Video: In-Depth Obfuscated VBA Analysis

This script concatenates strings such as “a” + “b”:

from Pro.UI import *
import re

ctx = proContext()
v = ctx.getCurrentView()
if v.isValid() and v.hasSelection():
    s = v.getSelectedText().replace('" &', '" +')
    s = eval(s)
    v.setSelectedText('"' + s + '"')

This second script decrypts strings the same way as the “NobosMeik” function:

from Pro.UI import *
import base64

ctx = proContext()
v = ctx.getCurrentView()
if v.isValid() and v.hasSelection():
    s = v.getSelectedText()
    s = base64.b64decode(s)
    key = b"versache"
    s2 = bytearray(s)
    y = 0
    tire = lambda r, g: (r & ~g) | (~r & g)
    for x in range(len(s)):
        s2[x] = tire(s2[x], key[y])
        if y < len(key) - 1:
            y += 1
        else:
            y = 0
    print(s2)

One thought on “Video: In-Depth Obfuscated VBA Analysis”

Leave a Reply

Your email address will not be published.