Stageless Mettle with Malleable C2 profile support#294
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Replace the CLI-argument-only configuration path with a TLV config block that the framework patches into the binary at generation time. This brings mettle in line with the Windows, Python, Java, and PHP Meterpreter implementations that all use Rex::Payloads::Meterpreter::Config. - Add C2 TLV constants (700-725 series) to tlv_types.h - Add 8KB CONFIG_BLOCK placeholder in main.c with signature-based patching, checked before CLI args and injection detection at startup - Add tlv_packet_from_raw() to tlv.c for wrapping GROUP TLV children - Parse UUID, session GUID, session expiry, debug log, and C2 transport groups from the config packet - Add c2_transport_config and c2_verb_config structs to c2.h - Add c2_add_transport_uri_config() to attach parsed config to transports - Parse C2 GET/POST profile sub-groups including URI, encoding flags, prefix/suffix, prefix/suffix skip, and UUID placement options - Implement profile-aware HTTP transport: per-verb URL building, Base64/Base64URL encode/decode, prefix/suffix wrapping on egress, prefix/suffix stripping and decoding on ingress, UUID in query param/header/cookie - Apply TLV transport config (UA, custom headers) during HTTP transport init alongside legacy pipe-separated URI args - Update mettle.rb to patch CONFIG_BLOCK into binaries - Fix json-c calloc argument order for modern GCC The legacy DEFAULT_OPTS CLI path is preserved as a fallback.
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This PR modifies Mettle so that it supports the following:
This code relies on the changes that are part of the Metasploit Framework PR. Discussion and more details can be found over there.
I'm PR'ing against
main, but should probably be part of the6.5release.