<div dir="ltr">Thanks for your patience very much and your great work!<div>now i can use the taint plugin(but it seems a little slow) and take my next step.</div></div><div class="gmail_extra"><br><div class="gmail_quote">2015-04-21 12:04 GMT+08:00 Brendan Dolan-Gavitt <span dir="ltr"><<a href="mailto:brendandg@gatech.edu" target="_blank">brendandg@gatech.edu</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Ok! Another option is to try making a recording with only 256M of RAM,<br>
which would need only 4GB to replay.<br>
<br>
One last thing you can try – it is possible that the taint system will<br>
not actually use all of the memory it allocates. In this case, if you<br>
allow the kernel to overcommit memory it may succeed. You can do this<br>
either by setting /proc/sys/vm/overcommit_memory to 1 or by setting<br>
/proc/sys/vm/overcommit_ratio to a higher value. There are more<br>
details about this feature here:<br>
<a href="https://www.kernel.org/doc/Documentation/vm/overcommit-accounting" target="_blank">https://www.kernel.org/doc/Documentation/vm/overcommit-accounting</a><br>
<span class="HOEnZb"><font color="#888888"><br>
-Brendan<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
On Mon, Apr 20, 2015 at 11:54 PM, xiaojuan Li <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>> wrote:<br>
> sorry i make a mistake: my ram size is:<br>
> (free -g)<br>
> total used free shared buffers cached<br>
> Mem: 7 6 1 0 0 2<br>
> -/+ buffers/cache: 3 4<br>
> Swap: 0 0 0<br>
><br>
> before i mistake the size of hardware...<br>
><br>
> there is unlimit.<br>
> I think i should increase the memory chips.<br>
> Thanks !<br>
><br>
> 2015-04-20 23:36 GMT-04:00 Brendan Dolan-Gavitt <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
><br>
>> It is still not able to allocate the memory for the taint system, it<br>
>> seems (based on the "Cannot allocate memory" part). Since you said<br>
>> your host system has 16GB of RAM, I'm not sure what else could be the<br>
>> problem.<br>
>><br>
>> Do you have any memory quota set up on your system? (for example, does<br>
>> "ulimit -v" show any limits on the amount of memory you're allowed to<br>
>> allocate in a single process?)<br>
>><br>
>> -Brendan<br>
>><br>
>> On Mon, Apr 20, 2015 at 11:28 PM, xiaojuan Li <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> wrote:<br>
>> > use the new version, but still segfault :(<br>
>> ><br>
>> > opening nondet log for read :<br>
>> > /home/shentanli/pandanew/scripts/api414-4-20-rr-nondet.log<br>
>> > api414-4-20: 81316759 ( 1.04%) instrs. 7.49 sec. 0.61 GB ram.<br>
>> > api414-4-20: 156342747 ( 2.00%) instrs. 16.14 sec. 0.69 GB ram.<br>
>> > api414-4-20: 234368551 ( 3.00%) instrs. 25.29 sec. 0.76 GB ram.<br>
>> > api414-4-20: 312493247 ( 4.00%) instrs. 36.09 sec. 0.83 GB ram.<br>
>> > api414-4-20: 390616091 ( 5.00%) instrs. 44.62 sec. 0.87 GB ram.<br>
>> > api414-4-20: 468738195 ( 6.00%) instrs. 50.08 sec. 0.90 GB ram.<br>
>> > api414-4-20: 547631582 ( 7.01%) instrs. 54.95 sec. 0.93 GB ram.<br>
>> > api414-4-20: 624983872 ( 8.00%) instrs. 58.64 sec. 0.94 GB ram.<br>
>> > api414-4-20: 703122355 ( 9.00%) instrs. 61.98 sec. 0.94 GB ram.<br>
>> > api414-4-20: 783198179 ( 10.03%) instrs. 65.80 sec. 0.95 GB ram.<br>
>> > READ Match of str 0 at: instr_count=812336749 : 72a7562e b6cb2e02<br>
>> > 0d36c000<br>
>> > tstringsearch: thestring = [passwordisqemu]<br>
>> > tstringsearch: 70 61 73 73 77 6f 72 64 69 73 71 65 6d 75<br>
>> > tstringsearch: string in memory @ 0xa70d6212<br>
>> > enabling taint at instr count 812336749<br>
>> > taint2: __taint_enable_taint<br>
>> > taint2: Creating byte-level taint processor<br>
>> > taint2: Allocating large fast_shad (8589934592 bytes).<br>
>> > taint2: Hugetlb failed. Trying without.<br>
>> > Cannot allocate memory<br>
>> > taint2: Allocating small fast_shad (12800000 bytes) using malloc @<br>
>> > 7f38ff62e010.<br>
>> > taint2: Allocating small fast_shad (256 bytes) using malloc @ 17cda900.<br>
>> > taint2: Allocating small fast_shad (1024 bytes) using malloc @ 17cd91f0.<br>
>> > taint2: Allocating small fast_shad (867840 bytes) using malloc @<br>
>> > 17d24e70.<br>
>> > taint2: Linking taint ops from<br>
>> ><br>
>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_taint2_ops.bc<br>
>> > taint2: Done initializing taint transformation.<br>
>> > taint2: Done processing helper functions for taint.<br>
>> > taint2: Done verifying module. Running...<br>
>> ><br>
>> ><br>
>> > ****************************************************************************<br>
>> > applying taint labels to search string of length 14 @ p=0xa70d6212<br>
>> ><br>
>> > ******************************************************************************<br>
>> > Segmentation fault<br>
>> ><br>
>> ><br>
>> > 2015-04-20 23:18 GMT-04:00 Brendan Dolan-Gavitt <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> ><br>
>> >> That was caused by some code that was left in by mistake from another<br>
>> >> branch of the project. I have fixed it and pushed the change. Once<br>
>> >> again you will need to do git pull && make clean && ./build.sh to<br>
>> >> rebuild.<br>
>> >><br>
>> >> Hopefully this will fix things for you!<br>
>> >><br>
>> >> -Brendan<br>
>> >><br>
>> >> On Mon, Apr 20, 2015 at 11:11 PM, xiaojuan Li <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> wrote:<br>
>> >> > it is the path that caused terminated.<br>
>> >> > i can find that panda_hypercall_struct.h in<br>
>> >> > /qemu/panda_tools/pirate_utils/linux direcroty<br>
>> >> ><br>
