This changes the encryption flags on the meterpreter session so that
it's 32 bits (and hence changes the packet header). This also supports
the idea that sessions may use encryption that isn't AES256, so the
flags field will ultimately indicate that. A type flag has been added so
that MSF knows the type that should be done on the wire.
At some point soon we'll add something that makes sure that the packet
encryption type always matches the encryption type expected in MSF, this
will hopefully avoid the risk of having packets injected into the stream
by external entities.
The Session GUID will identify active sessions, and is the beginning of
work that will allow for tracking of sessions that have come back alive
after failing or switching transports.
The 'next' and 'prev' commands were added so that the session can jump
transports without having to add new ones at the same time.
There's also a command which gives the UUID now so that this can be
reused across sessions.
Session expiry, comms timeout, retry total/wait are all now part of all
of the meterpreter payloads as these are going to be used for
maintaining access with resiliency and will aim for consistency across
the payload types.
Ruby treats endianess in pack operators in the opposite way
of python. For example, using pack('<I') actually ignores the
endianess specifier. These need to be 'I<' or better yet, 'V'.
The endian specify must occur after the pack specifier and
multiple instances in meterpreter and exe generation were
broken in thier usage.
The summary:
Instead of I/L or I< use V
Instead of I/L or I> use N
For Q, you need to always use Q< (LE) or Q> (BE)
For c/s/l/i and other lowercase variants, you probably dont
need or want a *signed* value, so stick with vV nN and cC.
I suspect this is a load order issue where sometimes the extension's TLV
types are defined before hitting this and sometimes aren't.
Nevertheless, pretty printing a TLV is not worth breaking all the
payloads.
OJ
Jeffrey Martin
Brent Cook
jvazquez-r7
HD Moore
Jonathan
Tab Assassin
James Lee
James Lee