let's talk about polymorphism. if ur stub has the same MD5/SHA signature for more than 2 hours, ur doing it wrong.
my workflow:
i build a small engine that injects random 'junk code' (NOP slides, meaningless math ops) and re-encrypts the main payload using a unique key for every single execution.
the trick:
use custom XOR/AES implementations instead of the standard libraries. standard libs are flagged by heuristic scanners instantly. i even use some custom assembly blocks to make the decryption routine look like a random game engine function.
keep ur payloads clean and ur signatures fresh mate! $$$
polymorphic malware development: obfuscation 101
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21 April, 2026 at 11:15 AM
#1
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21 April, 2026 at 11:30 AM
#2
junk code injection is underrated. it breaks so many static analysis tools lol
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21 April, 2026 at 11:45 AM
#3
bro custom AES is a pain to write but it's the only way to stay FUD :D
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21 April, 2026 at 12:02 PM
#4
wat about the import table? i use dynamic api loading to keep it clean
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21 April, 2026 at 12:15 PM
#5
dynamic loading is a must mate. if u see 'kernel32.dll' in ur imports u r already dead lol
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21 April, 2026 at 12:30 PM
#6
lol 'kernel32.dll' is basically a red flag for any scanner :D
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21 April, 2026 at 12:45 PM
#7
how do u handle the entropy levels? high entropy usually means encrypted payload lol
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21 April, 2026 at 01:00 PM
#8
u need to pad the file with high-quality English text strings to lower the entropy mate. works every time :D
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21 April, 2026 at 01:15 PM
#9
lol 'English text strings' is a classic trick. i use legal documents for padding $$$
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21 April, 2026 at 01:30 PM
#10
legal documents? mate u r a genius lol
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21 April, 2026 at 01:45 PM
#11
it makes the file look legitimate to any heuristic scanner :D
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21 April, 2026 at 02:00 PM
#12
wat about the entry point? do u use custom entry points?
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21 April, 2026 at 02:15 PM
#13
yep, custom crt and no standard main entry mate. makes reversing a nightmare lol
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21 April, 2026 at 02:30 PM
#14
nightmare for them, profit for us $$$
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21 April, 2026 at 02:45 PM
#15
is it possible to use this with c# or only c++?
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21 April, 2026 at 03:00 PM
#16
c# is harder because of the jit but u can use native aot to make it polymorphic mate :D
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21 April, 2026 at 03:15 PM
#17
native aot is a game changer for c# malware lol
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21 April, 2026 at 03:30 PM
#18
still prefer c++ for absolute control lol
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21 April, 2026 at 03:45 PM
#19
true, c++ is the king mate :D
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21 April, 2026 at 04:00 PM
#20
nice breakdown. i'm going to implement the junk code engine tonight!