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454 Commits

Author SHA1 Message Date
John Reiser
7c766b3313 Check e_shstrndx and Shdr.st_name 
https://github.com/upx/upx/issues/235  POC10
	modified:   p_lx_elf.cpp
 2018-12-15 20:27:20 -08:00
John Reiser
91b81b587b Abandon when outrageous Elf64_Dyn.d_tag 
https://github.com/upx/upx/issues/235  POC8
	modified:   p_lx_elf.cpp
 2018-12-15 19:35:13 -08:00
John Reiser
780a4347b8 Check DT_HASH and DT_GNU_HASH. 
https://github.com/upx/upx/issues/235  POC2,POC4
Also cleanup checking of symbol number and .st_name
in POC1,POC3,POC5,POC7,POC9,POC11
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-12-15 19:16:14 -08:00
John Reiser
606ad08dd1 Check symbol number and .st_name 
https://github.com/upx/upx/issues/235  POC1,POC3,POC7,POC9
	modified:   p_elf_enum.h
	modified:   p_lx_elf.h
	modified:   p_lx_elf.cpp
 2018-12-14 21:32:49 -08:00
John Reiser
f88b85e126 MSVC error C4146: unary minus operator applied to unsigned type, result still unsigned 
modified:   p_lx_elf.cpp
 2018-10-09 20:27:19 -07:00
John Reiser
cb8b1595a1 Pay more attention to 0==.e_shnum 
modified:   p_lx_elf.cpp
 2018-10-09 19:38:43 -07:00
John Reiser
37d6a34e58 MSVC is a nimrod. (All verions 10.0 through 14.1) 
"(4074): error C4146: unary minus operator applied to unsigned type, result still unsigned"
So what?  Many programmers are much better than the typical Microsoft coder.
The C standard GUARANTEES that unsigned arithmetic uses two's complement,
ignores overflow, and the result is what the hardware adder produces.
	modified:   p_lx_elf.cpp
 2018-09-23 20:45:07 -07:00
John Reiser
0051dfc84f --android-shlib: Relocate ABS _edata etc. 
https://github.com/upx/upx/issues/220
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-09-16 15:10:40 -07:00
John Reiser
9f294e6ce5 Fix "upx -d" de-compression when input is compressed Android shlib. 
https://github.com/upx/upx/issues/220
	modified:   p_lx_elf.cpp
 2018-09-16 13:09:43 -07:00
John Reiser
6489ec9bba Fix PT_LOAD for ELF shared library. 
modified:   p_lx_elf.cpp
 2018-08-20 19:36:27 -07:00
John Reiser
8f9713ed53 Appease MSVC warning C4018: s/igned/unsigned mismatch 
modified:   p_lx_elf.cpp
 2018-08-13 18:47:42 -07:00
John Reiser
90eb68b3b9 Adapt to 4 PT_LOAD in binutils-2.31 and gcc-8.2.1 (Fedora 29) 
0:        PF_R: .gnu.hash .dynsym .dynstr
1: PF_X | PF_R: .plt .plt.sec .text
2:        PF_R: .rodata .hash
3: PF_W | PF_R: .data.rel.ro .dynamic .got .got.plt .data .bss
	modified:   p_lx_elf.cpp

