133 Commits

Author SHA1 Message Date
s1341
f4c4d9044f
Use the new bolts::cli with the frida_libpng sample (#541)
* Use the new bolts::cli with the frida_libpng sample

* Fix comment and add must_use

* Fix windows

* Fix windows more

* Fix windows more, more

* Fix windows more, more, more

* Remove comma

* fmt
2022-03-01 11:25:11 +01:00
Dongjia Zhang
3c4ec38d83
Win Fix (#513)
* win_fix

* fmt

* another fmt
2022-02-02 00:26:10 +01:00
Dongjia Zhang
fb21c4ff82
Frida Runtime Tuples (#457)
* an attempt to make runtimes into tuples

* wip

* wip

* wipp

* getter

* refactor

* fmt

* fix

* compiles

* fuzzer change

* coverage working

* asan & less unwrap() & fixes

* inst size, fmt

* build & coverage works on asan

* amd64 fix
2022-02-01 14:34:53 +01:00
Dominik Maier
6810e6085b
Builder for CommandExecutor & Tokens Refactoring (#508)
* builder for CommandExecutor

* tokens api cleanup, clippy

* fix doctest

* cleanup

* added testcase, remodelled

* command executor builder fix

* fix fuzzer(?)

* implemented From for configurator

* nits

* clippy

* unused

* autotokens

* cleanup

* nits

* Err instead of empty tokens

* fix tokens fn

* fix err

* more error fixing

* tokens remodelling

* typo

* recoverable fail on missing autotokens

* clippy, nostd

* asslice, into_iter, etc. for tokens

* adapt fuzzers

* iter

* fixes, clippy

* fix

* more clippy

* no_std

* more fix

* fixed typo

* cmd_executor builds again

* bring back ASAN stuff to Command Executor

* forkserver speedup

* no need to static

* back to earlier
2022-02-01 10:10:47 +01:00
Dongjia Zhang
93f28b41be
Update frida README.md (#503) 2022-01-28 10:11:06 +01:00
Dongjia Zhang
03c020f4bd
Asan fix (#485) 2022-01-21 09:08:21 +01:00
Dominik Maier
77e5965e97
Add AsSlice, AsMutSlice traits, refactor MapObservers to be iterable, and have associated types (#477)
* from warning

* fix latest clippy

* clippy fixes++

* renamed shmem parameters

* renamed map to shmem

* make forkserver executor work for any (non-system) shmem

* Mem -> ShMem

* rework windows

* fix nit

* fix symbolic

* refacctor map observers

* iterator for map observers

* removed unused ownedptr, added asslice trait to most functions

* make map entry type an associated type

* fix fuzzers

* fix docs

* typo fix

* fix windows, add try_from_slice to shmid

* missing import

* fix fuzzbench

* cleanup

* fmt

* more asslice

* fmt

* added doc link about token-level fuzzing

* cods
2022-01-19 00:02:33 +01:00
Andrea Fioraldi
bca1f392a7
Bump to 0.7.1 (#465)
* bump to 0.7.1

* bump libafl_qemu
2022-01-13 11:32:57 +01:00
Dongjia Zhang
327ff98ea1
Asan fix (#460)
* fix

* fix

* bump

* fmt
2022-01-09 21:00:04 +01:00
Dominik Maier
6d9763c51f
Move to clap 3.0 (#447)
* move to clap 3.0

* fix cargo.toml

* update symcc to use clap3
2022-01-04 23:53:12 +01:00
Dominik Maier
af3d321213
Derive debug for all structs in LibAFL (#442)
* documentation, warnings

* fixed docs

* docs

* no_std

* test

* windows

* nautilus docs

* more fixes

* more docs

* nits

* windows clippy

* docs, windows

* nits

* debug all the things

* derive debug for all core library components

* Docu for libafl_targets

* nits

* reordered generics

* add docs to frida, debug

* nits

* fixes

* more docu for frida, nits

* more docu

* more docu

* Sugar docs

* debug for qemu

* more debug

* import debug

* fmt

* debug

* anyap_debug feature no longer needed

* tidy up unused fn

* indicate if we left out values for struct debug

* implement Debug for sugar

* debug allthethings

* ci
2022-01-03 00:47:17 +01:00
Dominik Maier
efc804fe7d
Updated dependencies (#443)
* updated dependencies

* updated info in toml

* Windows fixes

* fixed immport

* u32 -> i32

* ignore i32 overflows in constants

* removed unused double allow
2022-01-02 17:52:44 +01:00
Dongjia Zhang
b537539b54
Use MiMalloc for in-process fuzzers (#439)
* MiMalloc

* docu

* other fuzzers

* mention asan
2021-12-30 16:33:23 +01:00
s1341
b5153cc525
Frida various fixes (#436)
* Make drcov post_exec dependent on whether drcov is enabled

* Fix find_smallest_fit algorithm

* Fix missing ?

