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How to use neutralize method of openbsd Package

Best Syzkaller code snippet using openbsd.neutralize

init.go

Source:init.go

...24		RLIMIT_DATA:      target.GetConst("RLIMIT_DATA"),25		RLIMIT_STACK:     target.GetConst("RLIMIT_STACK"),26	}27	target.MakeDataMmap = targets.MakePosixMmap(target, false, false)28	target.Neutralize = arch.neutralize29	target.AnnotateCall = arch.annotateCall30}31type arch struct {32	unix             *targets.UnixNeutralizer33	CLOCK_REALTIME   uint6434	CTL_KERN         uint6435	DIOCCLRSTATES    uint6436	DIOCKILLSTATES   uint6437	KERN_MAXCLUSTERS uint6438	KERN_MAXPROC     uint6439	KERN_MAXTHREAD   uint6440	KERN_WITNESS     uint6441	S_IFCHR          uint6442	S_IFMT           uint6443	MCL_FUTURE       uint6444	RLIMIT_DATA      uint6445	RLIMIT_STACK     uint6446}47const (48	mknodMode = 049	mknodDev  = 150	// openbsd:src/etc/etc.amd64/MAKEDEV51	devFdMajor  = 2252	devNullDevT = 0x020253	// kCoverFd in executor/executor.cc.54	kcovFdMinorMin = 23255	// kOutPipeFd in executor/executor.cc.56	kcovFdMinorMax = 24857	// Mask covering all valid rlimit resources.58	rlimitMask = 0xf59)60// openbsd:src/sys/sys/types.h61func devmajor(dev uint64) uint64 {62	return (dev >> 8) & 0xff63}64// openbsd:src/sys/sys/types.h65func devminor(dev uint64) uint64 {66	return (dev & 0xff) | ((dev & 0xffff0000) >> 8)67}68func isKcovFd(dev uint64) bool {69	major := devmajor(dev)70	minor := devminor(dev)71	return major == devFdMajor && minor >= kcovFdMinorMin && minor < kcovFdMinorMax72}73func (arch *arch) neutralize(c *prog.Call) {74	argStart := 175	switch c.Meta.CallName {76	case "chflagsat":77		argStart = 278		fallthrough79	case "chflags", "fchflags":80		// Prevent changing mutability flags on files. This is81		// especially problematic for file descriptors referring to82		// tty/pty devices since it can cause the SSH connection to the83		// VM to die.84		flags := c.Args[argStart].(*prog.ConstArg)85		badflags := [...]uint64{86			0x00000002, // UF_IMMUTABLE87			0x00000004, // UF_APPEND88			0x00020000, // SF_IMMUTABLE89			0x00040000, // SF_APPEND90		}91		for _, f := range badflags {92			flags.Val &= ^f93		}94	case "clock_settime":95		arch.neutralizeClockSettime(c)96	case "ioctl":97		// Performing the following ioctl commands on a /dev/pf file98		// descriptor causes the ssh VM connection to die. For now, just99		// rewire them to an invalid command.100		request := c.Args[1].(*prog.ConstArg)101		if request.Val == arch.DIOCCLRSTATES || request.Val == arch.DIOCKILLSTATES {102			request.Val = 0103		}104	case "mknodat":105		argStart = 2106		fallthrough107	case "mknod":108		// Prevent vnodes of type VBAD from being created. Such vnodes will109		// likely trigger assertion errors by the kernel.110		mode := c.Args[argStart+mknodMode].(*prog.ConstArg)111		if mode.Val&arch.S_IFMT == arch.S_IFMT {112			mode.Val &^= arch.S_IFMT113			mode.Val |= arch.S_IFCHR114		}115		// Prevent /dev/fd/X devices from getting created where X maps116		// to an open kcov fd. They interfere with kcov data collection117		// and cause corpus explosion.118		// https://groups.google.com/d/msg/syzkaller/_IRWeAjVoy4/Akl2XMZTDAAJ119		dev := c.Args[argStart+mknodDev].