>> >> > 2015-04-20 23:02 GMT-04:00 xiaojuan Li <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> ><br>
>> >> >> while rebuild:<br>
>> >> >> taint2.cpp:109:61: fatal error:<br>
>> >> >> ../../../../lava/include/panda_hypercall_struct.h: No such file or<br>
>> >> >> directory<br>
>> >> >> compilation terminated.<br>
>> >> >> miss some files to push?<br>
>> >> >><br>
>> >> >><br>
>> >> >> 2015-04-20 22:56 GMT-04:00 xiaojuan Li <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> >><br>
>> >> >>> you mean that it caused by "allocate at a fixed address"<br>
>> >> >>> i am going to try and thanks.<br>
>> >> >>><br>
>> >> >>> 2015-04-20 22:53 GMT-04:00 Brendan Dolan-Gavitt<br>
>> >> >>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>><br>
>> >> >>>> Ah! I forgot to push the commit I made to stop it from trying to<br>
>> >> >>>> allocate at a fixed address.<br>
>> >> >>>><br>
>> >> >>>> Could you do a git pull, rebuild, and try again?<br>
>> >> >>>><br>
>> >> >>>> -Brendan<br>
>> >> >>>><br>
>> >> >>>> On Mon, Apr 20, 2015 at 10:51 PM, xiaojuan Li<br>
>> >> >>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> >>>> wrote:<br>
>> >> >>>> > 1. the command i use is :<br>
>> >> >>>> > ./qemu-system-arm 0m 512 -replay api414-4-20 -M android_arm<br>
>> >> >>>> > -kernel<br>
>> >> >>>> > /dev/null -android -panda<br>
>> >> >>>> > "stringsearch:name=test;tstringsearch;tainted_instr"<br>
>> >> >>>> > 2.the output is:<br>
>> >> >>>> > Adding PANDA arg stringsearch:name=test.<br>
>> >> >>>> > adding<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_stringsearch.so<br>
>> >> >>>> > to panda_plugin_files 0<br>
>> >> >>>> > adding<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_tstringsearch.so<br>
>> >> >>>> > to panda_plugin_files 1<br>
>> >> >>>> > adding<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_tainted_instr.so<br>
>> >> >>>> > to panda_plugin_files 2<br>
>> >> >>>> > emulator: registered 'boot-properties' qemud service<br>
>> >> >>>> > emulator: Adding boot property: 'dalvik.vm.heapsize' = '48m'<br>
>> >> >>>> > emulator: Adding boot property: 'qemu.sf.fake_camera' = 'both'<br>
>> >> >>>> > emulator: Adding boot property: 'qemu.hw.mainkeys' = '0'<br>
>> >> >>>> > loading<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_stringsearch.so<br>
>> >> >>>> > Initializing plugin stringsearch<br>
>> >> >>>> > panda_require: callstack_instr<br>
>> >> >>>> > loading<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_callstack_instr.so<br>
>> >> >>>> > Initializing plugin callstack_instr<br>
>> >> >>>> > Success<br>
>> >> >>>> > stringsearch: added string of length 14 to search set<br>
>> >> >>>> > Success<br>
>> >> >>>> > loading<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_tstringsearch.so<br>
>> >> >>>> > Initializing tstringsearch<br>
>> >> >>>> > panda_require: stringsearch<br>
>> >> >>>> > panda_load_plugin:<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_stringsearch.so<br>
>> >> >>>> > already loaded<br>
>> >> >>>> > panda_require: taint2<br>
>> >> >>>> > loading<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_taint2.so<br>
>> >> >>>> > Initializing taint plugin<br>
>> >> >>>> > taint2: Instructed not to inline taint ops.<br>
>> >> >>>> > panda_require: callstack_instr<br>
>> >> >>>> > panda_load_plugin:<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_callstack_instr.so<br>
>> >> >>>> > already loaded<br>
>> >> >>>> > Success<br>
>> >> >>>> > Success<br>
>> >> >>>> > loading<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_tainted_instr.so<br>
>> >> >>>> > panda_require: taint2<br>
>> >> >>>> > panda_load_plugin:<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_taint2.so<br>
>> >> >>>> > already loaded<br>
>> >> >>>> > panda_require: callstack_instr<br>
>> >> >>>> > panda_load_plugin:<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_callstack_instr.so<br>
>> >> >>>> > already loaded<br>
>> >> >>>> > Success<br>
>> >> >>>> > goldfish_add_device: goldfish_device_bus, base ff001000 1000,<br>
>> >> >>>> > irq 1<br>
>> >> >>>> > 1<br>
>> >> >>>> > goldfish_device_bus: ff001000 30<br>
>> >> >>>> > goldfish_add_device: goldfish_int, base ff000000 1000, irq 0 0<br>
>> >> >>>> > goldfish_int: ff000000 38<br>
>> >> >>>> > goldfish_add_device: goldfish_timer, base ff003000 1000, irq 3 1<br>
>> >> >>>> > goldfish_timer: ff003000 40<br>
>> >> >>>> > goldfish_add_device: goldfish_rtc, base ff010000 1000, irq 10 1<br>
>> >> >>>> > goldfish_rtc: ff010000 48<br>
>> >> >>>> > goldfish_add_device: goldfish_tty, base ff002000 1000, irq 4 1<br>
>> >> >>>> > goldfish_tty: ff002000 50<br>
>> >> >>>> > android_arm_init serial 1 0<br>
>> >> >>>> > android_arm_init serial 2 0<br>
>> >> >>>> > android_arm_init serial 3 0<br>
>> >> >>>> > goldfish_add_device: smc91x, base ff011000 1000, irq 11 1<br>
>> >> >>>> > goldfish_add_device: goldfish_fb, base ff012000 1000, irq 12 1<br>
>> >> >>>> > goldfish_fb: ff012000 68<br>
>> >> >>>> > Using tmpfile for SD card:<br>
>> >> >>>> > /tmp/android-shentanli/emulator-P6kmpf<br>
>> >> >>>> > goldfish_add_device: goldfish_mmc, base ff005000 1000, irq 13 1<br>
>> >> >>>> > goldfish_mmc: ff005000 70<br>
>> >> >>>> > goldfish_add_device: goldfish_memlog, base ff006000 1000, irq 0<br>
>> >> >>>> > 0<br>
>> >> >>>> > goldfish_memlog: ff006000 78<br>
>> >> >>>> > goldfish_add_device: goldfish-battery, base ff013000 1000, irq<br>
>> >> >>>> > 14 1<br>
>> >> >>>> > goldfish-battery: ff013000 80<br>
>> >> >>>> > goldfish_add_device: goldfish_events, base ff014000 1000, irq 15<br>
>> >> >>>> > 1<br>
>> >> >>>> > goldfish_events: ff014000 88<br>
>> >> >>>> > Using event IRQ<br>