* fix warnings

* fix

* todo for non-linux/android shadow, clippy

* typo

* removed unsupposted eq

* cleanup, docu

* libafl::Error

* fixed import

Co-authored-by: tokatoka <tokazerkje@outlook.com>
Co-authored-by: Dominik Maier <domenukk@gmail.com>
2021-12-29 18:47:33 +01:00
Dongjia Zhang
6e59e5bdc7
Frida Refactor: Separate Frida other helper functions into each Runtime (#418)
* separate asan

* fmt

* move asan out of helper.rs

* fmt

* move cmplog out of helper.rs

* fmt

* fix

* fix

* fix

* fix

* fix

* fix

* fix

* fix

* fix

* final fix & fmt

* Fix unused imports

* Fmt

* rename files

* fix Makefile

* fmt

* clippy

Co-authored-by: s1341 <github@shmarya.net>
Co-authored-by: Dominik Maier <domenukk@gmail.com>
2021-12-16 14:16:01 +01:00
Dominik Maier
a8845ccbe7
Fix makefile for frida_libpng (#422)
* fix Makefile

* revert unfinished changes from #418

Co-authored-by: tokatoka <tokazerkje@outlook.com>
2021-12-15 12:30:33 +01:00
Dominik Maier
217a7dee1d
Use Structopt instead of yaml for example fuzzers, introduce Cores API (#420)
* reworked generic_inmemory to structopt

* moved core parsing to a struct

* added Cores

* added structopt to libpng_ctx

* improved libafl, added structopt to libpng launcher

* fix deexit ub

* move more to structopt

* improve llvm-config detection

* move construct_automata to structopt

* clippy, fixes, ...

* no_std

* clippy

* frida core parsing

* fixed no-fork cores

* updated clap

* added missing import

* missing borrow

* reworked frida to structopt

* fixed build

* using Cores api for atheris

Co-authored-by: Dominik Maier <d.maier@avm.de>
2021-12-15 03:58:35 +01:00
Dongjia Zhang
62291654bd
Frida_libpng document change (#401)
* change

* change
2021-12-04 16:19:41 +01:00
Andrea Fioraldi
37b8cb0d2f Bump to 0.7 2021-12-01 17:22:09 +01:00
Toka
6cd2d69bfc
fix (#388) 2021-11-23 17:01:08 +01:00
Dominik Maier
e978b4f281 fmt 2021-11-17 18:14:15 +01:00
Toka
fd869ba1cd
Frida Refactor: Frida executor (#374)
* frida executor

* add files

* fmt & clippy

* fmt

* fix

* fmt

* fix & fmt
2021-11-17 12:51:39 +01:00
Toka
c7512fceec
Frida Refactor: Split FridaHelper into each Runtime (#368)
* dynasm maybe_log

* create coverage_rt, trim helper

* add

* amd64 working

* aarch64 instrumentation, untested

* asan dir

* Revert "asan dir"

This reverts commit c7afc784819072d9fa7b8ce23adb7c9f07a21b10.

* non x86_64 fix

* clippy

* change

* change

* fix

* Fix aarch64-linux-android build

* Fix aarch64 execution

* Fix fmt

Co-authored-by: s1341 <github@shmarya.net>
2021-11-16 12:30:34 +01:00
Dominik Maier
62afed61e2
Renamed Stats to Monitors (#373)
* renamed stats to monitors

* added depreciation notices

* resorted generics alphaabetically

* added monitors

* fmt fuzzers

* added depreciation note for usermonitor

* fmt all fuzzers script

* more fmt

* renamed some monitor things back to stats

* fixed rename
2021-11-12 11:01:08 +01:00
expend20
1ea95e73f4
(#354)
Co-authored-by: expy <expy@>
2021-11-05 14:50:44 +01:00
expend20
5000558f71
Readme impromevent in frida_libpng fuzzer. (#350)
Co-authored-by: expy <expy@>
2021-11-05 13:46:19 +01:00
Andrea Fioraldi
d1700f8775
Refcnt for MapIndexesMetadata (#348)
* refcnt for MapIndexesMetadata