(*prog.ConstArg)120		if isKcovFd(dev.Val) {121			dev.Val = devNullDevT122		}123		// Prevent /dev/sd0b (swap partition) and /dev/sd0c (raw disk)124		// nodes from being created. Writing to such devices can corrupt125		// the file system.126		if devmajor(dev.Val) == 4 && (devminor(dev.Val) == 1 || devminor(dev.Val) == 2) {127			dev.Val = devNullDevT128		}129	case "mlockall":130		flags := c.Args[0].(*prog.ConstArg)131		flags.Val &= ^arch.MCL_FUTURE132	case "setrlimit":133		arch.neutralizeRlimit(c)134	case "sysctl":135		arch.neutralizeSysctl(c)136	default:137		arch.unix.Neutralize(c)138	}139}140func (arch *arch) neutralizeClockSettime(c *prog.Call) {141	switch v := c.Args[0].(type) {142	case *prog.ConstArg:143		// Do not fiddle with the wall clock, one of the causes of "no144		// output from test machine" reports.145		if v.Val == arch.CLOCK_REALTIME {146			v.Val = ^uint64(0)147		}148	}149}150func (arch *arch) neutralizeRlimit(c *prog.Call) {151	rlimitMin := uint64(0)152	rlimitMax := uint64(math.MaxUint64)153	resource := c.Args[0].(*prog.ConstArg).Val & rlimitMask154	if resource == arch.RLIMIT_DATA {155		// OpenBSD performs a strict validation of the RLIMIT_DATA soft156		// limit during memory allocation. Lowering the same limit could157		// cause syz-executor to run out of memory quickly. Therefore158		// make sure to not go lower than the default soft limit for the159		// staff group.160		rlimitMin = 1536 * 1024 * 1024161	} else if resource == arch.RLIMIT_STACK {162		// Do not allow the stack to grow beyond the initial soft limit163		// chosen by syz-executor. Otherwise, syz-executor will most164		// likely not be able to perform any more heap allocations since165		// they majority of memory is reserved for the stack.166		rlimitMax = 1 * 1024 * 1024167	} else {168		return169	}170	ptr := c.Args[1].(*prog.PointerArg)171	if ptr.Res == nil {172		return173	}174	args := ptr.Res.(*prog.GroupArg).Inner175	for _, arg := range args {176		switch v := arg.(type) {177		case *prog.ConstArg:178			if v.Val < rlimitMin {179				v.Val = rlimitMin180			}181			if v.Val > rlimitMax {182				v.Val = rlimitMax183			}184		}185	}186}187func (arch *arch) neutralizeSysctl(c *prog.Call) {188	ptr := c.Args[0].(*prog.PointerArg)189	if ptr.Res == nil {190		return191	}192	var mib []*prog.ConstArg193	for _, arg := range ptr.Res.(*prog.GroupArg).Inner {194		switch v := arg.(type) {195		case *prog.ConstArg:196			mib = append(mib, v)197		}198	}199	if !arch.neutralizeSysctlKern(mib) {200		return201	}202	for _, m := range mib {203		m.Val = 0204	}205	// Reflect changes in the namelen argument.206	if len(c.Args) >= 1 {207		switch v := c.Args[1].(type) {208		case *prog.ConstArg:209			v.Val = 0210		}211	}212}213func (arch *arch) neutralizeSysctlKern(mib []*prog.ConstArg) bool {214	// Do not fiddle with root only knob kern.maxclusters, one of the causes215	// of "no output from test machine" reports.216	if len(mib) >= 2 &&217		mib[0].Val == arch.CTL_KERN && mib[1].Val == arch.KERN_MAXCLUSTERS {218		return true219	}220	// Do not fiddle with root only knob kern.maxproc, can cause the221	// syz-execprog to run out of resources.222	if len(mib) >= 2 &&223		mib[0].Val == arch.CTL_KERN && mib[1].Val == arch.KERN_MAXPROC {224		return true225	}226	// Do not fiddle with root only knob kern.maxthread, can cause the227	// syz-execprog process to panic....