https://github.com/upx/upx/issues/212 (partial, Fedora 29)
 2018-08-13 17:36:56 -07:00
John Reiser
95fcbcb4f2 ::PackLinuxElf64amd() sets lg2_page back to 12. 
https://github.com/upx/upx/issues/212 (partial, Fedora 29)
	modified:   p_lx_elf.cpp
 2018-08-10 20:28:40 -07:00
John Reiser
d9288213ec More checking of PT_DYNAMIC and its contents. 
https://github.com/upx/upx/issues/206
	modified:   p_lx_elf.cpp
 2018-05-17 21:48:26 -07:00
John Reiser
614c86fb7d --force-pie inhibits treating as shared library (for 'rust', etc.) 
https://github.com/upx/upx/issues/200
	modified:   main.cpp
	modified:   options.h
	modified:   p_lx_elf.cpp
 2018-04-26 13:44:17 -07:00
John Reiser
9f651ee40f Ignore ElfXX_Shdr if not CMD_COMPRESS; beware unpack when PT_DYNAMIC in other PT_LOAD 
https://github.com/upx/upx/issues/200
	modified:   p_lx_elf.cpp
 2018-04-26 08:34:58 -07:00
John Reiser
774c8c3fd4 Fix forgotten get_teXX() in canPack() and invert_pt_dynamic() 
https://github.com/upx/upx/issues/200
	modified:   p_lx_elf.cpp
 2018-04-25 23:05:17 -07:00
John Reiser
8a793d5942 ELF shlib when no DT_INIT (especially --android-shlib) 
https://github.com/upx/upx/issues/191
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-04-04 09:15:18 -07:00
John Reiser
f1a31b4793 ELf32::unpack; Elf64 parity with Elf32 for shlib with no DT_INIT 
https://github.com/upx/upx/issues/191  [partial, not finished]
	modified:   p_lx_elf.cpp
 2018-03-27 19:15:47 -07:00
John Reiser
5e9b6bd69d more ELF shlib when no DT_INIT (especially Android): hook DT_INIT_ARRAY[0] 
https://github.com/upx/upx/issues/191  [partial, not finished]
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
	modified:   stub/src/arm.v4a-linux.shlib-init.S
	modified:   stub/src/arm.v4t-linux.shlib-init.S
 2018-03-26 16:30:52 -07:00
John Reiser
9b990c4eae clarity 
modified:   p_lx_elf.cpp
 2018-03-24 13:52:29 -07:00
John Reiser
7a625a449a ELF shlib without DT_INIT: steal a DT_NULL from PT_DYNAMIC 
https://github.com/upx/upx/issues/191  [partial, not finished]
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-03-24 09:41:58 -07:00
John Reiser
6722e8972e cleanup dead variables: is_big, all_pages 
modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-03-23 08:06:31 -07:00
John Reiser
90a1322929 Also check for wrap-around when checking oversize involving e_shoff and e_shnum. 
raised by https://github.com/upx/upx/pull/190
	modified:   p_lx_elf.cpp
 2018-03-15 21:25:20 -07:00
John Reiser
95cedb6640 upgrade ::unpack for --android-shlib 
modified:   p_elf_enum.h
    	modified:   p_lx_elf.cpp
    	modified:   p_lx_elf.h
    	modified:   stub/src/arm64-linux.shlib-init.S
    	modified:   stub/src/arm.v4t-linux.shlib-init.S
 2018-02-02 14:50:56 -08:00
John Reiser
d736da4208 Elf32, not shared lib: leave alone the hole between .text and .data 
In theory Linux might put pages there (and that would be a problem),
but postpone closing the gap until more experience.
	modified:   p_lx_elf.cpp
 2018-01-28 13:30:10 -08:00
John Reiser
be83788666 --android-shlib for 32-bit ARM 
Includes better handling of asl_delta in execution stub.

    	modified:   p_lx_elf.cpp
    	modified:   p_lx_elf.h
    	modified:   stub/src/arm.v4t-linux.shlib-init.S
    	modified:   stub/src/arm64-linux.shlib-init.S
 2018-01-27 22:00:16 -08:00
John Reiser
5a28a51abc android shlib: better handling of asl_delta in execution stub 
modified:   p_lx_elf.cpp
    	modified:   stub/src/arm64-linux.shlib-init.S
 2018-01-26 12:35:06 -08:00
John Reiser
8a84df752c Compiler nit: ptr->ENUM is not always considered a constant 
modified:   p_lx_elf.cpp
 2018-01-26 11:54:33 -08:00
John Reiser
85f53b210d de-compression of arm64 --android-shlib 
modified:   src/p_lx_elf.cpp
	modified:   src/p_lx_elf.h
	modified:   src/stub/src/arm64-linux.shlib-init.S
 2018-01-24 15:39:46 -08:00
John Reiser
5d13c6cd01 elfout is unset for shlib in PackLinuxElf64::updateLoader 
modified:   p_lx_elf.cpp
 2018-01-22 16:15:53 -08:00
John Reiser
e1d20fd0b5 Fix wobble in PackLinuxElf64::pack2 
modified:   p_lx_elf.cpp
 2018-01-22 13:48:26 -08:00
John Reiser
d1035ecd8f Fix PLT for --android-shlib 
modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-01-22 13:05:18 -08:00
Markus F.X.J. Oberhumer
05e44b9644 Fix powerpc64 cross build. 2018-01-19 15:05:43 +01:00
Markus F.X.J. Oberhumer
021c8db58a Welcome 2018. 2018-01-19 10:55:32 +01:00
John Reiser
86745721ee MSVC strikes again 
modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2018-01-15 16:27:00 -08:00
John Reiser
c34fe09a79 Revamp --android-shlib 
Android "Oreo" wants to deal with ElfXX_Shdr[].  So splice 4KiB into PT_LOAD[0]
with an "extra" copy of them.  This requires careful relocation processing.
It also costs a page at run time, and an average of a page in the file
(depending on fragmentation at the boundary between r-x and rw- .)