* fix clippy
2021-11-05 12:14:57 +01:00
Toka
bf67b6ca76
Frida Address Sanitizer for x86_64 (#331)
* remove libafl_tests

* fmt

* fix

* fix

* fix

* first

* width

* start working on runtime side

* experimental c code for generate_shadow_check_function

* generate shadow_check_blob

* add

* debuggin

* fix

* passes assert tests

* cargo fmt

* generate_shadow_check_blob, untested

* save flags

* add

* make registers numbers a const

* register frames?

* comment

* debugging memcpy

* fix a bug, more to come

* finally error removed

* finally working function hooking & clean up

* fix for arm & update stub

* fix

* blob

* blob_check_mem works? (at least no errors) & fmt

* add an link to show how the asm code are generated

* put probe code for aarch64 back & clippy

* fmt

* still blob emitting errors

* fmt

* now that blob works?

* stack alignment

* testing speed with hook_function only

* comment some printlns out

* small fix: ignore rep, jmp to current_report_impl iff blob_check_mems are emitted

* make rip accessible by pc()

* Program counter accessors for both arch

* fmt

* fix

* fix offset

* retrieve accessed memory addr, r/w rip

* inspect the fault triggering instruction

* AsanError Classification

* clippy fixes

* pass basereg/indexreg/disp to AsanErros

* update asanerrors for amd64

* clippy

* fmt

* use frida/frida-rust

* just use 44

* fix debug build

* fix

* fix

* crate.io

* change

* fmt
2021-11-05 06:37:28 +01:00
Jordan McLeod
3d436b7519
Upgrade to Rust 2021 Edition (#340)
* Enable missing const_xxh3 feature

* Move to Rust 2021 Edition

* Fix clippy complaints

* Remove imports made unecessary in 2021 edition
2021-11-04 09:59:49 +01:00
Dominik Maier
3f1130a8a4
fixes for frida mode for win and checks in rust 1.56 (#334)
* fixes for frida mode for win

* missing bracket

* fix docs

* fix docs, add windows ci

* disable breaking ci
2021-10-25 11:49:34 +02:00
Toka
f63b862160
Frida for Windows (#287)
* harness.cc for win

* no backtrace for frida_gum

* build.rs message

* cfg guards

* at least libafl_frida builds with cfg guards

* fuzzer.rs builds on win

* clean up

* build instructions

* ps

* fix

* clang

* fix

* article

* static option to make it run on powershell

* vscode build instructions

* dllexport!

* fix

* build.rs

* fix & fmt

* message

* msys not necessary anymore

* Update README.md

Co-authored-by: Dominik Maier <domenukk@gmail.com>
2021-09-29 22:10:15 +02:00
Dominik Maier
55c4b0c778
added write_file_atomic against ondisk corpus races (#294)
* fix ondisk corpus race condition

* move metadata name to be a dotfile

* note ExitKind for crashes and timeouts in inprocess executor

* potential fix for windows

* added write_file_atomic

* no_std fixes

* no_std testcase fix

* typo fix, windows

* clippy

* more no_std testing
2021-09-13 15:38:28 +02:00
Dominik Maier
9eba674467 implement Debug for EventManagerId 2021-09-12 12:26:08 +02:00
s1341
b4aa22458d
Add core_id to launcher run_client closure signature (#290)
* Add core_id to launcher run_client closure signature

* Format

* Attempt to fix windows build

* windows

* Sleep for index seconds instead of id seconds when launching cores (#292)
2021-09-12 09:49:36 +02:00
Andrea Fioraldi
6ae36ce658
Refactor configurations with EventConfig (#277)
* switch to EventConfig

* adapt fuzzers

* fix tests

* fix sugar

* clippy

* ahash
2021-08-26 13:25:03 +02:00
Andrea Fioraldi
951b6fef36 Bump 0.6.1 2021-08-23 10:01:22 +02:00
julihoh
dcf107a30a
symcc_runtime dependency fix for next libafl version & bump to 0.6.0 (#268)
* symcc_runtime dependency fix for next libafl version