>> >> >>>> > Invalid system partition size for non-QCOW image: 0emulator:<br>
>> >> >>>> > geometry<br>
>> >> >>>> > says<br>
>> >> >>>> > there are 0 blocks<br>
>> >> >>>> ><br>
>> >> >>>> > emulator: Dev size of /tmp/android-shentanli/emulator-jxC2Uf is<br>
>> >> >>>> > 0<br>
>> >> >>>> ><br>
>> >> >>>> > Invalid data partition size for non-QCOW image: 0emulator: Dev<br>
>> >> >>>> > size<br>
>> >> >>>> > 0x0 came<br>
>> >> >>>> > from argument<br>
>> >> >>>> ><br>
>> >> >>>> > emulator: geometry says there are 0 blocks<br>
>> >> >>>> ><br>
>> >> >>>> > emulator: Dev size of /tmp/android-shentanli/emulator-2FZLqg is<br>
>> >> >>>> > 0<br>
>> >> >>>> ><br>
>> >> >>>> > emulator: Dev size 0x0 came from argument<br>
>> >> >>>> ><br>
>> >> >>>> > emulator: geometry says there are 0 blocks<br>
>> >> >>>> ><br>
>> >> >>>> > emulator: Dev size of /tmp/android-shentanli/emulator-lyszWg is<br>
>> >> >>>> > 0<br>
>> >> >>>> ><br>
>> >> >>>> > goldfish_add_device: goldfish_nand, base ff015000 1000, irq 16 1<br>
>> >> >>>> > goldfish_nand: ff015000 90<br>
>> >> >>>> > goldfish_add_device: qemu_pipe, base ff016000 2000, irq 17 1<br>
>> >> >>>> > qemu_pipe: ff016000 98<br>
>> >> >>>> > emulator: control console listening on port 5554, ADB on port<br>
>> >> >>>> > 5555<br>
>> >> >>>> > emulator: can't connect to ADB server: Connection refused<br>
>> >> >>>> > emulator: Realistic sensor emulation is not available, since the<br>
>> >> >>>> > remote<br>
>> >> >>>> > controller is not accessible:<br>
>> >> >>>> > Connection refused<br>
>> >> >>>> > loading snapshot<br>
>> >> >>>> > emulator: Adding boot property: 'dalvik.vm.heapsize' = '48m'<br>
>> >> >>>> > emulator: Adding boot property: 'qemu.sf.fake_camera' = 'both'<br>
>> >> >>>> > emulator: Adding boot property: 'qemu.hw.mainkeys' = '0'<br>
>> >> >>>> > Unknown savevm section or instance 'goldfish_tty' 1<br>
>> >> >>>> > ... done.<br>
>> >> >>>> ><br>
>> >> >>>> > Logging all cpu states<br>
>> >> >>>> > CPU #0:<br>
>> >> >>>> > R00=00000000 R01=c049bcb8 R02=00000000 R03=00000000<br>
>> >> >>>> > R04=c0480000 R05=c04b9948 R06=c048fd34 R07=c047b374<br>
>> >> >>>> > R08=c0a05100 R09=410fc090 R10=00000000 R11=00000000<br>
>> >> >>>> > R12=c049bcb8 R13=c0481fb0 R14=c000e3f4 R15=c00158c8<br>
>> >> >>>> > PSR=60000093 -ZC- A svc32<br>
>> >> >>>> > opening nondet log for read :<br>
>> >> >>>> > /home/shentanli/pandanew/scripts/api414-4-20-rr-nondet.log<br>
>> >> >>>> > api414-4-20: 81316759 ( 1.04%) instrs. 7.52 sec. 0.61 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 156342747 ( 2.00%) instrs. 15.90 sec. 0.69 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 234368551 ( 3.00%) instrs. 24.93 sec. 0.76 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 312493247 ( 4.00%) instrs. 35.45 sec. 0.83 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 390616091 ( 5.00%) instrs. 43.97 sec. 0.87 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 468738195 ( 6.00%) instrs. 49.32 sec. 0.90 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 547631582 ( 7.01%) instrs. 54.12 sec. 0.93 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 624983872 ( 8.00%) instrs. 57.67 sec. 0.94 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 703122355 ( 9.00%) instrs. 60.94 sec. 0.94 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > api414-4-20: 783198179 ( 10.03%) instrs. 64.60 sec. 0.95 GB<br>
>> >> >>>> > ram.<br>
>> >> >>>> > READ Match of str 0 at: instr_count=812336749 : 72a7562e<br>
>> >> >>>> > b6cb2e02<br>
>> >> >>>> > 0d36c000<br>
>> >> >>>> > tstringsearch: thestring = [passwordisqemu]<br>
>> >> >>>> > tstringsearch: 70 61 73 73 77 6f 72 64 69 73 71 65 6d 75<br>
>> >> >>>> > tstringsearch: string in memory @ 0xa70d6212<br>
>> >> >>>> > enabling taint at instr count 812336749<br>
>> >> >>>> > taint2: __taint_enable_taint<br>
>> >> >>>> > taint2: Creating byte-level taint processor<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x10000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x20000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x30000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x40000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x50000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x60000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x70000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x80000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > taint2: Allocating large fast_shad (8589934592 bytes) @<br>
>> >> >>>> > 0x90000000000.<br>
>> >> >>>> > taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> > Cannot allocate memory<br>
>> >> >>>> > taint2: Allocating small fast_shad (12800000 bytes) using malloc<br>
>> >> >>>> > @<br>
>> >> >>>> > 7f8b608d0010.<br>
>> >> >>>> > taint2: Allocating small fast_shad (256 bytes) using malloc @<br>
>> >> >>>> > 16be2a70.<br>
>> >> >>>> > taint2: Allocating small fast_shad (1024 bytes) using malloc @<br>
>> >> >>>> > 171c3540.<br>
>> >> >>>> > taint2: Allocating small fast_shad (867840 bytes) using malloc @<br>
>> >> >>>> > 1720ddd0.<br>
>> >> >>>> > taint2: Linking taint ops from<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > /home/shentanli/pandanew/qemu/arm-softmmu/panda_plugins/panda_taint2_ops.bc<br>
>> >> >>>> > taint2: Done initializing taint transformation.<br>
>> >> >>>> > taint2: Done processing helper functions for taint.<br>
>> >> >>>> > taint2: Done verifying module. Running...<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > ****************************************************************************<br>
