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Add cpu.c, fix rdtsc detection, add cpuid info, add cpuid hv bit detection

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This commit is contained in:
Alberto Ortega 2015-03-19 08:28:19 +01:00
parent e751fd1755
commit d03750ae28
5 changed files with 104 additions and 12 deletions
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5
pafish/Makefile.linux
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@ -4,7 +4,7 @@ LINK = i686-w64-mingw32-gcc
WINDRES = i686-w64-mingw32-windres
OBJ = Objects/MingW/main.o Objects/MingW/common.o Objects/MingW/utils.o Objects/MingW/debuggers.o Objects/MingW/sandboxie.o \
Objects/MingW/vbox.o Objects/MingW/gensandbox.o Objects/MingW/wine.o Objects/MingW/vmware.o \
Objects/MingW/qemu.o Objects/MingW/hooks.o Objects/MingW/pafish_private.res
Objects/MingW/qemu.o Objects/MingW/hooks.o Objects/MingW/cpu.o Objects/MingW/pafish_private.res
LINKOBJ = $(OBJ)
LIBS = -lwsock32 -liphlpapi -lsetupapi -lmpr -s
INCS =
@ -54,5 +54,8 @@ Objects/MingW/qemu.o: $(GLOBALDEPS) qemu.c
Objects/MingW/hooks.o: $(GLOBALDEPS) hooks.c
$(CC) -c hooks.c -o Objects/MingW/hooks.o $(CFLAGS)
Objects/MingW/cpu.o: $(GLOBALDEPS) cpu.c
$(CC) -c cpu.c -o Objects/MingW/cpu.o $(CFLAGS)
Objects/MingW/pafish_private.res: Objects/MingW/pafish_private.rc
$(WINDRES) Objects/MingW/pafish_private.rc --input-format=rc -o Objects/MingW/pafish_private.res -O coff

5
pafish/Makefile.win
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@ -4,7 +4,7 @@ LINK = gcc.exe
WINDRES = windres.exe
OBJ = Objects/MingW/main.o Objects/MingW/common.o Objects/MingW/utils.o Objects/MingW/debuggers.o Objects/MingW/sandboxie.o \
Objects/MingW/vbox.o Objects/MingW/gensandbox.o Objects/MingW/wine.o Objects/MingW/vmware.o \
Objects/MingW/qemu.o Objects/MingW/hooks.o Objects/MingW/pafish_private.res
Objects/MingW/qemu.o Objects/MingW/hooks.o Objects/MingW/cpu.o Objects/MingW/pafish_private.res
LINKOBJ = $(OBJ)
LIBS = -L"C:/MinGW32/lib" -lwsock32 -liphlpapi -lsetupapi -lmpr -s
INCS = -I"C:/MinGW32/include"
@ -54,5 +54,8 @@ Objects/MingW/qemu.o: $(GLOBALDEPS) qemu.c
Objects/MingW/hooks.o: $(GLOBALDEPS) hooks.c
$(CC) -c hooks.c -o Objects/MingW/hooks.o $(CFLAGS)
Objects/MingW/cpu.o: $(GLOBALDEPS) cpu.c
$(CC) -c cpu.c -o Objects/MingW/cpu.o $(CFLAGS)
Objects/MingW/pafish_private.res: Objects/MingW/pafish_private.rc
$(WINDRES) Objects/MingW/pafish_private.rc --input-format=rc -o Objects/MingW/pafish_private.res -O coff