* bump to 0.6.0

Co-authored-by: Andrea Fioraldi <andreafioraldi@gmail.com>
2021-08-18 10:57:55 +02:00
Dominik Maier
bb21ab7a63
Autolaunch ShMemService, add MacOS fuzzers to CI, various fixes (#246)
* starting to fix macos linker bugs

* mdetailed error prints

* start shmem service manually

* not a doc comment

* Some fixes

* only send exit msg to shmemservice when start was successful

* incorporated shmem service into provider

* removed unused imports

* trying to fix fuzzers

* fixed build

* check if join_handle is_some

* more debug prints

* fixed shmem service autolaunch

* fixed macos linker

* ignoring broken libpng testcase on macos for now (see #252)

* fmt

* try to fix missing llvm_config (see #253)

* empty issue template added

* Mmanually look for llvm-config on MacOS

* fixing CI

* fixed docs

* ignoring libmozjpg for CI, see #254
2021-08-09 01:10:29 +02:00
Dominik Maier
16c3a07be7
ShMem Server for MacOS (#238)
* generalized ashmem server

* fixed macos testcases

* added StdShMemService

* no_st

* fmt

* added testcase, fixed some bugs (not all)

* solidified unix shmem

* initial impl for MmapShMem

* Added shmem service start to more testcases

* clippy

* fixed tetcases

* added frida_libpng makefile for easy use

* trying to fix build on ubuntu

* fixed ubuntu build for libpng

* no_std

* fixed testcase
2021-08-05 17:08:01 +02:00
julihoh
3d98d31712
Concolic Tracing (#160)
* add stub runtime that links with symcc common runtime code

* implement tracing runtime to generate message file

* move ShMemCursor to libafl proper

* qualify enum imports to make clippy happy

* fix warnings

* formatting

* update symcc submodule to point to AFL++ org repo

* fix naming of ShMemCursor and remove std requirement

* ensure runtime is named correctly after compilation

* add devcontainer files for easier development

(will be removed later)

* move rust nightly install into devcontainer.json

this makes it run after the container has been built

* dev container: install recommended packages

* switch to building rust runtime from SymCC cmake

* install corrosion in dev container for cmake-cargo integration

* add smoke test for symcc-runtime integration

* update symcc submodule

* add rustfmt to devcontainer

* properly mark the end of a constraint trace

Using a special "End" message

* small tool to dump constraints from a traced process

* extend smoke test to include parsing & printing of constraints

* update symcc submodule

* first draft of expression filters for concolic

* fix type in runtime method name

* update symcc submodule

* implement extensions to serdeany map:

* remove -> Option<T>
* insert_boxed(Box<T>) (avoids allocation if value is already boxed)

* implement std::io::Seek for ShMemCursor

* implement framing for in-memory traces

this allows to efficiently get the length of trace.
this is important for efficiently copying the trace out of the shared
memory region.

* fix for serdeany map

* fuzzer that associates concolic traces with test
case

* ensure runtime can handle 0-expressions

* move metadata, observer and feedback into separate files

* convert executor to command executor and move to separate file

* refactoring and streamlining

* move panic mode configuration to cmake script

* compile cmake from source, because debians version is too old.........

* use separate stage for tracing

* fix dockerfile

* move runtime into the workspace

using prior work on compilation flags from cmake

* actually make use of selective symbolication filter

* update to support latest symcc changes

* implement hitmap for concolic runtime

* clippy

* implement selective symbolization and coverage map for dump_constraints tool

* use concolic runtime coverage for concolic fuzzer feedback

* actually kill process on timeout

* be extra careful after killing process

* increase command executor busy wait to 5ms

* implement concolic tracing stage

* address naming issue

* implement floating point expression filter for runtime

* rename expression filters to be less verbose

* implement expression pruning

* implement ConcolicMutationalStage

* refactor command executor and remove busy loop

* implement generic command executor

* remove debug prints

* refactor + documentation

* refactor

* add stub runtime that links with symcc common runtime code

* implement tracing runtime to generate message file

* move ShMemCursor to libafl proper

* qualify enum imports to make clippy happy

* fix warnings

* formatting

* update symcc submodule to point to AFL++ org repo

* fix naming of ShMemCursor and remove std requirement

* ensure runtime is named correctly after compilation

* add devcontainer files for easier development

(will be removed later)