>> >> >>>> > applying taint labels to search string of length 14 @<br>
>> >> >>>> > p=0xa70d6212<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > ******************************************************************************<br>
>> >> >>>> > Segmentation fault<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > 2015-04-20 22:42 GMT-04:00 Brendan Dolan-Gavitt<br>
>> >> >>>> > <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> ><br>
>> >> >>>> >> I am currently running your taint replay, and it is (so far)<br>
>> >> >>>> >> working<br>
>> >> >>>> >> fine. Here is the (slightly abbreviated) output I get:<br>
>> >> >>>> >><br>
>> >> >>>> >> api414-4-20: 783198179 ( 10.03%) instrs. 218.26 sec. 0.96<br>
>> >> >>>> >> GB<br>
>> >> >>>> >> ram.<br>
>> >> >>>> >> READ Match of str 0 at: instr_count=812336749 : 72a7562e<br>
>> >> >>>> >> b6cb2e02<br>
>> >> >>>> >> 0d36c000<br>
>> >> >>>> >> tstringsearch: thestring = [passwordisqemu]<br>
>> >> >>>> >> tstringsearch: 70 61 73 73 77 6f 72 64 69 73 71 65 6d 75<br>
>> >> >>>> >> tstringsearch: string in memory @ 0xa70d6212<br>
>> >> >>>> >> enabling taint at instr count 812336749<br>
>> >> >>>> >> taint2: __taint_enable_taint<br>
>> >> >>>> >> taint2: Creating byte-level taint processor<br>
>> >> >>>> >> taint2: Allocating large fast_shad (8589934592 bytes).<br>
>> >> >>>> >> taint2: Hugetlb failed. Trying without.<br>
>> >> >>>> >> taint2: Allocating small fast_shad (12800000 bytes) using<br>
>> >> >>>> >> malloc @<br>
>> >> >>>> >> 7fdd165c6010.<br>
>> >> >>>> >> taint2: Allocating small fast_shad (256 bytes) using malloc @<br>
>> >> >>>> >> 7fdd0bec21a0.<br>
>> >> >>>> >> taint2: Allocating small fast_shad (1024 bytes) using malloc @<br>
>> >> >>>> >> 7fdcfc49ddc0.<br>
>> >> >>>> >> taint2: Allocating small fast_shad (867840 bytes) using malloc<br>
>> >> >>>> >> @<br>
>> >> >>>> >> 7fdcfc4e7db0.<br>
>> >> >>>> >> taint2: Linking taint ops from<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> /scratch/git/pandroid/qemu/arm-softmmu/panda_plugins/panda_taint2_ops.bc<br>
>> >> >>>> >> taint2: Done initializing taint transformation.<br>
>> >> >>>> >> taint2: Done processing helper functions for taint.<br>
>> >> >>>> >> taint2: Done verifying module. Running...<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ****************************************************************************<br>
>> >> >>>> >> applying taint labels to search string of length 14 @<br>
>> >> >>>> >> p=0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ******************************************************************************<br>
>> >> >>>> >> READ Match of str 0 at: instr_count=812336765 : 72a7562e<br>
>> >> >>>> >> b6cb2a2a<br>
>> >> >>>> >> 0d36c000<br>
>> >> >>>> >> tstringsearch: thestring = [passwordisqemu]<br>
>> >> >>>> >> tstringsearch: 70 61 73 73 77 6f 72 64 69 73 71 65 6d 75<br>
>> >> >>>> >> tstringsearch: string in memory @ 0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ****************************************************************************<br>
>> >> >>>> >> applying taint labels to search string of length 14 @<br>
>> >> >>>> >> p=0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ******************************************************************************<br>
>> >> >>>> >> READ Match of str 0 at: instr_count=812337316 : 72a7562e<br>
>> >> >>>> >> b6cb2e4a<br>
>> >> >>>> >> 0d36c000<br>
>> >> >>>> >> tstringsearch: thestring = [passwordisqemu]<br>
>> >> >>>> >> tstringsearch: 70 61 73 73 77 6f 72 64 69 73 71 65 6d 75<br>
>> >> >>>> >> tstringsearch: string in memory @ 0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ****************************************************************************<br>
>> >> >>>> >> applying taint labels to search string of length 14 @<br>
>> >> >>>> >> p=0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ******************************************************************************<br>
>> >> >>>> >> READ Match of str 0 at: instr_count=812337331 : 72a7562e<br>
>> >> >>>> >> b6cb2a2a<br>
>> >> >>>> >> 0d36c000<br>
>> >> >>>> >> tstringsearch: thestring = [passwordisqemu]<br>
>> >> >>>> >> tstringsearch: 70 61 73 73 77 6f 72 64 69 73 71 65 6d 75<br>
>> >> >>>> >> tstringsearch: string in memory @ 0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ****************************************************************************<br>
>> >> >>>> >> applying taint labels to search string of length 14 @<br>
>> >> >>>> >> p=0xa70d6212<br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >><br>
>> >> >>>> >> ******************************************************************************<br>
>> >> >>>> >> api414-4-20: 859399601 ( 11.00%) instrs. 658.13 sec. 3.27<br>
>> >> >>>> >> GB<br>
>> >> >>>> >> ram.<br>
>> >> >>>> >> api414-4-20: 937474512 ( 12.00%) instrs. 1017.48 sec. 4.70<br>
>> >> >>>> >> GB<br>
>> >> >>>> >> ram.<br>
>> >> >>>> >> api414-4-20: 1015597970 ( 13.00%) instrs. 1265.76 sec. 5.58<br>
>> >> >>>> >> GB<br>
>> >> >>>> >> ram.<br>
>> >> >>>> >><br>
>> >> >>>> >> My command line to replay was:<br>
>> >> >>>> >><br>
>> >> >>>> >> arm-softmmu/qemu-system-arm -m 512 -replay api414-4-20 -M<br>
>> >> >>>> >> android_arm<br>
>> >> >>>> >> -cpu cortex-a9 -android -kernel /dev/null -pandalog api.log<br>
>> >> >>>> >> -panda<br>
>> >> >>>> >> 'stringsearch:name=api;tstringsearch;tainted_instr'<br>
>> >> >>>> >><br>
>> >> >>>> >> From the screenshot you posted earlier, it looks like yours had<br>
>> >> >>>> >> already failed by this point. If you are still getting a<br>
>> >> >>>> >> segfault<br>
