Method: Rex::Encoder::Alpha2::UnicodeMixed.gen_decoder

Defined in:
lib/rex/encoder/alpha2/unicode_mixed.rb

.gen_decoder(reg, offset) ⇒ Object 



49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
 
# File 'lib/rex/encoder/alpha2/unicode_mixed.rb', line 49

def self.gen_decoder(reg, offset)
  decoder =
    gen_decoder_prefix(reg, offset) +
    "j" +               # push 0
    "XA" +              # pop eax, NOP
    "QA" +              # push ecx, NOP
    "DA" +              # inc esp, NOP
    "ZA" +              # pop edx, NOP
    "BA" +              # inc edx, NOP
    "RA" +              # push edx, NOP
    "LA" +              # dec esp, NOP
    "YA" +              # pop ecx, NOP
    "IA" +              # dec ecx, NOP
    "QA" +              # push ecx, NOP
    "IA" +              # dec ecx, NOP
    "QA" +              # push ecx, NOP
    "IA" +              # dec ecx, NOP
    "hAAA" +            # push 00410041, NOP
    "Z" +               # pop edx
    "1A" +              # add [ecx], dh NOP
    "IA" +              # dec ecx, NOP
    "IA" +              # dec ecx, NOP
    "J" +               # dec edx
    "1" +               # add [ecx], dh
    "1A" +              # add [ecx], dh NOP
    "IA" +              # dec ecx, NOP
    "IA" +              # dec ecx, NOP
    "BA" +              # inc edx, NOP
    "BA" +              # inc edx, NOP
    "B" +               # inc edx
    "Q" +               # add [ecx], dl
    "I" +               # dec ecx
    "1A" +              # add [ecx], dh NOP
    "I" +               # dec ecx
    "Q" +               # add [ecx], dl
    "IA" +              # dec ecx, NOP
    "I" +               # dec ecx
    "Q" +               # add [ecx], dh
    "I" +               # dec ecx
    "1" +               # add [ecx], dh
    "1" +               # add [ecx], dh
    "1A" +              # add [ecx], dh NOP
    "IA" +              # dec ecx, NOP
    "J" +               # dec edx
    "Q" +               # add [ecx], dl
    "YA" +              # pop ecx, NOP
    "Z" +               # pop edx
    "B" +               # add [edx], al
    "A" +               # inc ecx       <-------
    "B" +               # add [edx], al         |
    "A" +               # inc ecx               |
    "B" +               # add [edx], al         |
    "A" +               # inc ecx               |
    "B" +               # add [edx], al         |
    "A" +               # inc ecx               |
    "B" +               # add [edx], al         |
    "kM" +              # imul eax, [eax], 10 * |
    "A" +               # add [edx], al         |
    "G" +               # inc edi               |
    "B" +               # add [edx], al         |
    "9" +               # cmp [eax], eax        |
    "u" +               # jnz ------------------
    "4JB"

  return decoder
end