Initial commit (from git)
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convert-repo
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; l_w32pe.asm -- loader & decompressor for the w32/pe format
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;
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; This file is part of the UPX executable compressor.
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;
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; Copyright (C) 1996-2000 Markus Franz Xaver Johannes Oberhumer
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; Copyright (C) 1996-2000 Laszlo Molnar
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;
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; UPX and the UCL library are free software; you can redistribute them
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; and/or modify them under the terms of the GNU General Public License as
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; published by the Free Software Foundation; either version 2 of
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; the License, or (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program; see the file COPYING.
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; If not, write to the Free Software Foundation, Inc.,
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; 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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;
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; Markus F.X.J. Oberhumer Laszlo Molnar
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; markus.oberhumer@jk.uni-linz.ac.at ml1050@cdata.tvnet.hu
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;
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%define jmps jmp short
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%define jnzn jnz near
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%define jbn jb near
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%include "macros.ash"
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BITS 32
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SECTION .text
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ORG 0
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; =============
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; ============= ENTRY POINT
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; =============
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%ifdef __PEISDLL1__
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cmp byte [esp + 8], 1
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jnzn reloc_end_jmp
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%endif; __PEMAIN01__
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pushad
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mov esi, 'ESI0' ; relocated
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lea edi, [esi + 'EDI0']
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%ifdef __PEICONS1__
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inc word [edi + 'ICON']
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%else; __PEICONS2__
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add word [edi + 'ICON'],'DR'
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%endif; __PEICONSZ__
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%ifdef __PETLSHAK__
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mov dword [edi + 'TLSA'],'TLSV'
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%endif; __PEMAIN02__
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push edi
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mpass:
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or ebp, byte -1
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; =============
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; ============= DECOMPRESSION
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; =============
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%include "n2b_d32.ash"
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%include "n2d_d32.ash"
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; =============
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%ifdef __PEMULTIP__
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lodsd
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add edi, eax
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jbn mpass
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%endif; __PEMAIN10__
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; =============
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pop esi ; load vaddr
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; =============
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; ============= CALLTRICK
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; =============
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%ifdef __PECALLTR__
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%ifdef __PECTTPOS__
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lea edi, [esi + 'TEXV']
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%else; __PECTTNUL__
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mov edi, esi
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%endif; __PEDUMMY0__
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cjt32 esi
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%endif; __PEDUMMY1__
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; =============
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; ============= IMPORTS
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; =============
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%ifdef __PEIMPORT__
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lea edi, [esi + 'BIMP']
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next_dll:
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mov eax, [edi]
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or eax, eax
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jz imports_done
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mov ebx, [edi+4] ; iat
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lea eax, [eax + esi + 'IMPS']
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add ebx, esi
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push eax
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add edi, byte 8
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call [esi + 'LOAD'] ; LoadLibraryA
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xchg eax, ebp
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next_func:
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mov al, [edi]
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inc edi
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or al, al
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jz next_dll
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mov ecx, edi ; something > 0
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%ifdef __PEIBYORD__
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jns byname
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%ifdef __PEK32ORD__
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jpe not_kernel32
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mov eax, [edi]
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add edi, byte 4
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mov eax, [eax + esi + 'K32O']
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jmps next_imp
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not_kernel32:
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%endif; __PEIMORD1__
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movzx eax, word [edi]
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inc edi
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push eax
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inc edi
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db 0xb9 ; mov ecx,xxxx
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byname:
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%endif; __PEIMPOR2__
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push edi
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dec eax
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repne
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scasb
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push ebp
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call [esi + 'GETP'] ; GetProcAddr
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or eax, eax
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jz imp_failed
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next_imp:
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mov [ebx], eax
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add ebx, byte 4
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jmps next_func
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imp_failed:
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%ifdef __PEIERDLL__
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popad
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xor eax, eax
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retn 0x0c
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%else; __PEIEREXE__
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call [esi + 'EXIT'] ; ExitProcess
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%endif; __PEIMDONE__
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imports_done:
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%endif; __PEIMPOR9__
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; =============
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; ============= RELOCATION
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; =============
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%ifdef __PERELOC1__
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lea edi, [esi + 'BREL']
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; __PERELOC2__
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add edi, byte 4
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; __PERELOC3__
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lea ebx, [esi - 4]
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reloc32 edi, ebx, esi
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%endif; __PERELOC9__
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; =============
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; FIXME: depends on that in PERELOC1 edi is set!!
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%ifdef __PERLOHI0__
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xchg edi, esi
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lea ecx, [edi + 'DELT']
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%endif; __PERLOHIZ__
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%ifdef __PERELLO0__
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db 0xA9
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rello0:
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add [edi + eax], cx
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lodsd
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or eax, eax
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jnz rello0
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%endif; __PERELLOZ__
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; =============
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%ifdef __PERELHI0__
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shr ecx, 16
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db 0xA9
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relhi0:
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add [edi + eax], cx
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lodsd
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or eax, eax
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jnz relhi0
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%endif; __PERELHIZ__
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; =============
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; __PEMAIN20__
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popad
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reloc_end_jmp:
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%ifdef __PERETURN__
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xor eax, eax
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inc eax
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retn 0x0C
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%else; __PEDOJUMP__
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jmp .1+'JMPO'
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.1:
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%endif; __PEDUMMY3__
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; =============
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; ============= CUT HERE
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; =============
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%include "header.ash"
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eof:
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; __PETHEEND__
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section .data
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dd -1
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dw eof
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; vi:ts=8:et:nowrap
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