>> >> >>>> >> with<br>
>> >> >>>> >> this replay, could you post:<br>
>> >> >>>> >><br>
>> >> >>>> >> 1. The full command line you are using (as text, not a<br>
>> >> >>>> >> screenshot)<br>
>> >> >>>> >> 2. The full output from PANDA up to the point where the<br>
>> >> >>>> >> segfault<br>
>> >> >>>> >> happens (as text, not a screenshot)<br>
>> >> >>>> >><br>
>> >> >>>> >> -Brendan<br>
>> >> >>>> >><br>
>> >> >>>> >> On Mon, Apr 20, 2015 at 7:57 PM, xiaojuan Li<br>
>> >> >>>> >> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> >>>> >> wrote:<br>
>> >> >>>> >> > i know you are busy.<br>
>> >> >>>> >> > I just get stuck in this taint step but have no idea no fix<br>
>> >> >>>> >> > it...(use<br>
>> >> >>>> >> > core<br>
>> >> >>>> >> > dump to find where it segfault )<br>
>> >> >>>> >> > here is the 512M version:<br>
>> >> >>>> >> > <a href="http://pan.baidu.com/s/1mgopzIg" target="_blank">http://pan.baidu.com/s/1mgopzIg</a><br>
>> >> >>>> >> > the content of search string .txt is "passwordisqemu"<br>
>> >> >>>> >> > thanks!<br>
>> >> >>>> >> ><br>
>> >> >>>> >> > 2015-04-20 11:32 GMT-04:00 Brendan Dolan-Gavitt<br>
>> >> >>>> >> > <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> >> ><br>
>> >> >>>> >> >> I will try to reproduce from those instructions in the next<br>
>> >> >>>> >> >> couple<br>
>> >> >>>> >> >> days.<br>
>> >> >>>> >> >> Sorry for the delay! Did you post the .rr of the recording<br>
>> >> >>>> >> >> with<br>
>> >> >>>> >> >> 512M<br>
>> >> >>>> >> >> somewhere? I only saw the 2G one.<br>
>> >> >>>> >> >><br>
>> >> >>>> >> >> Thanks,<br>
>> >> >>>> >> >> Brendan<br>
>> >> >>>> >> >><br>
>> >> >>>> >> >> On Mon, Apr 20, 2015 at 8:07 AM, xiaojuan Li<br>
>> >> >>>> >> >> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> >>>> >> >> wrote:<br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>> about the taint segfault, if you cannot download that .rr i<br>
>> >> >>>> >> >>> upload<br>
>> >> >>>> >> >>> before, you can follow the step to reproduce:<br>
>> >> >>>> >> >>> 1)use android studio to create avd, choose api21 target<br>
>> >> >>>> >> >>> android<br>
>> >> >>>> >> >>> 5.0.1<br>
>> >> >>>> >> >>> use<br>
>> >> >>>> >> >>> the default size;you can get the<br>
>> >> >>>> >> >>> cache-img,sdcard.img,data.img<br>
>> >> >>>> >> >>> and<br>
>> >> >>>> >> >>> system.img and then copy kernel-qemu & rmdisk.img from<br>
>> >> >>>> >> >>> sdk/systemimg;<br>
>> >> >>>> >> >>> 2)use pandaCovert.py to convert them and get the<br>
>> >> >>>> >> >>> (cache,data,system)-pandroid.qcow2 as well as kernel and<br>
>> >> >>>> >> >>> initramfs;<br>
>> >> >>>> >> >>> 3)use runpandroid.py(-m 512) to boot emulator;telnet and<br>
>> >> >>>> >> >>> begin_record<br>
>> >> >>>> >> >>> 4)run an app and input a string : end_record;<br>
>> >> >>>> >> >>> 5)use qemu-system-arm to replay(-m 512) with the panda<br>
>> >> >>>> >> >>> plugins:stringsearch,tstringsearch;tainted_instr.(the<br>
>> >> >>>> >> >>> search<br>
>> >> >>>> >> >>> string<br>
>> >> >>>> >> >>> .txt is<br>
>> >> >>>> >> >>> the string you input)<br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>> do you guys get the segfault ?<br>
>> >> >>>> >> >>> how can i fix it?<br>
>> >> >>>> >> >>> Thanks a lot!<br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>> 2015-04-20 17:51 GMT+08:00 xiaojuan Li<br>
>> >> >>>> >> >>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>> excuse me, i have noticed that the ida_taint plugin:"win7<br>
>> >> >>>> >> >>>> only<br>
>> >> >>>> >> >>>> but<br>
>> >> >>>> >> >>>> othre<br>
>> >> >>>> >> >>>> os could be easily added".<br>
>> >> >>>> >> >>>> i have installed ida pro in my system(debian),modified the<br>
>> >> >>>> >> >>>> ida_taint.bat<br>
>> >> >>>> >> >>>> with my ida path,when i use it :./ida_taint.bat name.json<br>
>> >> >>>> >> >>>> qemu-system-arm<br>
>> >> >>>> >> >>>> it failed. it seems not available in linux, is it?<br>
>> >> >>>> >> >>>> Thanks a lot!<br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>> 2015-04-10 21:24 GMT-04:00 Brendan Dolan-Gavitt<br>
>> >> >>>> >> >>>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>>> Once you have used PANDA's taint system to identify the<br>
>> >> >>>> >> >>>>> portions of<br>
>> >> >>>> >> >>>>> the<br>
>> >> >>>> >> >>>>> code that process the data you're interested in, you will<br>
>> >> >>>> >> >>>>> still<br>
>> >> >>>> >> >>>>> have<br>
>> >> >>>> >> >>>>> to<br>
>> >> >>>> >> >>>>> analyze that code do understand how it works. One way to<br>
>> >> >>>> >> >>>>> do<br>
>> >> >>>> >> >>>>> that<br>
>> >> >>>> >> >>>>> might be to<br>
>> >> >>>> >> >>>>> use the scissors plugin to extract out the portion of the<br>
>> >> >>>> >> >>>>> trace<br>
>> >> >>>> >> >>>>> that<br>
>> >> >>>> >> >>>>> contains the code you're interested in, and then replay<br>
>> >> >>>> >> >>>>> it<br>
>> >> >>>> >> >>>>> with<br>
>> >> >>>> >> >>>>> QEMU's "-d<br>
>> >> >>>> >> >>>>> in_asm -D asmlog.txt" options to get the disassembly for<br>
>> >> >>>> >> >>>>> that<br>
>> >> >>>> >> >>>>> code.<br>
>> >> >>>> >> >>>>><br>
>> >> >>>> >> >>>>> Alternatively, you could take a memory snapshot at some<br>
>> >> >>>> >> >>>>> point<br>
>> >> >>>> >> >>>>> when<br>
>> >> >>>> >> >>>>> the<br>
>> >> >>>> >> >>>>> code you want to analyze is in memory (using something<br>
>> >> >>>> >> >>>>> like<br>
>> >> >>>> >> >>>>> the<br>
>> >> >>>> >> >>>>> pmemsave<br>
>> >> >>>> >> >>>>> plugin in PANDA), then use Volatility to analyze that<br>
>> >> >>>> >> >>>>> memory<br>
>> >> >>>> >> >>>>> image<br>
>> >> >>>> >> >>>>> to<br>