https://github.com/upx/upx/issues/124
https://github.com/upx/upx/issues/139
https://github.com/upx/upx/issues/142

	modified:   p_elf_enum.h
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
	modified:   stub/src/arm.v4a-linux.shlib-init.S
	modified:   stub/src/arm.v4t-linux.shlib-init.S
	modified:   stub/src/arm64-linux.shlib-init.S

	modified:   stub/arm.v5a-linux.shlib-init.h
	modified:   stub/arm.v5t-linux.shlib-init.h
	modified:   stub/arm64-linux.shlib-init.h

	modified:   ../.github/travis_testsuite_1.sh
 2018-01-15 16:08:34 -08:00
John Reiser
df94f4288a picky, picky 
modified:   p_lx_elf.cpp
 2018-01-11 12:09:43 -08:00
John Reiser
969efe687d MSVC pecadillos 
modified:   p_lx_elf.cpp
	modified:   pefile.cpp
 2018-01-11 12:01:00 -08:00
John Reiser
4854c03096 uint64_t ==> upx_uint64_t 
MSVC error C2065: 'uint64_t' : undeclared identifier
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
	modified:   p_mach.cpp
 2018-01-06 09:33:04 -08:00
John Reiser
e853119c77 canonicalize bool in OR 
MSVC error C4805: '|' : unsafe mix of type 'bool' and type 'unsigned int' in operation
	modified:   p_lx_elf.cpp
 2018-01-06 09:20:46 -08:00
John Reiser
507e19945e more checking of PT_DYNAMIC 
https://github.com/upx/upx/issues/166
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2017-12-30 22:31:50 -08:00
John Reiser
e04bf9e4bc more checking of PT_DYNAMIC 
https://github.com/upx/upx/issues/164
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
 2017-12-28 17:40:04 -08:00
John Reiser
990988f920 More checking of input Phdr and Shdr 
https://github.com/upx/upx/issues/157
	modified:   p_lx_elf.cpp
 2017-12-18 10:36:43 -08:00
John Reiser
7c21c4513e Android 64-bit ARM shared library stub: use 4Ki page size until more is known 
https://github.com/upx/upx/issues/124
	modified:   p_lx_elf.cpp
	modified:   stub/arm64-linux.shlib-init.h
	modified:   stub/src/arm64-linux.shlib-init.S
	modified:   stub/tmp/arm64-linux.shlib-init.bin.dump
 2017-12-08 20:05:21 -08:00
John Reiser
b413f3da26 ELF shared library: PT_NOTE can prevent packing 
Android build environment post-processing is adding a PT_NOTE
("Android", 21, "r16-beta1") at the high end of PT_LOAD[0],
above the stub; the runtime linker looks there before de-compression.
https://github.com/upx/upx/issues/124
	modified:   p_lx_elf.cpp
 2017-11-20 10:08:24 -08:00
John Reiser
19c2c1edcf Android 8.0 (Oreo) wants 0!=.e_shstrndx in a shared library 
https://github.com/upx/upx/issues/142
It should not matter what the .sh_name is; only the .sh_type matters.
	modified:   p_lx_elf.cpp
 2017-11-07 11:12:23 -08:00
John Reiser
0430e7931e PowerPC64 stub: on syscall, real Linux trashes r13 and below 
(except r1, r2, and input args!) So, r12 .e_entry for musl
must copy from a saved register.  [qemu-ppc64 doesn't trash registers!]
	modified:   ../.github/travis_testsuite_1.sh
	modified:   p_lx_elf.cpp
	modified:   stub/src/amd64-linux.elf-main.c
	modified:   stub/src/powerpc64le-linux.elf-fold.S
	also .h  .fold.map
 2017-10-27 20:07:32 -07:00
John Reiser
e61ada944d debug info for shared library on stderr under "-D" 
modified:   p_lx_elf.cpp
 2017-10-25 21:32:17 -07:00
John Reiser
38c8b84a26 Align hatch_off. 
modified:   p_lx_elf.cpp
 2017-10-20 17:23:55 -07:00