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손지언
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Showing 19 changed files with 29 additions and 23 deletions
1 export APP_NAME=hello_world 1 export APP_NAME=hello_world
2 export MOD_NAME=hooker 2 export MOD_NAME=hooker
3 3
4 -PWD=$(shell pwd) 4 +PWD := $(shell pwd)
5 APP_PATH=$(PWD)/d$(APP_NAME) 5 APP_PATH=$(PWD)/d$(APP_NAME)
6 MOD_PATH=$(PWD)/d$(MOD_NAME) 6 MOD_PATH=$(PWD)/d$(MOD_NAME)
7 7
......
1 +cmd_/root/hooking/dhooker/hooker.ko := arm-linux-gnueabihf-ld -EL -r -T ./scripts/module-common.lds --build-id -o /root/hooking/dhooker/hooker.ko /root/hooking/dhooker/hooker.o /root/hooking/dhooker/hooker.mod.o
1 -cmd_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o := arm-linux-gnueabihf-gcc -Wp,-MD,/root/OSSPractice/lab5-2/hooking_prac/dhooker/.hooker.mod.o.d -nostdinc -isystem /usr/lib/gcc-cross/arm-linux-gnueabihf/5/include -I./arch/arm/include -Iarch/arm/include/generated/uapi -Iarch/arm/include/generated -Iinclude -I./arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Iarch/arm/mach-bcm2709/include -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -fno-PIE -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fno-ipa-sra -mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp -funwind-tables -marm -D__LINUX_ARM_ARCH__=7 -march=armv7-a -msoft-float -Uarm -fno-delete-null-pointer-checks -Wno-maybe-uninitialized -O2 --param=allow-store-data-races=0 -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -pg -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO -D"KBUILD_STR(s)=\#s" -D"KBUILD_BASENAME=KBUILD_STR(hooker.mod)" -D"KBUILD_MODNAME=KBUILD_STR(hooker)" -DMODULE -c -o /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.c 1 +cmd_/root/hooking/dhooker/hooker.mod.o := arm-linux-gnueabihf-gcc -Wp,-MD,/root/hooking/dhooker/.hooker.mod.o.d -nostdinc -isystem /usr/lib/gcc-cross/arm-linux-gnueabihf/5/include -I./arch/arm/include -Iarch/arm/include/generated/uapi -Iarch/arm/include/generated -Iinclude -I./arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Iarch/arm/mach-bcm2709/include -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -fno-PIE -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fno-ipa-sra -mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp -funwind-tables -marm -D__LINUX_ARM_ARCH__=7 -march=armv7-a -msoft-float -Uarm -fno-delete-null-pointer-checks -Wno-maybe-uninitialized -O2 --param=allow-store-data-races=0 -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -pg -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO -D"KBUILD_STR(s)=\#s" -D"KBUILD_BASENAME=KBUILD_STR(hooker.mod)" -D"KBUILD_MODNAME=KBUILD_STR(hooker)" -DMODULE -c -o /root/hooking/dhooker/hooker.mod.o /root/hooking/dhooker/hooker.mod.c
2 2
3 -source_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o := /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.c 3 +source_/root/hooking/dhooker/hooker.mod.o := /root/hooking/dhooker/hooker.mod.c
4 4
5 -deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o := \ 5 +deps_/root/hooking/dhooker/hooker.mod.o := \
6 $(wildcard include/config/module/unload.h) \ 6 $(wildcard include/config/module/unload.h) \
7 include/linux/module.h \ 7 include/linux/module.h \
8 $(wildcard include/config/modules.h) \ 8 $(wildcard include/config/modules.h) \
...@@ -438,6 +438,6 @@ deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o := \ ...@@ -438,6 +438,6 @@ deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o := \
438 include/linux/vermagic.h \ 438 include/linux/vermagic.h \
439 include/generated/utsrelease.h \ 439 include/generated/utsrelease.h \
440 440
441 -/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o: $(deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o) 441 +/root/hooking/dhooker/hooker.mod.o: $(deps_/root/hooking/dhooker/hooker.mod.o)
442 442
443 -$(deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o): 443 +$(deps_/root/hooking/dhooker/hooker.mod.o):
......