>> >> >>>> >> >>>>> extract out the binary, which you could look at in IDA or<br>
>> >> >>>> >> >>>>> something<br>
>> >> >>>> >> >>>>> similar.<br>
>> >> >>>> >> >>>>><br>
>> >> >>>> >> >>>>> Basically – disassemble the code that handles the data<br>
>> >> >>>> >> >>>>> you're<br>
>> >> >>>> >> >>>>> interested in and find out how it works. Exactly what<br>
>> >> >>>> >> >>>>> that<br>
>> >> >>>> >> >>>>> means<br>
>> >> >>>> >> >>>>> will depend<br>
>> >> >>>> >> >>>>> on what you're hoping to accomplish.<br>
>> >> >>>> >> >>>>><br>
>> >> >>>> >> >>>>> -Brendan<br>
>> >> >>>> >> >>>>><br>
>> >> >>>> >> >>>>> On Fri, Apr 10, 2015 at 9:07 PM, xiaojuan Li<br>
>> >> >>>> >> >>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> >>>> >> >>>>> wrote:<br>
>> >> >>>> >> >>>>>><br>
>> >> >>>> >> >>>>>> Hi,<br>
>> >> >>>> >> >>>>>> Thanks for your job first.<br>
>> >> >>>> >> >>>>>> I am a little confused about the result of the<br>
>> >> >>>> >> >>>>>> tainted.how<br>
>> >> >>>> >> >>>>>> can<br>
>> >> >>>> >> >>>>>> I<br>
>> >> >>>> >> >>>>>> get<br>
>> >> >>>> >> >>>>>> enough information about the processing code from the<br>
>> >> >>>> >> >>>>>> binary?<br>
>> >> >>>> >> >>>>>> use<br>
>> >> >>>> >> >>>>>> the gdb?<br>
>> >> >>>> >> >>>>>> Thanks!<br>
>> >> >>>> >> >>>>>><br>
>> >> >>>> >> >>>>>> 2015-04-10 12:05 GMT+08:00 xiaojuan Li<br>
>> >> >>>> >> >>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> >>>> >> >>>>>>><br>
>> >> >>>> >> >>>>>>> Thanks for your guys great work!<br>
>> >> >>>> >> >>>>>>> and I will try.<br>
>> >> >>>> >> >>>>>>><br>
>> >> >>>> >> >>>>>>> 2015-04-10 11:42 GMT+08:00 Brendan Dolan-Gavitt<br>
>> >> >>>> >> >>>>>>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>> Hi,<br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>> Tim has just updated the tainted_instructions tutorial<br>
>> >> >>>> >> >>>>>>>> so<br>
>> >> >>>> >> >>>>>>>> that it<br>
>> >> >>>> >> >>>>>>>> reflects how things work now. Could you look through<br>
>> >> >>>> >> >>>>>>>> that<br>
>> >> >>>> >> >>>>>>>> tutorial and see<br>
>> >> >>>> >> >>>>>>>> if it helps with your problem?<br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>> <a href="https://github.com/moyix/panda/blob/master/docs/tainted_instructions.md" target="_blank">https://github.com/moyix/panda/blob/master/docs/tainted_instructions.md</a><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>> Note that you will probably need to do a "git pull"<br>
>> >> >>>> >> >>>>>>>> and<br>
>> >> >>>> >> >>>>>>>> rebuild<br>
>> >> >>>> >> >>>>>>>> (make clean ; ./build.sh) in order to make sure<br>
>> >> >>>> >> >>>>>>>> everything<br>
>> >> >>>> >> >>>>>>>> works<br>
>> >> >>>> >> >>>>>>>> as it says<br>
>> >> >>>> >> >>>>>>>> in the tutorial.<br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>> -Brendan<br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>> On Thu, Apr 9, 2015 at 9:30 AM, xiaojuan Li<br>
>> >> >>>> >> >>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> >>>> >> >>>>>>>> wrote:<br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>> Now that the panda <a href="http://taint.md" target="_blank">taint.md</a> is not fresh,can you guys<br>
>> >> >>>> >> >>>>>>>>> give<br>
>> >> >>>> >> >>>>>>>>> me<br>
>> >> >>>> >> >>>>>>>>> some<br>
>> >> >>>> >> >>>>>>>>> help?<br>
>> >> >>>> >> >>>>>>>>> I use the replay plugin,here is my command and the<br>
>> >> >>>> >> >>>>>>>>> result.<br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>> the content of pk_search_strings.txt is :"sdt"<br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>> I am confused here:in the paper— Repeatable reverse<br>
>> >> >>>> >> >>>>>>>>> with<br>
>> >> >>>> >> >>>>>>>>> panda:<br>
>> >> >>>> >> >>>>>>>>> :<br>
>> >> >>>> >> >>>>>>>>> it is clear that:if I use the stringsearch and taint<br>
>> >> >>>> >> >>>>>>>>> plugin,when<br>
>> >> >>>> >> >>>>>>>>> it<br>
>> >> >>>> >> >>>>>>>>> matches, the taint label will be put and then taint<br>
>> >> >>>> >> >>>>>>>>> action<br>
>> >> >>>> >> >>>>>>>>> will<br>
>> >> >>>> >> >>>>>>>>> start.but<br>
>> >> >>>> >> >>>>>>>>> when I use it, it seems wrong(the picture showed<br>
>> >> >>>> >> >>>>>>>>> before):no<br>
>> >> >>>> >> >>>>>>>>> taint action<br>
>> >> >>>> >> >>>>>>>>> execute,and i am confused about the tstringsearch's<br>
>> >> >>>> >> >>>>>>>>> result.<br>
>> >> >>>> >> >>>>>>>>> how can i use it to analysis?<br>
>> >> >>>> >> >>>>>>>>> Thanks a lot!<br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>> 2015-04-08 10:14 GMT+08:00 xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> >>>> >> >>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>> I get the replay file by running runandroid script.<br>
>> >> >>>> >> >>>>>>>>>> and<br>
>> >> >>>> >> >>>>>>>>>> i<br>
>> >> >>>> >> >>>>>>>>>> use<br>
>> >> >>>> >> >>>>>>>>>> qemu-system-arm command just to do some replay work.<br>
>> >> >>>> >> >>>>>>>>>> I may not understand you at all in this emal.do you<br>
>> >> >>>> >> >>>>>>>>>> mean<br>
>> >> >>>> >> >>>>>>>>>> that i<br>
>> >> >>>> >> >>>>>>>>>> should gdb the original program rather than the<br>
>> >> >>>> >> >>>>>>>>>> record<br>
>> >> >>>> >> >>>>>>>>>> file?<br>
>> >> >>>> >> >>>>>>>>>> Thansk<br>
>> >> >>>> >> >>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>> 2015-04-08 9:52 GMT+08:00 Brendan Dolan-Gavitt<br>
>> >> >>>> >> >>>>>>>>>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>> Hmm. gdb should normally stop when you get a<br>
>> >> >>>> >> >>>>>>>>>>> segfault.<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>> Are you by any chance running PANDA using the<br>