* move rust nightly install into devcontainer.json

this makes it run after the container has been built

* dev container: install recommended packages

* switch to building rust runtime from SymCC cmake

* install corrosion in dev container for cmake-cargo integration

* add smoke test for symcc-runtime integration

* update symcc submodule

* add rustfmt to devcontainer

* properly mark the end of a constraint trace

Using a special "End" message

* small tool to dump constraints from a traced process

* extend smoke test to include parsing & printing of constraints

* update symcc submodule

* first draft of expression filters for concolic

* fix type in runtime method name

* update symcc submodule

* implement extensions to serdeany map:

* remove -> Option<T>
* insert_boxed(Box<T>) (avoids allocation if value is already boxed)

* implement std::io::Seek for ShMemCursor

* implement framing for in-memory traces

this allows to efficiently get the length of trace.
this is important for efficiently copying the trace out of the shared
memory region.

* fix for serdeany map

* fuzzer that associates concolic traces with test
case

* ensure runtime can handle 0-expressions

* move metadata, observer and feedback into separate files

* convert executor to command executor and move to separate file

* refactoring and streamlining

* move panic mode configuration to cmake script

* compile cmake from source, because debians version is too old.........

* use separate stage for tracing

* fix dockerfile

* move runtime into the workspace

using prior work on compilation flags from cmake

* actually make use of selective symbolication filter

* update to support latest symcc changes

* implement hitmap for concolic runtime

* clippy

* implement selective symbolization and coverage map for dump_constraints tool

* use concolic runtime coverage for concolic fuzzer feedback

* actually kill process on timeout

* be extra careful after killing process

* increase command executor busy wait to 5ms

* implement concolic tracing stage

* address naming issue

* implement floating point expression filter for runtime

* rename expression filters to be less verbose

* implement expression pruning

* implement ConcolicMutationalStage

* refactor command executor and remove busy loop

* implement generic command executor

* remove debug prints

* refactor + documentation

* refactor

* fixed build, clippy

* no_std

* implement WithObservers executor as discussed

* add symqemu as a submodule

* fix symqemu submodule URL to be relative

* update the concolic runtime to match the new interface

* update the trace file header regularly to save constraints in case the program crashes

* add build dependencies for symqemu

* handle full mesage buffer properly

* better policy for updating trace header

* less aggregiously inefficient GC information serialization

* move concolic runtime hitmap count to filter

this is in preparation for the new runtime interface

* very WIP new runtime interface

* use more convenient types in rust runtime

* EmptyRuntime -> NopRuntime

* hide cpp_runtime and formatting

* implement tracing runtime using new runtime interface

* implement filters with new runtime interface

* use a local checkout for symcc_runtime

* make test runtime tracing

* use test_runtime in smoke test

* fix formatting

* make the clippy overlord happy?

* disable symcc build on everything but linux

* make more of symcc_runtime linux only

* fix linking symcc_runtime with C++ stdlib

* will clippy ever be happy?

* formatting

* don't export symcc runtime when compiling tests

* clippy...

* "don't export symcc runtime when compiling tests" for runtime crate as well

* clippy

* move command executor to LibAFL

* move concolic crate into LibAFL

* move concolic{metada,observer} into LibAFL

* move ConcolicFeedback into LibAFL

* move ConolicStage into LibAFL

* fix bug in symcc part of concolic runtime

* stb_image fuzzer with concolic as example fuzzer

* clean up basic_concolic_fuzzer

* clean up and document concolic example fuzzer

* formatting

* clippy

* remove basic_concolic_fuzzer (it is now part of the examples)

* remove the runtime crate in favor of symcc_runtime

* re-architect concolic smoke test and remove git submodules

* remove old submodule directories

* make coverage filter public

* focker docker build

* clippy

* clippy fixes

* fix ubuntu as well

* remove .gitmodules

* move concolic mutational stage into libafl behind feature flag

* script to install dependencies for concolic smoke test

* fix bug

* clippy

* add github action to run smoke test

* fix action

* ensure smoke test is run in correct directory

* remove devcontainer files

* address feedback

* clippy

* more clippy

* address more feedback

Co-authored-by: Dominik Maier <domenukk@gmail.com>
2021-08-05 13:22:00 +02:00
Andrea Fioraldi
a1fc2a5453 Bump to 0.5.0 2021-07-05 14:12:40 +02:00
Toka
fbeec3ca6c
Faster feedback (#206)
* faster_feedback