1 -cmd_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o := arm-linux-gnueabihf-gcc -Wp,-MD,/root/OSSPractice/lab5-2/hooking_prac/dhooker/.hooker.o.d -nostdinc -isystem /usr/lib/gcc-cross/arm-linux-gnueabihf/5/include -I./arch/arm/include -Iarch/arm/include/generated/uapi -Iarch/arm/include/generated -Iinclude -I./arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Iarch/arm/mach-bcm2709/include -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -fno-PIE -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fno-ipa-sra -mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp -funwind-tables -marm -D__LINUX_ARM_ARCH__=7 -march=armv7-a -msoft-float -Uarm -fno-delete-null-pointer-checks -Wno-maybe-uninitialized -O2 --param=allow-store-data-races=0 -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -pg -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO -DMODULE -D"KBUILD_STR(s)=\#s" -D"KBUILD_BASENAME=KBUILD_STR(hooker)" -D"KBUILD_MODNAME=KBUILD_STR(hooker)" -c -o /root/OSSPractice/lab5-2/hooking_prac/dhooker/.tmp_hooker.o /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.c 1 +cmd_/root/hooking/dhooker/hooker.o := arm-linux-gnueabihf-gcc -Wp,-MD,/root/hooking/dhooker/.hooker.o.d -nostdinc -isystem /usr/lib/gcc-cross/arm-linux-gnueabihf/5/include -I./arch/arm/include -Iarch/arm/include/generated/uapi -Iarch/arm/include/generated -Iinclude -I./arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Iarch/arm/mach-bcm2709/include -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -fno-PIE -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fno-ipa-sra -mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp -funwind-tables -marm -D__LINUX_ARM_ARCH__=7 -march=armv7-a -msoft-float -Uarm -fno-delete-null-pointer-checks -Wno-maybe-uninitialized -O2 --param=allow-store-data-races=0 -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -pg -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO -DMODULE -D"KBUILD_STR(s)=\#s" -D"KBUILD_BASENAME=KBUILD_STR(hooker)" -D"KBUILD_MODNAME=KBUILD_STR(hooker)" -c -o /root/hooking/dhooker/.tmp_hooker.o /root/hooking/dhooker/hooker.c
2 2
3 -source_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o := /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.c 3 +source_/root/hooking/dhooker/hooker.o := /root/hooking/dhooker/hooker.c
4 4
5 -deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o := \ 5 +deps_/root/hooking/dhooker/hooker.o := \
6 include/linux/kernel.h \ 6 include/linux/kernel.h \
7 $(wildcard include/config/lbdaf.h) \ 7 $(wildcard include/config/lbdaf.h) \
8 $(wildcard include/config/preempt/voluntary.h) \ 8 $(wildcard include/config/preempt/voluntary.h) \
...@@ -824,6 +824,6 @@ deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o := \ ...@@ -824,6 +824,6 @@ deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o := \
824 arch/arm/include/generated/asm/local.h \ 824 arch/arm/include/generated/asm/local.h \
825 include/asm-generic/local.h \ 825 include/asm-generic/local.h \
826 826
827 -/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o: $(deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o) 827 +/root/hooking/dhooker/hooker.o: $(deps_/root/hooking/dhooker/hooker.o)
828 828
829 -$(deps_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o): 829 +$(deps_/root/hooking/dhooker/hooker.o):
......
1 +/root/hooking/dhooker/hooker.ko
2 +/root/hooking/dhooker/hooker.o
...@@ -2,6 +2,8 @@ ...@@ -2,6 +2,8 @@
2 #include <linux/module.h> 2 #include <linux/module.h>
3 #include <linux/syscalls.h> 3 #include <linux/syscalls.h>
4 #include <linux/string.h> 4 #include <linux/string.h>
5 +#include <linux/sched.h>
6 +
5 #define SYSCALL_TABLE_BASE_ADDR (0x8000fc28) 7 #define SYSCALL_TABLE_BASE_ADDR (0x8000fc28)