59
pafish/cpu.c Normal file
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@ -0,0 +1,59 @@
#include <windows.h>
#include <stdio.h>
#include "types.h"
#include "cpu.h"
static inline int rdtsc_diff() {
unsigned long long ret, ret2;
unsigned eax, edx;
__asm__ volatile("rdtsc" : "=a" (eax), "=d" (edx));
ret = ((unsigned long long)eax) | (((unsigned long long)edx) << 32);
__asm__ volatile("rdtsc" : "=a" (eax), "=d" (edx));
ret2 = ((unsigned long long)eax) | (((unsigned long long)edx) << 32);
return ret2 - ret;
}
static inline void cpuid_vendor_00(char * vendor) {
int eax, ebx, ecx, edx;
__asm__ volatile("cpuid" \
: "=b"(ebx), \
"=c"(ecx), \
"=d"(edx) \
: "a"(0x00));
sprintf(vendor , "%c%c%c%c", ebx, (ebx >> 8), (ebx >> 16), (ebx >> 24));
sprintf(vendor+4, "%c%c%c%c", edx, (edx >> 8), (edx >> 16), (edx >> 24));
sprintf(vendor+8, "%c%c%c%c", ecx, (ecx >> 8), (ecx >> 16), (ecx >> 24));
vendor[12] = 0x00;
}
static inline int cpuid_hv_bit() {
int ecx;
__asm__ volatile("cpuid" \
: "=c"(ecx) \
: "a"(0x01));
return (ecx >> 31) & 0x1;
}
int cpu_rdtsc() {
int i, avg = 0, diff;
for (i = 0; i < 10; i++) {
diff = rdtsc_diff();
avg = avg + diff;
Sleep(500);
}
return (avg / 10) > 750 ? TRUE : FALSE;
}
int cpu_hv() {
return cpuid_hv_bit() ? TRUE : FALSE;
}
void cpu_write_vendor(char * vendor) {
cpuid_vendor_00(vendor);
}

11
pafish/cpu.h Normal file
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@ -0,0 +1,11 @@
#ifndef CPU_H
#define CPU_H
int cpu_rdtsc();
int cpu_hv();
void cpu_write_vendor(char *);
#endif

36
pafish/main.c
View File

@ -15,6 +15,7 @@
#include "wine.h"
#include "vmware.h"
#include "qemu.h"
#include "cpu.h"
/*
Pafish (Paranoid fish)
@ -35,6 +36,7 @@
int main(int argc, char *argv[])
{
char icon[] = "Blue fish icon thanks to http://www.fasticon.com/", winverstr[32], aux[1024];
char cpu_vendor[13];
OSVERSIONINFO winver;
unsigned short original_colors = 0;
@ -48,11 +50,15 @@ int main(int argc, char *argv[])
snprintf(winverstr, sizeof(winverstr)-sizeof(winverstr[0]), "%d.%d build %d",
winver.dwMajorVersion, winver.dwMinorVersion, winver.dwBuildNumber);
/* Get CPU vendor */
cpu_write_vendor(cpu_vendor);
printf("[*] Windows version: %s\n", winverstr);
printf("[*] CPU vendor: %s\n", cpu_vendor);
snprintf(aux, sizeof(aux)-sizeof(aux[0]), "Windows version: %s", winverstr);
write_log(aux);
printf("[*] Running checks ...\n");
snprintf(aux, sizeof(aux)-sizeof(aux[0]), "CPU vendor: %s", cpu_vendor);
write_log(aux);
/* Debuggers detection tricks */
printf("\n[-] Debuggers detection\n");
@ -75,6 +81,24 @@ int main(int argc, char *argv[])
else print_not_traced();
}
/* CPU information based detection tricks */
printf("\n[-] CPU information detection\n");
printf("[*] Checking the difference between CPU timestamp counters (rdtsc) ... ");
if (cpu_rdtsc() == TRUE) {
print_traced();
write_log("CPU VM traced by checking the difference between CPU timestamp counters (rdtsc)");
write_trace("hi_CPU_VM_rdtsc");
}
else print_not_traced();
printf("[*] Checking hypervisor bit in cpuid feature bits ... ");
if (cpu_hv() == TRUE) {
print_traced();
write_log("CPU VM traced by checking hypervisor bit in cpuid feature bits");
write_trace("hi_CPU_VM_hypervisor_bit");
}
else print_not_traced();
/* Generic sandbox detection tricks */
printf("\n[-] Generic sandbox detection\n");
printf("[*] Using mouse activity ... ");
@ -133,14 +157,6 @@ int main(int argc, char *argv[])
}
else print_not_traced();
printf("[*] Checking the difference between CPU timestamp counters (rdtsc) ... ");
if (gensandbox_rdtsc() == TRUE) {
print_traced();
write_log("Sandbox traced by checking the difference between CPU timestamp counters (rdtsc)");
write_trace("hi_sandbox_rdtsc");
}
else print_not_traced();
/* Hooks detection tricks */
printf("\n[-] Hooks detection\n");
printf("[*] Checking function DeleteFileW method 1 ... ");