Description
Encodes payloads as alphanumeric uppercase text. This encoder uses SkyLined's Alpha2 encoding suite. A pure alpha encoder is impossible without having a register that points at or near the shellcode. In a default configuration the first few bytes at the beginning are an fnstenv getpc stub (the same as used in shikata_ga_nai) and thus are not alphanumeric. You can set BufferRegister for full alpha (see Encoder options for details).
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/x86/alpha/uppermsf undefined(upper) > show actions ...actions...msf undefined(upper) > set ACTION < action-name >msf undefined(upper) > show options ...show and set options...msf undefined(upper) > runPrioritise with Active Threat Intelligence
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