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SLAE32 Certification - Papers - Phrozen
Assignment N°4 - Encoder (NASM)
14 Jun 2020
Assignment Goals (SLAE-1530)
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Create a custom encoding scheme.
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PoC with using execve-stack as the shellcode.
Creating our own encoder
Shellcode encoders are useful for two main reasons:
- Minimize the risk of getting cough by detection systems.
- Avoid bad characters from our original shellcode.
An encoder take a shellcode in input and output a different looking shellcode without affecting it functionality.
The main disadvantage with encoding is that your shellcode size will naturally increase.
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