module

Dword XOR Encoder (Tag-based)

Disclosed	Created
N/A	Jul 10, 2026

Disclosed

N/A

Created

Jul 10, 2026

Description

Dword XOR encoder for RISC-V 64-bit (Little Endian) using a
tag-based terminator rather than an encoded length. The decoder
loop XORs each dword and stops when the result is zero (the
sentinel). This avoids encoding the payload length in the stub,
eliminating a source of bad character conflicts.

Note: payloads containing 4-byte aligned zero dwords will cause
early loop termination due to collision with the sentinel value.

Author

bcoles [email protected]

Platform

All

Architectures

riscv64le

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':


    msf > use encoder/riscv64le/longxor_tag
    msf encoder(longxor_tag) > show actions
        ...actions...
    msf encoder(longxor_tag) > set ACTION < action-name >
    msf encoder(longxor_tag) > show options
        ...show and set options...
    msf encoder(longxor_tag) > run

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