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Makefile
(440 B)
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_libpe.h
(6.31 KB)
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libpe.h
(3.66 KB)
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libpe_buffer.c
(3.94 KB)
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libpe_coff.c
(13.57 KB)
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libpe_dos.c
(10.09 KB)
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libpe_init.c
(3.58 KB)
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libpe_rich.c
(3.39 KB)
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libpe_section.c
(11.44 KB)
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libpe_utils.c
(2 KB)
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os.Linux.mk
(256 B)
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os.NetBSD.mk
(74 B)
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pe.h
(8.69 KB)
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pe_buffer.c
(2.5 KB)
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pe_cntl.c
(1.81 KB)
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pe_coff.c
(3.26 KB)
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pe_dos.c
(2.76 KB)
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pe_flag.c
(4.11 KB)
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pe_init.c
(2.21 KB)
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pe_rich.c
(2.81 KB)
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pe_section.c
(4.35 KB)
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pe_symtab.c
(2.51 KB)
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pe_update.c
(2.39 KB)
Editing: libpe_rich.c
/*- * Copyright (c) 2015 Kai Wang * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <assert.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include "_libpe.h" ELFTC_VCSID("$Id: libpe_rich.c 3312 2016-01-10 09:23:51Z kaiwang27 $"); static char * memfind(char *s, const char *find, size_t slen, size_t flen) { int i; if (slen == 0 || flen == 0 || flen > slen) return (NULL); for (i = 0; (size_t) i <= slen - flen; i++) { if (s[i] != find[0]) continue; if (flen == 1) return (&s[i]); if (memcmp(&s[i + 1], &find[1], flen - 1) == 0) return (&s[i]); } return (NULL); } int libpe_parse_rich_header(PE *pe) { PE_RichHdr *rh; char *p, *r, *s; uint32_t x; int found, i; assert(pe->pe_stub != NULL && pe->pe_stub_ex > 0); /* Search for the "Rich" keyword to locate the Rich header. */ s = pe->pe_stub + sizeof(PE_DosHdr); r = memfind(s, PE_RICH_TEXT, pe->pe_stub_ex, 4); if (r == NULL || r + 8 > s + pe->pe_stub_ex) { errno = ENOENT; return (-1); } if ((rh = calloc(1, sizeof(*rh))) == NULL) { errno = ENOMEM; return (-1); } rh->rh_xor = le32dec(r + 4); /* Retrieve the "XOR mask" */ /* * Search for the hidden keyword "DanS" by XOR the dwords before * the "Rich" keyword with the XOR mask. */ found = 0; for (p = r - 4; p >= s; p -= 4) { x = le32dec(p) ^ rh->rh_xor; if (x == PE_RICH_HIDDEN) { found = 1; break; } } if (!found) { free(rh); errno = ENOENT; return (-1); } /* * Found the "DanS" keyword, which is the start of the Rich header. * The next step is to skip the first 16 bytes (DanS, XOR mask, * XOR mask, XOR mask) and read the (compid,cnt) tuples. */ pe->pe_rh_start = p; p += 16; rh->rh_total = (r - p) / 8; if ((rh->rh_compid = malloc(rh->rh_total * sizeof(*rh->rh_compid))) == NULL) { free(rh); errno = ENOMEM; return (-1); } if ((rh->rh_cnt = malloc(rh->rh_total * sizeof(*rh->rh_cnt))) == NULL) { free(rh->rh_compid); free(rh); errno = ENOMEM; return (-1); } for (i = 0; (uint32_t) i < rh->rh_total; i++, p += 8) { rh->rh_compid[i] = le32dec(p) ^ rh->rh_xor; rh->rh_cnt[i] = le32dec(p + 4) ^ rh->rh_xor; } pe->pe_rh = rh; return (0); }
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