* typo

* feedback_or

* comma

* crash dedup can use the fast one
2021-07-05 13:51:18 +02:00
Andrea Fioraldi
bdb5efbf5b
Configurations (#162)
* print sender id

* storing sender id to env

* executor in llmp handle_in_client

* compile the lib

* compiling generic_inmemory

* fix forkserver

* adapt from fuzzers

* instrospection fix

* exitkind in NewTestcase

* fix libafl_frida

* fix firda_libpng

* send conf with Newtestcase event

* bump to 0.4.0

* no_std fix

* fmt

* fix libfuzzer_libmozjpeg

Co-authored-by: Dominik Maier <domenukk@gmail.com>
2021-06-22 15:04:14 +02:00
Dominik Maier
c4dd0b25b8 fmt, clippy fixes 2021-06-10 13:39:44 +02:00
s1341
bea557a48a Switch frida_libpng to ShadowExecutor when using cmplog 2021-06-10 12:30:57 +03:00
OB
7abd7c8162
Cmplog instrumentation for Frida (#99)
* libafl_targets: refactor sancov trace-pc

* cmp observer

* libaf_targets: new structure to isolate sancov

* fix C warning

* combined executor

* cmp observer and feedback

* I2SRandReplace mutator

* impl CmpMap for CmpLogMap in libafl_targets

* cmplog observer

* clippy

* TracingStage

* working random cmplog mutations

* enable cmplog for libfuzzer_stb_image

* re-enable new testcase stats print

* fix update stats display

* bump 0.3.1

* clippy

* clippy

* no clippy for fuzzers/

* fix

* add cmplog runtime instrumentation

* test cmplog against value profile feature

* fix compile error

* add target arch aarch64 for is_interesting_cmplog_instruction

* add cfg target aarch64 on cmplog related code within stalker loop

* revert changes in cargo.toml

* align code with 'main' branch

* revert accidently changed Cargo.toml file

* update cmplog runtime code to work with the cmplog backend implementation

* change magic to 8 bytes

* cmplog runs with observer- no crashes

* clippy fixes

* add cmplog_runtime as feature

* set cmplog command-line argument to false by default

* setup cmplog observer and mutator correctly

* decrease emitted code opcode count

* add cmplog testing to the harness

* get rid of irrelevant changes and unused code, add comments, change
feature name to "cmplog"

* get rid of some unessecery whitespaces and new lines

* fix clippy errors

Co-authored-by: Andrea Fioraldi <andreafioraldi@gmail.com>
Co-authored-by: Dominik Maier <domenukk@gmail.com>
Co-authored-by: Omree <you@example.com>
2021-06-09 14:11:43 +02:00
s1341
4271790cb5
Add unique_name() to Input. Use it to generate filename in OnDiskCorpus (#152)
* Add unique_name() to Input. Use unique_name to generate filename in OnDiskCorpus

* updated duplicate ahash

* nostd fixes

* fmt

* rename unique_name to generate_name

Co-authored-by: Dominik Maier <domenukk@gmail.com>
2021-06-08 09:54:38 +02:00
Dominik Maier
36b823548a
nightly clippy fixes (#155)
* nightly clippy fixes

* more niglty clippy fixes

* added Safety section

* no_std fixes

* final fixes
2021-06-07 12:30:56 +02:00
Dominik Maier
3b2ee4bb70
Added MacOS CI (#131)
* added macos ci

* running tests on macos

* some macos fixes

* fmt

* some must_use infos

* trying' to fix MacOs testcases

* no main in test

* fixed MacOS testcases

* tried to fix build errors

* unified shmem_limits

* Revert "unified shmem_limits"

This reverts commit 8c6bb8d6a2cec71d72bb181b5b491737a771298e.

* hopefully fixed macos testcase

* removed unneeded values
2021-06-07 01:24:41 +02:00
s1341
636194de0e
Frida switch from walk-proc-maps to frida-gum based extraction of ranges (#149)
* Bump frida-gum version

* Move from walk of /proc/pid/maps to frida based range/module locatoin
2021-06-06 10:40:07 +02:00