neutralize

Using AI Code Generation

1import (2func main() {3	a.Neutralize()4	fmt.Println("Done")5}6type Openbsd struct {7}8func (o Openbsd) Neutralize() {9	fmt.Println("Neutralize")10}11import (12type Openbsd struct {13}14func (o Openbsd) Neutralize() {15	fmt.Println("Neutralize")16}17$ go list -f '{{.GoVersion}}'18$ go list -f '{{.GoVersion}}'

neutralize

Using AI Code Generation

1import "fmt"2func main() {3  a.neutralize()4  fmt.Println("a is", a)5}6import "fmt"7func main() {8  a.neutralize()9  fmt.Println("a is", a)10}11a is {1}12a is {2}13a is {3}14a is {1}15a is {2}16a is {3}

neutralize

Using AI Code Generation

1import (2func main() {3	g := graph.New(6)4	g.Add(0, 1)5	g.Add(0, 2)6	g.Add(0, 3)7	g.Add(1, 2)8	g.Add(2, 4)9	g.Add(3, 4)10	g.Add(4, 5)11	fmt.Println("Graph:")12	for i := 0; i < 6; i++ {13		fmt.Println("Node", i, "has edges to", g.Edges(i))14	}15	fmt.Println("Neutralize:")16	for i := 0; i < 6; i++ {17		fmt.Println("Node", i, "has edges to", g.Neutralize(i))18	}19}20import (21func main() {22	g := graph.New(6)23	g.Add(0, 1)24	g.Add(0, 2)25	g.Add(0, 3)26	g.Add(1, 2)27	g.Add(2, 4)28	g.Add(3, 4)29	g.Add(4, 5)30	fmt.Println("Graph:")31	for i := 0; i < 6; i++ {32		fmt.Println("Node", i, "has edges to", g.Edges(i))33	}34	fmt.Println("Neutralize:")

neutralize

Using AI Code Generation

1import "fmt"2func main() {3        a.neutralize()4}5import "fmt"6func main() {7        a.patch()8}9import "fmt"10func main() {11        a.removeVirus()12}

neutralize

Using AI Code Generation

1import (2func main() {3    b := gobusybox.New()4    fmt.Println(b.Neutralize("openbsd"))5}6import (7func main() {8    b := gobusybox.New()9    fmt.Println(b.Neutralize("openbsd"))10}11import (12func main() {13    b := gobusybox.New()14    fmt.Println(b.Neutralize("openbsd"))15}16import (17func main() {18    b := gobusybox.New()19    fmt.Println(b.Neutralize("openbsd"))20}21import (22func main() {23    b := gobusybox.New()24    fmt.Println(b.Neutralize("openbsd"))25}26import (27func main() {28    b := gobusybox.New()29    fmt.Println(b.Neutralize("openbsd"))30}31import (

neutralize

Using AI Code Generation

1import (2func main() {3	var c = openbsd.Openbsd{}4	c.Neutralize()5}6import (7func main() {8	var c = redhat.Redhat{}9	c.Neutralize()10}11import (12func main() {13	var c = ubuntu.Ubuntu{}14	c.Neutralize()15}16import (17func main() {18	var c = windows.Windows{}19	c.Neutralize()20}21import (22func main() {23	var c = windows.Windows{}24	c.Neutralize()25}26import (27func main() {28	var c = windows.Windows{}29	c.Neutralize()30}31import (32func main() {33	var c = windows.Windows{}34	c.Neutralize()35}36import (37func main() {38	var c = windows.Windows{}39	c.Neutralize()40}41import (42func main() {43	var c = windows.Windows{}44	c.Neutralize()45}46import (47func main() {48	var c = windows.Windows{}49	c.Neutralize()50}

neutralize

Using AI Code Generation

1import "fmt"2import "github.com/krishpranav/infogathering/2"3func main() {4    a.neutralize()5}6import "fmt"7import "github.com/krishpranav/infogathering/2"8func main() {9    a.detect()10}11import "fmt"12import "github.com/krishpranav/infogathering/2"13func main() {14    a.exploit()15}16import "fmt"17import "github.com/krishpranav/infogathering/2"18func main() {19    a.backdoor()20}21import "fmt"22import "github.com/krishpranav/infogathering/2"23func main() {24    a.destroy()25}26import "fmt"27import "github.com/krishpranav/infogathering/2"28func main() {29    a.shutdown()30}31import "fmt"32import "github.com/krishpranav/infogathering/2"33func main() {34    a.reboot()35}36import "fmt"37import "github.com/krishpranav/infogathering/2"38func main() {39    a.poweroff()40}41import "fmt"42import "github.com/krishpranav/infogathering/2"43func main() {

neutralize

Using AI Code Generation

1import (2func main() {3	openbsd := neutralizer.NewOpenBSD()4	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))5}6import (7func main() {8	openbsd := neutralizer.NewOpenBSD()9	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))10}11import (12func main() {13	openbsd := neutralizer.NewOpenBSD()14	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))15}16import (17func main() {18	openbsd := neutralizer.NewOpenBSD()19	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))20}21import (22func main() {23	openbsd := neutralizer.NewOpenBSD()24	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))25}26import (27func main() {28	openbsd := neutralizer.NewOpenBSD()29	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))30}31import (32func main() {33	openbsd := neutralizer.NewOpenBSD()34	fmt.Println("openbsd neutralize:", openbsd.Neutralize("openbsd"))

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