functions to the main file of the C&C server that
perform actions requested by the user.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fix a memory access violation in str_split() that would cause the C&C
server to crash unexpectedly.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Make the functions that relay data to and from session sockets be
uniform in function and arguments.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Mark the socket in the worker function as non-blocking and run poll().
This should be done in order to prevent a slow loris attack on the C&C
server.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Create a new file for utility functions, including those that strip
whitespace from and break apart strings.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a function that returns the number of current sessions.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Return the number of bytes written to a session socket handle or -1 on
error.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Simplify the function read_session and provide some error checking. This
function should now return -1 if a valid session with the given ID
cannot be found.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a check in init_session that returns -1 if malloc cannot create a
new session.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a function that processes incoming user commands.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Print LOG_WARNING and LOG_SEVERE messages into stderr.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a main header and source file so that every required header is
checked against the config.h generated by autoconf.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add functions to initialize and control individual sessions.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add functions that initialize and control the server listening socket.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a close function to close the file handle pointing at the log file.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a logging framework so the server can output to a single point.
Signed-off-by: Danny Holman <dholman@gymli.org>
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