6 #define MANAGER_PERMISSION (0xff) 8 #define MANAGER_PERMISSION (0xff)
7 9
...@@ -10,15 +12,18 @@ unsigned int g_uPrevAP = 0x00; ...@@ -10,15 +12,18 @@ unsigned int g_uPrevAP = 0x00;
10 unsigned int g_uNewAP = MANAGER_PERMISSION; 12 unsigned int g_uNewAP = MANAGER_PERMISSION;
11 unsigned int (* sys_write_orig)(int fd, char *byf, size_t count); 13 unsigned int (* sys_write_orig)(int fd, char *byf, size_t count);
12 14
15 +
13 //sys_write_orig() 호출 전 pBuF의 내용 수정 16 //sys_write_orig() 호출 전 pBuF의 내용 수정
14 unsigned int sys_write_hooked(int nFD, char *pBuf, size_t nCnt){ 17 unsigned int sys_write_hooked(int nFD, char *pBuf, size_t nCnt){
15 - if(nFD == 1 && current->comm != "dmesg"){ 18 +
16 - printk("current process: %s\n",current->comm); 19 + if(nFD == 1){
17 - if(current->comm == "hello_world"){ 20 +
18 - printk("hello world 호출\n"); 21 + if(current->comm != "dmesg" && current->comm != "resolvconf"){
22 + printk("current process name : %s\n",current->comm);
23 + }
24 +
19 memset(pBuf, 0, nCnt); 25 memset(pBuf, 0, nCnt);
20 strcpy(pBuf, "Hacked!!!\n"); 26 strcpy(pBuf, "Hacked!!!\n");
21 - }
22 return sys_write_orig(nFD,pBuf, nCnt); 27 return sys_write_orig(nFD,pBuf, nCnt);
23 } 28 }
24 else{ 29 else{
...@@ -28,9 +33,9 @@ unsigned int sys_write_hooked(int nFD, char *pBuf, size_t nCnt){ ...@@ -28,9 +33,9 @@ unsigned int sys_write_hooked(int nFD, char *pBuf, size_t nCnt){
28 } 33 }
29 34
30 int __init Hook_Init(void){ 35 int __init Hook_Init(void){
31 -
32 sys_write_orig = (void *)g_puSysTableAddr[__NR_write]; 36 sys_write_orig = (void *)g_puSysTableAddr[__NR_write];
33 37
38 + printk("외않되?\n");
34 __asm__ __volatile__("mrc p15, 0, %0, c3, c0" : "=r"(g_uPrevAP)); 39 __asm__ __volatile__("mrc p15, 0, %0, c3, c0" : "=r"(g_uPrevAP));
35 __asm__ __volatile__("mrc p15, 0, %0, c3, c0" : : "r"(g_uNewAP)); 40 __asm__ __volatile__("mrc p15, 0, %0, c3, c0" : : "r"(g_uNewAP));
36 41
...@@ -51,3 +56,4 @@ void __exit Hook_Exit(void){ ...@@ -51,3 +56,4 @@ void __exit Hook_Exit(void){
51 56
52 module_init(Hook_Init); 57 module_init(Hook_Init);
53 module_exit(Hook_Exit); 58 module_exit(Hook_Exit);
59 +MODULE_LICENSE("GPL");
......
...@@ -19,8 +19,8 @@ __used ...@@ -19,8 +19,8 @@ __used
19 __attribute__((section("__versions"))) = { 19 __attribute__((section("__versions"))) = {
20 { 0xb344870e, __VMLINUX_SYMBOL_STR(module_layout) }, 20 { 0xb344870e, __VMLINUX_SYMBOL_STR(module_layout) },
21 { 0x2e5810c6, __VMLINUX_SYMBOL_STR(__aeabi_unwind_cpp_pr1) }, 21 { 0x2e5810c6, __VMLINUX_SYMBOL_STR(__aeabi_unwind_cpp_pr1) },
22 - { 0xfa2a45e, __VMLINUX_SYMBOL_STR(__memzero) },
23 { 0x27e1a049, __VMLINUX_SYMBOL_STR(printk) }, 22 { 0x27e1a049, __VMLINUX_SYMBOL_STR(printk) },
23 + { 0xfa2a45e, __VMLINUX_SYMBOL_STR(__memzero) },
24 { 0xb1ad28e0, __VMLINUX_SYMBOL_STR(__gnu_mcount_nc) }, 24 { 0xb1ad28e0, __VMLINUX_SYMBOL_STR(__gnu_mcount_nc) },
25 }; 25 };
26 26
...@@ -30,4 +30,4 @@ __attribute__((section(".modinfo"))) = ...@@ -30,4 +30,4 @@ __attribute__((section(".modinfo"))) =
30 "depends="; 30 "depends=";
31 31
32 32
33 -MODULE_INFO(srcversion, "F027612343C6A28CC173B86"); 33 +MODULE_INFO(srcversion, "2F28819604D362F973EB9E8");
......
1 +kernel//root/hooking/dhooker/hooker.ko
1 -cmd_/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.ko := arm-linux-gnueabihf-ld -EL -r -T ./scripts/module-common.lds --build-id -o /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.ko /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o /root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.mod.o
1 -/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.ko
2 -/root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.o
1 -kernel//root/OSSPractice/lab5-2/hooking_prac/dhooker/hooker.ko