>> >> >>>> >> >>>>>>>>>>> runandroid<br>
>> >> >>>> >> >>>>>>>>>>> script?<br>
>> >> >>>> >> >>>>>>>>>>> If so, you will need to instead invoke PANDA<br>
>> >> >>>> >> >>>>>>>>>>> manually,<br>
>> >> >>>> >> >>>>>>>>>>> i.e.:<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>> gdb --args arm-softmmu/qemu-system-arm [...]<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>> And then once it crashes, type "bt" at the gdb<br>
>> >> >>>> >> >>>>>>>>>>> prompt<br>
>> >> >>>> >> >>>>>>>>>>> to<br>
>> >> >>>> >> >>>>>>>>>>> get a<br>
>> >> >>>> >> >>>>>>>>>>> backtrace.<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>> -Brendan<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>> On Tue, Apr 7, 2015 at 9:47 PM, xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>> wrote:<br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>> when gdb,it shows:<br>
>> >> >>>> >> >>>>>>>>>>>> and then i see the log:it shows segfault:<br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>> 2015-04-08 9:03 GMT+08:00 xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>> maybe i am wrong.<br>
>> >> >>>> >> >>>>>>>>>>>>> i use the command<br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>> line:"taint2:label_mode=binary,query_outgoing_network=1"and<br>
>> >> >>>> >> >>>>>>>>>>>>> I found that<br>
>> >> >>>> >> >>>>>>>>>>>>> when i use taint2, after it loads<br>
>> >> >>>> >> >>>>>>>>>>>>> panda_taint2.so,it<br>
>> >> >>>> >> >>>>>>>>>>>>> shows:"taint2:instructed not to inline taint ops<br>
>> >> >>>> >> >>>>>>>>>>>>> .success".<br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>> 2015-04-08 8:54 GMT+08:00 xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>>:<br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>> ok.<br>
>> >> >>>> >> >>>>>>>>>>>>>> 1.I want to use taint plugin to get information<br>
>> >> >>>> >> >>>>>>>>>>>>>> about<br>
>> >> >>>> >> >>>>>>>>>>>>>> some<br>
>> >> >>>> >> >>>>>>>>>>>>>> functions(of course, it is closed-source),so I<br>
>> >> >>>> >> >>>>>>>>>>>>>> think I<br>
>> >> >>>> >> >>>>>>>>>>>>>> can<br>
>> >> >>>> >> >>>>>>>>>>>>>> stringsearch<br>
>> >> >>>> >> >>>>>>>>>>>>>> potential data and then taint them and next I<br>
>> >> >>>> >> >>>>>>>>>>>>>> can<br>
>> >> >>>> >> >>>>>>>>>>>>>> locate<br>
>> >> >>>> >> >>>>>>>>>>>>>> the functions which<br>
>> >> >>>> >> >>>>>>>>>>>>>> solves these data.<br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>> 2.the command line I used is :<br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>> stringsearch:name=***;taint2:tainted_instructions=1.<br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>> thanks<br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>> 2015-04-08 8:40 GMT+08:00 Brendan Dolan-Gavitt<br>
>> >> >>>> >> >>>>>>>>>>>>>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>> Could you provide:<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>> 1. What information you're trying to get<br>
>> >> >>>> >> >>>>>>>>>>>>>>> 2. The command line you're using to run PANDA<br>
>> >> >>>> >> >>>>>>>>>>>>>>> with<br>
>> >> >>>> >> >>>>>>>>>>>>>>> the<br>
>> >> >>>> >> >>>>>>>>>>>>>>> taint2<br>
>> >> >>>> >> >>>>>>>>>>>>>>> plugin<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>> ?<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>> Right now I believe taint2 does not produce<br>
>> >> >>>> >> >>>>>>>>>>>>>>> very<br>
>> >> >>>> >> >>>>>>>>>>>>>>> much<br>
>> >> >>>> >> >>>>>>>>>>>>>>> output<br>
>> >> >>>> >> >>>>>>>>>>>>>>> by default. Instead you use the -pandalog<br>
>> >> >>>> >> >>>>>>>>>>>>>>> <filename><br>
>> >> >>>> >> >>>>>>>>>>>>>>> command line option,<br>
>> >> >>>> >> >>>>>>>>>>>>>>> and taint2 will write its results there in<br>
>> >> >>>> >> >>>>>>>>>>>>>>> pandalog<br>
>> >> >>>> >> >>>>>>>>>>>>>>> format; you can then<br>
>> >> >>>> >> >>>>>>>>>>>>>>> read them using pandalog_reader (see<br>
>> >> >>>> >> >>>>>>>>>>>>>>> panda/pandalog_reader.c for details on<br>
>> >> >>>> >> >>>>>>>>>>>>>>> that tool).<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>> -Brendan<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>> On Tue, Apr 7, 2015 at 8:32 PM, xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>> wrote:<br>
>> >> >>>> >> >>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>> when I tried taint2,it showed the same error<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> with<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> taint1,<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> the olny difference is that taint2 has no<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> segfault<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> error,just uninit taint<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> plugin.<br>
