本文整理汇总了Golang中github.com/lunixbochs/usercorn/go/models.Usercorn.PushBytes方法的典型用法代码示例。如果您正苦于以下问题：Golang Usercorn.PushBytes方法的具体用法？Golang Usercorn.PushBytes怎么用？Golang Usercorn.PushBytes使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/lunixbochs/usercorn/go/models.Usercorn的用法示例。
在下文中一共展示了Usercorn.PushBytes方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: StackInit
func StackInit(u models.Usercorn, args, env []string, auxv []byte) error {
// push argv and envp strings
envp, err := pushStrings(u, env...)
if err != nil {
return err
}
argv, err := pushStrings(u, args...)
if err != nil {
return err
}
// align stack pointer
sp, _ := u.RegRead(u.Arch().SP)
u.RegWrite(u.Arch().SP, (sp & ^uint64(15)))
// end marker
if _, err := u.Push(0); err != nil {
return err
}
// auxv
if len(auxv) > 0 {
if _, err := u.PushBytes(auxv); err != nil {
return err
}
}
// envp
if err := pushAddrs(u, envp); err != nil {
return err
}
// argv
if err := pushAddrs(u, argv); err != nil {
return err
}
// argc
_, err = u.Push(uint64(len(args)))
return err
}示例2: pushStrings
func pushStrings(u models.Usercorn, args ...string) ([]uint64, error) {
addrs := make([]uint64, 0, len(args)+1)
for _, arg := range args {
if addr, err := u.PushBytes([]byte(arg + "\x00")); err != nil {
return nil, err
} else {
addrs = append(addrs, addr)
}
}
return addrs, nil
}示例3: setupElfAuxv
func setupElfAuxv(u models.Usercorn) ([]Elf64Auxv, error) {
// set up AT_RANDOM
var tmp [16]byte
if _, err := rand.Read(tmp[:]); err != nil {
return nil, err
}
randAddr, err := u.PushBytes(tmp[:])
if err != nil {
return nil, err
}
// insert platform string
platformAddr, err := u.PushBytes([]byte(u.Loader().Arch() + "\x00"))
if err != nil {
return nil, err
}
// main auxv table
auxv := []Elf64Auxv{
// TODO: set/track a page size somewhere - on Arch.OS?
{ELF_AT_PAGESZ, 4096},
{ELF_AT_BASE, u.InterpBase()},
{ELF_AT_FLAGS, 0},
{ELF_AT_ENTRY, uint64(u.BinEntry())},
{ELF_AT_UID, uint64(os.Getuid())},
{ELF_AT_EUID, uint64(os.Geteuid())},
{ELF_AT_GID, uint64(os.Getgid())},
{ELF_AT_EGID, uint64(os.Getegid())},
{ELF_AT_PLATFORM, platformAddr},
{ELF_AT_CLKTCK, 100}, // 100hz, totally fake
{ELF_AT_RANDOM, randAddr},
{ELF_AT_NULL, 0},
}
// add phdr information if present in binary
phdrOff, _, phdrCount := u.Loader().Header()
segments, _ := u.Loader().Segments()
for _, s := range segments {
if s.ContainsPhys(phdrOff) {
phdrOff += s.Addr
break
}
}
phdrEnt := 56
if u.Bits() == 32 {
phdrEnt = 56 // FIXME
}
if phdrOff > 0 {
auxv = append(auxv, []Elf64Auxv{
{ELF_AT_PHDR, phdrOff},
{ELF_AT_PHENT, uint64(phdrEnt)},
{ELF_AT_PHNUM, uint64(phdrCount)},
}...)
}
return auxv, nil
}示例4: StackInit
func StackInit(u models.Usercorn, args, env []string) error {
exe := u.Exe()
addr, err := u.PushBytes([]byte(exe + "\x00"))
if err != nil {
return err
}
var tmp [8]byte
auxv, err := u.PackAddr(tmp[:], addr)
if err != nil {
return err
}
err = posix.StackInit(u, args, env, auxv)
if err != nil {
return err
}
// offset to mach_header at exe[0:] in guest memory
textOffset, _, _ := u.Loader().Header()
offset := u.Base() + textOffset
_, err = u.Push(offset)
return err
}