>> >> >>>> >> >>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>> 2015-04-08 8:28 GMT+08:00 Brendan Dolan-Gavitt<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>>:<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> Could you be a little more descriptive about<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> how<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> it<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> failed?<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> Segfault? Error message? Incorrect output?<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> -Brendan<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> On Tue, Apr 7, 2015 at 8:27 PM, xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>> wrote:<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> i tried taint2 too,it failed.<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> 2015-04-07 5:20 GMT+08:00 Leek, Timothy -<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> 0559<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> -<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> MITLL<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> <<a href="mailto:tleek@ll.mit.edu">tleek@ll.mit.edu</a>>:<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Also note that the “taint” plugin is<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> somewhat<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> defunct.<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> “taint2” is the one we are actively using<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> and<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> developing.<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Tim Leek<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Technical Staff<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Cyber System Assessments<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> MIT Lincoln Laboratory<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> 781-981-2975<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> From: Brendan Dolan-Gavitt<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> <<a href="mailto:brendandg@gatech.edu">brendandg@gatech.edu</a>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Date: Monday, April 6, 2015 at 5:18 PM<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> To: xiaojuan Li <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Cc: "<a href="mailto:panda-users@mit.edu">panda-users@mit.edu</a>"<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> <<a href="mailto:panda-users@mit.edu">panda-users@mit.edu</a>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Subject: Re: [panda-users] taint<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> segmentation<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> fault<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> Could you run that under gdb and provide us<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> with<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> a<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> backtrace when it crashes?<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> -Brendan<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> On Sunday, April 5, 2015, xiaojuan Li<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>> <<a href="mailto:xiaotan6666@gmail.com">xiaotan6666@gmail.com</a>> wrote:<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> Hi,<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> excuse me,i have a question about taint<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> plugin:(stringsearch:name=***;taint:tainted_instructions=1)<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> when I started it showed success:<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> but when it finished search,it showd<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> "uninit<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> taint<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> plugin segementation fault"<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> how can I fix it?<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> Thanks a lot!<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> _______________________________________________<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> panda-users mailing list<br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> <a href="mailto:panda-users@mit.edu">panda-users@mit.edu</a><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>> <a href="http://mailman.mit.edu/mailman/listinfo/panda-users" target="_blank">http://mailman.mit.edu/mailman/listinfo/panda-users</a><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>><br>
>> >> >>>> >> >>>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>><br>
>> >> >>>> >> >>>>>>>>> --<br>
>> >> >>>> >> >>>>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>>><br>
>> >> >>>> >> >>>>>>><br>
>> >> >>>> >> >>>>>>><br>
>> >> >>>> >> >>>>>>><br>
>> >> >>>> >> >>>>>>> --<br>
>> >> >>>> >> >>>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>>><br>
>> >> >>>> >> >>>>>><br>
>> >> >>>> >> >>>>>><br>
>> >> >>>> >> >>>>>><br>
>> >> >>>> >> >>>>>> --<br>
>> >> >>>> >> >>>>>> wait and hope~~<br>
>> >> >>>> >> >>>>><br>
>> >> >>>> >> >>>>><br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>><br>
>> >> >>>> >> >>>> --<br>
>> >> >>>> >> >>>> wait and hope~~<br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>><br>
>> >> >>>> >> >>> --<br>
>> >> >>>> >> >>> wait and hope~~<br>
>> >> >>>> >> >><br>
>> >> >>>> >> >><br>
>> >> >>>> >> ><br>
>> >> >>>> >> ><br>
>> >> >>>> >> ><br>
>> >> >>>> >> > --<br>
>> >> >>>> >> > wait and hope~~<br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> ><br>
>> >> >>>> > --<br>
>> >> >>>> > wait and hope~~<br>
>> >> >>><br>
>> >> >>><br>
>> >> >>><br>
>> >> >>><br>
>> >> >>> --<br>
>> >> >>> wait and hope~~<br>
>> >> >><br>
>> >> >><br>
>> >> >><br>
>> >> >><br>
>> >> >> --<br>
>> >> >> wait and hope~~<br>
>> >> ><br>
>> >> ><br>
>> >> ><br>
>> >> ><br>
>> >> > --<br>
>> >> > wait and hope~~<br>
>> ><br>
>> ><br>
>> ><br>
>> ><br>
>> > --<br>
>> > wait and hope~~<br>
><br>
><br>
><br>
><br>
> --<br>
> wait and hope~~<br>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">wait and hope~~</div></div>
</div>